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TokenTracker
Latest 8 from a total of 8 transactions
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Approve | 15422387 | 734 days ago | IN | 0 ETH | 0.00060028 | ||||
Approve | 15422365 | 734 days ago | IN | 0 ETH | 0.00029924 | ||||
Approve | 15422214 | 734 days ago | IN | 0 ETH | 0.00037682 | ||||
Approve | 15422214 | 734 days ago | IN | 0 ETH | 0.00037682 | ||||
Approve | 15422208 | 734 days ago | IN | 0 ETH | 0.00040671 | ||||
Approve | 15422204 | 734 days ago | IN | 0 ETH | 0.0004289 | ||||
Approve | 15422153 | 734 days ago | IN | 0 ETH | 0.00051721 | ||||
0x61016060 | 15422023 | 734 days ago | IN | 0 ETH | 0.03584917 |
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Contract Name:
TokenERC20
Compiler Version
v0.8.9+commit.e5eed63a
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
//Made with Student Coin Terminal //SPDX-License-Identifier: NONE pragma solidity ^0.8.0; import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol"; import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import {IToken} from "../interfaces/IToken.sol"; contract TokenERC20 is ERC20, AccessControl, IToken { // roles bytes32 public constant CAN_MINT_ROLE = keccak256("CAN MINT"); bytes32 public constant CAN_BURN_ROLE = keccak256("CAN BURN"); // basic uint8 private immutable _decimals; uint256 private immutable _cap; // tax uint8 public immutable tax; // sale address public immutable saleAddress; uint256 private immutable _saleSupply; // vesting address public immutable vestingAddress; uint256 private immutable _vestingSupply; // internal mapping(address => bool) public internalContracts; // errors error InvalidDecimals(uint8 decimals_); error SupplyGreaterThanCap( uint256 supply_, uint256 saleSupply_, uint256 vestingSupply_, uint256 cap_ ); error CapExceeded(uint256 amount_, uint256 cap_); error InvalidTransactionTax(uint256 percentage_); error InvalidAllowance(uint256 allowance_, uint256 amount_); error InvalidSaleConfig(address sale_, uint256 saleSupply_); error InvalidVestingConfig(address vesting_, uint256 vestingSupply_); constructor( string memory name_, string memory symbol_, bytes memory arguments_ ) ERC20(name_, symbol_) { // tx members address sender = tx.origin; // decode ( uint8 decimals_, uint256 cap_, uint256 initialSupply_, bool canMint_, bool canBurn_, uint8 tax_, address sale_, uint256 saleSupply_, address vesting_, uint256 vestingSupply_ ) = abi.decode( arguments_, (uint8, uint256, uint256, bool, bool, uint8, address, uint256, address, uint256) ); // verify decimals if (decimals_ > 18) { revert InvalidDecimals(decimals_); } // for uncapped use max uint256 if (cap_ == 0) { cap_ = type(uint256).max; } // verify supply if (initialSupply_ + saleSupply_ + vestingSupply_ > cap_) { revert SupplyGreaterThanCap(initialSupply_, saleSupply_, vestingSupply_, cap_); } // verify transaction tax if (tax_ > 100) { revert InvalidTransactionTax(tax_); } if ((saleSupply_ > 0 && sale_ == address(0x0)) || (saleSupply_ == 0 && sale_ != address(0x0))) { revert InvalidSaleConfig(sale_, saleSupply_); } if ( (vestingSupply_ > 0 && vesting_ == address(0x0)) || (vestingSupply_ == 0 && vesting_ != address(0x0)) ) { revert InvalidVestingConfig(vesting_, vestingSupply_); } // token _decimals = decimals_; _cap = cap_; tax = tax_; // mint supply if (initialSupply_ > 0) { _mint(sender, initialSupply_); } // setup sale saleAddress = sale_; _saleSupply = saleSupply_; if (sale_ != address(0x0)) { // internal internalContracts[sale_] = true; // mint _mint(sale_, saleSupply_); } else { if (saleSupply_ != 0) revert InvalidSaleConfig(sale_, saleSupply_); } // setup vesting vestingAddress = vesting_; _vestingSupply = vestingSupply_; if (vesting_ != address(0x0)) { // internal internalContracts[vesting_] = true; // mint _mint(vesting_, vestingSupply_); } else { if (vestingSupply_ != 0) revert InvalidVestingConfig(vesting_, vestingSupply_); } // base role setup _setupRole(DEFAULT_ADMIN_ROLE, sender); _setRoleAdmin(CAN_MINT_ROLE, DEFAULT_ADMIN_ROLE); _setRoleAdmin(CAN_BURN_ROLE, DEFAULT_ADMIN_ROLE); // mint role if (canMint_) { _setupRole(CAN_MINT_ROLE, sender); } // burn role if (canBurn_) { _setupRole(CAN_BURN_ROLE, sender); } // burn for sale if (sale_ != address(0x0)) { _setupRole(CAN_BURN_ROLE, sale_); } } // getters function decimals() public view virtual override returns (uint8) { return _decimals; } function cap() public view virtual returns (uint256) { return _cap; } function saleSupply() external view override returns (uint256) { return _saleSupply; } function vestingSupply() external view override returns (uint256) { return _vestingSupply; } // mint & burn function mint(address account, uint256 amount) external onlyRole(CAN_MINT_ROLE) { _mint(account, amount); } function burn(uint256 amount) external override onlyRole(CAN_BURN_ROLE) { _burn(msg.sender, amount); } function _mint(address account, uint256 amount) internal virtual override { uint256 sum = ERC20.totalSupply() + amount; if (sum > _cap) { revert CapExceeded(sum, _cap); } super._mint(account, amount); } // transfer function _calculateTax(uint256 amount) internal view returns (uint256, uint256) { uint256 burned = (amount * tax) / 100; uint256 untaxed = amount - burned; return (burned, untaxed); } function isNotInternalTransfer() private view returns (bool) { return !internalContracts[msg.sender]; } function transfer(address recipient, uint256 amount) public virtual override returns (bool) { if (tax > 0 && isNotInternalTransfer()) { // calculate tax (uint256 burned, uint256 untaxed) = _calculateTax(amount); // burn and transfer _burn(msg.sender, burned); return super.transfer(recipient, untaxed); } else { return super.transfer(recipient, amount); } } function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { if (tax > 0 && isNotInternalTransfer()) { // calculate tax (uint256 burned, uint256 untaxed) = _calculateTax(amount); // allowance for burn uint256 currentAllowance = allowance(sender, _msgSender()); if (currentAllowance < amount) { revert InvalidAllowance(currentAllowance, amount); } unchecked { _approve(sender, _msgSender(), currentAllowance - burned); } // burn and transfer _burn(sender, burned); return super.transferFrom(sender, recipient, untaxed); } else { return super.transferFrom(sender, recipient, amount); } } }
//Made with Student Coin Terminal //SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; interface IBurnable { function burn(uint256) external; }
//Made with Student Coin Terminal //SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {IBurnable} from "./IBurnable.sol"; import {ISaleSupply} from "./ISaleSupply.sol"; import {IVestingSupply} from "./IVestingSupply.sol"; interface IToken is IBurnable, ISaleSupply, IVestingSupply {}
//Made with Student Coin Terminal //SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; interface ISaleSupply { function saleSupply() external view returns (uint256); }
//Made with Student Coin Terminal //SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; interface IVestingSupply { function vestingSupply() external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (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})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view { 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 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 v4.4.0 (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: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, 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}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), 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}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - 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) { _approve(_msgSender(), spender, _allowances[_msgSender()][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) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), 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: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, 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 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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 `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 // OpenZeppelin Contracts v4.4.0 (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); }
//Made with Student Coin Terminal //SPDX-License-Identifier: NONE pragma solidity ^0.8.0; import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol"; import {Configurable} from "../utils/Configurable.sol"; import {IWhitelist} from "../interfaces/IWhitelist.sol"; contract Whitelist is AccessControl, Configurable, IWhitelist { // roles bytes32 public constant CAN_MANAGE_ROLE = keccak256("CAN MANAGE"); // structs struct Member { address account; uint256 allowance; // zero allowance -> inf allowance } struct Whitelisted { uint256 allowance; // zero allowance -> not whitelisted uint256 used; } // storage mapping(address => Whitelisted) public members; address public sale; // events event AccountNotWhitelisted(address account); event NotEnoughAllowance(address account, uint256 allowance, uint256 amount); event WhitelistUpdated(uint256 created, uint256 updated, uint256 deleted); // errors error InvalidAccount(address account, uint8 i); error AccountAlreadyWhitelisted(address account); error AccountDoesNotExist(address account); error InvalidSender(address account); error UsedBiggerThanAllowance(address account, uint256 used, uint256 newAllowance); modifier onlySale() { address sender = msg.sender; if (sender != sale) { revert InvalidSender(sender); } _; } constructor(bytes memory arguments_) { // tx members address sender = tx.origin; // decode Member[] memory members_ = abi.decode(arguments_, (Member[])); for (uint8 i = 0; i < members_.length; i++) { // member Member memory member = members_[i]; // check address if (member.account == address(0x0)) { revert InvalidAccount(member.account, i); } if (member.allowance == 0) { member.allowance = type(uint256).max; } members[member.account] = Whitelisted(member.allowance, 0); } // role setup _setupRole(DEFAULT_ADMIN_ROLE, sender); _setRoleAdmin(CAN_MANAGE_ROLE, DEFAULT_ADMIN_ROLE); _setupRole(CAN_MANAGE_ROLE, sender); } function configure(address sale_) external onlyInState(State.UNCONFIGURED) onlyRole(DEFAULT_ADMIN_ROLE) { // storage sale = sale_; // state state = State.CONFIGURED; } function update( Member[] memory toCreate, Member[] memory toUpdate, address[] memory toDelete ) external onlyRole(CAN_MANAGE_ROLE) { // bulk create for (uint8 i = 0; i < toCreate.length; i++) { // create member if not exists Member memory member = toCreate[i]; if (members[member.account].allowance != 0) { revert AccountAlreadyWhitelisted(member.account); } if (member.allowance == 0) { member.allowance = type(uint256).max; } // optional allowance, used 0 members[member.account] = Whitelisted(member.allowance, 0); } // bulk update for (uint8 i = 0; i < toUpdate.length; i++) { // update member if exists Member memory member = toUpdate[i]; if (members[member.account].allowance == 0) { revert AccountDoesNotExist(member.account); } // zero allowance in input is max allowance if (member.allowance == 0) { member.allowance = type(uint256).max; } // revert if allowance limited and smaller than used uint256 used = members[member.account].used; if (used > member.allowance) { revert UsedBiggerThanAllowance(member.account, used, member.allowance); } // allowance updated, preserve used members[member.account].allowance = member.allowance; } // bulk delete for (uint8 i = 0; i < toDelete.length; i++) { // delete member if exists address account = toDelete[i]; if (members[account].allowance == 0) { revert AccountDoesNotExist(account); } // empty storage members[account] = Whitelisted(0, 0); } // event emit WhitelistUpdated(toCreate.length, toUpdate.length, toDelete.length); } function use(uint256 amount) external override onlyInState(State.CONFIGURED) onlySale returns (bool) { // tx.members address sender = tx.origin; // member Whitelisted memory whitelisted = members[sender]; // not whitelisted if (whitelisted.allowance == 0) { emit AccountNotWhitelisted(sender); return false; } // limit not enough uint256 allowance = whitelisted.allowance; if (allowance < whitelisted.used + amount) { emit NotEnoughAllowance(sender, allowance, amount); return false; } // storage and return members[sender].used += amount; return true; } }
//Made with Student Coin Terminal //SPDX-License-Identifier: NONE pragma solidity ^0.8.0; abstract contract Configurable { // enum enum State { UNCONFIGURED, CONFIGURED } // storage State public state = State.UNCONFIGURED; // modifier modifier onlyInState(State _state) { require(state == _state, "Invalid state"); _; } }
//Made with Student Coin Terminal //SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; interface IWhitelist { function use(uint256) external returns (bool); }
//Made with Student Coin Terminal //SPDX-License-Identifier: NONE pragma solidity ^0.8.0; import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol"; import {Configurable} from "../utils/Configurable.sol"; import {ITokenERC20} from "../interfaces/ITokenERC20.sol"; import {IWhitelist} from "../interfaces/IWhitelist.sol"; contract Sale is AccessControl, Configurable { // stage struct Stage { uint256 supply; // stage supply uint256 rate; // tokens per wei (example: value 20 -> for 1 ETH gives 20 tokens) uint256 minAlloc; // minimum wei invested uint256 openingTime; uint256 closingTime; } struct Phase { Stage stage; uint256 soldTokens; uint256 weiRaised; } // storage Phase[] public stages; ITokenERC20 public erc20; IWhitelist public whitelist; address payable public immutable wallet; uint256 public immutable supply; // sale supply uint256 public immutable hardCap; // ether value of sale supply uint256 public weiRaised; // events event TokenPurchase( address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount ); event TokenBurn(uint256 amount); // basic errors error SaleNotActive(uint256 timestamp); error SaleNotFinished(uint256 timestamp); error NoTokensLeft(); // sale errors error InvalidConfig(uint256 supply, uint256 cap, address wallet, uint256 stagesCount); error SupplyMismatch(uint256 supply, uint256 totalSupply); error ValueMismatch(uint256 hardCap, uint256 totalValue); // stage errors error InvalidStageConfig(uint256 rate, uint8 i); error StartDateInThePast(uint256 start, uint256 now_, uint8 i); error StartDateNotBeforeEndDate(uint256 start, uint256 end, uint8 i); error SupplySmallerThanRate(uint256 supply, uint256 rate, uint8 i); // configuration errors error SupplyConfigurationMishmatch(uint256 saleSupply, uint256 supply); error BalanceNotEqualSupply(uint256 balance, uint256 supply); // buy errors error InvalidReceiver(address receiver); error NotEnoughBigInvestment(uint256 amount, uint256 minimum); error HardCapExceeded(uint256 amount, uint256 hardCap); error StageSupplyDrained(uint256 amount, uint256 supply); error WhitelistNotPassed(address member, uint256 weiAmount); // modifiers modifier onlyWhenActive() { getCurrentStage(); _; } modifier onlyWhenFinished() { uint256 timestamp = block.timestamp; if (timestamp < closingTime()) { revert SaleNotFinished(timestamp); } _; } constructor(bytes memory arguments_) { // tx members address sender = tx.origin; // decode (uint256 supply_, uint256 hardCap_, address wallet_, Stage[] memory stages_) = abi.decode( arguments_, (uint256, uint256, address, Stage[]) ); // sale config uint256 stagesCount = stages_.length; if ( supply_ == 0 || hardCap_ == 0 || wallet_ == address(0x0) || stagesCount == 0 || stagesCount > 16 ) { revert InvalidConfig(supply_, hardCap_, wallet_, stages_.length); } uint256 totalSupply; uint256 totalValue; uint256 lastClosingTime = block.timestamp; for (uint8 i = 0; i < stages_.length; i++) { Stage memory stage = stages_[i]; // stage config if (stage.rate == 0) { revert InvalidStageConfig(stage.rate, i); } // stage opening if (stage.openingTime < lastClosingTime) { revert StartDateInThePast(stage.openingTime, lastClosingTime, i); } // stage closing if (stage.openingTime >= stage.closingTime) { revert StartDateNotBeforeEndDate(stage.openingTime, stage.closingTime, i); } // requirement of OpenZeppelin crowdsale from V2 // FIXME: to discuss if support for other rates is needed // 1 token (decimals 0) -> MAX 1 wei // 1 token (decimals 1) -> MAX 10 wei // 1 token (decimals 5) -> MAX 100 000 wei // 1 MLN token (decimals 0) -> MAX 1 MLN wei if (stage.supply < stage.rate) { revert SupplySmallerThanRate(stage.supply, stage.rate, i); } // increment counters totalValue += stage.supply / stage.rate; lastClosingTime = stage.closingTime; totalSupply += stage.supply; // storage stages.push(Phase(stage, 0, 0)); } // sum of stages supply if (supply_ != totalSupply) { revert SupplyMismatch(supply_, totalSupply); } // sum of stages hard caps if (hardCap_ != totalValue) { revert ValueMismatch(hardCap_, totalValue); } // save storage supply = supply_; hardCap = hardCap_; wallet = payable(wallet_); // base role _setupRole(DEFAULT_ADMIN_ROLE, sender); } function configure(address erc20_, address whitelist_) external onlyInState(State.UNCONFIGURED) onlyRole(DEFAULT_ADMIN_ROLE) { // storage erc20 = ITokenERC20(erc20_); whitelist = IWhitelist(whitelist_); // check supply vs params uint256 saleSupply = erc20.saleSupply(); if (saleSupply != supply) { revert SupplyConfigurationMishmatch(saleSupply, supply); } // check configuration vs balance uint256 balance = erc20.balanceOf(address(this)); if (saleSupply != balance) { revert BalanceNotEqualSupply(balance, saleSupply); } // state state = State.CONFIGURED; } function buyTokens(address _beneficiary) external payable onlyInState(State.CONFIGURED) onlyWhenActive { // current state uint8 currentStage = getCurrentStage(); Phase memory phase = stages[currentStage]; // tx members uint256 weiAmount = msg.value; // validate receiver if (_beneficiary == address(0)) { revert InvalidReceiver(_beneficiary); } // check min invesment if (weiAmount < phase.stage.minAlloc) { revert NotEnoughBigInvestment(weiAmount, phase.stage.minAlloc); } // check hardcap uint256 raised = weiRaised + weiAmount; if (raised > hardCap) { revert HardCapExceeded(raised, hardCap); } // calculate token amount to be sold uint256 tokenAmount = weiAmount * phase.stage.rate; // check supply uint256 sold = phase.soldTokens + tokenAmount; if (sold > phase.stage.supply) { revert StageSupplyDrained(sold, phase.stage.supply); } // use whitelist if (address(whitelist) != address(0x0)) { bool success = whitelist.use(weiAmount); if (!success) { revert WhitelistNotPassed(msg.sender, weiAmount); } } // update state weiRaised = raised; stages[currentStage].weiRaised += weiAmount; stages[currentStage].soldTokens = sold; // store profits wallet.transfer(weiAmount); // send tokens erc20.transfer(_beneficiary, tokenAmount); emit TokenPurchase(msg.sender, _beneficiary, weiAmount, tokenAmount); } receive() external payable { this.buyTokens(msg.sender); } function stageCount() external view returns (uint256) { // frontend view return stages.length; } function rate() external view returns (uint256) { // rate from current stage return stages[getCurrentStage()].stage.rate; } function openingTime() external view returns (uint256) { // opening time of first stage return stages[0].stage.openingTime; } function closingTime() public view returns (uint256) { // closing time of last stage return stages[getLastStage()].stage.closingTime; } function tokensLeft() public view onlyInState(State.CONFIGURED) returns (uint256) { // tokens left on sale contract return erc20.balanceOf(address(this)); } function getLastStage() internal view returns (uint8) { return uint8(stages.length - 1); } function getCurrentStage() public view returns (uint8) { // tx.members uint256 timestamp = block.timestamp; // return active stage for (uint8 i = 0; i < stages.length; i++) { if (stages[i].stage.openingTime <= timestamp && timestamp <= stages[i].stage.closingTime) { return i; } } // revert if no active stage revert SaleNotActive(timestamp); } function hasClosed() external view returns (bool) { // OpenZeppelin standard method return block.timestamp > closingTime(); } function finalize() external onlyInState(State.CONFIGURED) onlyWhenFinished { // check tokens left uint256 tokenAmount = tokensLeft(); // revert if no tokens left if (tokenAmount == 0) { revert NoTokensLeft(); } // burn remaining tokens erc20.burn(tokenAmount); emit TokenBurn(tokenAmount); } }
//Made with Student Coin Terminal //SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {IToken} from "./IToken.sol"; interface ITokenERC20 is IERC20, IToken {}
//Made with Student Coin Terminal //SPDX-License-Identifier: NONE pragma solidity ^0.8.0; import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol"; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {Configurable} from "../utils/Configurable.sol"; import {ITokenERC20} from "../interfaces/ITokenERC20.sol"; contract Vesting is AccessControl, Configurable { // structs struct Shareholder { address account; uint8 shares; } struct Member { Shareholder shareholder; uint256 collected; uint8 lastCheckpoint; } // storage ITokenERC20 public erc20; mapping(address => Member) public members; // config uint256 public immutable supply; uint8 public immutable duration; // 1-60 uint256 public startTime; // events event Collected(address sender, uint256 amount, uint8 lastCheckpoint, uint8 newCheckpoint); // errors error InvalidConfig(uint256 supply_, uint8 duration_); error SharesNotInTheRange(address account, uint256 shares); error SharesNotSumTo100(uint256 total); error InvalidMember(address member); error NothingToCollect(address member, uint8 collected, uint8 checkpoint); error SupplyMismatch(uint256 balance, uint256 declared); error ConfigurationBalanceMishmatch(uint256 amount, uint256 balance); // modifiers modifier onlyMember() { if (members[msg.sender].shareholder.shares == 0) { revert InvalidMember(msg.sender); } _; } constructor(bytes memory arguments_) { // tx members address sender = tx.origin; (uint256 supply_, uint8 duration_, Shareholder[] memory shareholders_) = abi.decode( arguments_, (uint256, uint8, Shareholder[]) ); // check supply and duration if (supply_ == 0 || duration_ == 0 || duration_ > 60) { revert InvalidConfig(supply_, duration_); } // check members uint8 totalShares = 0; for (uint8 i = 0; i < shareholders_.length; i++) { Member memory member = Member(shareholders_[i], 0, 0); uint8 shares = member.shareholder.shares; address account = member.shareholder.account; // check address and individual shares if (account == address(0x0)) { revert InvalidMember(account); } if (shares == 0 || shares > 100) { revert SharesNotInTheRange(account, shares); } members[account] = member; totalShares += shares; } // check sum of shares if (totalShares != 100) { revert SharesNotSumTo100(totalShares); } // storage supply = supply_; duration = duration_; // base role _setupRole(DEFAULT_ADMIN_ROLE, sender); } function configure(address erc20_) external onlyInState(State.UNCONFIGURED) onlyRole(DEFAULT_ADMIN_ROLE) { // tx.members startTime = block.timestamp; // token erc20 = ITokenERC20(erc20_); // check balance vs supply uint256 balance = erc20.balanceOf(address(this)); if (balance != supply) { revert SupplyMismatch(balance, supply); } // check configuration vs balance uint256 vestingSupply = erc20.vestingSupply(); if (vestingSupply != balance) { revert ConfigurationBalanceMishmatch(vestingSupply, balance); } // state state = State.CONFIGURED; } function endTime() public view onlyInState(State.CONFIGURED) returns (uint256) { // start time + X months (where X is duration) return startTime + (30 days * duration); } function currentCheckpoint() public view onlyInState(State.CONFIGURED) returns (uint8) { // not started case -> 0 if (startTime > block.timestamp) return 0; // checkpoint = (now - start time) / month uint256 checkpoint = (block.timestamp - startTime) / 30 days; // checkpoint or cap to duration -> 0 ~ duration return uint8(Math.min(checkpoint, uint256(duration))); } function collect() external onlyInState(State.CONFIGURED) onlyMember { // tx.members address sender = msg.sender; // checkpoints uint8 checkpoint = currentCheckpoint(); uint8 lastCheckpoint = members[sender].lastCheckpoint; // revert if nothing to collect if (checkpoint <= lastCheckpoint) { revert NothingToCollect(sender, lastCheckpoint, checkpoint); } uint256 amount; if (checkpoint == duration) { // calculate remaining amount amount = (supply * members[sender].shareholder.shares) / 100 - members[sender].collected; } else { // current checkpoint - last checkpoint uint8 checkpointsToCollect = checkpoint - lastCheckpoint; // single batch amount uint256 partialSupply = supply / duration; // shares of single batch uint256 singleCheckpointAmount = (partialSupply * members[sender].shareholder.shares) / 100; // amount based on shares and checkpoints amount = checkpointsToCollect * singleCheckpointAmount; } // update state and transfer members[sender].lastCheckpoint = checkpoint; members[sender].collected += amount; erc20.transfer(sender, amount); // events emit Collected(sender, amount, lastCheckpoint, checkpoint); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a / b + (a % b == 0 ? 0 : 1); } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "london", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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- No Contract Security Audit Submitted- Submit Audit Here
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utability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"internalContracts","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"saleAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"saleSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tax","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vestingAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vestingSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000001654616b61736879204e696e6a612050726f746f636f6c000000000000000000000000000000000000000000000000000000000000000000000000000000000003544e500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000197da0a2d03b9094782c00000000000000000000000000000000000000000000197da0a2d03b9094782c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : name_ (string): Takashy Ninja Protocol
Arg [1] : symbol_ (string): TNP
Arg [2] : arguments_ (bytes): 0x00000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000197da0a2d03b9094782c00000000000000000000000000000000000000000000197da0a2d03b9094782c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-----Encoded View---------------
18 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000016
Arg [4] : 54616b61736879204e696e6a612050726f746f636f6c00000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 544e500000000000000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [9] : 0000000000000000000000000000000000000000197da0a2d03b9094782c0000
Arg [10] : 0000000000000000000000000000000000000000197da0a2d03b9094782c0000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [17] : 0000000000000000000000000000000000000000000000000000000000000000
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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.