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Latest 25 from a total of 2,250 transactions
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Claim | 21088976 | 13 hrs ago | IN | 0 ETH | 0.00115309 | ||||
Claim | 21081870 | 37 hrs ago | IN | 0 ETH | 0.00145705 | ||||
Unpause | 21078320 | 2 days ago | IN | 0 ETH | 0.00024107 | ||||
Increment Term I... | 21078319 | 2 days ago | IN | 0 ETH | 0.00025712 | ||||
Withdraw Token | 21056829 | 5 days ago | IN | 0 ETH | 0.00021854 | ||||
Pause | 21056828 | 5 days ago | IN | 0 ETH | 0.00028153 | ||||
Claim | 21054335 | 5 days ago | IN | 0 ETH | 0.00068733 | ||||
Claim | 21040833 | 7 days ago | IN | 0 ETH | 0.00117223 | ||||
Unpause | 21028150 | 9 days ago | IN | 0 ETH | 0.00024903 | ||||
Increment Term I... | 21028149 | 9 days ago | IN | 0 ETH | 0.00026312 | ||||
Withdraw Token | 21006656 | 12 days ago | IN | 0 ETH | 0.00034674 | ||||
Pause | 21006655 | 12 days ago | IN | 0 ETH | 0.00043815 | ||||
Claim | 21004592 | 12 days ago | IN | 0 ETH | 0.00121731 | ||||
Claim | 20982597 | 15 days ago | IN | 0 ETH | 0.00185023 | ||||
Unpause | 20977986 | 16 days ago | IN | 0 ETH | 0.00041676 | ||||
Increment Term I... | 20977985 | 16 days ago | IN | 0 ETH | 0.00047302 | ||||
Withdraw Token | 20956516 | 19 days ago | IN | 0 ETH | 0.00040863 | ||||
Pause | 20956515 | 19 days ago | IN | 0 ETH | 0.00050209 | ||||
Claim | 20954688 | 19 days ago | IN | 0 ETH | 0.001333 | ||||
Claim | 20932118 | 22 days ago | IN | 0 ETH | 0.00183499 | ||||
Unpause | 20927898 | 23 days ago | IN | 0 ETH | 0.00032524 | ||||
Increment Term I... | 20927897 | 23 days ago | IN | 0 ETH | 0.0003787 | ||||
Withdraw Token | 20906375 | 26 days ago | IN | 0 ETH | 0.0002929 | ||||
Pause | 20906373 | 26 days ago | IN | 0 ETH | 0.00039966 | ||||
Claim | 20896488 | 27 days ago | IN | 0 ETH | 0.00079497 |
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Contract Name:
SkebClaim
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 1000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../ISkebStaking.sol"; import "../util/TGPausable.sol"; import "../util/VerifySignature.sol"; import "./ISkebClaim.sol"; contract SkebClaim is TGPausable, ReentrancyGuard, VerifySignature, ISkebClaim { mapping(address => uint256) public latestUserTermId; uint256 public currentTermId = 1; IERC20 public skebcoin; ISkebStaking public staking; bytes32 public constant SIGNER_ROLE = keccak256("Signer"); constructor(IERC20 _skebcoin, ISkebStaking _staking) { _setupRole(DEFAULT_ADMIN_ROLE, _msgSender()); skebcoin = _skebcoin; staking = _staking; skebcoin.approve(address(staking), 10**28); } function claim( address signer, address user, uint256 amount, uint256 expiry, bytes memory sig ) external override nonReentrant whenNotPaused { require(user == msg.sender, "Error: Invalid sender"); require(block.timestamp < expiry, "Error: Signature already expired"); require(isSigner(signer), "Error: Invalid Signer"); require( currentClaimableId() > latestUserTermId[user], "Invalid term Id" ); require( validateSignature( signer, user, amount, expiry, sig, currentClaimableId() ), "Error: Invalid Signature" ); staking.stakeFor(user, uint128(amount)); latestUserTermId[user] = currentClaimableId(); } function incrementTermId() external override onlyAdmin { currentTermId++; } function changeTermId(uint256 newTermId) external override onlyAdmin { require(newTermId != 0, "Error: termid != 0"); currentTermId = newTermId; } function currentClaimableId() public view returns (uint256) { return currentTermId - 1; } function grantSigner(address newSigner) external override onlyAdmin { grantRole(SIGNER_ROLE, newSigner); } function revokeSigner(address oldSigner) external override onlyAdmin { _revokeRole(SIGNER_ROLE, oldSigner); } function isSigner(address signer) public view override returns (bool) { return hasRole(SIGNER_ROLE, signer); } function getTokenBalance() external view override returns (uint256) { return skebcoin.balanceOf(address(this)); } function withdrawToken(uint256 amount) external override onlyAdmin { require( skebcoin.transfer(msg.sender, amount), "Error: Withdrawal Failed" ); } function createClaimMessage( address user, uint256 amount, uint256 expiry, uint256 termId ) public pure override returns (bytes32) { return keccak256(abi.encodePacked(user, amount, expiry, termId)); } function validateSignature( address signer, address user, uint256 amount, uint256 expiry, bytes memory sig, uint256 termId ) public pure override returns (bool) { bytes32 message = createClaimMessage(user, amount, expiry, termId); return verify(signer, message, sig); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; interface ISkebStaking { function stake(uint128 _amount) external; function unstake(uint256 _stakeIndex) external; function stakeFor(address _user, uint128 _amount) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "@openzeppelin/contracts/security/Pausable.sol"; import "./TGAccessControl.sol"; contract TGPausable is Pausable, TGAccessControl { function pause() external onlyAdmin { _pause(); } function unpause() external onlyAdmin { _unpause(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* Signature Verification How to Sign and Verify # Signing 1. Create message to sign 2. Hash the message 3. Sign the hash (off chain, keep your private key secret) # Verify 1. Recreate hash from the original message 2. Recover signer from signature and hash 3. Compare recovered signer to claimed signer */ contract VerifySignature { /* 3. Sign message hash # using browser account = "copy paste account of signer here" ethereum.request({ method: "personal_sign", params: [account, hash]}).then(console.log) # using web3 web3.personal.sign(hash, web3.eth.defaultAccount, console.log) Signature will be different for different accounts 0x993dab3dd91f5c6dc28e17439be475478f5635c92a56 e17e82349d3fb2f166196f466c0b4e0c146f285204f0dcb13e5ae67bc33f4b888ec32dfe0a063e8f3f781b */ function getEthSignedMessageHash(bytes32 _messageHash) public pure returns (bytes32) { /* Signature is produced by signing a keccak256 hash with the following format: "\x19Ethereum Signed Message\n" + len(msg) + msg */ return keccak256( abi.encodePacked( "\x19Ethereum Signed Message:\n32", _messageHash ) ); } /* 4. Verify signature signer = 0xB273216C05A8c0D4F0a4Dd0d7Bae1D2EfFE636dd to = 0x14723A09ACff6D2A60DcdF7aA4AFf308FDDC160C amount = 123 message = "coffee and donuts" nonce = 1 signature = 0x993dab3dd91f5c6dc28e17439be475478f5635c92a56e17e82349d3fb2f166196f46 6c0b4e0c146f285204f0dcb13e5ae67bc33f4b888ec32dfe0a063e8f3f781b */ function verify( address _signer, bytes32 messageHash, bytes memory signature ) public pure returns (bool) { bytes32 ethSignedMessageHash = getEthSignedMessageHash(messageHash); return recoverSigner(ethSignedMessageHash, signature) == _signer; } function recoverSigner( bytes32 _ethSignedMessageHash, bytes memory _signature ) public pure returns (address) { (bytes32 r, bytes32 s, uint8 v) = splitSignature(_signature); return ecrecover(_ethSignedMessageHash, v, r, s); } function splitSignature(bytes memory sig) public pure returns ( bytes32 r, bytes32 s, uint8 v ) { require(sig.length == 65, "invalid signature length"); assembly { /* First 32 bytes stores the length of the signature add(sig, 32) = pointer of sig + 32 effectively, skips first 32 bytes of signature mload(p) loads next 32 bytes starting at the memory address p into memory */ // first 32 bytes, after the length prefix r := mload(add(sig, 32)) // second 32 bytes s := mload(add(sig, 64)) // final byte (first byte of the next 32 bytes) v := byte(0, mload(add(sig, 96))) } // implicitly return (r, s, v) } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; interface ISkebClaim { function claim( address signer, address user, uint256 amount, uint256 expiry, bytes memory sig ) external; function grantSigner(address newSigner) external; function revokeSigner(address oldSigner) external; function isSigner(address signer) external view returns (bool); function getTokenBalance() external view returns (uint256); function withdrawToken(uint256 amount) external; function incrementTermId() external; function changeTermId(uint256 newTermId) external; function createClaimMessage( address user, uint256 amount, uint256 expiry, uint256 termId ) external pure returns (bytes32); function validateSignature( address signer, address user, uint256 amount, uint256 expiry, bytes memory sig, uint256 termId ) external pure returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./ITGAccessControl.sol"; import "@openzeppelin/contracts/access/AccessControl.sol"; /** * @dev Access control contract module * inherited {AccessControl} from OpenZeppelin. */ abstract contract TGAccessControl is AccessControl, ITGAccessControl { // --- modifier --- /** * @dev Modifier that checks that an account has admin role. Reverts * with a standardized message including the required DEFAULT_ADMIN_ROLE role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role 0x00$/ */ modifier onlyAdmin() { _checkRole(DEFAULT_ADMIN_ROLE, _msgSender()); _; } // --- public function --- /** * @dev Returns `true` if `_account` has admin role. */ function hasAdmin(address _account) public view virtual override returns (bool) { return hasRole(DEFAULT_ADMIN_ROLE, _account); } /** * @dev Grants admin role to `_account`. * * If `account` has not been already granted admin role, emits a {RoleGranted} event. * * Requirements: * - the caller must have admin role. */ function grantAdmin(address _account) public virtual override onlyAdmin { require( _account != address(0), "TGAccessControl: account is the zero address" ); _grantAdmin(_account); } /** * @dev Revokes admin role from `_account`. * * If `account` had been already granted admin role, emits a {RoleRevoked} event. * * Requirements: * - the caller must have admi rolen, not `_account` (cannot revoke from self). */ function revokeAdmin(address _account) public virtual override onlyAdmin { require( _account != _msgSender(), "TGAccessControl: cannot revoke from self" ); _revokeAdmin(_account); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(ITGAccessControl).interfaceId || super.supportsInterface(interfaceId); } // --- internal function --- /** * @dev Grants admin role to `_account`. * * Internal function without access restriction. * * If `account` has not been already granted admin role, emits a {RoleGranted} event. */ function _grantAdmin(address _account) internal virtual { _grantRole(DEFAULT_ADMIN_ROLE, _account); } /** * @dev Revokes admin role from `_account`. * * Internal function without access restriction. * * If `account` had been already granted admin from, emits a {RoleRevoked} event. */ function _revokeAdmin(address _account) internal virtual { _revokeRole(DEFAULT_ADMIN_ROLE, _account); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev External interface of TGAccessControl declared to support ERC165 detection. */ interface ITGAccessControl { /** * @dev Returns `true` if `_account` has admin. */ function hasAdmin(address _account) external view returns (bool); /** * @dev Grants admin role to `_account`. * * If `account` has not been already granted admin role, emits a {RoleGranted} event. * * Requirements: * - the caller must have admin role. */ function grantAdmin(address _account) external; /** * @dev Revokes admin role from `_account`. * * If `account` had been already granted admin role, emits a {RoleRevoked} event. * * Requirements: * - the caller must have admin role, not `_account` (cannot revoke from self). */ function revokeAdmin(address _account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ 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. * * May emit a {RoleRevoked} event. */ 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`. * * May emit a {RoleRevoked} event. */ 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. * * May emit a {RoleGranted} event. * * [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. * * May emit a {RoleGranted} event. */ 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. * * May emit a {RoleRevoked} event. */ 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 v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/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 (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @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); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
{ "optimizer": { "enabled": true, "runs": 1000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract IERC20","name":"_skebcoin","type":"address"},{"internalType":"contract ISkebStaking","name":"_staking","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SIGNER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"newTermId","type":"uint256"}],"name":"changeTermId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"signer","type":"address"},{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"bytes","name":"sig","type":"bytes"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint256","name":"termId","type":"uint256"}],"name":"createClaimMessage","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"currentClaimableId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentTermId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_messageHash","type":"bytes32"}],"name":"getEthSignedMessageHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTokenBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"grantAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newSigner","type":"address"}],"name":"grantSigner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"hasAdmin","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","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":[],"name":"incrementTermId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"signer","type":"address"}],"name":"isSigner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"latestUserTermId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_ethSignedMessageHash","type":"bytes32"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"recoverSigner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"revokeAdmin","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":[{"internalType":"address","name":"oldSigner","type":"address"}],"name":"revokeSigner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"skebcoin","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"sig","type":"bytes"}],"name":"splitSignature","outputs":[{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"},{"internalType":"uint8","name":"v","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"staking","outputs":[{"internalType":"contract ISkebStaking","name":"","type":"address"}],"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":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"signer","type":"address"},{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"bytes","name":"sig","type":"bytes"},{"internalType":"uint256","name":"termId","type":"uint256"}],"name":"validateSignature","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"_signer","type":"address"},{"internalType":"bytes32","name":"messageHash","type":"bytes32"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"verify","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawToken","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000006d614686550b9e1c1df4b2cd8f91c9d4df66c8100000000000000000000000000d30a2a29fdbd4f1683769cdc3ddb374562adcde
-----Decoded View---------------
Arg [0] : _skebcoin (address): 0x6D614686550B9E1c1DF4b2cD8f91C9D4df66C810
Arg [1] : _staking (address): 0x0d30A2A29FdbD4F1683769cDC3DDB374562aDcDe
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000006d614686550b9e1c1df4b2cd8f91c9d4df66c810
Arg [1] : 0000000000000000000000000d30a2a29fdbd4f1683769cdc3ddb374562adcde
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $0.000525 | 28,197.5678 | $14.81 |
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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.