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Latest 25 from a total of 549 transactions
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Withdraw | 13664637 | 1020 days ago | IN | 0 ETH | 0.0081179 | ||||
Stake | 13664608 | 1020 days ago | IN | 0 ETH | 0.01151806 | ||||
Stake | 13651380 | 1023 days ago | IN | 0 ETH | 0.01203759 | ||||
Withdraw | 13023195 | 1120 days ago | IN | 0 ETH | 0.00317684 | ||||
Stake | 13022297 | 1121 days ago | IN | 0 ETH | 0.00625873 | ||||
Exit | 13013244 | 1122 days ago | IN | 0 ETH | 0.00544124 | ||||
Withdraw | 12843460 | 1149 days ago | IN | 0 ETH | 0.00131212 | ||||
Withdraw | 12804156 | 1155 days ago | IN | 0 ETH | 0.0007716 | ||||
Exit | 12723860 | 1167 days ago | IN | 0 ETH | 0.00177633 | ||||
Stake | 12707842 | 1170 days ago | IN | 0 ETH | 0.00116308 | ||||
Exit | 12654567 | 1178 days ago | IN | 0 ETH | 0.00128038 | ||||
Exit | 12627637 | 1182 days ago | IN | 0 ETH | 0.00070955 | ||||
Exit | 12533324 | 1197 days ago | IN | 0 ETH | 0.00252911 | ||||
Withdraw | 12519227 | 1199 days ago | IN | 0 ETH | 0.00301708 | ||||
Withdraw | 12507733 | 1201 days ago | IN | 0 ETH | 0.0029171 | ||||
Exit | 12309924 | 1231 days ago | IN | 0 ETH | 0.00391478 | ||||
Withdraw | 12289874 | 1234 days ago | IN | 0 ETH | 0.00903052 | ||||
Withdraw | 12183266 | 1251 days ago | IN | 0 ETH | 0.0111022 | ||||
Stake | 12183250 | 1251 days ago | IN | 0 ETH | 0.0189482 | ||||
Stake | 12123003 | 1260 days ago | IN | 0 ETH | 0.01171595 | ||||
Withdraw | 12119552 | 1261 days ago | IN | 0 ETH | 0.00702768 | ||||
Exit | 12035077 | 1274 days ago | IN | 0 ETH | 0.01160472 | ||||
Exit | 12019023 | 1276 days ago | IN | 0 ETH | 0.01112161 | ||||
Stake | 12009799 | 1278 days ago | IN | 0 ETH | 0.00918621 | ||||
Withdraw | 12009442 | 1278 days ago | IN | 0 ETH | 0.00702873 |
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Contract Name:
Boardroom
Compiler Version
v0.6.12+commit.27d51765
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
pragma solidity ^0.6.0; //pragma experimental ABIEncoderV2; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import './lib/Safe112.sol'; import './owner/Operator.sol'; import './utils/ContractGuard.sol'; import './interfaces/IBasisAsset.sol'; contract ShareWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public share; uint256 private _totalSupply; mapping(address => uint256) private _balances; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public virtual { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); share.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public virtual { uint256 directorShare = _balances[msg.sender]; require( directorShare >= amount, 'Boardroom: withdraw request greater than staked amount' ); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = directorShare.sub(amount); share.safeTransfer(msg.sender, amount); } } contract Boardroom is ShareWrapper, ContractGuard, Operator { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; using Safe112 for uint112; /* ========== DATA STRUCTURES ========== */ struct Boardseat { uint256 lastSnapshotIndex; uint256 rewardEarned; } struct BoardSnapshot { uint256 time; uint256 rewardReceived; uint256 rewardPerShare; } /* ========== STATE VARIABLES ========== */ IERC20 private gold; mapping(address => Boardseat) private directors; BoardSnapshot[] private boardHistory; /* ========== CONSTRUCTOR ========== */ constructor(IERC20 _gold, IERC20 _share) public { gold = _gold; share = _share; BoardSnapshot memory genesisSnapshot = BoardSnapshot({ time: block.number, rewardReceived: 0, rewardPerShare: 0 }); boardHistory.push(genesisSnapshot); } /* ========== Modifiers =============== */ modifier directorExists { require( balanceOf(msg.sender) > 0, 'Boardroom: The director does not exist' ); _; } modifier updateReward(address director) { if (director != address(0)) { Boardseat memory seat = directors[director]; seat.rewardEarned = earned(director); seat.lastSnapshotIndex = latestSnapshotIndex(); directors[director] = seat; } _; } /* ========== VIEW FUNCTIONS ========== */ // =========== Snapshot getters function latestSnapshotIndex() public view returns (uint256) { return boardHistory.length.sub(1); } function getLatestSnapshot() internal view returns (BoardSnapshot memory) { return boardHistory[latestSnapshotIndex()]; } function getLastSnapshotIndexOf(address director) public view returns (uint256) { return directors[director].lastSnapshotIndex; } function getLastSnapshotOf(address director) internal view returns (BoardSnapshot memory) { return boardHistory[getLastSnapshotIndexOf(director)]; } // =========== Director getters function rewardPerShare() public view returns (uint256) { return getLatestSnapshot().rewardPerShare; } function earned(address director) public view returns (uint256) { uint256 latestRPS = getLatestSnapshot().rewardPerShare; uint256 storedRPS = getLastSnapshotOf(director).rewardPerShare; return balanceOf(director).mul(latestRPS.sub(storedRPS)).div(1e18).add( directors[director].rewardEarned ); } /* ========== MUTATIVE FUNCTIONS ========== */ function stake(uint256 amount) public override onlyOneBlock updateReward(msg.sender) { require(amount > 0, 'Boardroom: Cannot stake 0'); super.stake(amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override onlyOneBlock directorExists updateReward(msg.sender) { require(amount > 0, 'Boardroom: Cannot withdraw 0'); super.withdraw(amount); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); claimReward(); } function claimReward() public updateReward(msg.sender) { uint256 reward = directors[msg.sender].rewardEarned; if (reward > 0) { directors[msg.sender].rewardEarned = 0; gold.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function allocateSeigniorage(uint256 amount) external onlyOneBlock onlyOperator { require(amount > 0, 'Boardroom: Cannot allocate 0'); require( totalSupply() > 0, 'Boardroom: Cannot allocate when totalSupply is 0' ); // Create & add new snapshot uint256 prevRPS = getLatestSnapshot().rewardPerShare; uint256 nextRPS = prevRPS.add(amount.mul(1e18).div(totalSupply())); BoardSnapshot memory newSnapshot = BoardSnapshot({ time: block.number, rewardReceived: amount, rewardPerShare: nextRPS }); boardHistory.push(newSnapshot); gold.safeTransferFrom(msg.sender, address(this), amount); emit RewardAdded(msg.sender, amount); } /* ========== EVENTS ========== */ event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); event RewardAdded(address indexed user, uint256 reward); }
pragma solidity ^0.6.0; interface IBasisAsset { function mint(address recipient, uint256 amount) external returns (bool); function burn(uint256 amount) external; function burnFrom(address from, uint256 amount) external; function isOperator() external returns (bool); function operator() external view returns (address); }
pragma solidity ^0.6.0; library Safe112 { function add(uint112 a, uint112 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, 'Safe112: addition overflow'); return c; } function sub(uint112 a, uint112 b) internal pure returns (uint256) { return sub(a, b, 'Safe112: subtraction overflow'); } function sub( uint112 a, uint112 b, string memory errorMessage ) internal pure returns (uint112) { require(b <= a, errorMessage); uint112 c = a - b; return c; } function mul(uint112 a, uint112 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, 'Safe112: multiplication overflow'); return c; } function div(uint112 a, uint112 b) internal pure returns (uint256) { return div(a, b, 'Safe112: division by zero'); } function div( uint112 a, uint112 b, string memory errorMessage ) internal pure returns (uint112) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint112 c = a / b; return c; } function mod(uint112 a, uint112 b) internal pure returns (uint256) { return mod(a, b, 'Safe112: modulo by zero'); } function mod( uint112 a, uint112 b, string memory errorMessage ) internal pure returns (uint112) { require(b != 0, errorMessage); return a % b; } }
pragma solidity ^0.6.0; import '@openzeppelin/contracts/GSN/Context.sol'; import '@openzeppelin/contracts/access/Ownable.sol'; contract Operator is Context, Ownable { address private _operator; event OperatorTransferred( address indexed previousOperator, address indexed newOperator ); constructor() internal { _operator = _msgSender(); emit OperatorTransferred(address(0), _operator); } function operator() public view returns (address) { return _operator; } modifier onlyOperator() { require( _operator == msg.sender, 'operator: caller is not the operator' ); _; } function isOperator() public view returns (bool) { return _msgSender() == _operator; } function transferOperator(address newOperator_) public onlyOwner { _transferOperator(newOperator_); } function _transferOperator(address newOperator_) internal { require( newOperator_ != address(0), 'operator: zero address given for new operator' ); emit OperatorTransferred(address(0), newOperator_); _operator = newOperator_; } }
pragma solidity ^0.6.12; contract ContractGuard { mapping(uint256 => mapping(address => bool)) private _status; function checkSameOriginReentranted() internal view returns (bool) { return _status[block.number][tx.origin]; } function checkSameSenderReentranted() internal view returns (bool) { return _status[block.number][msg.sender]; } modifier onlyOneBlock() { require( !checkSameOriginReentranted(), 'ContractGuard: one block, one function' ); require( !checkSameSenderReentranted(), 'ContractGuard: one block, one function' ); _; _status[block.number][tx.origin] = true; _status[block.number][msg.sender] = true; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @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 GSN 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 payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "../GSN/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// 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, 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) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * 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); uint256 c = a - b; return c; } /** * @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) { // 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 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts 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) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts 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) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @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; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.2; /** * @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 in 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"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); 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); } } } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "istanbul", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
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[{"inputs":[{"internalType":"contract IERC20","name":"_gold","type":"address"},{"internalType":"contract IERC20","name":"_share","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOperator","type":"address"},{"indexed":true,"internalType":"address","name":"newOperator","type":"address"}],"name":"OperatorTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"allocateSeigniorage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"director","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"exit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"director","type":"address"}],"name":"getLastSnapshotIndexOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isOperator","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestSnapshotIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerShare","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"share","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOperator_","type":"address"}],"name":"transferOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000b34ab2f65c6e4f764ffe740ab83f982021faed6d000000000000000000000000a9d232cc381715ae791417b624d7c4509d2c28db
-----Decoded View---------------
Arg [0] : _gold (address): 0xB34Ab2f65c6e4F764fFe740ab83F982021Faed6d
Arg [1] : _share (address): 0xA9d232cC381715aE791417B624D7C4509D2c28DB
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000b34ab2f65c6e4f764ffe740ab83f982021faed6d
Arg [1] : 000000000000000000000000a9d232cc381715ae791417b624d7c4509d2c28db
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Multichain Portfolio | 26 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.