// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './UpgradeabilityProxy.sol';
/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract AdminUpgradeabilityProxy is UpgradeabilityProxy {
  /**
   * Contract constructor.
   * @param _logic address of the initial implementation.
   * @param _admin Address of the proxy administrator.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, address _admin, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
    assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
    _setAdmin(_admin);
  }
  /**
   * @dev Emitted when the administration has been transferred.
   * @param previousAdmin Address of the previous admin.
   * @param newAdmin Address of the new admin.
   */
  event AdminChanged(address previousAdmin, address newAdmin);
  /**
   * @dev Storage slot with the admin of the contract.
   * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
  /**
   * @dev Modifier to check whether the `msg.sender` is the admin.
   * If it is, it will run the function. Otherwise, it will delegate the call
   * to the implementation.
   */
  modifier ifAdmin() {
    if (msg.sender == _admin()) {
      _;
    } else {
      _fallback();
    }
  }
  /**
   * @return The address of the proxy admin.
   */
  function admin() external ifAdmin returns (address) {
    return _admin();
  }
  /**
   * @return The address of the implementation.
   */
  function implementation() external ifAdmin returns (address) {
    return _implementation();
  }
  /**
   * @dev Changes the admin of the proxy.
   * Only the current admin can call this function.
   * @param newAdmin Address to transfer proxy administration to.
   */
  function changeAdmin(address newAdmin) external ifAdmin {
    require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
    emit AdminChanged(_admin(), newAdmin);
    _setAdmin(newAdmin);
  }
  /**
   * @dev Upgrade the backing implementation of the proxy.
   * Only the admin can call this function.
   * @param newImplementation Address of the new implementation.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeTo(newImplementation);
  }
  /**
   * @dev Upgrade the backing implementation of the proxy and call a function
   * on the new implementation.
   * This is useful to initialize the proxied contract.
   * @param newImplementation Address of the new implementation.
   * @param data Data to send as msg.data in the low level call.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   */
  function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {
    _upgradeTo(newImplementation);
    (bool success,) = newImplementation.delegatecall(data);
    require(success);
  }
  /**
   * @return adm The admin slot.
   */
  function _admin() internal view returns (address adm) {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      adm := sload(slot)
    }
  }
  /**
   * @dev Sets the address of the proxy admin.
   * @param newAdmin Address of the new proxy admin.
   */
  function _setAdmin(address newAdmin) internal {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      sstore(slot, newAdmin)
    }
  }
  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal override virtual {
    require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
    super._willFallback();
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './Proxy.sol';
import '@openzeppelin/contracts/utils/Address.sol';
/**
 * @title UpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract UpgradeabilityProxy is Proxy {
  /**
   * @dev Contract constructor.
   * @param _logic Address of the initial implementation.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, bytes memory _data) public payable {
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if(_data.length > 0) {
      (bool success,) = _logic.delegatecall(_data);
      require(success);
    }
  }  
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address indexed implementation);
  /**
   * @dev Storage slot with the address of the current implementation.
   * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
  /**
   * @dev Returns the current implementation.
   * @return impl Address of the current implementation
   */
  function _implementation() internal override view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }
  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }
  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(Address.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      sstore(slot, newImplementation)
    }
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
abstract contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  fallback () payable external {
    _fallback();
  }
  /**
   * @dev Receive function.
   * Implemented entirely in `_fallback`.
   */
  receive () payable external {
    _fallback();
  }
  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal virtual view returns (address);
  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    assembly {
      // Copy msg.data. We take full control of memory in this inline assembly
      // block because it will not return to Solidity code. We overwrite the
      // Solidity scratch pad at memory position 0.
      calldatacopy(0, 0, calldatasize())
      // Call the implementation.
      // out and outsize are 0 because we don't know the size yet.
      let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
      // Copy the returned data.
      returndatacopy(0, 0, returndatasize())
      switch result
      // delegatecall returns 0 on error.
      case 0 { revert(0, returndatasize()) }
      default { return(0, returndatasize()) }
    }
  }
  /**
   * @dev Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal virtual {
  }
  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.
        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import "../lib/openzeppelin/contracts/4.5.0/access/AccessControl.sol";
import "../lib/openzeppelin/contracts/4.5.0/token/ERC20/ERC20.sol";
import "../lib/openzeppelin/contracts/4.5.0/token/ERC20/extensions/ERC20Burnable.sol";
import "../lib/openzeppelin/contracts/4.5.0/token/ERC20/extensions/draft-ERC20Permit.sol";
contract Stronger is ERC20, ERC20Burnable, ERC20Permit, AccessControl {
  bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
  constructor() ERC20("Stronger", "STRNGR") ERC20Permit("Stronger") {
    _mint(msg.sender, 10000000 * 10 ** decimals());
    _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
    _grantRole(MINTER_ROLE, msg.sender);
  }
  function mint(address to, uint256 amount) external onlyRole(MINTER_ROLE) {
    _mint(to, amount);
  }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";
/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }
    mapping(bytes32 => RoleData) private _roles;
    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }
    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }
    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }
    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }
    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }
    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }
    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");
        _revokeRole(role, account);
    }
    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }
    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }
    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }
    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }
    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }
    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }
    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }
    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }
    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, _allowances[owner][spender] + addedValue);
        return true;
    }
    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = _allowances[owner][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }
    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(from, to, amount);
        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;
        emit Transfer(from, to, amount);
        _afterTokenTransfer(from, to, amount);
    }
    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
        _afterTokenTransfer(address(0), account, amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;
        emit Transfer(account, address(0), amount);
        _afterTokenTransfer(account, address(0), amount);
    }
    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    /**
     * @dev Spend `amount` form the allowance of `owner` toward `spender`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }
    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)
pragma solidity ^0.8.0;
import "../ERC20.sol";
import "../../../utils/Context.sol";
/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        _spendAllowance(account, _msgSender(), amount);
        _burn(account, amount);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-ERC20Permit.sol)
pragma solidity ^0.8.0;
import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";
/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
    using Counters for Counters.Counter;
    mapping(address => Counters.Counter) private _nonces;
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private immutable _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    constructor(string memory name) EIP712(name, "1") {}
    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");
        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));
        bytes32 hash = _hashTypedDataV4(structHash);
        address signer = ECDSA.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");
        _approve(owner, spender, value);
    }
    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }
    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }
    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        Counters.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);
    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);
    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;
    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;
    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }
    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }
    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);
    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);
    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);
    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)
pragma solidity ^0.8.0;
import "./ECDSA.sol";
/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;
    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;
    /* solhint-enable var-name-mixedcase */
    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }
    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }
    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }
    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
import "../Strings.sol";
/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }
    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }
    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }
    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }
    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }
    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }
    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }
        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }
        return (signer, RecoverError.NoError);
    }
    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }
    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\\x19Ethereum Signed Message:\
32", hash));
    }
    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\\x19Ethereum Signed Message:\
", Strings.toString(s.length), s));
    }
    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\\x19\\x01", domainSeparator, structHash));
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)
pragma solidity ^0.8.0;
/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }
    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }
    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }
    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }
    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
import "../lib/openzeppelin/contracts/3.4.1/token/ERC20/IERC20.sol";
import "./lib/SafeMath.sol";
import "./interfaces/StrongPoolInterface.sol";
import "./interfaces/INodePackV3.sol";
import "./interfaces/IERC1155Preset.sol";
import "./interfaces/StrongNFTBonusInterface.sol";
import "./lib/rewards.sol";
contract ServiceV23 {
  uint constant public V20_DEPLOYED_AT_BLOCK = 14806408;
  event Requested(address indexed miner);
  event Claimed(address indexed miner, uint256 reward);
  using SafeMath for uint256;
  bool public initDone;
  address public admin;
  address public pendingAdmin;
  address public superAdmin;
  address public pendingSuperAdmin;
  address public serviceAdmin;
  address public parameterAdmin;
  address payable public feeCollector;
  IERC20 public strongToken;
  StrongPoolInterface public strongPool;
  uint256 public rewardPerBlockNumerator;
  uint256 public rewardPerBlockDenominator;
  uint256 public naasRewardPerBlockNumerator;
  uint256 public naasRewardPerBlockDenominator;
  uint256 public claimingFeeNumerator;
  uint256 public claimingFeeDenominator;
  uint256 public requestingFeeInWei;
  uint256 public strongFeeInWei;
  uint256 public recurringFeeInWei;
  uint256 public recurringNaaSFeeInWei;
  uint256 public recurringPaymentCycleInBlocks;
  uint256 public rewardBalance;
  mapping(address => uint256) public entityBlockLastClaimedOn;
  address[] public entities;
  mapping(address => uint256) public entityIndex;
  mapping(address => bool) public entityActive;
  mapping(address => bool) public requestPending;
  mapping(address => bool) public entityIsNaaS;
  mapping(address => uint256) public paidOnBlock;
  uint256 public activeEntities;
  string public desciption;
  uint256 public claimingFeeInWei;
  uint256 public naasRequestingFeeInWei;
  uint256 public naasStrongFeeInWei;
  bool public removedTokens;
  mapping(address => uint256) public traunch;
  uint256 public currentTraunch;
  mapping(bytes => bool) public entityNodeIsActive;
  mapping(bytes => bool) public entityNodeIsBYON;
  mapping(bytes => uint256) public entityNodeTraunch;
  mapping(bytes => uint256) public entityNodePaidOnBlock;
  mapping(bytes => uint256) public entityNodeClaimedOnBlock;
  mapping(address => uint128) public entityNodeCount;
  event Paid(address indexed entity, uint128 nodeId, bool isBYON, bool isRenewal, uint256 upToBlockNumber);
  event Migrated(address indexed from, address indexed to, uint128 fromNodeId, uint128 toNodeId, bool isBYON);
  uint256 public rewardPerBlockNumeratorNew;
  uint256 public rewardPerBlockDenominatorNew;
  uint256 public naasRewardPerBlockNumeratorNew;
  uint256 public naasRewardPerBlockDenominatorNew;
  uint256 public rewardPerBlockNewEffectiveBlock;
  StrongNFTBonusInterface public strongNFTBonus;
  uint256 public gracePeriodInBlocks;
  uint128 public maxNodes;
  uint256 public maxPaymentPeriods;
  event Deactivated(address indexed entity, uint128 nodeId, bool isBYON, uint256 atBlockNumber);
  event MigratedToNodePack(address indexed entity, uint128 fromNodeId, uint toPackId);
  uint256 public secondsPerBlock;
  uint256 public nodeLifetimeReward;
  mapping(bytes => uint256) public entityNodeClaimedTotal;
  mapping(address => uint128) public entityNodeDeactivatedCount;
  function init(
    address strongTokenAddress,
    address strongPoolAddress,
    address adminAddress,
    address superAdminAddress,
    uint256 rewardPerBlockNumeratorValue,
    uint256 rewardPerBlockDenominatorValue,
    uint256 naasRewardPerBlockNumeratorValue,
    uint256 naasRewardPerBlockDenominatorValue,
    uint256 requestingFeeInWeiValue,
    uint256 strongFeeInWeiValue,
    uint256 recurringFeeInWeiValue,
    uint256 recurringNaaSFeeInWeiValue,
    uint256 recurringPaymentCycleInBlocksValue,
    uint256 claimingFeeNumeratorValue,
    uint256 claimingFeeDenominatorValue,
    string memory desc
  ) external {
    require(!initDone, "init done");
    strongToken = IERC20(strongTokenAddress);
    strongPool = StrongPoolInterface(strongPoolAddress);
    admin = adminAddress;
    superAdmin = superAdminAddress;
    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;
    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;
    naasRewardPerBlockNumerator = naasRewardPerBlockNumeratorValue;
    naasRewardPerBlockDenominator = naasRewardPerBlockDenominatorValue;
    requestingFeeInWei = requestingFeeInWeiValue;
    strongFeeInWei = strongFeeInWeiValue;
    recurringFeeInWei = recurringFeeInWeiValue;
    recurringNaaSFeeInWei = recurringNaaSFeeInWeiValue;
    claimingFeeNumerator = claimingFeeNumeratorValue;
    claimingFeeDenominator = claimingFeeDenominatorValue;
    recurringPaymentCycleInBlocks = recurringPaymentCycleInBlocksValue;
    desciption = desc;
    initDone = true;
  }
  function updateServiceAdmin(address newServiceAdmin) external {
    require(msg.sender == superAdmin);
    serviceAdmin = newServiceAdmin;
  }
  function updateParameterAdmin(address newParameterAdmin) external {
    require(newParameterAdmin != address(0));
    require(msg.sender == superAdmin);
    parameterAdmin = newParameterAdmin;
  }
  function updateFeeCollector(address payable newFeeCollector) external {
    require(newFeeCollector != address(0));
    require(msg.sender == superAdmin);
    feeCollector = newFeeCollector;
  }
  function setPendingAdmin(address newPendingAdmin) external {
    require(msg.sender == admin);
    pendingAdmin = newPendingAdmin;
  }
  function acceptAdmin() external {
    require(msg.sender == pendingAdmin && msg.sender != address(0), "not pendingAdmin");
    admin = pendingAdmin;
    pendingAdmin = address(0);
  }
  function setPendingSuperAdmin(address newPendingSuperAdmin) external {
    require(msg.sender == superAdmin, "not superAdmin");
    pendingSuperAdmin = newPendingSuperAdmin;
  }
  function acceptSuperAdmin() external {
    require(msg.sender == pendingSuperAdmin && msg.sender != address(0), "not pendingSuperAdmin");
    superAdmin = pendingSuperAdmin;
    pendingSuperAdmin = address(0);
  }
  function isEntityActive(address entity) external view returns (bool) {
    return entityActive[entity] || (doesNodeExist(entity, 1) && !hasNodeExpired(entity, 1));
  }
  function updateRewardPerBlock(uint256 numerator, uint256 denominator) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    require(denominator != 0);
    rewardPerBlockNumerator = numerator;
    rewardPerBlockDenominator = denominator;
  }
  function updateNaaSRewardPerBlock(uint256 numerator, uint256 denominator) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    require(denominator != 0);
    naasRewardPerBlockNumerator = numerator;
    naasRewardPerBlockDenominator = denominator;
  }
  function updateRewardPerBlockNew(
    uint256 numerator,
    uint256 denominator,
    uint256 numeratorNass,
    uint256 denominatorNass,
    uint256 effectiveBlock
  ) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    rewardPerBlockNumeratorNew = numerator;
    rewardPerBlockDenominatorNew = denominator;
    naasRewardPerBlockNumeratorNew = numeratorNass;
    naasRewardPerBlockDenominatorNew = denominatorNass;
    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;
  }
  function deposit(uint256 amount) external {
    require(msg.sender == superAdmin);
    require(amount > 0);
    rewardBalance = rewardBalance.add(amount);
    require(strongToken.transferFrom(msg.sender, address(this), amount), "transfer failed");
  }
  function withdraw(address destination, uint256 amount) external {
    require(msg.sender == superAdmin);
    require(amount > 0);
    require(rewardBalance >= amount, "not enough");
    rewardBalance = rewardBalance.sub(amount);
    require(strongToken.transfer(destination, amount), "transfer failed");
  }
  function updateRequestingFee(uint256 feeInWei) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    requestingFeeInWei = feeInWei;
  }
  function updateStrongFee(uint256 feeInWei) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    strongFeeInWei = feeInWei;
  }
  function updateNaasRequestingFee(uint256 feeInWei) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    naasRequestingFeeInWei = feeInWei;
  }
  function updateNaasStrongFee(uint256 feeInWei) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    naasStrongFeeInWei = feeInWei;
  }
  function updateClaimingFee(uint256 numerator, uint256 denominator) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    require(denominator != 0);
    claimingFeeNumerator = numerator;
    claimingFeeDenominator = denominator;
  }
  function updateRecurringFee(uint256 feeInWei) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    recurringFeeInWei = feeInWei;
  }
  function updateRecurringNaaSFee(uint256 feeInWei) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    recurringNaaSFeeInWei = feeInWei;
  }
  function updateRecurringPaymentCycleInBlocks(uint256 blocks) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    require(blocks > 0);
    recurringPaymentCycleInBlocks = blocks;
  }
  function updateGracePeriodInBlocks(uint256 blocks) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    require(blocks > 0);
    gracePeriodInBlocks = blocks;
  }
  function requestAccess(bool isNaaS) external payable {
    require(entityNodeCount[msg.sender] < maxNodes, "limit reached");
    uint256 rFee;
    uint256 sFee;
    uint128 nodeId = entityNodeCount[msg.sender] + 1;
    bytes memory id = getNodeId(msg.sender, nodeId);
    if (isNaaS) {
      rFee = naasRequestingFeeInWei;
      sFee = naasStrongFeeInWei;
      activeEntities = activeEntities.add(1);
    } else {
      rFee = requestingFeeInWei;
      sFee = strongFeeInWei;
      entityNodeIsBYON[id] = true;
    }
    require(msg.value == rFee, "invalid fee");
    entityNodePaidOnBlock[id] = block.number;
    entityNodeClaimedOnBlock[id] = block.number;
    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] + 1;
    emit Paid(msg.sender, nodeId, entityNodeIsBYON[id], false, entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks));
    require(strongToken.transferFrom(msg.sender, address(this), sFee), "transfer failed");
    require(strongToken.transfer(feeCollector, sFee), "transfer failed");
    sendValue(feeCollector, msg.value);
  }
  function setEntityActiveStatus(address entity, bool status) external {
    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);
    uint256 index = entityIndex[entity];
    require(entities[index] == entity, "invalid entity");
    require(entityActive[entity] != status, "already set");
    entityActive[entity] = status;
    if (status) {
      activeEntities = activeEntities.add(1);
      entityBlockLastClaimedOn[entity] = block.number;
    } else {
      activeEntities = activeEntities.sub(1);
      entityBlockLastClaimedOn[entity] = 0;
    }
  }
  function payFee(uint128 nodeId, uint256 claimedTotal, bytes calldata signature) public payable {
    address sender = msg.sender == address(this) ? tx.origin : msg.sender;
    bytes memory id = getNodeId(sender, nodeId);
    updateNodeClaimedTotal(sender, nodeId, claimedTotal, signature);
    require(doesNodeExist(sender, nodeId), "doesnt exist");
    require(!hasNodeExpired(sender, nodeId), "too late");
    require(!hasMaxPayments(sender, nodeId), "too soon");
    if (entityNodeIsBYON[id]) {
      require(msg.value == recurringFeeInWei, "invalid fee");
    } else {
      require(msg.value == recurringNaaSFeeInWei, "invalid fee");
    }
    entityNodePaidOnBlock[id] = entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks);
    emit Paid(sender, nodeId, entityNodeIsBYON[id], true, entityNodePaidOnBlock[id]);
    sendValue(feeCollector, msg.value);
  }
  function getReward(address entity, uint128 nodeId) external view returns (uint256) {
    return getRewardByBlock(entity, nodeId, block.number);
  }
  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) public view returns (uint256) {
    bytes memory id = getNodeId(entity, nodeId);
    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];
    if (hasNodeExpired(entity, nodeId)) return 0;
    if (blockNumber > block.number) return 0;
    if (blockLastClaimedOn == 0) return 0;
    if (blockNumber < blockLastClaimedOn) return 0;
    if (activeEntities == 0) return 0;
    if (entityNodeIsBYON[id] && !entityNodeIsActive[id]) return 0;
    uint256 rewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumerator : naasRewardPerBlockNumerator;
    uint256 rewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominator : naasRewardPerBlockDenominator;
    uint256 newRewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumeratorNew : naasRewardPerBlockNumeratorNew;
    uint256 newRewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominatorNew : naasRewardPerBlockDenominatorNew;
    uint256 bonus = address(strongNFTBonus) != address(0)
    ? strongNFTBonus.getBonus(entity, nodeId, blockLastClaimedOn, blockNumber)
    : 0;
    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, blockNumber);
    uint256 rewardOld = rewardDenominator > 0 ? rewardBlocks[0].mul(rewardNumerator).div(rewardDenominator) : 0;
    uint256 rewardNew = newRewardDenominator > 0 ? rewardBlocks[1].mul(newRewardNumerator).div(newRewardDenominator) : 0;
    uint256 rewardTotal = rewardOld.add(rewardNew).add(bonus);
    if (nodeLifetimeReward > 0) {
      if (entityNodeClaimedTotal[id] >= nodeLifetimeReward) {
        return 0;
      } else if (entityNodeClaimedTotal[id].add(rewardTotal) > nodeLifetimeReward) {
        return nodeLifetimeReward.sub(entityNodeClaimedTotal[id]);
      }
    }
    return rewardTotal;
  }
  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool, uint256 claimedTotal, bytes memory signature) public payable returns (uint256) {
    address sender = msg.sender == address(this) || msg.sender == address(strongNFTBonus) ? tx.origin : msg.sender;
    bytes memory id = getNodeId(sender, nodeId);
    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];
    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];
    require(blockLastClaimedOn != 0, "never claimed");
    require(blockNumber <= block.number, "invalid block");
    require(blockNumber > blockLastClaimedOn, "too soon");
    require(!entityNodeIsBYON[id] || entityNodeIsActive[id], "not active");
    if (
      (!entityNodeIsBYON[id] && recurringNaaSFeeInWei != 0) || (entityNodeIsBYON[id] && recurringFeeInWei != 0)
    ) {
      require(blockNumber < blockLastPaidOn.add(recurringPaymentCycleInBlocks), "pay fee");
    }
    uint256 reward = getRewardByBlock(sender, nodeId, blockNumber);
    if (msg.sender == address(strongNFTBonus) && reward == 0) {
      return 0;
    }
    require(reward > 0, "no reward");
    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);
    require(msg.value >= fee, "invalid fee");
    if (msg.sender != address(this)) {
      updateNodeClaimedTotal(sender, nodeId, claimedTotal, signature);
    }
    rewardBalance = rewardBalance.sub(reward);
    entityNodeClaimedOnBlock[id] = blockNumber;
    entityNodeClaimedTotal[id] = entityNodeClaimedTotal[id].add(reward);
    emit Claimed(sender, reward);
    if (toStrongPool) {
      require(strongToken.approve(address(strongPool), reward), "approve failed");
      strongPool.mineFor(sender, reward);
    } else {
      require(strongToken.transfer(sender, reward), "transfer failed");
    }
    sendValue(feeCollector, fee);
    return fee;
  }
  function getRewardAll(address entity, uint256 blockNumber) public view returns (uint256) {
    uint256 rewardsAll = 0;
    for (uint128 i = 1; i <= entityNodeCount[entity]; i++) {
      rewardsAll = rewardsAll.add(getRewardByBlock(entity, i, blockNumber > 0 ? blockNumber : block.number));
    }
    return rewardsAll;
  }
  function canBePaid(address entity, uint128 nodeId) public view returns (bool) {
    return !isNodeBYON(entity, nodeId) && !hasNodeExpired(entity, nodeId) && !hasMaxPayments(entity, nodeId);
  }
  function doesNodeExist(address entity, uint128 nodeId) public view returns (bool) {
    bytes memory id = getNodeId(entity, nodeId);
    return entityNodePaidOnBlock[id] > 0;
  }
  function hasNodeExpired(address entity, uint128 nodeId) public view returns (bool) {
    bytes memory id = getNodeId(entity, nodeId);
    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];
    if (entityNodeIsBYON[id]) return !entityNodeIsActive[id];
    if (!doesNodeExist(entity, nodeId)) return true;
    return block.number > blockLastPaidOn.add(recurringPaymentCycleInBlocks).add(gracePeriodInBlocks);
  }
  function isNodeOverDue(address entity, uint128 nodeId) public view returns (bool) {
    return block.number > entityNodePaidOnBlock[getNodeId(entity, nodeId)].add(recurringPaymentCycleInBlocks);
  }
  function hasMaxPayments(address entity, uint128 nodeId) public view returns (bool) {
    bytes memory id = getNodeId(entity, nodeId);
    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];
    uint256 limit = block.number.add(recurringPaymentCycleInBlocks.mul(maxPaymentPeriods));
    return blockLastPaidOn.add(recurringPaymentCycleInBlocks) >= limit;
  }
  function getNodeId(address entity, uint128 nodeId) public view returns (bytes memory) {
    uint128 id = nodeId != 0 ? nodeId : entityNodeCount[entity] + 1;
    return abi.encodePacked(entity, id);
  }
  function getNodePaidOn(address entity, uint128 nodeId) external view returns (uint256) {
    bytes memory id = getNodeId(entity, nodeId);
    return entityNodePaidOnBlock[id];
  }
  function getEntityNodeActiveCount(address entity) external view returns (uint256) {
    return entityNodeCount[entity] - entityNodeDeactivatedCount[entity];
  }
  function getEntityNodeClaimedTotal(address entity, uint128 nodeId) public view returns (uint256) {
    return entityNodeClaimedTotal[getNodeId(entity, nodeId)];
  }
  function isNodeActive(address entity, uint128 nodeId) external view returns (bool) {
    bytes memory id = getNodeId(entity, nodeId);
    return entityNodeIsActive[id] || !entityNodeIsBYON[id];
  }
  function isNodeBYON(address entity, uint128 nodeId) public view returns (bool) {
    bytes memory id = getNodeId(entity, nodeId);
    return entityNodeIsBYON[id];
  }
  function sendValue(address payable recipient, uint256 amount) internal {
    require(address(this).balance >= amount, "insufficient balance");
    // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
    (bool success,) = recipient.call{value : amount}("");
    require(success, "send failed");
  }
  function addNFTBonusContract(address _contract) external {
    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);
    strongNFTBonus = StrongNFTBonusInterface(_contract);
  }
  function disableNodeAdmin(address entity, uint128 nodeId) external {
    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);
    bytes memory id = getNodeId(entity, nodeId);
    entityNodePaidOnBlock[id] = 0;
    entityNodeClaimedOnBlock[id] = 0;
    emit Deactivated(entity, nodeId, entityNodeIsBYON[id], block.number);
  }
  function updateLimits(uint128 _maxNodes, uint256 _maxPaymentPeriods) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    maxNodes = _maxNodes;
    maxPaymentPeriods = _maxPaymentPeriods;
  }
  function setTokenContract(IERC20 tokenAddress) external {
    require(msg.sender == superAdmin);
    strongToken = tokenAddress;
  }
  function withdrawToken(IERC20 token, address recipient, uint256 amount) external {
    require(msg.sender == superAdmin);
    require(token.transfer(recipient, amount));
  }
  function updateNodeLifetimeReward(uint256 _nodeLifetimeReward) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    nodeLifetimeReward = _nodeLifetimeReward;
  }
  function updateNodeClaimedTotal(address entity, uint128 nodeId, uint256 claimedTotal, bytes memory signature) internal {
    bytes memory id = getNodeId(entity, nodeId);
    if (entityNodeClaimedTotal[id] != 0) {
      return;
    }
    bytes32 hash = prefixed(keccak256(abi.encodePacked(entity, nodeId, claimedTotal)));
    address signer = recoverSigner(hash, signature);
    require(signer == admin || signer == parameterAdmin || signer == superAdmin, "wrong signer");
    entityNodeClaimedTotal[id] = claimedTotal;
  }
  function updateSecondsPerBlock(uint256 _secondsPerBlock) external {
    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);
    secondsPerBlock = _secondsPerBlock;
  }
  function migrateAll(address _contract, uint256 _blockNumber) external payable {
    require(entityNodeCount[msg.sender] > 0, "no nodes");
    uint256 totalClaimed = 0;
    uint128 migratedNodes = 0;
    uint256 totalSeconds = 0;
    uint256 rewardsDue = getRewardAll(msg.sender, _blockNumber);
    for (uint128 nodeId = 1; nodeId <= entityNodeCount[msg.sender]; nodeId++) {
      bytes memory id = getNodeId(msg.sender, nodeId);
      bool migrated = migrate(nodeId, _blockNumber);
      if (migrated) {
        migratedNodes += 1;
        totalClaimed = totalClaimed.add(entityNodeClaimedTotal[id]);
        totalSeconds = totalSeconds.add(block.timestamp - ((block.number - entityNodePaidOnBlock[id]) * secondsPerBlock));
      }
    }
    require(migratedNodes > 0, "nothing to migrate");
    entityNodeDeactivatedCount[msg.sender] += migratedNodes;
    INodePackV3(_contract).migrateNodes(msg.sender, 1, migratedNodes, totalSeconds / migratedNodes, rewardsDue, totalClaimed);
  }
  function migrate(uint128 _nodeId, uint256 _blockNumber) internal returns (bool) {
    address sender = msg.sender == address(this) ? tx.origin : msg.sender;
    bytes memory id = getNodeId(sender, _nodeId);
    if (hasNodeExpired(sender, _nodeId) || isNodeBYON(sender, _nodeId) || entityNodeClaimedTotal[id] >= nodeLifetimeReward) {
      return false;
    }
    require(entityNodeClaimedTotal[id] > 0 || entityNodePaidOnBlock[id] > V20_DEPLOYED_AT_BLOCK, "claim first");
    entityNodePaidOnBlock[id] = 0;
    entityNodeClaimedOnBlock[id] = 0;
    emit MigratedToNodePack(sender, _nodeId, 1);
    strongNFTBonus.unstakeNFT(sender, _nodeId, address(this));
    return true;
  }
  // Signatures
  function recoverSigner(bytes32 _hash, bytes memory _sig) public pure returns (address) {
    (uint8 v, bytes32 r, bytes32 s) = splitSignature(_sig);
    return ecrecover(_hash, v, r, s);
  }
  function prefixed(bytes32 _hash) internal pure returns (bytes32) {
    return keccak256(abi.encodePacked("\\x19Ethereum Signed Message:\
32", _hash));
  }
  function splitSignature(bytes memory _sig) internal pure returns (uint8 v, bytes32 r, bytes32 s) {
    require(_sig.length == 65);
    assembly {
      r := mload(add(_sig, 32))
      s := mload(add(_sig, 64))
      v := byte(0, mload(add(_sig, 96)))
    }
    return (v, r, s);
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
  /**
   * @dev Returns the addition of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    uint256 c = a + b;
    if (c < a) return (false, 0);
    return (true, c);
  }
  /**
   * @dev Returns the substraction of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b > a) return (false, 0);
    return (true, a - b);
  }
  /**
   * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
    if (a == 0) return (true, 0);
    uint256 c = a * b;
    if (c / a != b) return (false, 0);
    return (true, c);
  }
  /**
   * @dev Returns the division of two unsigned integers, with a division by zero flag.
   *
   * _Available since v3.4._
   */
  function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b == 0) return (false, 0);
    return (true, a / b);
  }
  /**
   * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
   *
   * _Available since v3.4._
   */
  function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b == 0) return (false, 0);
    return (true, a % b);
  }
  /**
   * @dev Returns the addition of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `+` operator.
   *
   * Requirements:
   *
   * - Addition cannot overflow.
   */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");
    return c;
  }
  /**
   * @dev Returns the subtraction of two unsigned integers, reverting on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   *
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a, "SafeMath: subtraction overflow");
    return a - b;
  }
  /**
   * @dev Returns the multiplication of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `*` operator.
   *
   * Requirements:
   *
   * - Multiplication cannot overflow.
   */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) return 0;
    uint256 c = a * b;
    require(c / a == b, "SafeMath: multiplication overflow");
    return c;
  }
  /**
   * @dev Returns the integer division of two unsigned integers, reverting on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b > 0, "SafeMath: division by zero");
    return a / b;
  }
  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * reverting when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b > 0, "SafeMath: modulo by zero");
    return a % b;
  }
  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {trySub}.
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   *
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b <= a, errorMessage);
    return a - b;
  }
  /**
   * @dev Returns the integer division of two unsigned integers, reverting with custom message on
   * division by zero. The result is rounded towards zero.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryDiv}.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b > 0, errorMessage);
    return a / b;
  }
  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * reverting with custom message when dividing by zero.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryMod}.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b > 0, errorMessage);
    return a % b;
  }
}
// SPDX-License-Identifier: MIT
//pragma solidity ^0.6.12;
pragma solidity >=0.6.0;
interface StrongPoolInterface {
  function mineFor(address miner, uint256 amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface INodePackV3 {
  function doesPackExist(address entity, uint packId) external view returns (bool);
  function hasPackExpired(address entity, uint packId) external view returns (bool);
  function claim(uint packId, uint timestamp, address toStrongPool) external payable returns (uint);
//  function getBonusAt(address _entity, uint _packType, uint _timestamp) external view returns (uint);
  function getPackId(address _entity, uint _packType) external pure returns (bytes memory);
  function getEntityPackTotalNodeCount(address _entity, uint _packType) external view returns (uint);
  function getEntityPackActiveNodeCount(address _entity, uint _packType) external view returns (uint);
  function migrateNodes(address _entity, uint _nodeType, uint _nodeCount, uint _lastPaidAt, uint _rewardsDue, uint _totalClaimed) external returns (bool);
//  function addPackRewardDue(address _entity, uint _packType, uint _rewardDue) external;
  function updatePackState(address _entity, uint _packType) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155Preset {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values);
    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);
    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);
    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);
    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory);
    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;
    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);
    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external;
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
    /**
     * @dev Creates `amount` new tokens for `to`, of token type `id`.
     *
     * See {ERC1155-_mint}.
     *
     * Requirements:
     *
     * - the caller must have the `MINTER_ROLE`.
     */
    function mint(address to, uint256 id, uint256 amount, bytes memory data) external;
    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] variant of {mint}.
     */
    function mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) external;
    function getOwnerIdByIndex(address owner, uint256 index) external view returns (uint256);
    function getOwnerIdIndex(address owner, uint256 id) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
//pragma solidity ^0.6.12;
pragma solidity >=0.6.0;
interface StrongNFTBonusInterface {
  function getBonus(address _entity, uint128 _nodeId, uint256 _from, uint256 _to) external view returns (uint256);
  function getBonusValue(address _entity, uint128 _nodeId, uint256 _from, uint256 _to, uint256 _bonusValue) external view returns (uint256);
  function getStakedNftBonusName(address _entity, uint128 _nodeId, address _serviceContract) external view returns (string memory);
  function migrateNFT(address _entity, uint128 _fromNodeId, uint128 _toNodeId, address _toServiceContract) external;
  function unstakeNFT(address _entity, uint128 _nodeId, address _serviceContract) external;
}
// SPDX-License-Identifier: MIT
//pragma solidity 0.6.12;
pragma solidity >=0.6.0;
import "./SafeMath.sol";
library rewards {
    using SafeMath for uint256;
    function blocks(uint256 lastClaimedOnBlock, uint256 newRewardBlock, uint256 blockNumber) internal pure returns (uint256[2] memory) {
        if (lastClaimedOnBlock >= blockNumber) return [uint256(0), uint256(0)];
        if (blockNumber <= newRewardBlock || newRewardBlock == 0) {
            return [blockNumber.sub(lastClaimedOnBlock), uint256(0)];
        }
        else if (lastClaimedOnBlock >= newRewardBlock) {
            return [uint256(0), blockNumber.sub(lastClaimedOnBlock)];
        }
        else {
            return [newRewardBlock.sub(lastClaimedOnBlock), blockNumber.sub(newRewardBlock)];
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './UpgradeabilityProxy.sol';
/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract AdminUpgradeabilityProxy is UpgradeabilityProxy {
  /**
   * Contract constructor.
   * @param _logic address of the initial implementation.
   * @param _admin Address of the proxy administrator.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, address _admin, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
    assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
    _setAdmin(_admin);
  }
  /**
   * @dev Emitted when the administration has been transferred.
   * @param previousAdmin Address of the previous admin.
   * @param newAdmin Address of the new admin.
   */
  event AdminChanged(address previousAdmin, address newAdmin);
  /**
   * @dev Storage slot with the admin of the contract.
   * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
  /**
   * @dev Modifier to check whether the `msg.sender` is the admin.
   * If it is, it will run the function. Otherwise, it will delegate the call
   * to the implementation.
   */
  modifier ifAdmin() {
    if (msg.sender == _admin()) {
      _;
    } else {
      _fallback();
    }
  }
  /**
   * @return The address of the proxy admin.
   */
  function admin() external ifAdmin returns (address) {
    return _admin();
  }
  /**
   * @return The address of the implementation.
   */
  function implementation() external ifAdmin returns (address) {
    return _implementation();
  }
  /**
   * @dev Changes the admin of the proxy.
   * Only the current admin can call this function.
   * @param newAdmin Address to transfer proxy administration to.
   */
  function changeAdmin(address newAdmin) external ifAdmin {
    require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
    emit AdminChanged(_admin(), newAdmin);
    _setAdmin(newAdmin);
  }
  /**
   * @dev Upgrade the backing implementation of the proxy.
   * Only the admin can call this function.
   * @param newImplementation Address of the new implementation.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeTo(newImplementation);
  }
  /**
   * @dev Upgrade the backing implementation of the proxy and call a function
   * on the new implementation.
   * This is useful to initialize the proxied contract.
   * @param newImplementation Address of the new implementation.
   * @param data Data to send as msg.data in the low level call.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   */
  function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {
    _upgradeTo(newImplementation);
    (bool success,) = newImplementation.delegatecall(data);
    require(success);
  }
  /**
   * @return adm The admin slot.
   */
  function _admin() internal view returns (address adm) {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      adm := sload(slot)
    }
  }
  /**
   * @dev Sets the address of the proxy admin.
   * @param newAdmin Address of the new proxy admin.
   */
  function _setAdmin(address newAdmin) internal {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      sstore(slot, newAdmin)
    }
  }
  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal override virtual {
    require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
    super._willFallback();
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './Proxy.sol';
import '@openzeppelin/contracts/utils/Address.sol';
/**
 * @title UpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract UpgradeabilityProxy is Proxy {
  /**
   * @dev Contract constructor.
   * @param _logic Address of the initial implementation.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, bytes memory _data) public payable {
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if(_data.length > 0) {
      (bool success,) = _logic.delegatecall(_data);
      require(success);
    }
  }  
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address indexed implementation);
  /**
   * @dev Storage slot with the address of the current implementation.
   * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
  /**
   * @dev Returns the current implementation.
   * @return impl Address of the current implementation
   */
  function _implementation() internal override view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }
  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }
  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(Address.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      sstore(slot, newImplementation)
    }
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
abstract contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  fallback () payable external {
    _fallback();
  }
  /**
   * @dev Receive function.
   * Implemented entirely in `_fallback`.
   */
  receive () payable external {
    _fallback();
  }
  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal virtual view returns (address);
  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    assembly {
      // Copy msg.data. We take full control of memory in this inline assembly
      // block because it will not return to Solidity code. We overwrite the
      // Solidity scratch pad at memory position 0.
      calldatacopy(0, 0, calldatasize())
      // Call the implementation.
      // out and outsize are 0 because we don't know the size yet.
      let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
      // Copy the returned data.
      returndatacopy(0, 0, returndatasize())
      switch result
      // delegatecall returns 0 on error.
      case 0 { revert(0, returndatasize()) }
      default { return(0, returndatasize()) }
    }
  }
  /**
   * @dev Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal virtual {
  }
  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.
        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

//SPDX-License-Identifier: Unlicensed
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import "./interfaces/ServiceInterface.sol";
import "./interfaces/IServiceV21.sol";
import "./interfaces/IMultiNode.sol";
import "./interfaces/IERC1155Preset.sol";
import "./interfaces/StrongNFTBonusLegacyInterface.sol";
import "./interfaces/IStrongPool.sol";
import "./lib/SafeMath.sol";
import "./lib/ERC1155Receiver.sol";
contract StrongNFTBonusV10 {
  using SafeMath for uint256;
  event Staked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);
  event Unstaked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);
  ServiceInterface public CService;
  IERC1155Preset public CERC1155;
  StrongNFTBonusLegacyInterface public CStrongNFTBonus;
  bool public initDone;
  address public serviceAdmin;
  address public superAdmin;
  string[] public nftBonusNames;
  mapping(string => uint256) public nftBonusLowerBound;
  mapping(string => uint256) public nftBonusUpperBound;
  mapping(string => uint256) public nftBonusValue;
  mapping(string => uint256) public nftBonusEffectiveBlock;
  mapping(uint256 => address) public nftIdStakedToEntity;
  mapping(uint256 => uint128) public nftIdStakedToNodeId;
  mapping(uint256 => uint256) public nftIdStakedAtBlock;
  mapping(address => mapping(uint128 => uint256)) public entityNodeStakedNftId;
  mapping(bytes4 => bool) private _supportedInterfaces;
  mapping(string => uint8) public nftBonusNodesLimit;
  mapping(uint256 => uint8) public nftIdStakedToNodesCount;
  mapping(uint128 => uint256) public nodeIdStakedAtBlock;
  mapping(address => uint256[]) public entityStakedNftIds;
  mapping(address => mapping(uint128 => uint256)) public entityNodeStakedAtBlock;
  mapping(address => bool) private serviceContracts;
  mapping(address => mapping(address => mapping(uint128 => uint256))) public entityServiceNodeStakedNftId;
  mapping(address => mapping(address => mapping(uint128 => uint256))) public entityServiceNodeStakedAtBlock;
  event StakedToNode(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block, address serviceContract);
  event UnstakedFromNode(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block, address serviceContract);
  mapping(address => bool) private serviceUsesTime;
  mapping(address => mapping(string => uint256)) public serviceNftBonusEffectiveAt;
  mapping(address => mapping(string => uint256)) public serviceNftBonusValue;
  mapping(address => mapping(address => mapping(uint128 => uint256))) public entityServiceNodeStakedAtTimestamp;
  function init(address serviceContract, address nftContract, address strongNFTBonusContract, address serviceAdminAddress, address superAdminAddress) external {
    require(initDone == false, "init done");
    _registerInterface(0x01ffc9a7);
    _registerInterface(
      ERC1155Receiver(0).onERC1155Received.selector ^
      ERC1155Receiver(0).onERC1155BatchReceived.selector
    );
    serviceAdmin = serviceAdminAddress;
    superAdmin = superAdminAddress;
    CService = ServiceInterface(serviceContract);
    CERC1155 = IERC1155Preset(nftContract);
    CStrongNFTBonus = StrongNFTBonusLegacyInterface(strongNFTBonusContract);
    initDone = true;
  }
  //
  // Getters
  // -------------------------------------------------------------------------------------------------------------------
  function isNftStaked(uint256 _nftId) external view returns (bool) {
    return nftIdStakedToNodeId[_nftId] != 0 || nftIdStakedToNodesCount[_nftId] > 0;
  }
  function isNftStakedLegacy(uint256 _nftId) external view returns (bool) {
    return CStrongNFTBonus.isNftStaked(_nftId);
  }
  function getStakedNftId(address _entity, uint128 _nodeId, address _serviceContract) public view returns (uint256) {
    bool isEthNode = isEthereumNode(_serviceContract);
    uint256 stakedNftIdNew = entityServiceNodeStakedNftId[_entity][_serviceContract][_nodeId];
    uint256 stakedNftId = isEthNode ? entityNodeStakedNftId[_entity][_nodeId] : 0;
    uint256 stakedNftIdLegacy = isEthNode ? CStrongNFTBonus.getStakedNftId(_entity, _nodeId) : 0;
    return stakedNftIdNew != 0 ? stakedNftIdNew : (stakedNftId != 0 ? stakedNftId : stakedNftIdLegacy);
  }
  function getStakedNftIds(address _entity) external view returns (uint256[] memory) {
    return entityStakedNftIds[_entity];
  }
  function getStakedNftBonusName(address _entity, uint128 _nodeId, address _serviceContract) external view returns (string memory) {
    uint256 nftId = getStakedNftId(_entity, _nodeId, _serviceContract);
    return getNftBonusName(nftId);
  }
  function getNftBonusNames() external view returns (string[] memory) {
    return nftBonusNames;
  }
  function getNftNodesLeft(uint256 _nftId) external view returns (uint256) {
    return nftBonusNodesLimit[getNftBonusName(_nftId)] - nftIdStakedToNodesCount[_nftId];
  }
  function getNftBonusName(uint256 _nftId) public view returns (string memory) {
    for (uint8 i = 0; i < nftBonusNames.length; i++) {
      if (_nftId >= nftBonusLowerBound[nftBonusNames[i]] && _nftId <= nftBonusUpperBound[nftBonusNames[i]]) {
        return nftBonusNames[i];
      }
    }
    return "";
  }
  function getBonus(address _entity, uint128 _nodeId, uint256 _from, uint256 _to) external view returns (uint256) {
    return getBonusValue(_entity, _nodeId, _from, _to, 0);
  }
  function getBonusValue(address _entity, uint128 _nodeId, uint256 _from, uint256 _to, uint256 _bonusValue) public view returns (uint256) {
    address serviceContract = msg.sender;
    require(serviceContracts[serviceContract], "service doesnt exist");
    uint256 nftId = getStakedNftId(_entity, _nodeId, serviceContract);
    string memory bonusName = getNftBonusName(nftId);
    if (keccak256(abi.encode(bonusName)) == keccak256(abi.encode(""))) return 0;
    uint256 stakedAt = 0;
    if (serviceUsesTime[serviceContract]) {
      stakedAt = entityServiceNodeStakedAtTimestamp[_entity][serviceContract][_nodeId];
    }
    else {
      stakedAt = entityServiceNodeStakedAtBlock[_entity][serviceContract][_nodeId] > 0
      ? entityServiceNodeStakedAtBlock[_entity][serviceContract][_nodeId]
      : (entityNodeStakedAtBlock[_entity][_nodeId] > 0 ? entityNodeStakedAtBlock[_entity][_nodeId] : nftIdStakedAtBlock[nftId]);
    }
    uint256 bonusValue = _bonusValue != 0 ? _bonusValue : serviceNftBonusValue[serviceContract][bonusName] > 0
    ? serviceNftBonusValue[serviceContract][bonusName] : nftBonusValue[bonusName];
    uint256 effectiveAt = serviceNftBonusEffectiveAt[serviceContract][bonusName] > 0
    ? serviceNftBonusEffectiveAt[serviceContract][bonusName] : nftBonusEffectiveBlock[bonusName];
    uint256 startFrom = stakedAt > _from ? stakedAt : _from;
    if (startFrom < effectiveAt) {
      startFrom = effectiveAt;
    }
    if (stakedAt == 0 && keccak256(abi.encode(bonusName)) == keccak256(abi.encode("BRONZE"))) {
      return CStrongNFTBonus.getBonus(_entity, _nodeId, startFrom, _to);
    }
    if (nftId == 0) return 0;
    if (stakedAt == 0) return 0;
    if (effectiveAt == 0) return 0;
    if (startFrom >= _to) return 0;
    if (CERC1155.balanceOf(address(this), nftId) == 0) return 0;
    return _to.sub(startFrom).mul(bonusValue);
  }
  function isNftStaked(address _entity, uint256 _nftId, uint128 _nodeId, address _serviceContract) public view returns (bool) {
    return (isEthereumNode(_serviceContract) && entityNodeStakedNftId[_entity][_nodeId] == _nftId)
    || entityServiceNodeStakedNftId[_entity][_serviceContract][_nodeId] == _nftId;
  }
  function isEthereumNode(address _serviceContract) public view returns (bool) {
    return _serviceContract == address(CService);
  }
  //
  // Staking
  // -------------------------------------------------------------------------------------------------------------------
  function stakeNFT(uint256 _nftId, uint128 _nodeId, address _serviceContract) external payable {
    string memory bonusName = getNftBonusName(_nftId);
    require(keccak256(abi.encode(bonusName)) != keccak256(abi.encode("")), "not eligible");
    require(CERC1155.balanceOf(msg.sender, _nftId) != 0
      || (CERC1155.balanceOf(address(this), _nftId) != 0 && nftIdStakedToEntity[_nftId] == msg.sender), "not enough");
    require(nftIdStakedToNodesCount[_nftId] < nftBonusNodesLimit[bonusName], "over limit");
    require(serviceContracts[_serviceContract], "service doesnt exist");
    require(getStakedNftId(msg.sender, _nodeId, _serviceContract) == 0, "already staked");
    if (serviceUsesTime[_serviceContract]) require(IMultiNode(_serviceContract).doesNodeExist(msg.sender, uint(_nodeId)), "node doesnt exist");
    else require(IServiceV21(_serviceContract).doesNodeExist(msg.sender, _nodeId), "node doesnt exist");
    entityServiceNodeStakedNftId[msg.sender][_serviceContract][_nodeId] = _nftId;
    nftIdStakedToEntity[_nftId] = msg.sender;
    nftIdStakedToNodesCount[_nftId] += 1;
    if (serviceUsesTime[_serviceContract]) {
      entityServiceNodeStakedAtTimestamp[msg.sender][_serviceContract][_nodeId] = block.timestamp;
    }
    else {
      entityServiceNodeStakedAtBlock[msg.sender][_serviceContract][_nodeId] = block.number;
    }
    bool alreadyExists = false;
    for (uint8 i = 0; i < entityStakedNftIds[msg.sender].length; i++) {
      if (entityStakedNftIds[msg.sender][i] == _nftId) {
        alreadyExists = true;
        break;
      }
    }
    if (!alreadyExists) {
      entityStakedNftIds[msg.sender].push(_nftId);
    }
    if (CERC1155.balanceOf(address(this), _nftId) == 0) {
      CERC1155.safeTransferFrom(msg.sender, address(this), _nftId, 1, bytes(""));
    }
    emit StakedToNode(msg.sender, _nftId, _nodeId, serviceUsesTime[_serviceContract] ? block.timestamp : block.number, _serviceContract);
  }
  function migrateNFT(address _entity, uint128 _fromNodeId, uint128 _toNodeId, address _toServiceContract) external {
    address fromServiceContract = address(CService);
    uint256 nftId = getStakedNftId(_entity, _fromNodeId, fromServiceContract);
    require(msg.sender == fromServiceContract);
    require(serviceContracts[_toServiceContract], "service doesnt exist");
    require(IServiceV21(_toServiceContract).doesNodeExist(_entity, _toNodeId), "node doesnt exist");
    require(getStakedNftId(_entity, _toNodeId, _toServiceContract) == 0, "already staked");
    bool alreadyExists = false;
    for (uint8 i = 0; i < entityStakedNftIds[_entity].length; i++) {
      if (entityStakedNftIds[_entity][i] == nftId) {
        alreadyExists = true;
        break;
      }
    }
    if (nftId == 0 || !alreadyExists) {
      return;
    }
    entityServiceNodeStakedNftId[_entity][fromServiceContract][_fromNodeId] = 0;
    entityNodeStakedNftId[_entity][_fromNodeId] = 0;
    entityServiceNodeStakedNftId[_entity][_toServiceContract][_toNodeId] = nftId;
    nftIdStakedToEntity[nftId] = _entity;
    entityServiceNodeStakedAtTimestamp[_entity][_toServiceContract][_toNodeId] = block.timestamp;
    emit UnstakedFromNode(_entity, nftId, _fromNodeId, block.number, fromServiceContract);
    emit StakedToNode(_entity, nftId, _toNodeId, serviceUsesTime[_toServiceContract] ? block.timestamp : block.number, _toServiceContract);
  }
  function unstakeNFT(address _entity, uint128 _nodeId, address _serviceContract) external {
    uint256 nftId = getStakedNftId(_entity, _nodeId, _serviceContract);
    require(msg.sender == _serviceContract);
    require(serviceContracts[_serviceContract], "service doesnt exist");
    if (nftId == 0) return;
    entityServiceNodeStakedNftId[_entity][_serviceContract][_nodeId] = 0;
    nftIdStakedToNodeId[nftId] = 0;
    if (isEthereumNode(_serviceContract)) {
      entityNodeStakedNftId[_entity][_nodeId] = 0;
    }
    if (nftIdStakedToNodesCount[nftId] > 0) {
      nftIdStakedToNodesCount[nftId] -= 1;
    }
    if (nftIdStakedToNodesCount[nftId] == 0) {
      nftIdStakedToEntity[nftId] = address(0);
      for (uint8 i = 0; i < entityStakedNftIds[_entity].length; i++) {
        if (entityStakedNftIds[_entity][i] == nftId) {
          _deleteIndex(entityStakedNftIds[_entity], i);
          break;
        }
      }
      CERC1155.safeTransferFrom(address(this), _entity, nftId, 1, bytes(""));
    }
    emit UnstakedFromNode(_entity, nftId, _nodeId, block.number, _serviceContract);
  }
  function unStakeNFT(uint256 _nftId, uint128 _nodeId, uint256 _blockNumber, address _serviceContract, uint256 _claimedTotal, bytes memory _signature) external payable {
    require(isNftStaked(msg.sender, _nftId, _nodeId, _serviceContract), "wrong node");
    require(nftIdStakedToEntity[_nftId] != address(0), "not staked");
    require(nftIdStakedToEntity[_nftId] == msg.sender, "not staker");
    require(serviceContracts[_serviceContract], "service doesnt exist");
    bool hasNodeExpired = serviceUsesTime[_serviceContract]
      ? IMultiNode(_serviceContract).hasNodeExpired(msg.sender, uint(_nodeId))
      : (IServiceV21(_serviceContract).isNodeOverDue(msg.sender, _nodeId)
        || IServiceV21(_serviceContract).hasNodeExpired(msg.sender, _nodeId));
    if (!hasNodeExpired) {
      if (serviceUsesTime[_serviceContract]) IMultiNode(_serviceContract).claim{value : msg.value}(_nodeId, _blockNumber, address(0));
      else IServiceV21(_serviceContract).claim{value : msg.value}(_nodeId, _blockNumber, false, _claimedTotal, _signature);
    }
    entityServiceNodeStakedNftId[msg.sender][_serviceContract][_nodeId] = 0;
    nftIdStakedToNodeId[_nftId] = 0;
    if (isEthereumNode(_serviceContract)) {
      entityNodeStakedNftId[msg.sender][_nodeId] = 0;
    }
    if (nftIdStakedToNodesCount[_nftId] > 0) {
      nftIdStakedToNodesCount[_nftId] -= 1;
    }
    if (nftIdStakedToNodesCount[_nftId] == 0) {
      nftIdStakedToEntity[_nftId] = address(0);
      for (uint8 i = 0; i < entityStakedNftIds[msg.sender].length; i++) {
        if (entityStakedNftIds[msg.sender][i] == _nftId) {
          _deleteIndex(entityStakedNftIds[msg.sender], i);
          break;
        }
      }
      CERC1155.safeTransferFrom(address(this), msg.sender, _nftId, 1, bytes(""));
    }
    emit UnstakedFromNode(msg.sender, _nftId, _nodeId, _blockNumber, _serviceContract);
  }
  //
  // Admin
  // -------------------------------------------------------------------------------------------------------------------
  function updateServiceBonus(string memory _name, uint256 _value, uint256 _effectiveAt, address _serviceContract) external {
    require(msg.sender == serviceAdmin || msg.sender == superAdmin, "not admin");
    serviceNftBonusValue[_serviceContract][_name] = _value;
    serviceNftBonusEffectiveAt[_serviceContract][_name] = _effectiveAt;
  }
  function updateBonusLimits(string memory _name, uint256 _lowerBound, uint256 _upperBound, uint8 _nodesLimit) external {
    require(msg.sender == serviceAdmin || msg.sender == superAdmin, "not admin");
    bool alreadyExists = false;
    for (uint8 i = 0; i < nftBonusNames.length; i++) {
      if (keccak256(abi.encode(nftBonusNames[i])) == keccak256(abi.encode(_name))) {
        alreadyExists = true;
      }
    }
    if (!alreadyExists) {
      nftBonusNames.push(_name);
    }
    nftBonusLowerBound[_name] = _lowerBound;
    nftBonusUpperBound[_name] = _upperBound;
    nftBonusNodesLimit[_name] = _nodesLimit;
  }
  function updateBonus(string memory _name, uint256 _lowerBound, uint256 _upperBound, uint256 _value, uint256 _block, uint8 _nodesLimit) external {
    require(msg.sender == serviceAdmin || msg.sender == superAdmin, "not admin");
    bool alreadyExists = false;
    for (uint8 i = 0; i < nftBonusNames.length; i++) {
      if (keccak256(abi.encode(nftBonusNames[i])) == keccak256(abi.encode(_name))) {
        alreadyExists = true;
      }
    }
    if (!alreadyExists) {
      nftBonusNames.push(_name);
    }
    nftBonusLowerBound[_name] = _lowerBound;
    nftBonusUpperBound[_name] = _upperBound;
    nftBonusValue[_name] = _value;
    nftBonusEffectiveBlock[_name] = _block != 0 ? _block : block.number;
    nftBonusNodesLimit[_name] = _nodesLimit;
  }
  function updateContracts(address _nftContract) external {
    require(msg.sender == superAdmin, "not admin");
    CERC1155 = IERC1155Preset(_nftContract);
  }
  function addServiceContract(address _contract, bool _useTime) external {
    require(msg.sender == superAdmin, "not admin");
    serviceContracts[_contract] = true;
    serviceUsesTime[_contract] = _useTime;
  }
  function removeServiceContract(address _contract) external {
    require(msg.sender == superAdmin, "not admin");
    serviceContracts[_contract] = false;
    serviceUsesTime[_contract] = false;
  }
  function updateServiceAdmin(address newServiceAdmin) external {
    require(msg.sender == superAdmin, "not admin");
    serviceAdmin = newServiceAdmin;
  }
  //
  // ERC1155 support
  // -------------------------------------------------------------------------------------------------------------------
  function onERC1155Received(address, address, uint256, uint256, bytes memory) public virtual returns (bytes4) {
    return this.onERC1155Received.selector;
  }
  function onERC1155BatchReceived(address, address, uint256[] memory, uint256[] memory, bytes memory) public virtual returns (bytes4) {
    return this.onERC1155BatchReceived.selector;
  }
  function supportsInterface(bytes4 interfaceId) public view returns (bool) {
    return _supportedInterfaces[interfaceId];
  }
  function _registerInterface(bytes4 interfaceId) internal virtual {
    require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
    _supportedInterfaces[interfaceId] = true;
  }
  function _deleteIndex(uint256[] storage array, uint256 index) internal {
    uint256 lastIndex = array.length.sub(1);
    uint256 lastEntry = array[lastIndex];
    if (index == lastIndex) {
      array.pop();
    } else {
      array[index] = lastEntry;
      array.pop();
    }
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
interface ServiceInterface {
  function claimingFeeNumerator() external view returns(uint256);
  function claimingFeeDenominator() external view returns(uint256);
  function doesNodeExist(address entity, uint128 nodeId) external view returns (bool);
  function getNodeId(address entity, uint128 nodeId) external view returns (bytes memory);
  function getReward(address entity, uint128 nodeId) external view returns (uint256);
  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) external view returns (uint256);
  function hasNodeExpired(address _entity, uint _nodeId) external view returns (bool);
  function isEntityActive(address entity) external view returns (bool);
  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) external payable returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface IServiceV21 {
  function doesNodeExist(address entity, uint128 nodeId) external view returns (bool);
  function hasNodeExpired(address entity, uint128 nodeId) external view returns (bool);
  function isNodeOverDue(address entity, uint128 nodeId) external view returns (bool);
  function claim(uint128 nodeId, uint blockNumber, bool toStrongPool, uint256 claimedTotal, bytes memory signature) external payable returns (uint);
  // @deprecated
  function isEntityActive(address entity) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface IMultiNode {
  function doesNodeExist(address entity, uint nodeId) external view returns (bool);
  function hasNodeExpired(address entity, uint nodeId) external view returns (bool);
  function claim(uint nodeId, uint timestamp, address toStrongPool) external payable returns (uint);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155Preset {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values);
    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);
    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);
    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);
    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory);
    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;
    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);
    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external;
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
    /**
     * @dev Creates `amount` new tokens for `to`, of token type `id`.
     *
     * See {ERC1155-_mint}.
     *
     * Requirements:
     *
     * - the caller must have the `MINTER_ROLE`.
     */
    function mint(address to, uint256 id, uint256 amount, bytes memory data) external;
    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] variant of {mint}.
     */
    function mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) external;
    function getOwnerIdByIndex(address owner, uint256 index) external view returns (uint256);
    function getOwnerIdIndex(address owner, uint256 id) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
interface StrongNFTBonusLegacyInterface {
  function getBonus(address _entity, uint128 _nodeId, uint256 _fromBlock, uint256 _toBlock) external view returns (uint256);
  function getStakedNftId(address _entity, uint128 _nodeId) external view returns (uint256);
  function isNftStaked(uint256 _nftId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface IStrongPool {
  function mineFor(address miner, uint256 amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
  /**
   * @dev Returns the addition of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    uint256 c = a + b;
    if (c < a) return (false, 0);
    return (true, c);
  }
  /**
   * @dev Returns the substraction of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b > a) return (false, 0);
    return (true, a - b);
  }
  /**
   * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
    if (a == 0) return (true, 0);
    uint256 c = a * b;
    if (c / a != b) return (false, 0);
    return (true, c);
  }
  /**
   * @dev Returns the division of two unsigned integers, with a division by zero flag.
   *
   * _Available since v3.4._
   */
  function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b == 0) return (false, 0);
    return (true, a / b);
  }
  /**
   * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
   *
   * _Available since v3.4._
   */
  function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b == 0) return (false, 0);
    return (true, a % b);
  }
  /**
   * @dev Returns the addition of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `+` operator.
   *
   * Requirements:
   *
   * - Addition cannot overflow.
   */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");
    return c;
  }
  /**
   * @dev Returns the subtraction of two unsigned integers, reverting on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   *
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a, "SafeMath: subtraction overflow");
    return a - b;
  }
  /**
   * @dev Returns the multiplication of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `*` operator.
   *
   * Requirements:
   *
   * - Multiplication cannot overflow.
   */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) return 0;
    uint256 c = a * b;
    require(c / a == b, "SafeMath: multiplication overflow");
    return c;
  }
  /**
   * @dev Returns the integer division of two unsigned integers, reverting on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b > 0, "SafeMath: division by zero");
    return a / b;
  }
  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * reverting when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b > 0, "SafeMath: modulo by zero");
    return a % b;
  }
  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {trySub}.
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   *
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b <= a, errorMessage);
    return a - b;
  }
  /**
   * @dev Returns the integer division of two unsigned integers, reverting with custom message on
   * division by zero. The result is rounded towards zero.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryDiv}.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b > 0, errorMessage);
    return a / b;
  }
  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * reverting with custom message when dividing by zero.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryMod}.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   *
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
    require(b > 0, errorMessage);
    return a % b;
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.9;
import "../interfaces/IERC1155Receiver.sol";
import "./ERC165.sol";
/**
 * @dev _Available since v3.1._
 */
abstract contract ERC1155Receiver is ERC165, IERC1155Receiver {
    constructor() internal {
        _registerInterface(
            ERC1155Receiver(address(0)).onERC1155Received.selector ^
            ERC1155Receiver(address(0)).onERC1155BatchReceived.selector
        );
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.9;
import "./IERC165.sol";
/**
 * _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
        @dev Handles the receipt of a single ERC1155 token type. This function is
        called at the end of a `safeTransferFrom` after the balance has been updated.
        To accept the transfer, this must return
        `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
        (i.e. 0xf23a6e61, or its own function selector).
        @param operator The address which initiated the transfer (i.e. msg.sender)
        @param from The address which previously owned the token
        @param id The ID of the token being transferred
        @param value The amount of tokens being transferred
        @param data Additional data with no specified format
        @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
    */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    )
        external
        returns(bytes4);
    /**
        @dev Handles the receipt of a multiple ERC1155 token types. This function
        is called at the end of a `safeBatchTransferFrom` after the balances have
        been updated. To accept the transfer(s), this must return
        `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
        (i.e. 0xbc197c81, or its own function selector).
        @param operator The address which initiated the batch transfer (i.e. msg.sender)
        @param from The address which previously owned the token
        @param ids An array containing ids of each token being transferred (order and length must match values array)
        @param values An array containing amounts of each token being transferred (order and length must match ids array)
        @param data Additional data with no specified format
        @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
    */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    )
        external
        returns(bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.9;
import "../interfaces/IERC165.sol";
/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165 is IERC165 {
    /*
     * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
     */
    bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;
    constructor () internal {
        // Derived contracts need only register support for their own interfaces,
        // we register support for ERC165 itself here
        _registerInterface(_INTERFACE_ID_ERC165);
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     *
     * Time complexity O(1), guaranteed to always use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return _supportedInterfaces[interfaceId];
    }
    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.9;
/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './UpgradeabilityProxy.sol';
/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract AdminUpgradeabilityProxy is UpgradeabilityProxy {
  /**
   * Contract constructor.
   * @param _logic address of the initial implementation.
   * @param _admin Address of the proxy administrator.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, address _admin, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
    assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
    _setAdmin(_admin);
  }
  /**
   * @dev Emitted when the administration has been transferred.
   * @param previousAdmin Address of the previous admin.
   * @param newAdmin Address of the new admin.
   */
  event AdminChanged(address previousAdmin, address newAdmin);
  /**
   * @dev Storage slot with the admin of the contract.
   * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
  /**
   * @dev Modifier to check whether the `msg.sender` is the admin.
   * If it is, it will run the function. Otherwise, it will delegate the call
   * to the implementation.
   */
  modifier ifAdmin() {
    if (msg.sender == _admin()) {
      _;
    } else {
      _fallback();
    }
  }
  /**
   * @return The address of the proxy admin.
   */
  function admin() external ifAdmin returns (address) {
    return _admin();
  }
  /**
   * @return The address of the implementation.
   */
  function implementation() external ifAdmin returns (address) {
    return _implementation();
  }
  /**
   * @dev Changes the admin of the proxy.
   * Only the current admin can call this function.
   * @param newAdmin Address to transfer proxy administration to.
   */
  function changeAdmin(address newAdmin) external ifAdmin {
    require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
    emit AdminChanged(_admin(), newAdmin);
    _setAdmin(newAdmin);
  }
  /**
   * @dev Upgrade the backing implementation of the proxy.
   * Only the admin can call this function.
   * @param newImplementation Address of the new implementation.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeTo(newImplementation);
  }
  /**
   * @dev Upgrade the backing implementation of the proxy and call a function
   * on the new implementation.
   * This is useful to initialize the proxied contract.
   * @param newImplementation Address of the new implementation.
   * @param data Data to send as msg.data in the low level call.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   */
  function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {
    _upgradeTo(newImplementation);
    (bool success,) = newImplementation.delegatecall(data);
    require(success);
  }
  /**
   * @return adm The admin slot.
   */
  function _admin() internal view returns (address adm) {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      adm := sload(slot)
    }
  }
  /**
   * @dev Sets the address of the proxy admin.
   * @param newAdmin Address of the new proxy admin.
   */
  function _setAdmin(address newAdmin) internal {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      sstore(slot, newAdmin)
    }
  }
  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal override virtual {
    require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
    super._willFallback();
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './Proxy.sol';
import '@openzeppelin/contracts/utils/Address.sol';
/**
 * @title UpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract UpgradeabilityProxy is Proxy {
  /**
   * @dev Contract constructor.
   * @param _logic Address of the initial implementation.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, bytes memory _data) public payable {
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if(_data.length > 0) {
      (bool success,) = _logic.delegatecall(_data);
      require(success);
    }
  }  
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address indexed implementation);
  /**
   * @dev Storage slot with the address of the current implementation.
   * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
  /**
   * @dev Returns the current implementation.
   * @return impl Address of the current implementation
   */
  function _implementation() internal override view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }
  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }
  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(Address.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      sstore(slot, newImplementation)
    }
  }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
abstract contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  fallback () payable external {
    _fallback();
  }
  /**
   * @dev Receive function.
   * Implemented entirely in `_fallback`.
   */
  receive () payable external {
    _fallback();
  }
  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal virtual view returns (address);
  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    assembly {
      // Copy msg.data. We take full control of memory in this inline assembly
      // block because it will not return to Solidity code. We overwrite the
      // Solidity scratch pad at memory position 0.
      calldatacopy(0, 0, calldatasize())
      // Call the implementation.
      // out and outsize are 0 because we don't know the size yet.
      let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
      // Copy the returned data.
      returndatacopy(0, 0, returndatasize())
      switch result
      // delegatecall returns 0 on error.
      case 0 { revert(0, returndatasize()) }
      default { return(0, returndatasize()) }
    }
  }
  /**
   * @dev Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal virtual {
  }
  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.
        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

{"Context.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/*\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with GSN meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address payable) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes memory) {\n        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n        return msg.data;\n    }\n}\n"},"Counters.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"./SafeMath.sol\";\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath}\n * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never\n * directly accessed.\n */\nlibrary Counters {\n    using SafeMath for uint256;\n\n    struct Counter {\n        // This variable should never be directly accessed by users of the library: interactions must be restricted to\n        // the library\u0027s function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n        // this feature: see https://github.com/ethereum/solidity/issues/4637\n        uint256 _value; // default: 0\n    }\n\n    function current(Counter storage counter) internal view returns (uint256) {\n        return counter._value;\n    }\n\n    function increment(Counter storage counter) internal {\n        // The {SafeMath} overflow check can be skipped here, see the comment at the top\n        counter._value += 1;\n    }\n\n    function decrement(Counter storage counter) internal {\n        counter._value = counter._value.sub(1);\n    }\n}\n"},"ERC1155Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"./IERC1155Receiver.sol\";\nimport \"./ERC165.sol\";\n\n/**\n * @dev _Available since v3.1._\n */\nabstract contract ERC1155Receiver is ERC165, IERC1155Receiver {\n    constructor() public {\n        _registerInterface(\n            ERC1155Receiver(0).onERC1155Received.selector ^\n            ERC1155Receiver(0).onERC1155BatchReceived.selector\n        );\n    }\n}\n"},"ERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts may inherit from this and call {_registerInterface} to declare\n * their support of an interface.\n */\ncontract ERC165 is IERC165 {\n    /*\n     * bytes4(keccak256(\u0027supportsInterface(bytes4)\u0027)) == 0x01ffc9a7\n     */\n    bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;\n\n    /**\n     * @dev Mapping of interface ids to whether or not it\u0027s supported.\n     */\n    mapping(bytes4 =\u003e bool) private _supportedInterfaces;\n\n    constructor () internal {\n        // Derived contracts need only register support for their own interfaces,\n        // we register support for ERC165 itself here\n        _registerInterface(_INTERFACE_ID_ERC165);\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     *\n     * Time complexity O(1), guaranteed to always use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) public view override returns (bool) {\n        return _supportedInterfaces[interfaceId];\n    }\n\n    /**\n     * @dev Registers the contract as an implementer of the interface defined by\n     * `interfaceId`. Support of the actual ERC165 interface is automatic and\n     * registering its interface id is not required.\n     *\n     * See {IERC165-supportsInterface}.\n     *\n     * Requirements:\n     *\n     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).\n     */\n    function _registerInterface(bytes4 interfaceId) internal virtual {\n        require(interfaceId != 0xffffffff, \"ERC165: invalid interface id\");\n        _supportedInterfaces[interfaceId] = true;\n    }\n}\n"},"IERC1155Preset.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.2;\n\n/**\n * @dev Required interface of an ERC1155 compliant contract, as defined in the\n * https://eips.ethereum.org/EIPS/eip-1155[EIP].\n *\n * _Available since v3.1._\n */\ninterface IERC1155Preset {\n    /**\n     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.\n     */\n    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);\n\n    /**\n     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all\n     * transfers.\n     */\n    event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values);\n\n    /**\n     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to\n     * `approved`.\n     */\n    event ApprovalForAll(address indexed account, address indexed operator, bool approved);\n\n    /**\n     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.\n     *\n     * If an {URI} event was emitted for `id`, the standard\n     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value\n     * returned by {IERC1155MetadataURI-uri}.\n     */\n    event URI(string value, uint256 indexed id);\n\n    /**\n     * @dev Returns the amount of tokens of token type `id` owned by `account`.\n     *\n     * Requirements:\n     *\n     * - `account` cannot be the zero address.\n     */\n    function balanceOf(address account, uint256 id) external view returns (uint256);\n\n    /**\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.\n     *\n     * Requirements:\n     *\n     * - `accounts` and `ids` must have the same length.\n     */\n    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory);\n\n    /**\n     * @dev Grants or revokes permission to `operator` to transfer the caller\u0027s tokens, according to `approved`,\n     *\n     * Emits an {ApprovalForAll} event.\n     *\n     * Requirements:\n     *\n     * - `operator` cannot be the caller.\n     */\n    function setApprovalForAll(address operator, bool approved) external;\n\n    /**\n     * @dev Returns true if `operator` is approved to transfer ``account``\u0027s tokens.\n     *\n     * See {setApprovalForAll}.\n     */\n    function isApprovedForAll(address account, address operator) external view returns (bool);\n\n    /**\n     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.\n     *\n     * Emits a {TransferSingle} event.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - If the caller is not `from`, it must be have been approved to spend ``from``\u0027s tokens via {setApprovalForAll}.\n     * - `from` must have a balance of tokens of type `id` of at least `amount`.\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the\n     * acceptance magic value.\n     */\n    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;\n\n    /**\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.\n     *\n     * Emits a {TransferBatch} event.\n     *\n     * Requirements:\n     *\n     * - `ids` and `amounts` must have the same length.\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the\n     * acceptance magic value.\n     */\n    function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external;\n\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n\n    /**\n     * @dev Creates `amount` new tokens for `to`, of token type `id`.\n     *\n     * See {ERC1155-_mint}.\n     *\n     * Requirements:\n     *\n     * - the caller must have the `MINTER_ROLE`.\n     */\n    function mint(address to, uint256 id, uint256 amount, bytes memory data) external;\n\n    /**\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] variant of {mint}.\n     */\n    function mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) external;\n\n    function getOwnerIdByIndex(address owner, uint256 index) external view returns (uint256);\n\n    function getOwnerIdIndex(address owner, uint256 id) external view returns (uint256);\n}\n"},"IERC1155Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * _Available since v3.1._\n */\ninterface IERC1155Receiver is IERC165 {\n\n    /**\n        @dev Handles the receipt of a single ERC1155 token type. This function is\n        called at the end of a `safeTransferFrom` after the balance has been updated.\n        To accept the transfer, this must return\n        `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))`\n        (i.e. 0xf23a6e61, or its own function selector).\n        @param operator The address which initiated the transfer (i.e. msg.sender)\n        @param from The address which previously owned the token\n        @param id The ID of the token being transferred\n        @param value The amount of tokens being transferred\n        @param data Additional data with no specified format\n        @return `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))` if transfer is allowed\n    */\n    function onERC1155Received(\n        address operator,\n        address from,\n        uint256 id,\n        uint256 value,\n        bytes calldata data\n    )\n        external\n        returns(bytes4);\n\n    /**\n        @dev Handles the receipt of a multiple ERC1155 token types. This function\n        is called at the end of a `safeBatchTransferFrom` after the balances have\n        been updated. To accept the transfer(s), this must return\n        `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))`\n        (i.e. 0xbc197c81, or its own function selector).\n        @param operator The address which initiated the batch transfer (i.e. msg.sender)\n        @param from The address which previously owned the token\n        @param ids An array containing ids of each token being transferred (order and length must match values array)\n        @param values An array containing amounts of each token being transferred (order and length must match ids array)\n        @param data Additional data with no specified format\n        @return `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))` if transfer is allowed\n    */\n    function onERC1155BatchReceived(\n        address operator,\n        address from,\n        uint256[] calldata ids,\n        uint256[] calldata values,\n        bytes calldata data\n    )\n        external\n        returns(bytes4);\n}\n"},"IERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"},"IERC20.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity \u003e=0.6.0 \u003c0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller\u0027s account to `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller\u0027s tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender\u0027s allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\n     * allowance mechanism. `amount` is then deducted from the caller\u0027s\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n"},"PoolV4.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./StrongPoolInterface.sol\";\nimport \"./rewards.sol\";\n\ncontract PoolV4 {\n  event Mined(address indexed miner, uint256 amount);\n  event Unmined(address indexed miner, uint256 amount);\n  event Claimed(address indexed miner, uint256 reward);\n\n  using SafeMath for uint256;\n\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public parameterAdmin;\n  address payable public feeCollector;\n\n  IERC20 public token;\n  IERC20 public strongToken;\n  StrongPoolInterface public strongPool;\n\n  mapping(address =\u003e uint256) public minerBalance;\n  uint256 public totalBalance;\n  mapping(address =\u003e uint256) public minerBlockLastClaimedOn;\n\n  uint256 public rewardBalance;\n\n  uint256 public rewardPerBlockNumerator;\n  uint256 public rewardPerBlockDenominator;\n\n  uint256 public miningFeeNumerator;\n  uint256 public miningFeeDenominator;\n\n  uint256 public unminingFeeNumerator;\n  uint256 public unminingFeeDenominator;\n\n  uint256 public claimingFeeNumerator;\n  uint256 public claimingFeeDenominator;\n\n  uint256 public claimingFeeInWei;\n\n  uint256 public rewardPerBlockNumeratorNew;\n  uint256 public rewardPerBlockDenominatorNew;\n  uint256 public rewardPerBlockNewEffectiveBlock;\n\n  function init(\n    address strongTokenAddress,\n    address tokenAddress,\n    address strongPoolAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 rewardPerBlockNumeratorValue,\n    uint256 rewardPerBlockDenominatorValue,\n    uint256 miningFeeNumeratorValue,\n    uint256 miningFeeDenominatorValue,\n    uint256 unminingFeeNumeratorValue,\n    uint256 unminingFeeDenominatorValue,\n    uint256 claimingFeeNumeratorValue,\n    uint256 claimingFeeDenominatorValue\n  ) public {\n    require(!initDone, \"init done\");\n    strongToken = IERC20(strongTokenAddress);\n    token = IERC20(tokenAddress);\n    strongPool = StrongPoolInterface(strongPoolAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;\n    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;\n    miningFeeNumerator = miningFeeNumeratorValue;\n    miningFeeDenominator = miningFeeDenominatorValue;\n    unminingFeeNumerator = unminingFeeNumeratorValue;\n    unminingFeeDenominator = unminingFeeDenominatorValue;\n    claimingFeeNumerator = claimingFeeNumeratorValue;\n    claimingFeeDenominator = claimingFeeDenominatorValue;\n    initDone = true;\n  }\n\n  // ADMIN\n  // *************************************************************************************\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(newPendingAdmin != address(0), \"zero\");\n    require(msg.sender == admin, \"not admin\");\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \"not pendingAdmin\");\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(newPendingSuperAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin, \"not superAdmin\");\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \"not pendingSuperAdmin\");\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  // REWARD\n  // *************************************************************************************\n  function updateRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    rewardPerBlockNumerator = numerator;\n    rewardPerBlockDenominator = denominator;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin, \"not an admin\");\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin, \"not an admin\");\n    require(amount \u003e 0, \"zero\");\n    require(rewardBalance \u003e= amount, \"not enough\");\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  // FEES\n  // *************************************************************************************\n  function updateFeeCollector(address payable newFeeCollector) public {\n    require(newFeeCollector != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    feeCollector = newFeeCollector;\n  }\n\n  function updateMiningFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    miningFeeNumerator = numerator;\n    miningFeeDenominator = denominator;\n  }\n\n  function updateUnminingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    unminingFeeNumerator = numerator;\n    unminingFeeDenominator = denominator;\n  }\n\n  function updateClaimingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    claimingFeeNumerator = numerator;\n    claimingFeeDenominator = denominator;\n  }\n\n  // CORE\n  // *************************************************************************************\n  function mine(uint256 amount) public payable {\n    require(amount \u003e 0, \"zero\");\n    uint256 fee = amount.mul(miningFeeNumerator).div(miningFeeDenominator);\n    require(msg.value == fee, \"invalid fee\");\n    feeCollector.transfer(msg.value);\n    if (block.number \u003e minerBlockLastClaimedOn[msg.sender]) {\n      uint256 reward = getReward(msg.sender);\n      if (reward \u003e 0) {\n        rewardBalance = rewardBalance.sub(reward);\n        strongToken.approve(address(strongPool), reward);\n        strongPool.mineFor(msg.sender, reward);\n        minerBlockLastClaimedOn[msg.sender] = block.number;\n      }\n    }\n    token.transferFrom(msg.sender, address(this), amount);\n    minerBalance[msg.sender] = minerBalance[msg.sender].add(amount);\n    totalBalance = totalBalance.add(amount);\n    if (minerBlockLastClaimedOn[msg.sender] == 0) {\n      minerBlockLastClaimedOn[msg.sender] = block.number;\n    }\n    emit Mined(msg.sender, amount);\n  }\n\n  function unmine(uint256 amount) public payable {\n    require(amount \u003e 0, \"zero\");\n    uint256 fee = amount.mul(unminingFeeNumerator).div(unminingFeeDenominator);\n    require(msg.value == fee, \"invalid fee\");\n    require(minerBalance[msg.sender] \u003e= amount, \"not enough\");\n    feeCollector.transfer(msg.value);\n    if (block.number \u003e minerBlockLastClaimedOn[msg.sender]) {\n      uint256 reward = getReward(msg.sender);\n      if (reward \u003e 0) {\n        rewardBalance = rewardBalance.sub(reward);\n        strongToken.approve(address(strongPool), reward);\n        strongPool.mineFor(msg.sender, reward);\n        minerBlockLastClaimedOn[msg.sender] = block.number;\n      }\n    }\n    minerBalance[msg.sender] = minerBalance[msg.sender].sub(amount);\n    totalBalance = totalBalance.sub(amount);\n    token.transfer(msg.sender, amount);\n    if (minerBalance[msg.sender] == 0) {\n      minerBlockLastClaimedOn[msg.sender] = 0;\n    }\n    emit Unmined(msg.sender, amount);\n  }\n\n  function claim(uint256 blockNumber) public payable {\n    require(blockNumber \u003c= block.number, \"invalid block number\");\n    require(minerBlockLastClaimedOn[msg.sender] != 0, \"error\");\n    require(blockNumber \u003e minerBlockLastClaimedOn[msg.sender], \"too soon\");\n    uint256 reward = getRewardByBlock(msg.sender, blockNumber);\n    require(reward \u003e 0, \"no reward\");\n    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n    require(msg.value == fee, \"invalid fee\");\n    feeCollector.transfer(msg.value);\n    strongToken.approve(address(strongPool), reward);\n    strongPool.mineFor(msg.sender, reward);\n    rewardBalance = rewardBalance.sub(reward);\n    minerBlockLastClaimedOn[msg.sender] = blockNumber;\n    emit Claimed(msg.sender, reward);\n  }\n\n  function getReward(address miner) public view returns (uint256) {\n    return getRewardByBlock(miner, block.number);\n  }\n\n  function getRewardByBlock(address miner, uint256 blockNumber) public view returns (uint256) {\n    uint256 blockLastClaimedOn = minerBlockLastClaimedOn[miner];\n\n    if (blockNumber \u003e block.number) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n    if (blockNumber \u003c blockLastClaimedOn) return 0;\n    if (totalBalance == 0) return 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, blockNumber);\n    uint256 rewardOld = rewardPerBlockDenominator \u003e 0 ? rewardBlocks[0].mul(rewardPerBlockNumerator).div(rewardPerBlockDenominator) : 0;\n    uint256 rewardNew = rewardPerBlockDenominatorNew \u003e 0 ? rewardBlocks[1].mul(rewardPerBlockNumeratorNew).div(rewardPerBlockDenominatorNew) : 0;\n\n    return rewardOld.add(rewardNew).mul(minerBalance[miner]).div(totalBalance);\n  }\n\n  function updateRewardPerBlockNew(\n    uint256 numerator,\n    uint256 denominator,\n    uint256 effectiveBlock\n  ) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n\n    rewardPerBlockNumeratorNew = numerator;\n    rewardPerBlockDenominatorNew = denominator;\n    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;\n  }\n}\n"},"rewards.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\nimport \"./SafeMath.sol\";\n\nlibrary rewards {\n\n    using SafeMath for uint256;\n\n    function blocks(uint256 lastClaimedOnBlock, uint256 newRewardBlock, uint256 blockNumber) internal pure returns (uint256[2] memory) {\n        if (lastClaimedOnBlock \u003e= blockNumber) return [uint256(0), uint256(0)];\n\n        if (blockNumber \u003c= newRewardBlock || newRewardBlock == 0) {\n            return [blockNumber.sub(lastClaimedOnBlock), uint256(0)];\n        }\n        else if (lastClaimedOnBlock \u003e= newRewardBlock) {\n            return [uint256(0), blockNumber.sub(lastClaimedOnBlock)];\n        }\n        else {\n            return [newRewardBlock.sub(lastClaimedOnBlock), blockNumber.sub(newRewardBlock)];\n        }\n    }\n\n}\n"},"SafeMath.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity \u003e=0.6.0 \u003c0.8.0;\n\n/**\n * @dev Wrappers over Solidity\u0027s arithmetic operations with added overflow\n * checks.\n *\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\n * in bugs, because programmers usually assume that an overflow raises an\n * error, which is the standard behavior in high level programming languages.\n * `SafeMath` restores this intuition by reverting the transaction when an\n * operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it\u0027s recommended to use it always.\n */\nlibrary SafeMath {\n    /**\n     * @dev Returns the addition of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity\u0027s `+` operator.\n     *\n     * Requirements:\n     *\n     * - Addition cannot overflow.\n     */\n    function add(uint256 a, uint256 b) internal pure returns (uint256) {\n        uint256 c = a + b;\n        require(c \u003e= a, \"SafeMath: addition overflow\");\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting on\n     * overflow (when the result is negative).\n     *\n     * Counterpart to Solidity\u0027s `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n        return sub(a, b, \"SafeMath: subtraction overflow\");\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n     * overflow (when the result is negative).\n     *\n     * Counterpart to Solidity\u0027s `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n        require(b \u003c= a, errorMessage);\n        uint256 c = a - b;\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the multiplication of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity\u0027s `*` operator.\n     *\n     * Requirements:\n     *\n     * - Multiplication cannot overflow.\n     */\n    function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n        // Gas optimization: this is cheaper than requiring \u0027a\u0027 not being zero, but the\n        // benefit is lost if \u0027b\u0027 is also tested.\n        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n        if (a == 0) {\n            return 0;\n        }\n\n        uint256 c = a * b;\n        require(c / a == b, \"SafeMath: multiplication overflow\");\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers. Reverts on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity\u0027s `/` operator. Note: this function uses a\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\n     * uses an invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(uint256 a, uint256 b) internal pure returns (uint256) {\n        return div(a, b, \"SafeMath: division by zero\");\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity\u0027s `/` operator. Note: this function uses a\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\n     * uses an invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n        require(b \u003e 0, errorMessage);\n        uint256 c = a / b;\n        // assert(a == b * c + a % b); // There is no case in which this doesn\u0027t hold\n\n        return c;\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * Reverts when dividing by zero.\n     *\n     * Counterpart to Solidity\u0027s `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n        return mod(a, b, \"SafeMath: modulo by zero\");\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * Reverts with custom message when dividing by zero.\n     *\n     * Counterpart to Solidity\u0027s `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n        require(b != 0, errorMessage);\n        return a % b;\n    }\n}\n"},"ServiceInterface.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\ninterface ServiceInterface {\n  function claimingFeeNumerator() external view returns(uint256);\n\n  function claimingFeeDenominator() external view returns(uint256);\n\n  function doesNodeExist(address entity, uint128 nodeId) external view returns (bool);\n\n  function getNodeId(address entity, uint128 nodeId) external view returns (bytes memory);\n\n  function getReward(address entity, uint128 nodeId) external view returns (uint256);\n\n  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) external view returns (uint256);\n\n  function getTraunch(address entity) external view returns (uint256);\n\n  function isEntityActive(address entity) external view returns (bool);\n\n  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) external payable;\n}\n"},"ServiceInterfaceV10.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\ninterface ServiceInterfaceV10 {\n  function traunch(address) external view returns(uint256);\n\n  function claimingFeeNumerator() external view returns(uint256);\n\n  function claimingFeeDenominator() external view returns(uint256);\n\n  function doesNodeExist(address entity, uint128 nodeId) external view returns (bool);\n\n  function getNodeId(address entity, uint128 nodeId) external view returns (bytes memory);\n\n  function getReward(address entity, uint128 nodeId) external view returns (uint256);\n\n  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) external view returns (uint256);\n\n  function isEntityActive(address entity) external view returns (bool);\n\n  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) external payable;\n}\n"},"ServiceV10.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./StrongPoolInterface.sol\";\nimport \"./IERC1155Preset.sol\";\nimport \"./StrongNFTBonusInterface.sol\";\nimport \"./rewards.sol\";\n\ncontract ServiceV10 {\n  event Requested(address indexed miner);\n  event Claimed(address indexed miner, uint256 reward);\n\n  using SafeMath for uint256;\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public serviceAdmin;\n  address public parameterAdmin;\n  address payable public feeCollector;\n\n  IERC20 public strongToken;\n  StrongPoolInterface public strongPool;\n\n  uint256 public rewardPerBlockNumerator;\n  uint256 public rewardPerBlockDenominator;\n\n  uint256 public naasRewardPerBlockNumerator;\n  uint256 public naasRewardPerBlockDenominator;\n\n  uint256 public claimingFeeNumerator;\n  uint256 public claimingFeeDenominator;\n\n  uint256 public requestingFeeInWei;\n\n  uint256 public strongFeeInWei;\n\n  uint256 public recurringFeeInWei;\n  uint256 public recurringNaaSFeeInWei;\n  uint256 public recurringPaymentCycleInBlocks;\n\n  uint256 public rewardBalance;\n\n  mapping(address =\u003e uint256) public entityBlockLastClaimedOn;\n\n  address[] public entities;\n  mapping(address =\u003e uint256) public entityIndex;\n  mapping(address =\u003e bool) public entityActive;\n  mapping(address =\u003e bool) public requestPending;\n  mapping(address =\u003e bool) public entityIsNaaS;\n  mapping(address =\u003e uint256) public paidOnBlock;\n  uint256 public activeEntities;\n\n  string public desciption;\n\n  uint256 public claimingFeeInWei;\n\n  uint256 public naasRequestingFeeInWei;\n\n  uint256 public naasStrongFeeInWei;\n\n  bool public removedTokens;\n\n  mapping(address =\u003e uint256) public traunch;\n\n  uint256 public currentTraunch;\n\n  mapping(bytes =\u003e bool) public entityNodeIsActive;\n  mapping(bytes =\u003e bool) public entityNodeIsBYON;\n  mapping(bytes =\u003e uint256) public entityNodeTraunch;\n  mapping(bytes =\u003e uint256) public entityNodePaidOnBlock;\n  mapping(bytes =\u003e uint256) public entityNodeClaimedOnBlock;\n  mapping(address =\u003e uint128) public entityNodeCount;\n\n  event Paid(address indexed entity, uint128 nodeId, bool isBYON, bool isRenewal, uint256 upToBlockNumber);\n  event Migrated(address indexed from, address indexed to, uint128 fromNodeId, uint128 toNodeId, bool isBYON);\n\n  uint256 public rewardPerBlockNumeratorNew;\n  uint256 public rewardPerBlockDenominatorNew;\n  uint256 public naasRewardPerBlockNumeratorNew;\n  uint256 public naasRewardPerBlockDenominatorNew;\n  uint256 public rewardPerBlockNewEffectiveBlock;\n\n  StrongNFTBonusInterface public strongNFTBonus;\n\n  function init(\n    address strongTokenAddress,\n    address strongPoolAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 rewardPerBlockNumeratorValue,\n    uint256 rewardPerBlockDenominatorValue,\n    uint256 naasRewardPerBlockNumeratorValue,\n    uint256 naasRewardPerBlockDenominatorValue,\n    uint256 requestingFeeInWeiValue,\n    uint256 strongFeeInWeiValue,\n    uint256 recurringFeeInWeiValue,\n    uint256 recurringNaaSFeeInWeiValue,\n    uint256 recurringPaymentCycleInBlocksValue,\n    uint256 claimingFeeNumeratorValue,\n    uint256 claimingFeeDenominatorValue,\n    string memory desc\n  ) public {\n    require(!initDone, \"init done\");\n    strongToken = IERC20(strongTokenAddress);\n    strongPool = StrongPoolInterface(strongPoolAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;\n    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;\n    naasRewardPerBlockNumerator = naasRewardPerBlockNumeratorValue;\n    naasRewardPerBlockDenominator = naasRewardPerBlockDenominatorValue;\n    requestingFeeInWei = requestingFeeInWeiValue;\n    strongFeeInWei = strongFeeInWeiValue;\n    recurringFeeInWei = recurringFeeInWeiValue;\n    recurringNaaSFeeInWei = recurringNaaSFeeInWeiValue;\n    claimingFeeNumerator = claimingFeeNumeratorValue;\n    claimingFeeDenominator = claimingFeeDenominatorValue;\n    recurringPaymentCycleInBlocks = recurringPaymentCycleInBlocksValue;\n    desciption = desc;\n    initDone = true;\n  }\n\n  // ADMIN\n  // *************************************************************************************\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(msg.sender == superAdmin);\n    serviceAdmin = newServiceAdmin;\n  }\n\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function updateFeeCollector(address payable newFeeCollector) public {\n    require(newFeeCollector != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    feeCollector = newFeeCollector;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(msg.sender == admin, \"not admin\");\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \"not pendingAdmin\");\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(msg.sender == superAdmin, \"not superAdmin\");\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \"not pendingSuperAdmin\");\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  // ENTITIES\n  // *************************************************************************************\n\n  function getEntities() public view returns (address[] memory) {\n    return entities;\n  }\n\n  function isEntityActive(address entity) public view returns (bool) {\n    return entityActive[entity];\n  }\n\n  // TRAUNCH\n  // *************************************************************************************\n\n  function updateCurrentTraunch(uint256 value) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    currentTraunch = value;\n  }\n\n  // REWARD\n  // *************************************************************************************\n\n  function updateRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(denominator != 0, \"invalid value\");\n    rewardPerBlockNumerator = numerator;\n    rewardPerBlockDenominator = denominator;\n  }\n\n  function updateNaaSRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(denominator != 0, \"invalid value\");\n    naasRewardPerBlockNumerator = numerator;\n    naasRewardPerBlockDenominator = denominator;\n  }\n\n  function updateRewardPerBlockNew(\n    uint256 numerator,\n    uint256 denominator,\n    uint256 numeratorNass,\n    uint256 denominatorNass,\n    uint256 effectiveBlock\n  ) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n\n    rewardPerBlockNumeratorNew = numerator;\n    rewardPerBlockDenominatorNew = denominator;\n    naasRewardPerBlockNumeratorNew = numeratorNass;\n    naasRewardPerBlockDenominatorNew = denominatorNass;\n    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    require(amount \u003e 0, \"zero\");\n    require(rewardBalance \u003e= amount, \"not enough\");\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  // FEES\n  // *************************************************************************************\n\n  function updateRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    requestingFeeInWei = feeInWei;\n  }\n\n  function updateStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    strongFeeInWei = feeInWei;\n  }\n\n  function updateNaasRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    naasRequestingFeeInWei = feeInWei;\n  }\n\n  function updateNaasStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    naasStrongFeeInWei = feeInWei;\n  }\n\n  function updateClaimingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(denominator != 0, \"invalid value\");\n    claimingFeeNumerator = numerator;\n    claimingFeeDenominator = denominator;\n  }\n\n  function updateRecurringFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    recurringFeeInWei = feeInWei;\n  }\n\n  function updateRecurringNaaSFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    recurringNaaSFeeInWei = feeInWei;\n  }\n\n  function updateRecurringPaymentCycleInBlocks(uint256 blocks) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(blocks \u003e 0, \"zero\");\n    recurringPaymentCycleInBlocks = blocks;\n  }\n\n  // CORE\n  // *************************************************************************************\n\n  function requestAccess(bool isNaaS) public payable {\n    uint256 rFee;\n    uint256 sFee;\n\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    uint128 nodeId = entityNodeCount[msg.sender] + 1;\n    bytes memory id = getNodeId(msg.sender, nodeId);\n\n    if (isNaaS) {\n      rFee = naasRequestingFeeInWei;\n      sFee = naasStrongFeeInWei;\n      activeEntities = activeEntities.add(1);\n    } else {\n      rFee = requestingFeeInWei;\n      sFee = strongFeeInWei;\n      entityNodeIsBYON[id] = true;\n    }\n\n    require(msg.value == rFee, \"invalid fee\");\n\n    entityNodePaidOnBlock[id] = block.number;\n    entityNodeTraunch[id] = currentTraunch;\n    entityNodeClaimedOnBlock[id] = block.number;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] + 1;\n\n    feeCollector.transfer(msg.value);\n    strongToken.transferFrom(msg.sender, address(this), sFee);\n    strongToken.transfer(feeCollector, sFee);\n\n    emit Paid(msg.sender, nodeId, entityNodeIsBYON[id], false, entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks));\n  }\n\n  function setEntityActiveStatus(address entity, bool status) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    uint256 index = entityIndex[entity];\n    require(entities[index] == entity, \"invalid entity\");\n    require(entityActive[entity] != status, \"already set\");\n    entityActive[entity] = status;\n    if (status) {\n      activeEntities = activeEntities.add(1);\n      entityBlockLastClaimedOn[entity] = block.number;\n    } else {\n      activeEntities = activeEntities.sub(1);\n      entityBlockLastClaimedOn[entity] = 0;\n    }\n  }\n\n  function payFee(uint128 nodeId) public payable {\n    address sender = msg.sender == address(this) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    bool isExpired = block.number \u003e blockLastPaidOn.add(recurringPaymentCycleInBlocks).add(recurringPaymentCycleInBlocks);\n\n    require(doesNodeExist(sender, nodeId), \"doesnt exist\");\n    require(isExpired == false || msg.sender == address(this), \"too late\");\n\n    if (isExpired) {\n      return;\n    }\n\n    if (entityNodeIsBYON[id]) {\n      require(msg.value == recurringFeeInWei, \"invalid fee\");\n    } else {\n      require(msg.value == recurringNaaSFeeInWei, \"invalid fee\");\n    }\n\n    feeCollector.transfer(msg.value);\n    entityNodePaidOnBlock[id] = entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks);\n\n    emit Paid(sender, nodeId, entityNodeIsBYON[id], true, entityNodePaidOnBlock[id]);\n  }\n\n  function getReward(address entity, uint128 nodeId) public view returns (uint256) {\n    return getRewardByBlock(entity, nodeId, block.number);\n  }\n\n  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (hasLegacyNode(entity)) {\n      return getRewardByBlockLegacy(entity, blockNumber);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n\n    if (blockNumber \u003e block.number) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n    if (blockNumber \u003c blockLastClaimedOn) return 0;\n    if (activeEntities == 0) return 0;\n    if (entityNodeIsBYON[id] \u0026\u0026 !entityNodeIsActive[id]) return 0;\n\n    uint256 rewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumerator : naasRewardPerBlockNumerator;\n    uint256 rewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominator : naasRewardPerBlockDenominator;\n    uint256 newRewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumeratorNew : naasRewardPerBlockNumeratorNew;\n    uint256 newRewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominatorNew : naasRewardPerBlockDenominatorNew;\n\n    uint256 bonus = address(strongNFTBonus) != address(0)\n    ? strongNFTBonus.getBonus(entity, nodeId, blockLastClaimedOn, blockNumber)\n    : 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, blockNumber);\n    uint256 rewardOld = rewardDenominator \u003e 0 ? rewardBlocks[0].mul(rewardNumerator).div(rewardDenominator) : 0;\n    uint256 rewardNew = newRewardDenominator \u003e 0 ? rewardBlocks[1].mul(newRewardNumerator).div(newRewardDenominator) : 0;\n\n    return rewardOld.add(rewardNew).add(bonus);\n  }\n\n  function getRewardByBlockLegacy(address entity, uint256 blockNumber) public view returns (uint256) {\n    if (blockNumber \u003e block.number) return 0;\n    if (entityBlockLastClaimedOn[entity] == 0) return 0;\n    if (blockNumber \u003c entityBlockLastClaimedOn[entity]) return 0;\n    if (activeEntities == 0) return 0;\n    uint256 blockResult = blockNumber.sub(entityBlockLastClaimedOn[entity]);\n    uint256 rewardNumerator;\n    uint256 rewardDenominator;\n    if (entityIsNaaS[entity]) {\n      rewardNumerator = naasRewardPerBlockNumerator;\n      rewardDenominator = naasRewardPerBlockDenominator;\n    } else {\n      rewardNumerator = rewardPerBlockNumerator;\n      rewardDenominator = rewardPerBlockDenominator;\n    }\n    uint256 rewardPerBlockResult = blockResult.mul(rewardNumerator).div(rewardDenominator);\n\n    return rewardPerBlockResult;\n  }\n\n  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) public payable {\n    address sender = msg.sender == address(this) || msg.sender == address(strongNFTBonus) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n\n    require(blockLastClaimedOn != 0, \"never claimed\");\n    require(blockNumber \u003c= block.number, \"invalid block\");\n    require(blockNumber \u003e blockLastClaimedOn, \"too soon\");\n    require(!entityNodeIsBYON[id] || entityNodeIsActive[id], \"not active\");\n\n    if (\n      (!entityNodeIsBYON[id] \u0026\u0026 recurringNaaSFeeInWei != 0) || (entityNodeIsBYON[id] \u0026\u0026 recurringFeeInWei != 0)\n    ) {\n      require(blockNumber \u003c blockLastPaidOn.add(recurringPaymentCycleInBlocks), \"pay fee\");\n    }\n\n    uint256 reward = getRewardByBlock(sender, nodeId, blockNumber);\n    require(reward \u003e 0, \"no reward\");\n\n    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n    require(msg.value \u003e= fee, \"invalid fee\");\n\n    feeCollector.transfer(msg.value);\n\n    if (toStrongPool) {\n      strongToken.approve(address(strongPool), reward);\n      strongPool.mineFor(sender, reward);\n    } else {\n      strongToken.transfer(sender, reward);\n    }\n\n    rewardBalance = rewardBalance.sub(reward);\n    entityNodeClaimedOnBlock[id] = blockNumber;\n    emit Claimed(sender, reward);\n  }\n\n  function getRewardAll(address entity, uint256 blockNumber) public view returns (uint256) {\n    uint256 rewardsAll = 0;\n\n    for (uint128 i = 1; i \u003c= entityNodeCount[entity]; i++) {\n      rewardsAll = rewardsAll.add(getRewardByBlock(entity, i, blockNumber \u003e 0 ? blockNumber : block.number));\n    }\n\n    return rewardsAll;\n  }\n\n  function doesNodeExist(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id] \u003e 0;\n  }\n\n  function getNodeId(address entity, uint128 nodeId) public view returns (bytes memory) {\n    uint128 id = nodeId != 0 ? nodeId : entityNodeCount[entity] + 1;\n    return abi.encodePacked(entity, id);\n  }\n\n  function getNodePaidOn(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id];\n  }\n\n  function getNodeFee(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n  }\n\n  function isNodeActive(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsActive[id] || !entityNodeIsBYON[id];\n  }\n\n  function isNodeBYON(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id];\n  }\n\n  function hasLegacyNode(address entity) public view returns (bool) {\n    return entityActive[entity] \u0026\u0026 entityNodeCount[entity] == 0;\n  }\n\n  function approveBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = true;\n    entityNodeClaimedOnBlock[id] = block.number;\n    activeEntities = activeEntities.add(1);\n  }\n\n  function suspendBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = false;\n    activeEntities = activeEntities.sub(1);\n  }\n\n  function setNodeIsActive(address entity, uint128 nodeId, bool isActive) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (isActive \u0026\u0026 !entityNodeIsActive[id]) {\n      activeEntities = activeEntities.add(1);\n      entityNodeClaimedOnBlock[id] = block.number;\n    }\n\n    if (!isActive \u0026\u0026 entityNodeIsActive[id]) {\n      activeEntities = activeEntities.sub(1);\n    }\n\n    entityNodeIsActive[id] = isActive;\n  }\n\n  function setNodeIsNaaS(address entity, uint128 nodeId, bool isNaaS) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    bytes memory id = getNodeId(entity, nodeId);\n\n    entityNodeIsBYON[id] = !isNaaS;\n  }\n\n  function migrateLegacyNode(address entity) private {\n    bytes memory id = getNodeId(entity, 1);\n    entityNodeClaimedOnBlock[id] = entityBlockLastClaimedOn[entity];\n    entityNodePaidOnBlock[id] = paidOnBlock[entity];\n    entityNodeTraunch[id] = traunch[entity];\n    entityNodeIsBYON[id] = !entityIsNaaS[entity];\n    if (entityNodeIsBYON[id]) {\n      entityNodeIsActive[id] = true;\n    }\n    entityNodeCount[msg.sender] = 1;\n  }\n\n  function migrateNode(uint128 nodeId, address to) public {\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    if (hasLegacyNode(to)) {\n      migrateLegacyNode(to);\n    }\n\n    require(doesNodeExist(msg.sender, nodeId), \"doesnt exist\");\n\n    uint128 toNodeId = entityNodeCount[to] + 1;\n    bytes memory fromId = getNodeId(msg.sender, nodeId);\n    bytes memory toId = getNodeId(to, toNodeId);\n\n    // move node to another address\n    entityNodeIsActive[toId] = entityNodeIsActive[fromId];\n    entityNodeIsBYON[toId] = entityNodeIsBYON[fromId];\n    entityNodePaidOnBlock[toId] = entityNodePaidOnBlock[fromId];\n    entityNodeClaimedOnBlock[toId] = entityNodeClaimedOnBlock[fromId];\n    entityNodeTraunch[toId] = entityNodeTraunch[fromId];\n    entityNodeCount[to] = entityNodeCount[to] + 1;\n\n    // deactivate node\n    entityNodeIsActive[fromId] = false;\n    entityNodePaidOnBlock[fromId] = 0;\n    entityNodeClaimedOnBlock[fromId] = 0;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] - 1;\n\n    emit Migrated(msg.sender, to, nodeId, toNodeId, entityNodeIsBYON[fromId]);\n  }\n\n  function claimAll(uint256 blockNumber, bool toStrongPool) public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      uint256 reward = getRewardByBlock(msg.sender, i, blockNumber);\n      uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n      this.claim{value : fee}(i, blockNumber, toStrongPool);\n    }\n  }\n\n  function payAll() public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      bytes memory id = getNodeId(msg.sender, i);\n      uint256 fee = entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n      this.payFee{value : fee}(i);\n    }\n  }\n\n  function addNFTBonusContract(address _contract) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    strongNFTBonus = StrongNFTBonusInterface(_contract);\n  }\n}\n"},"ServiceV11.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./StrongPoolInterface.sol\";\nimport \"./IERC1155Preset.sol\";\nimport \"./StrongNFTBonusInterface.sol\";\nimport \"./rewards.sol\";\n\ncontract ServiceV11 {\n  event Requested(address indexed miner);\n  event Claimed(address indexed miner, uint256 reward);\n\n  using SafeMath for uint256;\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public serviceAdmin;\n  address public parameterAdmin;\n  address payable public feeCollector;\n\n  IERC20 public strongToken;\n  StrongPoolInterface public strongPool;\n\n  uint256 public rewardPerBlockNumerator;\n  uint256 public rewardPerBlockDenominator;\n\n  uint256 public naasRewardPerBlockNumerator;\n  uint256 public naasRewardPerBlockDenominator;\n\n  uint256 public claimingFeeNumerator;\n  uint256 public claimingFeeDenominator;\n\n  uint256 public requestingFeeInWei;\n\n  uint256 public strongFeeInWei;\n\n  uint256 public recurringFeeInWei;\n  uint256 public recurringNaaSFeeInWei;\n  uint256 public recurringPaymentCycleInBlocks;\n\n  uint256 public rewardBalance;\n\n  mapping(address =\u003e uint256) public entityBlockLastClaimedOn;\n\n  address[] public entities;\n  mapping(address =\u003e uint256) public entityIndex;\n  mapping(address =\u003e bool) public entityActive;\n  mapping(address =\u003e bool) public requestPending;\n  mapping(address =\u003e bool) public entityIsNaaS;\n  mapping(address =\u003e uint256) public paidOnBlock;\n  uint256 public activeEntities;\n\n  string public desciption;\n\n  uint256 public claimingFeeInWei;\n\n  uint256 public naasRequestingFeeInWei;\n\n  uint256 public naasStrongFeeInWei;\n\n  bool public removedTokens;\n\n  mapping(address =\u003e uint256) public traunch;\n\n  uint256 public currentTraunch;\n\n  mapping(bytes =\u003e bool) public entityNodeIsActive;\n  mapping(bytes =\u003e bool) public entityNodeIsBYON;\n  mapping(bytes =\u003e uint256) public entityNodeTraunch;\n  mapping(bytes =\u003e uint256) public entityNodePaidOnBlock;\n  mapping(bytes =\u003e uint256) public entityNodeClaimedOnBlock;\n  mapping(address =\u003e uint128) public entityNodeCount;\n\n  event Paid(address indexed entity, uint128 nodeId, bool isBYON, bool isRenewal, uint256 upToBlockNumber);\n  event Migrated(address indexed from, address indexed to, uint128 fromNodeId, uint128 toNodeId, bool isBYON);\n\n  uint256 public rewardPerBlockNumeratorNew;\n  uint256 public rewardPerBlockDenominatorNew;\n  uint256 public naasRewardPerBlockNumeratorNew;\n  uint256 public naasRewardPerBlockDenominatorNew;\n  uint256 public rewardPerBlockNewEffectiveBlock;\n\n  StrongNFTBonusInterface public strongNFTBonus;\n\n  uint256 public gracePeriodInBlocks;\n\n  function init(\n    address strongTokenAddress,\n    address strongPoolAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 rewardPerBlockNumeratorValue,\n    uint256 rewardPerBlockDenominatorValue,\n    uint256 naasRewardPerBlockNumeratorValue,\n    uint256 naasRewardPerBlockDenominatorValue,\n    uint256 requestingFeeInWeiValue,\n    uint256 strongFeeInWeiValue,\n    uint256 recurringFeeInWeiValue,\n    uint256 recurringNaaSFeeInWeiValue,\n    uint256 recurringPaymentCycleInBlocksValue,\n    uint256 claimingFeeNumeratorValue,\n    uint256 claimingFeeDenominatorValue,\n    string memory desc\n  ) public {\n    require(!initDone, \"init done\");\n    strongToken = IERC20(strongTokenAddress);\n    strongPool = StrongPoolInterface(strongPoolAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;\n    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;\n    naasRewardPerBlockNumerator = naasRewardPerBlockNumeratorValue;\n    naasRewardPerBlockDenominator = naasRewardPerBlockDenominatorValue;\n    requestingFeeInWei = requestingFeeInWeiValue;\n    strongFeeInWei = strongFeeInWeiValue;\n    recurringFeeInWei = recurringFeeInWeiValue;\n    recurringNaaSFeeInWei = recurringNaaSFeeInWeiValue;\n    claimingFeeNumerator = claimingFeeNumeratorValue;\n    claimingFeeDenominator = claimingFeeDenominatorValue;\n    recurringPaymentCycleInBlocks = recurringPaymentCycleInBlocksValue;\n    desciption = desc;\n    initDone = true;\n  }\n\n  // ADMIN\n  // *************************************************************************************\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(msg.sender == superAdmin);\n    serviceAdmin = newServiceAdmin;\n  }\n\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function updateFeeCollector(address payable newFeeCollector) public {\n    require(newFeeCollector != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    feeCollector = newFeeCollector;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(msg.sender == admin, \"not admin\");\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \"not pendingAdmin\");\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(msg.sender == superAdmin, \"not superAdmin\");\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \"not pendingSuperAdmin\");\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  // ENTITIES\n  // *************************************************************************************\n\n  function isEntityActive(address entity) public view returns (bool) {\n    return entityActive[entity] || (doesNodeExist(entity, 1) \u0026\u0026 !hasNodeExpired(entity, 1));\n  }\n\n  // REWARD\n  // *************************************************************************************\n\n  function updateRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(denominator != 0, \"invalid value\");\n    rewardPerBlockNumerator = numerator;\n    rewardPerBlockDenominator = denominator;\n  }\n\n  function updateNaaSRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(denominator != 0, \"invalid value\");\n    naasRewardPerBlockNumerator = numerator;\n    naasRewardPerBlockDenominator = denominator;\n  }\n\n  function updateRewardPerBlockNew(\n    uint256 numerator,\n    uint256 denominator,\n    uint256 numeratorNass,\n    uint256 denominatorNass,\n    uint256 effectiveBlock\n  ) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n\n    rewardPerBlockNumeratorNew = numerator;\n    rewardPerBlockDenominatorNew = denominator;\n    naasRewardPerBlockNumeratorNew = numeratorNass;\n    naasRewardPerBlockDenominatorNew = denominatorNass;\n    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    require(amount \u003e 0, \"zero\");\n    require(rewardBalance \u003e= amount, \"not enough\");\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  // FEES\n  // *************************************************************************************\n\n  function updateRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    requestingFeeInWei = feeInWei;\n  }\n\n  function updateStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    strongFeeInWei = feeInWei;\n  }\n\n  function updateNaasRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    naasRequestingFeeInWei = feeInWei;\n  }\n\n  function updateNaasStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    naasStrongFeeInWei = feeInWei;\n  }\n\n  function updateClaimingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(denominator != 0, \"invalid value\");\n    claimingFeeNumerator = numerator;\n    claimingFeeDenominator = denominator;\n  }\n\n  function updateRecurringFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    recurringFeeInWei = feeInWei;\n  }\n\n  function updateRecurringNaaSFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    recurringNaaSFeeInWei = feeInWei;\n  }\n\n  function updateRecurringPaymentCycleInBlocks(uint256 blocks) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(blocks \u003e 0, \"zero\");\n    recurringPaymentCycleInBlocks = blocks;\n  }\n\n  function updateGracePeriodInBlocks(uint256 blocks) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n    require(blocks \u003e 0, \"zero\");\n    gracePeriodInBlocks = blocks;\n  }\n\n  // CORE\n  // *************************************************************************************\n\n  function requestAccess(bool isNaaS) public payable {\n    uint256 rFee;\n    uint256 sFee;\n\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    uint128 nodeId = entityNodeCount[msg.sender] + 1;\n    bytes memory id = getNodeId(msg.sender, nodeId);\n\n    if (isNaaS) {\n      rFee = naasRequestingFeeInWei;\n      sFee = naasStrongFeeInWei;\n      activeEntities = activeEntities.add(1);\n    } else {\n      rFee = requestingFeeInWei;\n      sFee = strongFeeInWei;\n      entityNodeIsBYON[id] = true;\n    }\n\n    require(msg.value == rFee, \"invalid fee\");\n\n    entityNodePaidOnBlock[id] = block.number;\n    entityNodeClaimedOnBlock[id] = block.number;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] + 1;\n\n    feeCollector.transfer(msg.value);\n    strongToken.transferFrom(msg.sender, address(this), sFee);\n    strongToken.transfer(feeCollector, sFee);\n\n    emit Paid(msg.sender, nodeId, entityNodeIsBYON[id], false, entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks));\n  }\n\n  function setEntityActiveStatus(address entity, bool status) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    uint256 index = entityIndex[entity];\n    require(entities[index] == entity, \"invalid entity\");\n    require(entityActive[entity] != status, \"already set\");\n    entityActive[entity] = status;\n    if (status) {\n      activeEntities = activeEntities.add(1);\n      entityBlockLastClaimedOn[entity] = block.number;\n    } else {\n      activeEntities = activeEntities.sub(1);\n      entityBlockLastClaimedOn[entity] = 0;\n    }\n  }\n\n  function payFee(uint128 nodeId) public payable {\n    address sender = msg.sender == address(this) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    bool isExpired = hasNodeExpired(msg.sender, nodeId);\n\n    require(doesNodeExist(sender, nodeId), \"doesnt exist\");\n    require(isExpired == false || msg.sender == address(this), \"too late\");\n\n    if (isExpired) {\n      return;\n    }\n\n    if (entityNodeIsBYON[id]) {\n      require(msg.value == recurringFeeInWei, \"invalid fee\");\n    } else {\n      require(msg.value == recurringNaaSFeeInWei, \"invalid fee\");\n    }\n\n    feeCollector.transfer(msg.value);\n    entityNodePaidOnBlock[id] = entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks);\n\n    emit Paid(sender, nodeId, entityNodeIsBYON[id], true, entityNodePaidOnBlock[id]);\n  }\n\n  function getReward(address entity, uint128 nodeId) public view returns (uint256) {\n    return getRewardByBlock(entity, nodeId, block.number);\n  }\n\n  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (hasLegacyNode(entity)) {\n      return getRewardByBlockLegacy(entity, blockNumber);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n\n    if (blockNumber \u003e block.number) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n    if (blockNumber \u003c blockLastClaimedOn) return 0;\n    if (activeEntities == 0) return 0;\n    if (entityNodeIsBYON[id] \u0026\u0026 !entityNodeIsActive[id]) return 0;\n\n    uint256 rewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumerator : naasRewardPerBlockNumerator;\n    uint256 rewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominator : naasRewardPerBlockDenominator;\n    uint256 newRewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumeratorNew : naasRewardPerBlockNumeratorNew;\n    uint256 newRewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominatorNew : naasRewardPerBlockDenominatorNew;\n\n    uint256 bonus = address(strongNFTBonus) != address(0)\n    ? strongNFTBonus.getBonus(entity, nodeId, blockLastClaimedOn, blockNumber)\n    : 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, blockNumber);\n    uint256 rewardOld = rewardDenominator \u003e 0 ? rewardBlocks[0].mul(rewardNumerator).div(rewardDenominator) : 0;\n    uint256 rewardNew = newRewardDenominator \u003e 0 ? rewardBlocks[1].mul(newRewardNumerator).div(newRewardDenominator) : 0;\n\n    return rewardOld.add(rewardNew).add(bonus);\n  }\n\n  function getRewardByBlockLegacy(address entity, uint256 blockNumber) public view returns (uint256) {\n    if (blockNumber \u003e block.number) return 0;\n    if (entityBlockLastClaimedOn[entity] == 0) return 0;\n    if (blockNumber \u003c entityBlockLastClaimedOn[entity]) return 0;\n    if (activeEntities == 0) return 0;\n    uint256 blockResult = blockNumber.sub(entityBlockLastClaimedOn[entity]);\n    uint256 rewardNumerator;\n    uint256 rewardDenominator;\n    if (entityIsNaaS[entity]) {\n      rewardNumerator = naasRewardPerBlockNumerator;\n      rewardDenominator = naasRewardPerBlockDenominator;\n    } else {\n      rewardNumerator = rewardPerBlockNumerator;\n      rewardDenominator = rewardPerBlockDenominator;\n    }\n    uint256 rewardPerBlockResult = blockResult.mul(rewardNumerator).div(rewardDenominator);\n\n    return rewardPerBlockResult;\n  }\n\n  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) public payable {\n    address sender = msg.sender == address(this) || msg.sender == address(strongNFTBonus) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n\n    require(blockLastClaimedOn != 0, \"never claimed\");\n    require(blockNumber \u003c= block.number, \"invalid block\");\n    require(blockNumber \u003e blockLastClaimedOn, \"too soon\");\n    require(!entityNodeIsBYON[id] || entityNodeIsActive[id], \"not active\");\n\n    if (\n      (!entityNodeIsBYON[id] \u0026\u0026 recurringNaaSFeeInWei != 0) || (entityNodeIsBYON[id] \u0026\u0026 recurringFeeInWei != 0)\n    ) {\n      require(blockNumber \u003c blockLastPaidOn.add(recurringPaymentCycleInBlocks), \"pay fee\");\n    }\n\n    uint256 reward = getRewardByBlock(sender, nodeId, blockNumber);\n    require(reward \u003e 0, \"no reward\");\n\n    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n    require(msg.value \u003e= fee, \"invalid fee\");\n\n    feeCollector.transfer(msg.value);\n\n    if (toStrongPool) {\n      strongToken.approve(address(strongPool), reward);\n      strongPool.mineFor(sender, reward);\n    } else {\n      strongToken.transfer(sender, reward);\n    }\n\n    rewardBalance = rewardBalance.sub(reward);\n    entityNodeClaimedOnBlock[id] = blockNumber;\n    emit Claimed(sender, reward);\n  }\n\n  function getRewardAll(address entity, uint256 blockNumber) public view returns (uint256) {\n    uint256 rewardsAll = 0;\n\n    for (uint128 i = 1; i \u003c= entityNodeCount[entity]; i++) {\n      rewardsAll = rewardsAll.add(getRewardByBlock(entity, i, blockNumber \u003e 0 ? blockNumber : block.number));\n    }\n\n    return rewardsAll;\n  }\n\n  function doesNodeExist(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id] \u003e 0;\n  }\n\n  function hasNodeExpired(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n    return block.number \u003e blockLastPaidOn.add(recurringPaymentCycleInBlocks).add(gracePeriodInBlocks);\n  }\n\n  function getNodeId(address entity, uint128 nodeId) public view returns (bytes memory) {\n    uint128 id = nodeId != 0 ? nodeId : entityNodeCount[entity] + 1;\n    return abi.encodePacked(entity, id);\n  }\n\n  function getNodePaidOn(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id];\n  }\n\n  function getNodeFee(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n  }\n\n  function isNodeActive(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsActive[id] || !entityNodeIsBYON[id];\n  }\n\n  function isNodeBYON(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id];\n  }\n\n  function hasLegacyNode(address entity) public view returns (bool) {\n    return entityActive[entity] \u0026\u0026 entityNodeCount[entity] == 0;\n  }\n\n  function approveBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = true;\n    entityNodeClaimedOnBlock[id] = block.number;\n    activeEntities = activeEntities.add(1);\n  }\n\n  function suspendBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = false;\n    activeEntities = activeEntities.sub(1);\n  }\n\n  function setNodeIsActive(address entity, uint128 nodeId, bool isActive) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (isActive \u0026\u0026 !entityNodeIsActive[id]) {\n      activeEntities = activeEntities.add(1);\n      entityNodeClaimedOnBlock[id] = block.number;\n    }\n\n    if (!isActive \u0026\u0026 entityNodeIsActive[id]) {\n      activeEntities = activeEntities.sub(1);\n    }\n\n    entityNodeIsActive[id] = isActive;\n  }\n\n  function setNodeIsNaaS(address entity, uint128 nodeId, bool isNaaS) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    bytes memory id = getNodeId(entity, nodeId);\n\n    entityNodeIsBYON[id] = !isNaaS;\n  }\n\n  function migrateLegacyNode(address entity) private {\n    bytes memory id = getNodeId(entity, 1);\n    entityNodeClaimedOnBlock[id] = entityBlockLastClaimedOn[entity];\n    entityNodePaidOnBlock[id] = paidOnBlock[entity];\n    entityNodeIsBYON[id] = !entityIsNaaS[entity];\n    if (entityNodeIsBYON[id]) {\n      entityNodeIsActive[id] = true;\n    }\n    entityNodeCount[msg.sender] = 1;\n  }\n\n  function migrateNode(uint128 nodeId, address to) public {\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    if (hasLegacyNode(to)) {\n      migrateLegacyNode(to);\n    }\n\n    require(doesNodeExist(msg.sender, nodeId), \"doesnt exist\");\n\n    uint128 toNodeId = entityNodeCount[to] + 1;\n    bytes memory fromId = getNodeId(msg.sender, nodeId);\n    bytes memory toId = getNodeId(to, toNodeId);\n\n    // move node to another address\n    entityNodeIsActive[toId] = entityNodeIsActive[fromId];\n    entityNodeIsBYON[toId] = entityNodeIsBYON[fromId];\n    entityNodePaidOnBlock[toId] = entityNodePaidOnBlock[fromId];\n    entityNodeClaimedOnBlock[toId] = entityNodeClaimedOnBlock[fromId];\n    entityNodeCount[to] = entityNodeCount[to] + 1;\n\n    // deactivate node\n    entityNodeIsActive[fromId] = false;\n    entityNodePaidOnBlock[fromId] = 0;\n    entityNodeClaimedOnBlock[fromId] = 0;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] - 1;\n\n    emit Migrated(msg.sender, to, nodeId, toNodeId, entityNodeIsBYON[fromId]);\n  }\n\n  function claimAll(uint256 blockNumber, bool toStrongPool) public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      uint256 reward = getRewardByBlock(msg.sender, i, blockNumber);\n      uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n      this.claim{value : fee}(i, blockNumber, toStrongPool);\n    }\n  }\n\n  function payAll() public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      bytes memory id = getNodeId(msg.sender, i);\n      uint256 fee = entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n      this.payFee{value : fee}(i);\n    }\n  }\n\n  function addNFTBonusContract(address _contract) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    strongNFTBonus = StrongNFTBonusInterface(_contract);\n  }\n}\n"},"ServiceV12.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./StrongPoolInterface.sol\";\nimport \"./IERC1155Preset.sol\";\nimport \"./StrongNFTBonusInterface.sol\";\nimport \"./rewards.sol\";\n\ncontract ServiceV12 {\n  event Requested(address indexed miner);\n  event Claimed(address indexed miner, uint256 reward);\n\n  using SafeMath for uint256;\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public serviceAdmin;\n  address public parameterAdmin;\n  address payable public feeCollector;\n\n  IERC20 public strongToken;\n  StrongPoolInterface public strongPool;\n\n  uint256 public rewardPerBlockNumerator;\n  uint256 public rewardPerBlockDenominator;\n\n  uint256 public naasRewardPerBlockNumerator;\n  uint256 public naasRewardPerBlockDenominator;\n\n  uint256 public claimingFeeNumerator;\n  uint256 public claimingFeeDenominator;\n\n  uint256 public requestingFeeInWei;\n\n  uint256 public strongFeeInWei;\n\n  uint256 public recurringFeeInWei;\n  uint256 public recurringNaaSFeeInWei;\n  uint256 public recurringPaymentCycleInBlocks;\n\n  uint256 public rewardBalance;\n\n  mapping(address =\u003e uint256) public entityBlockLastClaimedOn;\n\n  address[] public entities;\n  mapping(address =\u003e uint256) public entityIndex;\n  mapping(address =\u003e bool) public entityActive;\n  mapping(address =\u003e bool) public requestPending;\n  mapping(address =\u003e bool) public entityIsNaaS;\n  mapping(address =\u003e uint256) public paidOnBlock;\n  uint256 public activeEntities;\n\n  string public desciption;\n\n  uint256 public claimingFeeInWei;\n\n  uint256 public naasRequestingFeeInWei;\n\n  uint256 public naasStrongFeeInWei;\n\n  bool public removedTokens;\n\n  mapping(address =\u003e uint256) public traunch;\n\n  uint256 public currentTraunch;\n\n  mapping(bytes =\u003e bool) public entityNodeIsActive;\n  mapping(bytes =\u003e bool) public entityNodeIsBYON;\n  mapping(bytes =\u003e uint256) public entityNodeTraunch;\n  mapping(bytes =\u003e uint256) public entityNodePaidOnBlock;\n  mapping(bytes =\u003e uint256) public entityNodeClaimedOnBlock;\n  mapping(address =\u003e uint128) public entityNodeCount;\n\n  event Paid(address indexed entity, uint128 nodeId, bool isBYON, bool isRenewal, uint256 upToBlockNumber);\n  event Migrated(address indexed from, address indexed to, uint128 fromNodeId, uint128 toNodeId, bool isBYON);\n\n  uint256 public rewardPerBlockNumeratorNew;\n  uint256 public rewardPerBlockDenominatorNew;\n  uint256 public naasRewardPerBlockNumeratorNew;\n  uint256 public naasRewardPerBlockDenominatorNew;\n  uint256 public rewardPerBlockNewEffectiveBlock;\n\n  StrongNFTBonusInterface public strongNFTBonus;\n\n  uint256 public gracePeriodInBlocks;\n\n  function init(\n    address strongTokenAddress,\n    address strongPoolAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 rewardPerBlockNumeratorValue,\n    uint256 rewardPerBlockDenominatorValue,\n    uint256 naasRewardPerBlockNumeratorValue,\n    uint256 naasRewardPerBlockDenominatorValue,\n    uint256 requestingFeeInWeiValue,\n    uint256 strongFeeInWeiValue,\n    uint256 recurringFeeInWeiValue,\n    uint256 recurringNaaSFeeInWeiValue,\n    uint256 recurringPaymentCycleInBlocksValue,\n    uint256 claimingFeeNumeratorValue,\n    uint256 claimingFeeDenominatorValue,\n    string memory desc\n  ) public {\n    require(!initDone, \"init done\");\n    strongToken = IERC20(strongTokenAddress);\n    strongPool = StrongPoolInterface(strongPoolAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;\n    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;\n    naasRewardPerBlockNumerator = naasRewardPerBlockNumeratorValue;\n    naasRewardPerBlockDenominator = naasRewardPerBlockDenominatorValue;\n    requestingFeeInWei = requestingFeeInWeiValue;\n    strongFeeInWei = strongFeeInWeiValue;\n    recurringFeeInWei = recurringFeeInWeiValue;\n    recurringNaaSFeeInWei = recurringNaaSFeeInWeiValue;\n    claimingFeeNumerator = claimingFeeNumeratorValue;\n    claimingFeeDenominator = claimingFeeDenominatorValue;\n    recurringPaymentCycleInBlocks = recurringPaymentCycleInBlocksValue;\n    desciption = desc;\n    initDone = true;\n  }\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(msg.sender == superAdmin);\n    serviceAdmin = newServiceAdmin;\n  }\n\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0));\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function updateFeeCollector(address payable newFeeCollector) public {\n    require(newFeeCollector != address(0));\n    require(msg.sender == superAdmin);\n    feeCollector = newFeeCollector;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(msg.sender == admin);\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \"not pendingAdmin\");\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(msg.sender == superAdmin, \"not superAdmin\");\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \"not pendingSuperAdmin\");\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  function isEntityActive(address entity) public view returns (bool) {\n    return entityActive[entity] || (doesNodeExist(entity, 1) \u0026\u0026 !hasNodeExpired(entity, 1));\n  }\n\n  function updateRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    require(denominator != 0);\n    rewardPerBlockNumerator = numerator;\n    rewardPerBlockDenominator = denominator;\n  }\n\n  function updateNaaSRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    require(denominator != 0);\n    naasRewardPerBlockNumerator = numerator;\n    naasRewardPerBlockDenominator = denominator;\n  }\n\n  function updateRewardPerBlockNew(\n    uint256 numerator,\n    uint256 denominator,\n    uint256 numeratorNass,\n    uint256 denominatorNass,\n    uint256 effectiveBlock\n  ) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n\n    rewardPerBlockNumeratorNew = numerator;\n    rewardPerBlockDenominatorNew = denominator;\n    naasRewardPerBlockNumeratorNew = numeratorNass;\n    naasRewardPerBlockDenominatorNew = denominatorNass;\n    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin);\n    require(amount \u003e 0);\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin);\n    require(amount \u003e 0);\n    require(rewardBalance \u003e= amount, \"not enough\");\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  function updateRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    requestingFeeInWei = feeInWei;\n  }\n\n  function updateStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    strongFeeInWei = feeInWei;\n  }\n\n  function updateNaasRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    naasRequestingFeeInWei = feeInWei;\n  }\n\n  function updateNaasStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    naasStrongFeeInWei = feeInWei;\n  }\n\n  function updateClaimingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    require(denominator != 0);\n    claimingFeeNumerator = numerator;\n    claimingFeeDenominator = denominator;\n  }\n\n  function updateRecurringFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    recurringFeeInWei = feeInWei;\n  }\n\n  function updateRecurringNaaSFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    recurringNaaSFeeInWei = feeInWei;\n  }\n\n  function updateRecurringPaymentCycleInBlocks(uint256 blocks) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    require(blocks \u003e 0);\n    recurringPaymentCycleInBlocks = blocks;\n  }\n\n  function updateGracePeriodInBlocks(uint256 blocks) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin);\n    require(blocks \u003e 0);\n    gracePeriodInBlocks = blocks;\n  }\n\n  function requestAccess(bool isNaaS) public payable {\n    uint256 rFee;\n    uint256 sFee;\n\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    uint128 nodeId = entityNodeCount[msg.sender] + 1;\n    bytes memory id = getNodeId(msg.sender, nodeId);\n\n    if (isNaaS) {\n      rFee = naasRequestingFeeInWei;\n      sFee = naasStrongFeeInWei;\n      activeEntities = activeEntities.add(1);\n    } else {\n      rFee = requestingFeeInWei;\n      sFee = strongFeeInWei;\n      entityNodeIsBYON[id] = true;\n    }\n\n    require(msg.value == rFee, \"invalid fee\");\n\n    entityNodePaidOnBlock[id] = block.number;\n    entityNodeClaimedOnBlock[id] = block.number;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] + 1;\n\n    feeCollector.transfer(msg.value);\n    strongToken.transferFrom(msg.sender, address(this), sFee);\n    strongToken.transfer(feeCollector, sFee);\n\n    emit Paid(msg.sender, nodeId, entityNodeIsBYON[id], false, entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks));\n  }\n\n  function setEntityActiveStatus(address entity, bool status) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n    uint256 index = entityIndex[entity];\n    require(entities[index] == entity, \"invalid entity\");\n    require(entityActive[entity] != status, \"already set\");\n    entityActive[entity] = status;\n    if (status) {\n      activeEntities = activeEntities.add(1);\n      entityBlockLastClaimedOn[entity] = block.number;\n    } else {\n      activeEntities = activeEntities.sub(1);\n      entityBlockLastClaimedOn[entity] = 0;\n    }\n  }\n\n  function payFee(uint128 nodeId) public payable {\n    address sender = msg.sender == address(this) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    bool isExpired = hasNodeExpired(sender, nodeId);\n\n    require(doesNodeExist(sender, nodeId), \"doesnt exist\");\n    require(isExpired == false || msg.sender == address(this), \"too late\");\n\n    if (isExpired) {\n      return;\n    }\n\n    if (entityNodeIsBYON[id]) {\n      require(msg.value == recurringFeeInWei, \"invalid fee\");\n    } else {\n      require(msg.value == recurringNaaSFeeInWei, \"invalid fee\");\n    }\n\n    feeCollector.transfer(msg.value);\n    entityNodePaidOnBlock[id] = entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks);\n\n    emit Paid(sender, nodeId, entityNodeIsBYON[id], true, entityNodePaidOnBlock[id]);\n  }\n\n  function getReward(address entity, uint128 nodeId) public view returns (uint256) {\n    return getRewardByBlock(entity, nodeId, block.number);\n  }\n\n  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (hasLegacyNode(entity)) {\n      return getRewardByBlockLegacy(entity, blockNumber);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n\n    if (blockNumber \u003e block.number) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n    if (blockNumber \u003c blockLastClaimedOn) return 0;\n    if (activeEntities == 0) return 0;\n    if (entityNodeIsBYON[id] \u0026\u0026 !entityNodeIsActive[id]) return 0;\n\n    uint256 rewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumerator : naasRewardPerBlockNumerator;\n    uint256 rewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominator : naasRewardPerBlockDenominator;\n    uint256 newRewardNumerator = entityNodeIsBYON[id] ? rewardPerBlockNumeratorNew : naasRewardPerBlockNumeratorNew;\n    uint256 newRewardDenominator = entityNodeIsBYON[id] ? rewardPerBlockDenominatorNew : naasRewardPerBlockDenominatorNew;\n\n    uint256 bonus = address(strongNFTBonus) != address(0)\n    ? strongNFTBonus.getBonus(entity, nodeId, blockLastClaimedOn, blockNumber)\n    : 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, blockNumber);\n    uint256 rewardOld = rewardDenominator \u003e 0 ? rewardBlocks[0].mul(rewardNumerator).div(rewardDenominator) : 0;\n    uint256 rewardNew = newRewardDenominator \u003e 0 ? rewardBlocks[1].mul(newRewardNumerator).div(newRewardDenominator) : 0;\n\n    return rewardOld.add(rewardNew).add(bonus);\n  }\n\n  function getRewardByBlockLegacy(address entity, uint256 blockNumber) public view returns (uint256) {\n    if (blockNumber \u003e block.number) return 0;\n    if (entityBlockLastClaimedOn[entity] == 0) return 0;\n    if (blockNumber \u003c entityBlockLastClaimedOn[entity]) return 0;\n    if (activeEntities == 0) return 0;\n    uint256 blockResult = blockNumber.sub(entityBlockLastClaimedOn[entity]);\n    uint256 rewardNumerator;\n    uint256 rewardDenominator;\n    if (entityIsNaaS[entity]) {\n      rewardNumerator = naasRewardPerBlockNumerator;\n      rewardDenominator = naasRewardPerBlockDenominator;\n    } else {\n      rewardNumerator = rewardPerBlockNumerator;\n      rewardDenominator = rewardPerBlockDenominator;\n    }\n    uint256 rewardPerBlockResult = blockResult.mul(rewardNumerator).div(rewardDenominator);\n\n    return rewardPerBlockResult;\n  }\n\n  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) public payable {\n    address sender = msg.sender == address(this) || msg.sender == address(strongNFTBonus) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n\n    require(blockLastClaimedOn != 0, \"never claimed\");\n    require(blockNumber \u003c= block.number, \"invalid block\");\n    require(blockNumber \u003e blockLastClaimedOn, \"too soon\");\n    require(!entityNodeIsBYON[id] || entityNodeIsActive[id], \"not active\");\n\n    if (\n      (!entityNodeIsBYON[id] \u0026\u0026 recurringNaaSFeeInWei != 0) || (entityNodeIsBYON[id] \u0026\u0026 recurringFeeInWei != 0)\n    ) {\n      require(blockNumber \u003c blockLastPaidOn.add(recurringPaymentCycleInBlocks), \"pay fee\");\n    }\n\n    uint256 reward = getRewardByBlock(sender, nodeId, blockNumber);\n    require(reward \u003e 0, \"no reward\");\n\n    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n    require(msg.value \u003e= fee, \"invalid fee\");\n\n    feeCollector.transfer(msg.value);\n\n    if (toStrongPool) {\n      strongToken.approve(address(strongPool), reward);\n      strongPool.mineFor(sender, reward);\n    } else {\n      strongToken.transfer(sender, reward);\n    }\n\n    rewardBalance = rewardBalance.sub(reward);\n    entityNodeClaimedOnBlock[id] = blockNumber;\n    emit Claimed(sender, reward);\n  }\n\n  function getRewardAll(address entity, uint256 blockNumber) public view returns (uint256) {\n    uint256 rewardsAll = 0;\n\n    for (uint128 i = 1; i \u003c= entityNodeCount[entity]; i++) {\n      rewardsAll = rewardsAll.add(getRewardByBlock(entity, i, blockNumber \u003e 0 ? blockNumber : block.number));\n    }\n\n    return rewardsAll;\n  }\n\n  function doesNodeExist(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id] \u003e 0;\n  }\n\n  function hasNodeExpired(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n    return block.number \u003e blockLastPaidOn.add(recurringPaymentCycleInBlocks).add(gracePeriodInBlocks);\n  }\n\n  function getNodeId(address entity, uint128 nodeId) public view returns (bytes memory) {\n    uint128 id = nodeId != 0 ? nodeId : entityNodeCount[entity] + 1;\n    return abi.encodePacked(entity, id);\n  }\n\n  function getNodePaidOn(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id];\n  }\n\n  function getNodeFee(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n  }\n\n  function isNodeActive(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsActive[id] || !entityNodeIsBYON[id];\n  }\n\n  function isNodeBYON(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id];\n  }\n\n  function hasLegacyNode(address entity) public view returns (bool) {\n    return entityActive[entity] \u0026\u0026 entityNodeCount[entity] == 0;\n  }\n\n  function approveBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = true;\n    entityNodeClaimedOnBlock[id] = block.number;\n    activeEntities = activeEntities.add(1);\n  }\n\n  function suspendBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = false;\n    activeEntities = activeEntities.sub(1);\n  }\n\n  function setNodeIsActive(address entity, uint128 nodeId, bool isActive) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (isActive \u0026\u0026 !entityNodeIsActive[id]) {\n      activeEntities = activeEntities.add(1);\n      entityNodeClaimedOnBlock[id] = block.number;\n    }\n\n    if (!isActive \u0026\u0026 entityNodeIsActive[id]) {\n      activeEntities = activeEntities.sub(1);\n    }\n\n    entityNodeIsActive[id] = isActive;\n  }\n\n  function setNodeIsNaaS(address entity, uint128 nodeId, bool isNaaS) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n    bytes memory id = getNodeId(entity, nodeId);\n\n    entityNodeIsBYON[id] = !isNaaS;\n  }\n\n  function migrateLegacyNode(address entity) private {\n    bytes memory id = getNodeId(entity, 1);\n    entityNodeClaimedOnBlock[id] = entityBlockLastClaimedOn[entity];\n    entityNodePaidOnBlock[id] = paidOnBlock[entity];\n    entityNodeIsBYON[id] = !entityIsNaaS[entity];\n    if (entityNodeIsBYON[id]) {\n      entityNodeIsActive[id] = true;\n    }\n    entityNodeCount[msg.sender] = 1;\n  }\n\n  function migrateNode(uint128 nodeId, address to) public {\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    if (hasLegacyNode(to)) {\n      migrateLegacyNode(to);\n    }\n\n    require(doesNodeExist(msg.sender, nodeId), \"doesnt exist\");\n\n    uint128 toNodeId = entityNodeCount[to] + 1;\n    bytes memory fromId = getNodeId(msg.sender, nodeId);\n    bytes memory toId = getNodeId(to, toNodeId);\n\n    // move node to another address\n    entityNodeIsActive[toId] = entityNodeIsActive[fromId];\n    entityNodeIsBYON[toId] = entityNodeIsBYON[fromId];\n    entityNodePaidOnBlock[toId] = entityNodePaidOnBlock[fromId];\n    entityNodeClaimedOnBlock[toId] = entityNodeClaimedOnBlock[fromId];\n    entityNodeCount[to] = entityNodeCount[to] + 1;\n\n    // deactivate node\n    entityNodeIsActive[fromId] = false;\n    entityNodePaidOnBlock[fromId] = 0;\n    entityNodeClaimedOnBlock[fromId] = 0;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] - 1;\n\n    emit Migrated(msg.sender, to, nodeId, toNodeId, entityNodeIsBYON[fromId]);\n  }\n\n  function claimAll(uint256 blockNumber, bool toStrongPool) public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      uint256 reward = getRewardByBlock(msg.sender, i, blockNumber);\n      uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n      this.claim{value : fee}(i, blockNumber, toStrongPool);\n    }\n  }\n\n  function payAll() public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      bytes memory id = getNodeId(msg.sender, i);\n      uint256 fee = entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n      this.payFee{value : fee}(i);\n    }\n  }\n\n  function addNFTBonusContract(address _contract) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n\n    strongNFTBonus = StrongNFTBonusInterface(_contract);\n  }\n\n  function payFeeAdmin(address entity, uint128[] memory nodes) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin);\n\n    for (uint256 i = 0; i \u003c nodes.length; i++) {\n      uint128 nodeId = nodes[i];\n      bytes memory id = getNodeId(entity, nodeId);\n      entityNodePaidOnBlock[id] = entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks);\n\n      emit Paid(entity, nodeId, entityNodeIsBYON[id], true, entityNodePaidOnBlock[id]);\n    }\n  }\n\n}\n"},"ServiceV9.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./StrongPoolInterface.sol\";\n\ncontract ServiceV9 {\n  event Requested(address indexed miner);\n  event Claimed(address indexed miner, uint256 reward);\n\n  using SafeMath for uint256;\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public serviceAdmin;\n  address public parameterAdmin;\n  address payable public feeCollector;\n\n  IERC20 public strongToken;\n  StrongPoolInterface public strongPool;\n\n  uint256 public rewardPerBlockNumerator;\n  uint256 public rewardPerBlockDenominator;\n\n  uint256 public naasRewardPerBlockNumerator;\n  uint256 public naasRewardPerBlockDenominator;\n\n  uint256 public claimingFeeNumerator;\n  uint256 public claimingFeeDenominator;\n\n  uint256 public requestingFeeInWei;\n\n  uint256 public strongFeeInWei;\n\n  uint256 public recurringFeeInWei;\n  uint256 public recurringNaaSFeeInWei;\n  uint256 public recurringPaymentCycleInBlocks;\n\n  uint256 public rewardBalance;\n\n  mapping(address =\u003e uint256) public entityBlockLastClaimedOn;\n\n  address[] public entities;\n  mapping(address =\u003e uint256) public entityIndex;\n  mapping(address =\u003e bool) public entityActive;\n  mapping(address =\u003e bool) public requestPending;\n  mapping(address =\u003e bool) public entityIsNaaS;\n  mapping(address =\u003e uint256) public paidOnBlock;\n  uint256 public activeEntities;\n\n  string public desciption;\n\n  uint256 public claimingFeeInWei;\n\n  uint256 public naasRequestingFeeInWei;\n\n  uint256 public naasStrongFeeInWei;\n\n  bool public removedTokens;\n\n  mapping(address =\u003e uint256) public traunch;\n\n  uint256 public currentTraunch;\n\n  mapping(bytes =\u003e bool) public entityNodeIsActive;\n  mapping(bytes =\u003e bool) public entityNodeIsBYON;\n  mapping(bytes =\u003e uint256) public entityNodeTraunch;\n  mapping(bytes =\u003e uint256) public entityNodePaidOnBlock;\n  mapping(bytes =\u003e uint256) public entityNodeClaimedOnBlock;\n  mapping(address =\u003e uint128) public entityNodeCount;\n\n  event Paid(address indexed entity, uint128 nodeId, bool isBYON, bool isRenewal, uint256 upToBlockNumber);\n  event Migrated(address indexed from, address indexed to, uint128 fromNodeId, uint128 toNodeId, bool isBYON);\n\n  function init(\n    address strongTokenAddress,\n    address strongPoolAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 rewardPerBlockNumeratorValue,\n    uint256 rewardPerBlockDenominatorValue,\n    uint256 naasRewardPerBlockNumeratorValue,\n    uint256 naasRewardPerBlockDenominatorValue,\n    uint256 requestingFeeInWeiValue,\n    uint256 strongFeeInWeiValue,\n    uint256 recurringFeeInWeiValue,\n    uint256 recurringNaaSFeeInWeiValue,\n    uint256 recurringPaymentCycleInBlocksValue,\n    uint256 claimingFeeNumeratorValue,\n    uint256 claimingFeeDenominatorValue,\n    string memory desc\n  ) public {\n    require(!initDone, \u0027init done\u0027);\n    strongToken = IERC20(strongTokenAddress);\n    strongPool = StrongPoolInterface(strongPoolAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;\n    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;\n    naasRewardPerBlockNumerator = naasRewardPerBlockNumeratorValue;\n    naasRewardPerBlockDenominator = naasRewardPerBlockDenominatorValue;\n    requestingFeeInWei = requestingFeeInWeiValue;\n    strongFeeInWei = strongFeeInWeiValue;\n    recurringFeeInWei = recurringFeeInWeiValue;\n    recurringNaaSFeeInWei = recurringNaaSFeeInWeiValue;\n    claimingFeeNumerator = claimingFeeNumeratorValue;\n    claimingFeeDenominator = claimingFeeDenominatorValue;\n    recurringPaymentCycleInBlocks = recurringPaymentCycleInBlocksValue;\n    desciption = desc;\n    initDone = true;\n  }\n\n  // ADMIN\n  // *************************************************************************************\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(msg.sender == superAdmin);\n    serviceAdmin = newServiceAdmin;\n  }\n\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0), \u0027zero\u0027);\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function updateFeeCollector(address payable newFeeCollector) public {\n    require(newFeeCollector != address(0), \u0027zero\u0027);\n    require(msg.sender == superAdmin);\n    feeCollector = newFeeCollector;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(msg.sender == admin, \u0027not admin\u0027);\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \u0027not pendingAdmin\u0027);\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(msg.sender == superAdmin, \u0027not superAdmin\u0027);\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \u0027not pendingSuperAdmin\u0027);\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  // ENTITIES\n  // *************************************************************************************\n\n  function getEntities() public view returns (address[] memory) {\n    return entities;\n  }\n\n  function isEntityActive(address entity) public view returns (bool) {\n    return entityActive[entity];\n  }\n\n  // TRAUNCH\n  // *************************************************************************************\n\n  function updateCurrentTraunch(uint256 value) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    currentTraunch = value;\n  }\n\n  function getTraunch(address entity) public view returns (uint256) {\n    return traunch[entity];\n  }\n\n  // REWARD\n  // *************************************************************************************\n\n  function updateRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    require(denominator != 0, \u0027invalid value\u0027);\n    rewardPerBlockNumerator = numerator;\n    rewardPerBlockDenominator = denominator;\n  }\n\n  function updateNaaSRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    require(denominator != 0, \u0027invalid value\u0027);\n    naasRewardPerBlockNumerator = numerator;\n    naasRewardPerBlockDenominator = denominator;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin, \u0027not an admin\u0027);\n    require(amount \u003e 0, \u0027zero\u0027);\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin, \u0027not an admin\u0027);\n    require(amount \u003e 0, \u0027zero\u0027);\n    require(rewardBalance \u003e= amount, \u0027not enough\u0027);\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  function removeTokens() public {\n    require(!removedTokens, \u0027already removed\u0027);\n    require(msg.sender == superAdmin, \u0027not an admin\u0027);\n    // removing 2500 STRONG tokens sent in this tx: 0xe27640beda32a5e49aad3b6692790b9d380ed25da0cf8dca7fd5f3258efa600a\n    strongToken.transfer(superAdmin, 2500000000000000000000);\n    removedTokens = true;\n  }\n\n  // FEES\n  // *************************************************************************************\n\n  function updateRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    requestingFeeInWei = feeInWei;\n  }\n\n  function updateStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    strongFeeInWei = feeInWei;\n  }\n\n  function updateNaasRequestingFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    naasRequestingFeeInWei = feeInWei;\n  }\n\n  function updateNaasStrongFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    naasStrongFeeInWei = feeInWei;\n  }\n\n  function updateClaimingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    require(denominator != 0, \u0027invalid value\u0027);\n    claimingFeeNumerator = numerator;\n    claimingFeeDenominator = denominator;\n  }\n\n  function updateRecurringFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    recurringFeeInWei = feeInWei;\n  }\n\n  function updateRecurringNaaSFee(uint256 feeInWei) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    recurringNaaSFeeInWei = feeInWei;\n  }\n\n  function updateRecurringPaymentCycleInBlocks(uint256 blocks) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \u0027not an admin\u0027);\n    require(blocks \u003e 0, \u0027zero\u0027);\n    recurringPaymentCycleInBlocks = blocks;\n  }\n\n  // CORE\n  // *************************************************************************************\n\n  function requestAccess(bool isNaaS) public payable {\n    uint256 rFee;\n    uint256 sFee;\n\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    uint128 nodeId = entityNodeCount[msg.sender] + 1;\n    bytes memory id = getNodeId(msg.sender, nodeId);\n\n    if (isNaaS) {\n      rFee = naasRequestingFeeInWei;\n      sFee = naasStrongFeeInWei;\n      activeEntities = activeEntities.add(1);\n    } else {\n      rFee = requestingFeeInWei;\n      sFee = strongFeeInWei;\n      entityNodeIsBYON[id] = true;\n    }\n\n    require(msg.value == rFee, \u0027invalid fee\u0027);\n\n    entityNodePaidOnBlock[id] = block.number;\n    entityNodeTraunch[id] = currentTraunch;\n    entityNodeClaimedOnBlock[id] = block.number;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] + 1;\n\n    feeCollector.transfer(msg.value);\n    strongToken.transferFrom(msg.sender, address(this), sFee);\n    strongToken.transfer(feeCollector, sFee);\n\n    emit Paid(msg.sender, nodeId, entityNodeIsBYON[id], false, entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks));\n  }\n\n  function setEntityActiveStatus(address entity, bool status) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \u0027not admin\u0027);\n    uint256 index = entityIndex[entity];\n    require(entities[index] == entity, \u0027invalid entity\u0027);\n    require(entityActive[entity] != status, \u0027already set\u0027);\n    entityActive[entity] = status;\n    if (status) {\n      activeEntities = activeEntities.add(1);\n      entityBlockLastClaimedOn[entity] = block.number;\n    } else {\n      activeEntities = activeEntities.sub(1);\n      entityBlockLastClaimedOn[entity] = 0;\n    }\n  }\n\n  function setTraunch(address entity, uint256 value) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \u0027not admin\u0027);\n\n    traunch[entity] = value;\n  }\n\n  function payFee(uint128 nodeId) public payable {\n    address sender = msg.sender == address(this) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    require(doesNodeExist(sender, nodeId), \u0027doesnt exist\u0027);\n\n    if (entityNodeIsBYON[id]) {\n      require(msg.value == recurringFeeInWei, \u0027invalid fee\u0027);\n    } else {\n      require(msg.value == recurringNaaSFeeInWei, \u0027invalid fee\u0027);\n    }\n\n    feeCollector.transfer(msg.value);\n    entityNodePaidOnBlock[id] = entityNodePaidOnBlock[id].add(recurringPaymentCycleInBlocks);\n\n    emit Paid(sender, nodeId, entityNodeIsBYON[id], true, entityNodePaidOnBlock[id]);\n  }\n\n  function getReward(address entity, uint128 nodeId) public view returns (uint256) {\n    return getRewardByBlock(entity, nodeId, block.number);\n  }\n\n  function getRewardByBlock(address entity, uint128 nodeId, uint256 blockNumber) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (hasLegacyNode(entity)) {\n      return getRewardByBlockLegacy(entity, blockNumber);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n\n    if (blockNumber \u003e block.number) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n    if (blockNumber \u003c blockLastClaimedOn) return 0;\n    if (activeEntities == 0) return 0;\n    if (entityNodeIsBYON[id] \u0026\u0026 !entityNodeIsActive[id]) return 0;\n\n    uint256 blockResult = blockNumber.sub(blockLastClaimedOn);\n    uint256 rewardNumerator;\n    uint256 rewardDenominator;\n\n    if (entityNodeIsBYON[id]) {\n      rewardNumerator = rewardPerBlockNumerator;\n      rewardDenominator = rewardPerBlockDenominator;\n    } else {\n      rewardNumerator = naasRewardPerBlockNumerator;\n      rewardDenominator = naasRewardPerBlockDenominator;\n    }\n\n    uint256 rewardPerBlockResult = blockResult.mul(rewardNumerator).div(rewardDenominator);\n\n    return rewardPerBlockResult;\n  }\n\n  function getRewardByBlockLegacy(address entity, uint256 blockNumber) public view returns (uint256) {\n    if (blockNumber \u003e block.number) return 0;\n    if (entityBlockLastClaimedOn[entity] == 0) return 0;\n    if (blockNumber \u003c entityBlockLastClaimedOn[entity]) return 0;\n    if (activeEntities == 0) return 0;\n    uint256 blockResult = blockNumber.sub(entityBlockLastClaimedOn[entity]);\n    uint256 rewardNumerator;\n    uint256 rewardDenominator;\n    if (entityIsNaaS[entity]) {\n      rewardNumerator = naasRewardPerBlockNumerator;\n      rewardDenominator = naasRewardPerBlockDenominator;\n    } else {\n      rewardNumerator = rewardPerBlockNumerator;\n      rewardDenominator = rewardPerBlockDenominator;\n    }\n    uint256 rewardPerBlockResult = blockResult.mul(rewardNumerator).div(rewardDenominator);\n\n    return rewardPerBlockResult;\n  }\n\n  function claim(uint128 nodeId, uint256 blockNumber, bool toStrongPool) public payable {\n    address sender = msg.sender == address(this) ? tx.origin : msg.sender;\n    bytes memory id = getNodeId(sender, nodeId);\n\n    if (hasLegacyNode(sender)) {\n      migrateLegacyNode(sender);\n    }\n\n    uint256 blockLastClaimedOn = entityNodeClaimedOnBlock[id] != 0 ? entityNodeClaimedOnBlock[id] : entityNodePaidOnBlock[id];\n    uint256 blockLastPaidOn = entityNodePaidOnBlock[id];\n\n    require(blockLastClaimedOn != 0, \u0027never claimed\u0027);\n    require(blockNumber \u003c= block.number, \u0027invalid block\u0027);\n    require(blockNumber \u003e blockLastClaimedOn, \u0027too soon\u0027);\n    require(!entityNodeIsBYON[id] || entityNodeIsActive[id], \u0027not active\u0027);\n\n    if (\n      (!entityNodeIsBYON[id] \u0026\u0026 recurringNaaSFeeInWei != 0) || (entityNodeIsBYON[id] \u0026\u0026 recurringFeeInWei != 0)\n    ) {\n      require(blockNumber \u003c blockLastPaidOn.add(recurringPaymentCycleInBlocks), \u0027pay fee\u0027);\n    }\n\n    uint256 reward = getRewardByBlock(sender, nodeId, blockNumber);\n    require(reward \u003e 0, \u0027no reward\u0027);\n\n    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n    require(msg.value \u003e= fee, \u0027invalid fee\u0027);\n\n    feeCollector.transfer(msg.value);\n\n    if (toStrongPool) {\n      strongToken.approve(address(strongPool), reward);\n      strongPool.mineFor(sender, reward);\n    } else {\n      strongToken.transfer(sender, reward);\n    }\n\n    rewardBalance = rewardBalance.sub(reward);\n    entityNodeClaimedOnBlock[id] = blockNumber;\n    emit Claimed(sender, reward);\n  }\n\n  function getRewardAll(address entity, uint256 blockNumber) public view returns (uint256) {\n    uint256 rewardsAll = 0;\n\n    for (uint128 i = 1; i \u003c= entityNodeCount[entity]; i++) {\n      rewardsAll = rewardsAll.add(getRewardByBlock(entity, i, blockNumber \u003e 0 ? blockNumber : block.number));\n    }\n\n    return rewardsAll;\n  }\n\n  function doesNodeExist(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id] \u003e 0;\n  }\n\n  function getNodeId(address entity, uint128 nodeId) public view returns (bytes memory) {\n    uint128 id = nodeId != 0 ? nodeId : entityNodeCount[entity] + 1;\n    return abi.encodePacked(entity, id);\n  }\n\n  function getNodePaidOn(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodePaidOnBlock[id];\n  }\n\n  function getNodeFee(address entity, uint128 nodeId) public view returns (uint256) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n  }\n\n  function isNodeActive(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsActive[id] || !entityNodeIsBYON[id];\n  }\n\n  function isNodeBYON(address entity, uint128 nodeId) public view returns (bool) {\n    bytes memory id = getNodeId(entity, nodeId);\n    return entityNodeIsBYON[id];\n  }\n\n  function hasLegacyNode(address entity) public view returns (bool) {\n    return entityActive[entity] \u0026\u0026 entityNodeCount[entity] == 0;\n  }\n\n  function approveBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \u0027not admin\u0027);\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = true;\n    entityNodeClaimedOnBlock[id] = block.number;\n    activeEntities = activeEntities.add(1);\n  }\n\n  function suspendBYONNode(address entity, uint128 nodeId) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \u0027not admin\u0027);\n\n    bytes memory id = getNodeId(entity, nodeId);\n    entityNodeIsActive[id] = false;\n    activeEntities = activeEntities.sub(1);\n  }\n\n  function setNodeIsActive(address entity, uint128 nodeId, bool isActive) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \u0027not admin\u0027);\n    bytes memory id = getNodeId(entity, nodeId);\n\n    if (isActive \u0026\u0026 !entityNodeIsActive[id]) {\n      activeEntities = activeEntities.add(1);\n      entityNodeClaimedOnBlock[id] = block.number;\n    }\n\n    if (!isActive \u0026\u0026 entityNodeIsActive[id]) {\n      activeEntities = activeEntities.sub(1);\n    }\n\n    entityNodeIsActive[id] = isActive;\n  }\n\n  function setNodeIsNaaS(address entity, uint128 nodeId, bool isNaaS) public {\n    require(msg.sender == admin || msg.sender == serviceAdmin || msg.sender == superAdmin, \u0027not admin\u0027);\n    bytes memory id = getNodeId(entity, nodeId);\n\n    entityNodeIsBYON[id] = !isNaaS;\n  }\n\n  function migrateLegacyNode(address entity) private {\n    bytes memory id = getNodeId(entity, 1);\n    entityNodeClaimedOnBlock[id] = entityBlockLastClaimedOn[entity];\n    entityNodePaidOnBlock[id] = paidOnBlock[entity];\n    entityNodeTraunch[id] = traunch[entity];\n    entityNodeIsBYON[id] = !entityIsNaaS[entity];\n    if (entityNodeIsBYON[id]) {\n      entityNodeIsActive[id] = true;\n    }\n    entityNodeCount[msg.sender] = 1;\n  }\n\n  function migrateNode(uint128 nodeId, address to) public {\n    if (hasLegacyNode(msg.sender)) {\n      migrateLegacyNode(msg.sender);\n    }\n\n    if (hasLegacyNode(to)) {\n      migrateLegacyNode(to);\n    }\n\n    require(doesNodeExist(msg.sender, nodeId), \u0027doesnt exist\u0027);\n\n    uint128 toNodeId = entityNodeCount[to] + 1;\n    bytes memory fromId = getNodeId(msg.sender, nodeId);\n    bytes memory toId = getNodeId(to, toNodeId);\n\n    // move node to another address\n    entityNodeIsActive[toId] = entityNodeIsActive[fromId];\n    entityNodeIsBYON[toId] = entityNodeIsBYON[fromId];\n    entityNodePaidOnBlock[toId] = entityNodePaidOnBlock[fromId];\n    entityNodeClaimedOnBlock[toId] = entityNodeClaimedOnBlock[fromId];\n    entityNodeTraunch[toId] = entityNodeTraunch[fromId];\n    entityNodeCount[to] = entityNodeCount[to] + 1;\n\n    // deactivate node\n    entityNodeIsActive[fromId] = false;\n    entityNodePaidOnBlock[fromId] = 0;\n    entityNodeClaimedOnBlock[fromId] = 0;\n    entityNodeCount[msg.sender] = entityNodeCount[msg.sender] - 1;\n\n    emit Migrated(msg.sender, to, nodeId, toNodeId, entityNodeIsBYON[fromId]);\n  }\n\n  function claimAll(uint256 blockNumber, bool toStrongPool) public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      uint256 reward = getRewardByBlock(msg.sender, i, blockNumber);\n      uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n      this.claim{ value: fee }(i, blockNumber, toStrongPool);\n    }\n  }\n\n  function payAll() public payable {\n    for (uint16 i = 1; i \u003c= entityNodeCount[msg.sender]; i++) {\n      bytes memory id = getNodeId(msg.sender, i);\n      uint256 fee = entityNodeIsBYON[id] ? recurringFeeInWei : recurringNaaSFeeInWei;\n      this.payFee{ value: fee }(i);\n    }\n  }\n}\n"},"StrongNFTBonus.sol":{"content":"//SPDX-License-Identifier: Unlicense\npragma solidity ^0.6.8;\n\nimport \"./ServiceInterface.sol\";\nimport \"./IERC1155Preset.sol\";\nimport \"./SafeMath.sol\";\nimport \"./Context.sol\";\n\ncontract StrongNFTBonus is Context {\n\n  using SafeMath for uint256;\n\n  event Staked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);\n  event Unstaked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);\n\n  ServiceInterface public service;\n  IERC1155Preset public nft;\n\n  bool public initDone;\n\n  address public serviceAdmin;\n  address public superAdmin;\n\n  string[] public nftBonusNames;\n  mapping(string =\u003e uint256) public nftBonusLowerBound;\n  mapping(string =\u003e uint256) public nftBonusUpperBound;\n  mapping(string =\u003e uint256) public nftBonusValue;\n\n  mapping(uint256 =\u003e uint256) public nftIdStakedForNodeId;\n  mapping(address =\u003e mapping(uint128 =\u003e uint256)) public entityNodeStakedNftId;\n  mapping(address =\u003e mapping(uint128 =\u003e uint256)) public entityNodeStakedNftBlock;\n\n  function init(address serviceContract, address nftContract, address serviceAdminAddress, address superAdminAddress) public {\n    require(initDone == false, \"init done\");\n\n    serviceAdmin = serviceAdminAddress;\n    superAdmin = superAdminAddress;\n    service = ServiceInterface(serviceContract);\n    nft = IERC1155Preset(nftContract);\n    initDone = true;\n  }\n\n  function isNftStaked(uint256 _tokenId) public view returns (bool) {\n    return nftIdStakedForNodeId[_tokenId] != 0;\n  }\n\n  function getNftStakedForNodeId(uint256 _tokenId) public view returns (uint256) {\n    return nftIdStakedForNodeId[_tokenId];\n  }\n\n  function getStakedNftId(address _entity, uint128 _nodeId) public view returns (uint256) {\n    return entityNodeStakedNftId[_entity][_nodeId];\n  }\n\n  function getStakedNftBlock(address _entity, uint128 _nodeId) public view returns (uint256) {\n    return entityNodeStakedNftBlock[_entity][_nodeId];\n  }\n\n  function getBonus(address _entity, uint128 _nodeId, uint256 _fromBlock, uint256 _toBlock) public view returns (uint256) {\n    uint256 nftId = entityNodeStakedNftId[_entity][_nodeId];\n\n    if (nftId == 0) return 0;\n    if (nftId \u003c nftBonusLowerBound[\"BRONZE\"]) return 0;\n    if (nftId \u003e nftBonusUpperBound[\"BRONZE\"]) return 0;\n    if (nft.balanceOf(_entity, nftId) == 0) return 0;\n    if (_fromBlock \u003e= _toBlock) return 0;\n\n    uint256 stakedAtBlock = entityNodeStakedNftBlock[_entity][_nodeId];\n\n    if (stakedAtBlock == 0) return 0;\n\n    uint256 startFromBlock = stakedAtBlock \u003e _fromBlock ? stakedAtBlock : _fromBlock;\n\n    if (startFromBlock \u003e= _toBlock) return 0;\n\n    return _toBlock.sub(startFromBlock).mul(nftBonusValue[\"BRONZE\"]);\n  }\n\n  function stakeNFT(uint256 _tokenId, uint128 _nodeId) public payable {\n    require(nft.balanceOf(_msgSender(), _tokenId) != 0, \"not enough\");\n    require(_tokenId \u003e= nftBonusLowerBound[\"BRONZE\"] \u0026\u0026 _tokenId \u003c= nftBonusUpperBound[\"BRONZE\"], \"not eligible\");\n    require(nftIdStakedForNodeId[_tokenId] == 0, \"already staked\");\n    require(service.doesNodeExist(_msgSender(), _nodeId), \"node doesnt exist\");\n\n    nftIdStakedForNodeId[_tokenId] = _nodeId;\n    entityNodeStakedNftId[_msgSender()][_nodeId] = _tokenId;\n    entityNodeStakedNftBlock[_msgSender()][_nodeId] = block.number;\n\n    emit Staked(msg.sender, _tokenId, _nodeId, block.number);\n  }\n\n  function unStakeNFT(uint256 _tokenId, uint128 _nodeId, uint256 _blockNumber) public payable {\n    require(nft.balanceOf(_msgSender(), _tokenId) != 0, \"not enough\");\n    require(nftIdStakedForNodeId[_tokenId] == _nodeId, \"not this node\");\n\n    service.claim{value : msg.value}(_nodeId, _blockNumber, false);\n\n    nftIdStakedForNodeId[_tokenId] = 0;\n    entityNodeStakedNftId[_msgSender()][_nodeId] = 0;\n    entityNodeStakedNftBlock[_msgSender()][_nodeId] = 0;\n\n    emit Unstaked(msg.sender, _tokenId, _nodeId, _blockNumber);\n  }\n\n  function updateBonus(string memory _name, uint256 _lowerBound, uint256 _upperBound, uint256 _value) public {\n    require(msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    bool alreadyExit = false;\n    for (uint i = 0; i \u003c nftBonusNames.length; i++) {\n      if (keccak256(abi.encode(nftBonusNames[i])) == keccak256(abi.encode(_name))) {\n        alreadyExit = true;\n      }\n    }\n\n    if (!alreadyExit) {\n      nftBonusNames.push(_name);\n    }\n\n    nftBonusLowerBound[_name] = _lowerBound;\n    nftBonusUpperBound[_name] = _upperBound;\n    nftBonusValue[_name] = _value;\n  }\n\n  function updateContracts(address serviceContract, address nftContract) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    service = ServiceInterface(serviceContract);\n    nft = IERC1155Preset(nftContract);\n  }\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    serviceAdmin = newServiceAdmin;\n  }\n}\n"},"StrongNFTBonusDeprecated.sol":{"content":"//SPDX-License-Identifier: Unlicense\npragma solidity ^0.6.8;\n\nimport \"./ServiceInterface.sol\";\nimport \"./IERC1155Preset.sol\";\nimport \"./SafeMath.sol\";\nimport \"./Context.sol\";\n\ncontract StrongNFTBonusDeprecated is Context {\n\n  using SafeMath for uint256;\n\n  event Staked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);\n  event Unstaked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);\n\n  ServiceInterface public service;\n  IERC1155Preset public nft;\n\n  bool public initDone;\n\n  address public serviceAdmin;\n  address public superAdmin;\n\n  string[] public nftBonusNames;\n  mapping(string =\u003e uint256) public nftBonusLowerBound;\n  mapping(string =\u003e uint256) public nftBonusUpperBound;\n  mapping(string =\u003e uint256) public nftBonusValue;\n\n  mapping(uint256 =\u003e uint256) public nftIdStakedForNodeId;\n  mapping(address =\u003e mapping(uint128 =\u003e uint256)) public entityNodeStakedNftId;\n  mapping(address =\u003e mapping(uint128 =\u003e uint256)) public entityNodeStakedNftBlock;\n\n  bool public disabled;\n\n  function init(address serviceContract, address nftContract, address serviceAdminAddress, address superAdminAddress) public {\n    require(initDone == false, \"init done\");\n\n    serviceAdmin = serviceAdminAddress;\n    superAdmin = superAdminAddress;\n    service = ServiceInterface(serviceContract);\n    nft = IERC1155Preset(nftContract);\n    initDone = true;\n  }\n\n  function isNftStaked(uint256 _tokenId) public view returns (bool) {\n    return nftIdStakedForNodeId[_tokenId] != 0;\n  }\n\n  function getNftStakedForNodeId(uint256 _tokenId) public view returns (uint256) {\n    return nftIdStakedForNodeId[_tokenId];\n  }\n\n  function getStakedNftId(address _entity, uint128 _nodeId) public view returns (uint256) {\n    return entityNodeStakedNftId[_entity][_nodeId];\n  }\n\n  function getStakedNftBlock(address _entity, uint128 _nodeId) public view returns (uint256) {\n    return entityNodeStakedNftBlock[_entity][_nodeId];\n  }\n\n  function getBonus(address _entity, uint128 _nodeId, uint256 _fromBlock, uint256 _toBlock) public view returns (uint256) {\n    uint256 nftId = entityNodeStakedNftId[_entity][_nodeId];\n\n    if (nftId == 0) return 0;\n    if (nftIdStakedForNodeId[nftId] == 0) return 0;\n    if (nftId \u003c nftBonusLowerBound[\"BRONZE\"]) return 0;\n    if (nftId \u003e nftBonusUpperBound[\"BRONZE\"]) return 0;\n    if (nft.balanceOf(_entity, nftId) == 0) return 0;\n    if (_fromBlock \u003e= _toBlock) return 0;\n\n    uint256 stakedAtBlock = entityNodeStakedNftBlock[_entity][_nodeId];\n\n    if (stakedAtBlock == 0) return 0;\n\n    uint256 startFromBlock = stakedAtBlock \u003e _fromBlock ? stakedAtBlock : _fromBlock;\n\n    if (startFromBlock \u003e= _toBlock) return 0;\n\n    return _toBlock.sub(startFromBlock).mul(nftBonusValue[\"BRONZE\"]);\n  }\n\n  function stakeNFT(uint256 _tokenId, uint128 _nodeId) public payable {\n    require(disabled == false, \"disabled\");\n    require(nft.balanceOf(_msgSender(), _tokenId) != 0, \"not enough\");\n    require(_tokenId \u003e= nftBonusLowerBound[\"BRONZE\"] \u0026\u0026 _tokenId \u003c= nftBonusUpperBound[\"BRONZE\"], \"not eligible\");\n    require(nftIdStakedForNodeId[_tokenId] == 0, \"already staked\");\n    require(service.doesNodeExist(_msgSender(), _nodeId), \"node doesnt exist\");\n\n    nftIdStakedForNodeId[_tokenId] = _nodeId;\n    entityNodeStakedNftId[_msgSender()][_nodeId] = _tokenId;\n    entityNodeStakedNftBlock[_msgSender()][_nodeId] = block.number;\n\n    emit Staked(msg.sender, _tokenId, _nodeId, block.number);\n  }\n\n  function unStakeNFT(uint256 _tokenId, uint256 _blockNumber) public {\n    uint128 nodeId = uint128(nftIdStakedForNodeId[_tokenId]);\n\n    require(entityNodeStakedNftId[_msgSender()][nodeId] != 0, \"not staked\");\n\n    nftIdStakedForNodeId[_tokenId] = 0;\n    entityNodeStakedNftId[_msgSender()][nodeId] = 0;\n    entityNodeStakedNftBlock[_msgSender()][nodeId] = 0;\n\n    emit Unstaked(msg.sender, _tokenId, nodeId, _blockNumber);\n  }\n\n  function unStakeNFTAdmin(address _entity, uint256 _tokenId, uint256 _blockNumber) public {\n    require(msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    uint128 nodeId = uint128(nftIdStakedForNodeId[_tokenId]);\n\n    nftIdStakedForNodeId[_tokenId] = 0;\n    entityNodeStakedNftId[_entity][nodeId] = 0;\n\n    emit Unstaked(_entity, _tokenId, nodeId, _blockNumber);\n  }\n\n  function updateBonus(string memory _name, uint256 _lowerBound, uint256 _upperBound, uint256 _value) public {\n    require(msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n\n    bool alreadyExit = false;\n    for (uint i = 0; i \u003c nftBonusNames.length; i++) {\n      if (keccak256(abi.encode(nftBonusNames[i])) == keccak256(abi.encode(_name))) {\n        alreadyExit = true;\n      }\n    }\n\n    if (!alreadyExit) {\n      nftBonusNames.push(_name);\n    }\n\n    nftBonusLowerBound[_name] = _lowerBound;\n    nftBonusUpperBound[_name] = _upperBound;\n    nftBonusValue[_name] = _value;\n  }\n\n  function updateContracts(address serviceContract, address nftContract) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    service = ServiceInterface(serviceContract);\n    nft = IERC1155Preset(nftContract);\n  }\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(msg.sender == superAdmin, \"not admin\");\n    serviceAdmin = newServiceAdmin;\n  }\n\n  function updateDisabled(bool _disabled) public {\n    require(msg.sender == serviceAdmin || msg.sender == superAdmin, \"not admin\");\n    disabled = _disabled;\n  }\n}\n"},"StrongNFTBonusInterface.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\ninterface StrongNFTBonusInterface {\n  function getBonus(address _entity, uint128 _nodeId, uint256 _fromBlock, uint256 _toBlock) external view returns (uint256);\n}\n"},"StrongNFTBonusLegacyInterface.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.6.12;\n\ninterface StrongNFTBonusLegacyInterface {\n  function getBonus(address _entity, uint128 _nodeId, uint256 _fromBlock, uint256 _toBlock) external view returns (uint256);\n\n  function getStakedNftId(address _entity, uint128 _nodeId) external view returns (uint256);\n\n  function isNftStaked(uint256 _nftId) external view returns (bool);\n}\n"},"StrongNFTBonusV2.sol":{"content":"//SPDX-License-Identifier: Unlicense\npragma solidity 0.6.12;\n\nimport \"./ServiceInterface.sol\";\nimport \"./IERC1155Preset.sol\";\nimport \"./StrongNFTBonusLegacyInterface.sol\";\nimport \"./SafeMath.sol\";\nimport \"./Context.sol\";\nimport \"./ERC1155Receiver.sol\";\n\ncontract StrongNFTBonusV2 is Context {\n\n  using SafeMath for uint256;\n\n  event Staked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);\n  event Unstaked(address indexed sender, uint256 tokenId, uint128 nodeId, uint256 block);\n\n  ServiceInterface public CService;\n  IERC1155Preset public CERC1155;\n  StrongNFTBonusLegacyInterface public CStrongNFTBonus;\n\n  bool public initDone;\n\n  address public serviceAdmin;\n  address public superAdmin;\n\n  string[] public nftBonusNames;\n  mapping(string =\u003e uint256) public nftBonusLowerBound;\n  mapping(string =\u003e uint256) public nftBonusUpperBound;\n  mapping(string =\u003e uint256) public nftBonusValue;\n  mapping(string =\u003e uint256) public nftBonusEffectiveBlock;\n\n  mapping(uint256 =\u003e address) public nftIdStakedToEntity;\n  mapping(uint256 =\u003e uint128) public nftIdStakedToNodeId;\n  mapping(uint256 =\u003e uint256) public nftIdStakedAtBlock;\n  mapping(address =\u003e mapping(uint128 =\u003e uint256)) public entityNodeStakedNftId;\n\n  mapping(bytes4 =\u003e bool) private _supportedInterfaces;\n\n  function init(address serviceContract, address nftContract, address strongNFTBonusContract, address serviceAdminAddress, address superAdminAddress) public {\n    require(initDone == false, \"init done\");\n\n    _registerInterface(0x01ffc9a7);\n    _registerInterface(\n      ERC1155Receiver(0).onERC1155Received.selector ^\n      ERC1155Receiver(0).onERC1155BatchReceived.selector\n    );\n\n    serviceAdmin = serviceAdminAddress;\n    superAdmin = superAdminAddress;\n    CService = ServiceInterface(serviceContract);\n    CERC1155 = IERC1155Preset(nftContract);\n    CStrongNFTBonus = StrongNFTBonusLegacyInterface(strongNFTBonusContract);\n    initDone = true;\n  }\n\n  //\n  // Getters\n  // -------------------------------------------------------------------------------------------------------------------\n\n  function isNftStaked(uint256 _nftId) public view returns (bool) {\n    return nftIdStakedToNodeId[_nftId] != 0;\n  }\n\n  function isNftStakedLegacy(uint256 _nftId) public view returns (bool) {\n    return CStrongNFTBonus.isNftStaked(_nftId);\n  }\n\n  function getStakedNftId(address _entity, uint128 _nodeId) public view returns (uint256) {\n    uint256 stakedNftId = entityNodeStakedNftId[_entity][_nodeId];\n    uint256 stakedNftIdLegacy = CStrongNFTBonus.getStakedNftId(_entity, _nodeId);\n    return stakedNftId != 0 ? stakedNftId : stakedNftIdLegacy;\n  }\n\n  function getBonus(address _entity, uint128 _nodeId, uint256 _fromBlock, uint256 _toBlock) public view returns (uint256) {\n    string memory bonusName = \"BRONZE\";\n    uint256 nftId = getStakedNftId(_entity, _nodeId);\n    uint256 stakedAtBlock = nftIdStakedAtBlock[nftId];\n    uint256 effectiveBlock = nftBonusEffectiveBlock[bonusName];\n    uint256 startFromBlock = stakedAtBlock \u003e _fromBlock ? stakedAtBlock : _fromBlock;\n    if (startFromBlock \u003c effectiveBlock) {\n      startFromBlock = effectiveBlock;\n    }\n\n    if (stakedAtBlock == 0 \u0026\u0026 keccak256(abi.encode(bonusName)) == keccak256(abi.encode(\"BRONZE\"))) {\n      return CStrongNFTBonus.getBonus(_entity, _nodeId, startFromBlock, _toBlock);\n    }\n\n    if (nftId == 0) return 0;\n    if (stakedAtBlock == 0) return 0;\n    if (effectiveBlock == 0) return 0;\n    if (startFromBlock \u003e= _toBlock) return 0;\n    if (nftId \u003c nftBonusLowerBound[bonusName]) return 0;\n    if (nftId \u003e nftBonusUpperBound[bonusName]) return 0;\n    if (CERC1155.balanceOf(address(this), nftId) == 0) return 0;\n\n    return _toBlock.sub(startFromBlock).mul(nftBonusValue[bonusName]);\n  }\n\n  //\n  // Staking\n  // -------------------------------------------------------------------------------------------------------------------\n\n  function stakeNFT(uint256 _nftId, uint128 _nodeId) public payable {\n    require(CERC1155.balanceOf(_msgSender(), _nftId) != 0, \"not enough\");\n    require(entityNodeStakedNftId[_msgSender()][_nodeId] == 0, \"already staked\");\n    require(_nftId \u003e= nftBonusLowerBound[\"BRONZE\"] \u0026\u0026 _nftId \u003c= nftBonusUpperBound[\"BRONZE\"], \"not eligible\");\n    require(CService.doesNodeExist(_msgSender(), _nodeId), \"node doesnt exist\");\n\n    entityNodeStakedNftId[_msgSender()][_nodeId] = _nftId;\n    nftIdStakedToEntity[_nftId] = _msgSender();\n    nftIdStakedToNodeId[_nftId] = _nodeId;\n    nftIdStakedAtBlock[_nftId] = block.number;\n\n    CERC1155.safeTransferFrom(_msgSender(), address(this), _nftId, 1, bytes(\"\"));\n\n    emit Staked(_msgSender(), _nftId, _nodeId, block.number);\n  }\n\n  function unStakeNFT(uint256 _nftId, uint256 _blockNumber) public payable {\n    require(nftIdStakedToEntity[_nftId] != address(0), \"not staked\");\n    require(nftIdStakedToEntity[_nftId] == _msgSender(), \"not staker\");\n\n    uint128 nodeId = nftIdStakedToNodeId[_nftId];\n\n    CService.claim{value : msg.value}(nodeId, _blockNumber, false);\n\n    entityNodeStakedNftId[_msgSender()][nodeId] = 0;\n    nftIdStakedToEntity[_nftId] = address(0);\n    nftIdStakedToNodeId[_nftId] = 0;\n\n    CERC1155.safeTransferFrom(address(this), _msgSender(), _nftId, 1, bytes(\"\"));\n\n    emit Unstaked(_msgSender(), _nftId, nodeId, _blockNumber);\n  }\n\n  //\n  // Admin\n  // -------------------------------------------------------------------------------------------------------------------\n\n  function updateBonus(string memory _name, uint256 _lowerBound, uint256 _upperBound, uint256 _value, uint256 _block) public {\n    require(_msgSender() == serviceAdmin || _msgSender() == superAdmin, \"not admin\");\n\n    bool alreadyExist = false;\n    for (uint i = 0; i \u003c nftBonusNames.length; i++) {\n      if (keccak256(abi.encode(nftBonusNames[i])) == keccak256(abi.encode(_name))) {\n        alreadyExist = true;\n      }\n    }\n\n    if (!alreadyExist) {\n      nftBonusNames.push(_name);\n    }\n\n    nftBonusLowerBound[_name] = _lowerBound;\n    nftBonusUpperBound[_name] = _upperBound;\n    nftBonusValue[_name] = _value;\n    nftBonusEffectiveBlock[_name] = _block != 0 ? _block : block.number;\n  }\n\n  function updateContracts(address serviceContract, address nftContract) public {\n    require(_msgSender() == superAdmin, \"not admin\");\n    CService = ServiceInterface(serviceContract);\n    CERC1155 = IERC1155Preset(nftContract);\n  }\n\n  function updateServiceAdmin(address newServiceAdmin) public {\n    require(_msgSender() == superAdmin, \"not admin\");\n    serviceAdmin = newServiceAdmin;\n  }\n\n  //\n  // ERC1155 support\n  // -------------------------------------------------------------------------------------------------------------------\n\n  function onERC1155Received(address, address, uint256, uint256, bytes memory) public virtual returns (bytes4) {\n    return this.onERC1155Received.selector;\n  }\n\n  function onERC1155BatchReceived(address, address, uint256[] memory, uint256[] memory, bytes memory) public virtual returns (bytes4) {\n    return this.onERC1155BatchReceived.selector;\n  }\n\n  function supportsInterface(bytes4 interfaceId) public view returns (bool) {\n    return _supportedInterfaces[interfaceId];\n  }\n\n  function _registerInterface(bytes4 interfaceId) internal virtual {\n    require(interfaceId != 0xffffffff, \"ERC165: invalid interface id\");\n    _supportedInterfaces[interfaceId] = true;\n  }\n}\n"},"StrongNFTClaimerInterface.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\ninterface StrongNFTClaimerInterface {\n  function tokenNameAddressClaimed(string memory, address) external view returns(bool);\n}\n"},"StrongPoolInterface.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\ninterface StrongPoolInterface {\n  function mineFor(address miner, uint256 amount) external;\n}\n"},"StrongPoolV4.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./VoteInterface.sol\";\nimport \"./rewards.sol\";\n\ncontract StrongPoolV4 {\n  event MinedFor(address indexed miner, uint256 amount);\n  event Mined(address indexed miner, uint256 amount);\n  event MinedForVotesOnly(address indexed miner, uint256 amount);\n  event UnminedForVotesOnly(address indexed miner, uint256 amount);\n  event Unmined(address indexed miner, uint256 amount);\n  event Claimed(address indexed miner, uint256 reward);\n\n  using SafeMath for uint256;\n\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public parameterAdmin;\n  address payable public feeCollector;\n\n  IERC20 public strongToken;\n  VoteInterface public vote;\n\n  mapping(address =\u003e uint256) public minerBalance;\n  uint256 public totalBalance;\n  mapping(address =\u003e uint256) public minerBlockLastClaimedOn;\n\n  mapping(address =\u003e uint256) public minerVotes;\n\n  uint256 public rewardBalance;\n\n  uint256 public rewardPerBlockNumerator;\n  uint256 public rewardPerBlockDenominator;\n\n  uint256 public miningFeeNumerator;\n  uint256 public miningFeeDenominator;\n\n  uint256 public unminingFeeNumerator;\n  uint256 public unminingFeeDenominator;\n\n  uint256 public claimingFeeNumerator;\n  uint256 public claimingFeeDenominator;\n\n  mapping(address =\u003e uint256) public inboundContractIndex;\n  address[] public inboundContracts;\n  mapping(address =\u003e bool) public inboundContractTrusted;\n\n  uint256 public claimingFeeInWei;\n\n  bool public removedTokens;\n\n  uint256 public rewardPerBlockNumeratorNew;\n  uint256 public rewardPerBlockDenominatorNew;\n  uint256 public rewardPerBlockNewEffectiveBlock;\n\n  function init(\n    address voteAddress,\n    address strongTokenAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 rewardPerBlockNumeratorValue,\n    uint256 rewardPerBlockDenominatorValue,\n    uint256 miningFeeNumeratorValue,\n    uint256 miningFeeDenominatorValue,\n    uint256 unminingFeeNumeratorValue,\n    uint256 unminingFeeDenominatorValue,\n    uint256 claimingFeeNumeratorValue,\n    uint256 claimingFeeDenominatorValue\n  ) public {\n    require(!initDone, \"init done\");\n    vote = VoteInterface(voteAddress);\n    strongToken = IERC20(strongTokenAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    rewardPerBlockNumerator = rewardPerBlockNumeratorValue;\n    rewardPerBlockDenominator = rewardPerBlockDenominatorValue;\n    miningFeeNumerator = miningFeeNumeratorValue;\n    miningFeeDenominator = miningFeeDenominatorValue;\n    unminingFeeNumerator = unminingFeeNumeratorValue;\n    unminingFeeDenominator = unminingFeeDenominatorValue;\n    claimingFeeNumerator = claimingFeeNumeratorValue;\n    claimingFeeDenominator = claimingFeeDenominatorValue;\n    initDone = true;\n  }\n\n  // ADMIN\n  // *************************************************************************************\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function updateFeeCollector(address payable newFeeCollector) public {\n    require(newFeeCollector != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    feeCollector = newFeeCollector;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(newPendingAdmin != address(0), \"zero\");\n    require(msg.sender == admin, \"not admin\");\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \"not pendingAdmin\");\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(newPendingSuperAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin, \"not superAdmin\");\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \"not pendingSuperAdmin\");\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  // INBOUND CONTRACTS\n  // *************************************************************************************\n  function addInboundContract(address contr) public {\n    require(contr != address(0), \"zero\");\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    if (inboundContracts.length != 0) {\n      uint256 index = inboundContractIndex[contr];\n      require(inboundContracts[index] != contr, \"exists\");\n    }\n    uint256 len = inboundContracts.length;\n    inboundContractIndex[contr] = len;\n    inboundContractTrusted[contr] = true;\n    inboundContracts.push(contr);\n  }\n\n  function inboundContractTrustStatus(address contr, bool trustStatus) public {\n    require(contr != address(0), \"zero\");\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    uint256 index = inboundContractIndex[contr];\n    require(inboundContracts[index] == contr, \"not exists\");\n    inboundContractTrusted[contr] = trustStatus;\n  }\n\n  // REWARD\n  // *************************************************************************************\n  function updateRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    rewardPerBlockNumerator = numerator;\n    rewardPerBlockDenominator = denominator;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin, \"not an admin\");\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin, \"not an admin\");\n    require(amount \u003e 0, \"zero\");\n    require(rewardBalance \u003e= amount, \"not enough\");\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  // FEES\n  // *************************************************************************************\n  function updateMiningFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    miningFeeNumerator = numerator;\n    miningFeeDenominator = denominator;\n  }\n\n  function updateUnminingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    unminingFeeNumerator = numerator;\n    unminingFeeDenominator = denominator;\n  }\n\n  function updateClaimingFee(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    claimingFeeNumerator = numerator;\n    claimingFeeDenominator = denominator;\n  }\n\n  // CORE\n  // *************************************************************************************\n  function mineForVotesOnly(uint256 amount) public {\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    minerVotes[msg.sender] = minerVotes[msg.sender].add(amount);\n    vote.updateVotes(msg.sender, amount, true);\n    emit MinedForVotesOnly(msg.sender, amount);\n  }\n\n  function unmineForVotesOnly(uint256 amount) public {\n    require(amount \u003e 0, \"zero\");\n    require(minerVotes[msg.sender] \u003e= amount, \"not enough\");\n    minerVotes[msg.sender] = minerVotes[msg.sender].sub(amount);\n    vote.updateVotes(msg.sender, amount, false);\n    strongToken.transfer(msg.sender, amount);\n    emit UnminedForVotesOnly(msg.sender, amount);\n  }\n\n  function mineFor(address miner, uint256 amount) public {\n    require(inboundContractTrusted[msg.sender], \"not trusted\");\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    minerBalance[miner] = minerBalance[miner].add(amount);\n    totalBalance = totalBalance.add(amount);\n    if (minerBlockLastClaimedOn[miner] == 0) {\n      minerBlockLastClaimedOn[miner] = block.number;\n    }\n    vote.updateVotes(miner, amount, true);\n    emit MinedFor(miner, amount);\n  }\n\n  function mine(uint256 amount) public payable {\n    require(amount \u003e 0, \"zero\");\n    uint256 fee = amount.mul(miningFeeNumerator).div(miningFeeDenominator);\n    require(msg.value == fee, \"invalid fee\");\n    feeCollector.transfer(msg.value);\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    if (block.number \u003e minerBlockLastClaimedOn[msg.sender]) {\n      uint256 reward = getReward(msg.sender);\n      if (reward \u003e 0) {\n        minerBalance[msg.sender] = minerBalance[msg.sender].add(reward);\n        totalBalance = totalBalance.add(reward);\n        rewardBalance = rewardBalance.sub(reward);\n        vote.updateVotes(msg.sender, reward, true);\n        minerBlockLastClaimedOn[msg.sender] = block.number;\n      }\n    }\n    minerBalance[msg.sender] = minerBalance[msg.sender].add(amount);\n    totalBalance = totalBalance.add(amount);\n    if (minerBlockLastClaimedOn[msg.sender] == 0) {\n      minerBlockLastClaimedOn[msg.sender] = block.number;\n    }\n    vote.updateVotes(msg.sender, amount, true);\n    emit Mined(msg.sender, amount);\n  }\n\n  function unmine(uint256 amount) public payable {\n    require(amount \u003e 0, \"zero\");\n    uint256 fee = amount.mul(unminingFeeNumerator).div(unminingFeeDenominator);\n    require(msg.value == fee, \"invalid fee\");\n    require(minerBalance[msg.sender] \u003e= amount, \"not enough\");\n    feeCollector.transfer(msg.value);\n    bool unmineAll = (amount == minerBalance[msg.sender]);\n    if (block.number \u003e minerBlockLastClaimedOn[msg.sender]) {\n      uint256 reward = getReward(msg.sender);\n      if (reward \u003e 0) {\n        minerBalance[msg.sender] = minerBalance[msg.sender].add(reward);\n        totalBalance = totalBalance.add(reward);\n        rewardBalance = rewardBalance.sub(reward);\n        vote.updateVotes(msg.sender, reward, true);\n        minerBlockLastClaimedOn[msg.sender] = block.number;\n      }\n    }\n    uint256 amountToUnmine = unmineAll ? minerBalance[msg.sender] : amount;\n    minerBalance[msg.sender] = minerBalance[msg.sender].sub(amountToUnmine);\n    totalBalance = totalBalance.sub(amountToUnmine);\n    strongToken.transfer(msg.sender, amountToUnmine);\n    vote.updateVotes(msg.sender, amountToUnmine, false);\n    if (minerBalance[msg.sender] == 0) {\n      minerBlockLastClaimedOn[msg.sender] = 0;\n    }\n    emit Unmined(msg.sender, amountToUnmine);\n  }\n\n  function claim(uint256 blockNumber) public payable {\n    require(blockNumber \u003c= block.number, \"invalid block number\");\n    require(minerBlockLastClaimedOn[msg.sender] != 0, \"error\");\n    require(blockNumber \u003e minerBlockLastClaimedOn[msg.sender], \"too soon\");\n    uint256 reward = getRewardByBlock(msg.sender, blockNumber);\n    require(reward \u003e 0, \"no reward\");\n    uint256 fee = reward.mul(claimingFeeNumerator).div(claimingFeeDenominator);\n    require(msg.value == fee, \"invalid fee\");\n    feeCollector.transfer(msg.value);\n    minerBalance[msg.sender] = minerBalance[msg.sender].add(reward);\n    totalBalance = totalBalance.add(reward);\n    rewardBalance = rewardBalance.sub(reward);\n    minerBlockLastClaimedOn[msg.sender] = blockNumber;\n    vote.updateVotes(msg.sender, reward, true);\n    emit Claimed(msg.sender, reward);\n  }\n\n  function getReward(address miner) public view returns (uint256) {\n    return getRewardByBlock(miner, block.number);\n  }\n\n  function getRewardByBlock(address miner, uint256 blockNumber) public view returns (uint256) {\n    uint256 blockLastClaimedOn = minerBlockLastClaimedOn[miner];\n\n    if (blockNumber \u003e block.number) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n    if (blockNumber \u003c blockLastClaimedOn) return 0;\n    if (totalBalance == 0) return 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, blockNumber);\n    uint256 rewardOld = rewardPerBlockDenominator \u003e 0 ? rewardBlocks[0].mul(rewardPerBlockNumerator).div(rewardPerBlockDenominator) : 0;\n    uint256 rewardNew = rewardPerBlockDenominatorNew \u003e 0 ? rewardBlocks[1].mul(rewardPerBlockNumeratorNew).div(rewardPerBlockDenominatorNew) : 0;\n\n    return rewardOld.add(rewardNew).mul(minerBalance[miner]).div(totalBalance);\n  }\n\n  function updateRewardPerBlockNew(\n    uint256 numerator,\n    uint256 denominator,\n    uint256 effectiveBlock\n  ) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n\n    rewardPerBlockNumeratorNew = numerator;\n    rewardPerBlockDenominatorNew = denominator;\n    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;\n  }\n}\n"},"VoteInterface.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\ninterface VoteInterface {\n  function getPriorProposalVotes(address account, uint256 blockNumber) external view returns (uint96);\n\n  function updateVotes(\n    address voter,\n    uint256 rawAmount,\n    bool adding\n  ) external;\n}\n"},"VoteV3.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity ^0.6.12;\n\nimport \"./SafeMath.sol\";\nimport \"./IERC20.sol\";\nimport \"./StrongPoolInterface.sol\";\nimport \"./ServiceInterface.sol\";\nimport \"./rewards.sol\";\n\ncontract VoteV3 {\n  event Voted(address indexed voter, address indexed service, address indexed entity, uint256 amount);\n  event RecalledVote(address indexed voter, address indexed service, address indexed entity, uint256 amount);\n  event Claimed(address indexed claimer, uint256 amount);\n  event VotesAdded(address indexed miner, uint256 amount);\n  event VotesSubtracted(address indexed miner, uint256 amount);\n  event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);\n\n  using SafeMath for uint256;\n\n  StrongPoolInterface public strongPool;\n  IERC20 public strongToken;\n\n  bool public initDone;\n  address public admin;\n  address public pendingAdmin;\n  address public superAdmin;\n  address public pendingSuperAdmin;\n  address public parameterAdmin;\n\n  uint256 public rewardBalance;\n\n  uint256 public voterRewardPerBlockNumerator;\n  uint256 public voterRewardPerBlockDenominator;\n  uint256 public entityRewardPerBlockNumerator;\n  uint256 public entityRewardPerBlockDenominator;\n\n  mapping(address =\u003e uint96) public balances;\n  mapping(address =\u003e address) public delegates;\n\n  mapping(address =\u003e mapping(uint32 =\u003e uint32)) public checkpointsFromBlock;\n  mapping(address =\u003e mapping(uint32 =\u003e uint96)) public checkpointsVotes;\n  mapping(address =\u003e uint32) public numCheckpoints;\n\n  mapping(address =\u003e uint256) public voterVotesOut;\n  uint256 public totalVotesOut;\n\n  mapping(address =\u003e uint256) public serviceVotes;\n  mapping(address =\u003e mapping(address =\u003e uint256)) public serviceEntityVotes;\n  mapping(address =\u003e mapping(address =\u003e mapping(address =\u003e uint256))) public voterServiceEntityVotes;\n\n  mapping(address =\u003e address[]) public voterServices;\n  mapping(address =\u003e mapping(address =\u003e uint256)) public voterServiceIndex;\n\n  mapping(address =\u003e mapping(address =\u003e address[])) public voterServiceEntities;\n  mapping(address =\u003e mapping(address =\u003e mapping(address =\u003e uint256))) public voterServiceEntityIndex;\n\n  mapping(address =\u003e uint256) public voterBlockLastClaimedOn;\n  mapping(address =\u003e mapping(address =\u003e uint256)) public serviceEntityBlockLastClaimedOn;\n\n  address[] public serviceContracts;\n  mapping(address =\u003e uint256) public serviceContractIndex;\n  mapping(address =\u003e bool) public serviceContractActive;\n\n  uint256 public voterRewardPerBlockNumeratorNew;\n  uint256 public voterRewardPerBlockDenominatorNew;\n  uint256 public entityRewardPerBlockNumeratorNew;\n  uint256 public entityRewardPerBlockDenominatorNew;\n  uint256 public rewardPerBlockNewEffectiveBlock;\n\n  function init(\n    address strongTokenAddress,\n    address strongPoolAddress,\n    address adminAddress,\n    address superAdminAddress,\n    uint256 voterRewardPerBlockNumeratorValue,\n    uint256 voterRewardPerBlockDenominatorValue,\n    uint256 entityRewardPerBlockNumeratorValue,\n    uint256 entityRewardPerBlockDenominatorValue\n  ) public {\n    require(!initDone, \"init done\");\n    strongToken = IERC20(strongTokenAddress);\n    strongPool = StrongPoolInterface(strongPoolAddress);\n    admin = adminAddress;\n    superAdmin = superAdminAddress;\n    voterRewardPerBlockNumerator = voterRewardPerBlockNumeratorValue;\n    voterRewardPerBlockDenominator = voterRewardPerBlockDenominatorValue;\n    entityRewardPerBlockNumerator = entityRewardPerBlockNumeratorValue;\n    entityRewardPerBlockDenominator = entityRewardPerBlockDenominatorValue;\n    initDone = true;\n  }\n\n  // ADMIN\n  // *************************************************************************************\n  function updateParameterAdmin(address newParameterAdmin) public {\n    require(newParameterAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin);\n    parameterAdmin = newParameterAdmin;\n  }\n\n  function setPendingAdmin(address newPendingAdmin) public {\n    require(newPendingAdmin != address(0), \"zero\");\n    require(msg.sender == admin, \"not admin\");\n    pendingAdmin = newPendingAdmin;\n  }\n\n  function acceptAdmin() public {\n    require(msg.sender == pendingAdmin \u0026\u0026 msg.sender != address(0), \"not pendingAdmin\");\n    admin = pendingAdmin;\n    pendingAdmin = address(0);\n  }\n\n  function setPendingSuperAdmin(address newPendingSuperAdmin) public {\n    require(newPendingSuperAdmin != address(0), \"zero\");\n    require(msg.sender == superAdmin, \"not superAdmin\");\n    pendingSuperAdmin = newPendingSuperAdmin;\n  }\n\n  function acceptSuperAdmin() public {\n    require(msg.sender == pendingSuperAdmin \u0026\u0026 msg.sender != address(0), \"not pendingSuperAdmin\");\n    superAdmin = pendingSuperAdmin;\n    pendingSuperAdmin = address(0);\n  }\n\n  // SERVICE CONTRACTS\n  // *************************************************************************************\n  function addServiceContract(address contr) public {\n    require(contr != address(0), \"zero\");\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    if (serviceContracts.length != 0) {\n      uint256 index = serviceContractIndex[contr];\n      require(serviceContracts[index] != contr, \"exists\");\n    }\n    uint256 len = serviceContracts.length;\n    serviceContractIndex[contr] = len;\n    serviceContractActive[contr] = true;\n    serviceContracts.push(contr);\n  }\n\n  function updateServiceContractActiveStatus(address contr, bool activeStatus) public {\n    require(contr != address(0), \"zero\");\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(serviceContracts.length \u003e 0, \"zero\");\n    uint256 index = serviceContractIndex[contr];\n    require(serviceContracts[index] == contr, \"not exists\");\n    serviceContractActive[contr] = activeStatus;\n  }\n\n  function getServiceContracts() public view returns (address[] memory) {\n    return serviceContracts;\n  }\n\n  // REWARD\n  // *************************************************************************************\n  function updateVoterRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    voterRewardPerBlockNumerator = numerator;\n    voterRewardPerBlockDenominator = denominator;\n  }\n\n  function updateEntityRewardPerBlock(uint256 numerator, uint256 denominator) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not an admin\");\n    require(denominator != 0, \"invalid value\");\n    entityRewardPerBlockNumerator = numerator;\n    entityRewardPerBlockDenominator = denominator;\n  }\n\n  function deposit(uint256 amount) public {\n    require(msg.sender == superAdmin, \"not an admin\");\n    require(amount \u003e 0, \"zero\");\n    strongToken.transferFrom(msg.sender, address(this), amount);\n    rewardBalance = rewardBalance.add(amount);\n  }\n\n  function withdraw(address destination, uint256 amount) public {\n    require(msg.sender == superAdmin, \"not an admin\");\n    require(amount \u003e 0, \"zero\");\n    require(rewardBalance \u003e= amount, \"not enough\");\n    strongToken.transfer(destination, amount);\n    rewardBalance = rewardBalance.sub(amount);\n  }\n\n  // CORE\n  // *************************************************************************************\n  function getVoterServices(address voter) public view returns (address[] memory) {\n    return voterServices[voter];\n  }\n\n  function getVoterServiceEntities(address voter, address service) public view returns (address[] memory) {\n    return voterServiceEntities[voter][service];\n  }\n\n  function getVoterReward(address voter) public view returns (uint256) {\n    uint256 blockLastClaimedOn = voterBlockLastClaimedOn[voter];\n\n    if (totalVotesOut == 0) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, block.number);\n    uint256 rewardOld = voterRewardPerBlockNumerator \u003e 0 ? rewardBlocks[0].mul(voterRewardPerBlockNumerator).div(voterRewardPerBlockDenominator) : 0;\n    uint256 rewardNew = voterRewardPerBlockNumeratorNew \u003e 0 ? rewardBlocks[1].mul(voterRewardPerBlockNumeratorNew).div(voterRewardPerBlockDenominatorNew) : 0;\n\n    return rewardOld.add(rewardNew).mul(voterVotesOut[voter]).div(totalVotesOut);\n  }\n\n  function getEntityReward(address service, address entity) public view returns (uint256) {\n    uint256 blockLastClaimedOn = serviceEntityBlockLastClaimedOn[service][entity];\n\n    if (serviceVotes[service] == 0) return 0;\n    if (blockLastClaimedOn == 0) return 0;\n\n    uint256[2] memory rewardBlocks = rewards.blocks(blockLastClaimedOn, rewardPerBlockNewEffectiveBlock, block.number);\n    uint256 rewardOld = entityRewardPerBlockNumerator \u003e 0 ? rewardBlocks[0].mul(entityRewardPerBlockNumerator).div(entityRewardPerBlockDenominator) : 0;\n    uint256 rewardNew = entityRewardPerBlockNumeratorNew \u003e 0 ? rewardBlocks[1].mul(entityRewardPerBlockNumeratorNew).div(entityRewardPerBlockDenominatorNew) : 0;\n\n    return rewardOld.add(rewardNew).mul(serviceEntityVotes[service][entity]).div(serviceVotes[service]);\n  }\n\n  function vote(\n    address service,\n    address entity,\n    uint256 amount\n  ) public {\n    require(amount \u003e 0, \"zero\");\n    require(uint256(_getAvailableServiceEntityVotes(msg.sender)) \u003e= amount, \"not enough\");\n    require(serviceContractActive[service], \"service not active\");\n    require(ServiceInterface(service).isEntityActive(entity), \"entity not active\");\n\n    uint256 serviceIndex = voterServiceIndex[msg.sender][service];\n    if (voterServices[msg.sender].length == 0 || voterServices[msg.sender][serviceIndex] != service) {\n      uint256 len = voterServices[msg.sender].length;\n      voterServiceIndex[msg.sender][service] = len;\n      voterServices[msg.sender].push(service);\n    }\n\n    uint256 entityIndex = voterServiceEntityIndex[msg.sender][service][entity];\n    if (\n      voterServiceEntities[msg.sender][service].length == 0 ||\n      voterServiceEntities[msg.sender][service][entityIndex] != entity\n    ) {\n      uint256 len = voterServiceEntities[msg.sender][service].length;\n      voterServiceEntityIndex[msg.sender][service][entity] = len;\n      voterServiceEntities[msg.sender][service].push(entity);\n    }\n\n    if (block.number \u003e voterBlockLastClaimedOn[msg.sender]) {\n      uint256 reward = getVoterReward(msg.sender);\n      if (reward \u003e 0) {\n        rewardBalance = rewardBalance.sub(reward);\n        strongToken.approve(address(strongPool), reward);\n        strongPool.mineFor(msg.sender, reward);\n        voterBlockLastClaimedOn[msg.sender] = block.number;\n      }\n    }\n\n    if (block.number \u003e serviceEntityBlockLastClaimedOn[service][entity]) {\n      uint256 reward = getEntityReward(service, entity);\n      if (reward \u003e 0) {\n        rewardBalance = rewardBalance.sub(reward);\n        strongToken.approve(address(strongPool), reward);\n        strongPool.mineFor(entity, reward);\n        serviceEntityBlockLastClaimedOn[service][entity] = block.number;\n      }\n    }\n\n    serviceVotes[service] = serviceVotes[service].add(amount);\n    serviceEntityVotes[service][entity] = serviceEntityVotes[service][entity].add(amount);\n    voterServiceEntityVotes[msg.sender][service][entity] = voterServiceEntityVotes[msg.sender][service][entity].add(\n      amount\n    );\n\n    voterVotesOut[msg.sender] = voterVotesOut[msg.sender].add(amount);\n    totalVotesOut = totalVotesOut.add(amount);\n\n    if (voterBlockLastClaimedOn[msg.sender] == 0) {\n      voterBlockLastClaimedOn[msg.sender] = block.number;\n    }\n\n    if (serviceEntityBlockLastClaimedOn[service][entity] == 0) {\n      serviceEntityBlockLastClaimedOn[service][entity] = block.number;\n    }\n\n    emit Voted(msg.sender, service, entity, amount);\n  }\n\n  function recallVote(\n    address service,\n    address entity,\n    uint256 amount\n  ) public {\n    require(amount \u003e 0, \"zero\");\n    require(voterServiceEntityVotes[msg.sender][service][entity] \u003e= amount, \"not enough\");\n\n    if (block.number \u003e voterBlockLastClaimedOn[msg.sender]) {\n      uint256 reward = getVoterReward(msg.sender);\n      if (reward \u003e 0) {\n        rewardBalance = rewardBalance.sub(reward);\n        strongToken.approve(address(strongPool), reward);\n        strongPool.mineFor(msg.sender, reward);\n        voterBlockLastClaimedOn[msg.sender] = block.number;\n      }\n    }\n\n    if (block.number \u003e serviceEntityBlockLastClaimedOn[service][entity]) {\n      uint256 reward = getEntityReward(service, entity);\n      if (reward \u003e 0) {\n        rewardBalance = rewardBalance.sub(reward);\n        strongToken.approve(address(strongPool), reward);\n        strongPool.mineFor(entity, reward);\n        serviceEntityBlockLastClaimedOn[service][entity] = block.number;\n      }\n    }\n\n    serviceVotes[service] = serviceVotes[service].sub(amount);\n    serviceEntityVotes[service][entity] = serviceEntityVotes[service][entity].sub(amount);\n    voterServiceEntityVotes[msg.sender][service][entity] = voterServiceEntityVotes[msg.sender][service][entity].sub(\n      amount\n    );\n\n    voterVotesOut[msg.sender] = voterVotesOut[msg.sender].sub(amount);\n    totalVotesOut = totalVotesOut.sub(amount);\n\n    if (voterVotesOut[msg.sender] == 0) {\n      voterBlockLastClaimedOn[msg.sender] = 0;\n    }\n\n    if (serviceEntityVotes[service][entity] == 0) {\n      serviceEntityBlockLastClaimedOn[service][entity] = 0;\n    }\n    emit RecalledVote(msg.sender, service, entity, amount);\n  }\n\n  function voterClaim() public {\n    require(voterBlockLastClaimedOn[msg.sender] != 0, \"error\");\n    require(block.number \u003e voterBlockLastClaimedOn[msg.sender], \"too soon\");\n    uint256 reward = getVoterReward(msg.sender);\n    require(reward \u003e 0, \"no reward\");\n    rewardBalance = rewardBalance.sub(reward);\n    strongToken.approve(address(strongPool), reward);\n    strongPool.mineFor(msg.sender, reward);\n    voterBlockLastClaimedOn[msg.sender] = block.number;\n    emit Claimed(msg.sender, reward);\n  }\n\n  function entityClaim(address service) public {\n    require(serviceEntityBlockLastClaimedOn[service][msg.sender] != 0, \"error\");\n    require(block.number \u003e serviceEntityBlockLastClaimedOn[service][msg.sender], \"too soon\");\n    require(ServiceInterface(service).isEntityActive(msg.sender), \"not active\");\n    uint256 reward = getEntityReward(service, msg.sender);\n    require(reward \u003e 0, \"no reward\");\n    rewardBalance = rewardBalance.sub(reward);\n    strongToken.approve(address(strongPool), reward);\n    strongPool.mineFor(msg.sender, reward);\n    serviceEntityBlockLastClaimedOn[service][msg.sender] = block.number;\n    emit Claimed(msg.sender, reward);\n  }\n\n  function updateVotes(\n    address voter,\n    uint256 rawAmount,\n    bool adding\n  ) public {\n    require(msg.sender == address(strongPool), \"not strongPool\");\n    uint96 amount = _safe96(rawAmount, \"amount exceeds 96 bits\");\n    if (adding) {\n      _addVotes(voter, amount);\n    } else {\n      require(_getAvailableServiceEntityVotes(voter) \u003e= amount, \"recall votes\");\n      _subVotes(voter, amount);\n    }\n  }\n\n  function getCurrentProposalVotes(address account) external view returns (uint96) {\n    return _getCurrentProposalVotes(account);\n  }\n\n  function getPriorProposalVotes(address account, uint256 blockNumber) external view returns (uint96) {\n    require(blockNumber \u003c block.number, \"not yet determined\");\n    uint32 nCheckpoints = numCheckpoints[account];\n    if (nCheckpoints == 0) {\n      return 0;\n    }\n    if (checkpointsFromBlock[account][nCheckpoints - 1] \u003c= blockNumber) {\n      return checkpointsVotes[account][nCheckpoints - 1];\n    }\n    if (checkpointsFromBlock[account][0] \u003e blockNumber) {\n      return 0;\n    }\n    uint32 lower = 0;\n    uint32 upper = nCheckpoints - 1;\n    while (upper \u003e lower) {\n      uint32 center = upper - (upper - lower) / 2;\n      uint32 fromBlock = checkpointsFromBlock[account][center];\n      uint96 votes = checkpointsVotes[account][center];\n      if (fromBlock == blockNumber) {\n        return votes;\n      } else if (fromBlock \u003c blockNumber) {\n        lower = center;\n      } else {\n        upper = center - 1;\n      }\n    }\n    return checkpointsVotes[account][lower];\n  }\n\n  function getAvailableServiceEntityVotes(address account) public view returns (uint96) {\n    return _getAvailableServiceEntityVotes(account);\n  }\n\n  // SUPPORT\n  // *************************************************************************************\n  function _addVotes(address voter, uint96 amount) internal {\n    require(voter != address(0), \"zero address\");\n    balances[voter] = _add96(balances[voter], amount, \"vote amount overflows\");\n    _addDelegates(voter, amount);\n    emit VotesAdded(voter, amount);\n  }\n\n  function _subVotes(address voter, uint96 amount) internal {\n    balances[voter] = _sub96(balances[voter], amount, \"vote amount exceeds balance\");\n    _subtractDelegates(voter, amount);\n    emit VotesSubtracted(voter, amount);\n  }\n\n  function _addDelegates(address miner, uint96 amount) internal {\n    if (delegates[miner] == address(0)) {\n      delegates[miner] = miner;\n    }\n    address currentDelegate = delegates[miner];\n    _moveDelegates(address(0), currentDelegate, amount);\n  }\n\n  function _subtractDelegates(address miner, uint96 amount) internal {\n    address currentDelegate = delegates[miner];\n    _moveDelegates(currentDelegate, address(0), amount);\n  }\n\n  function _moveDelegates(\n    address srcRep,\n    address dstRep,\n    uint96 amount\n  ) internal {\n    if (srcRep != dstRep \u0026\u0026 amount \u003e 0) {\n      if (srcRep != address(0)) {\n        uint32 srcRepNum = numCheckpoints[srcRep];\n        uint96 srcRepOld = srcRepNum \u003e 0 ? checkpointsVotes[srcRep][srcRepNum - 1] : 0;\n        uint96 srcRepNew = _sub96(srcRepOld, amount, \"vote amount underflows\");\n        _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);\n      }\n      if (dstRep != address(0)) {\n        uint32 dstRepNum = numCheckpoints[dstRep];\n        uint96 dstRepOld = dstRepNum \u003e 0 ? checkpointsVotes[dstRep][dstRepNum - 1] : 0;\n        uint96 dstRepNew = _add96(dstRepOld, amount, \"vote amount overflows\");\n        _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);\n      }\n    }\n  }\n\n  function _writeCheckpoint(\n    address delegatee,\n    uint32 nCheckpoints,\n    uint96 oldVotes,\n    uint96 newVotes\n  ) internal {\n    uint32 blockNumber = _safe32(block.number, \"block number exceeds 32 bits\");\n    if (nCheckpoints \u003e 0 \u0026\u0026 checkpointsFromBlock[delegatee][nCheckpoints - 1] == blockNumber) {\n      checkpointsVotes[delegatee][nCheckpoints - 1] = newVotes;\n    } else {\n      checkpointsFromBlock[delegatee][nCheckpoints] = blockNumber;\n      checkpointsVotes[delegatee][nCheckpoints] = newVotes;\n      numCheckpoints[delegatee] = nCheckpoints + 1;\n    }\n\n    emit DelegateVotesChanged(delegatee, oldVotes, newVotes);\n  }\n\n  function _safe32(uint256 n, string memory errorMessage) internal pure returns (uint32) {\n    require(n \u003c 2**32, errorMessage);\n    return uint32(n);\n  }\n\n  function _safe96(uint256 n, string memory errorMessage) internal pure returns (uint96) {\n    require(n \u003c 2**96, errorMessage);\n    return uint96(n);\n  }\n\n  function _add96(\n    uint96 a,\n    uint96 b,\n    string memory errorMessage\n  ) internal pure returns (uint96) {\n    uint96 c = a + b;\n    require(c \u003e= a, errorMessage);\n    return c;\n  }\n\n  function _sub96(\n    uint96 a,\n    uint96 b,\n    string memory errorMessage\n  ) internal pure returns (uint96) {\n    require(b \u003c= a, errorMessage);\n    return a - b;\n  }\n\n  function _getCurrentProposalVotes(address account) internal view returns (uint96) {\n    uint32 nCheckpoints = numCheckpoints[account];\n    return nCheckpoints \u003e 0 ? checkpointsVotes[account][nCheckpoints - 1] : 0;\n  }\n\n  function _getAvailableServiceEntityVotes(address account) internal view returns (uint96) {\n    uint96 proposalVotes = _getCurrentProposalVotes(account);\n    return proposalVotes == 0 ? 0 : proposalVotes - _safe96(voterVotesOut[account], \"voterVotesOut exceeds 96 bits\");\n  }\n\n  function updateRewardPerBlockNew(\n    uint256 numeratorVoter,\n    uint256 denominatorVoter,\n    uint256 numeratorEntity,\n    uint256 denominatorEntity,\n    uint256 effectiveBlock\n  ) public {\n    require(msg.sender == admin || msg.sender == parameterAdmin || msg.sender == superAdmin, \"not admin\");\n\n    voterRewardPerBlockNumeratorNew = numeratorVoter;\n    voterRewardPerBlockDenominatorNew = denominatorVoter;\n    entityRewardPerBlockNumeratorNew = numeratorEntity;\n    entityRewardPerBlockDenominatorNew = denominatorEntity;\n    rewardPerBlockNewEffectiveBlock = effectiveBlock != 0 ? effectiveBlock : block.number;\n  }\n}\n"}}