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Contract Name:
PerpRewardVesting
Compiler Version
v0.6.9+commit.3e3065ac
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; pragma experimental ABIEncoderV2; import { IERC20 } from "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol"; import { SafeMath } from "@openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol"; import { MerkleRedeemUpgradeSafe } from "./Balancer/MerkleRedeemUpgradeSafe.sol"; import { Decimal } from "../utils/Decimal.sol"; import { DecimalERC20 } from "../utils/DecimalERC20.sol"; import { BlockContext } from "../utils/BlockContext.sol"; contract PerpRewardVesting is MerkleRedeemUpgradeSafe, BlockContext { using Decimal for Decimal.decimal; using SafeMath for uint256; //**********************************************************// // The below state variables can not change the order // //**********************************************************// // {weekMerkleRootsIndex: timestamp} mapping(uint256 => uint256) public merkleRootTimestampMap; // array of weekMerkleRootsIndex uint256[] public merkleRootIndexes; uint256 public vestingPeriod; //**********************************************************// // The above state variables can not change the order // //**********************************************************// //◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤ add state variables below ◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤// //◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣ add state variable, ables above ◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣// uint256[50] private __gap; function initialize(IERC20 _token, uint256 _vestingPeriod) external initializer { require(address(_token) != address(0), "Invalid input"); __MerkleRedeem_init(_token); vestingPeriod = _vestingPeriod; } function claimWeeks(address _account, Claim[] memory _claims) public virtual override { for (uint256 i; i < _claims.length; i++) { claimWeek(_account, _claims[i].week, _claims[i].balance, _claims[i].merkleProof); } } function claimWeek( address _account, uint256 _week, uint256 _claimedBalance, bytes32[] memory _merkleProof ) public virtual override { // // +----------------+ // | vesting period | // +----------------+----------+ // | vesting period | | // ---------+------+---+-----+------+---+ // | | | now | // | week2 | merkleRootTimestampMap[week1] // | | // week1 merkleRootTimestampMap[week1] // // week1 -> claimable // week2 -> non-claimable // require( _blockTimestamp() >= merkleRootTimestampMap[_week] && merkleRootTimestampMap[_week] > 0, "Invalid claim" ); super.claimWeek(_account, _week, _claimedBalance, _merkleProof); } function seedAllocations( uint256 _week, bytes32 _merkleRoot, uint256 _totalAllocation ) public override onlyOwner { super.seedAllocations(_week, _merkleRoot, _totalAllocation); merkleRootTimestampMap[_week] = _blockTimestamp().add(vestingPeriod); merkleRootIndexes.push(_week); } // // INTERNAL // function getLengthOfMerkleRoots() external view returns (uint256) { return merkleRootIndexes.length; } }
// source: https://github.com/balancer-labs/erc20-redeemable/blob/master/merkle/contracts/MerkleRedeem.sol // changes: // 1. add license and update solidity version to 0.6.9 // 2. make it upgradeable // 3. add virtual modifier in claim functions // SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; pragma experimental ABIEncoderV2; import { MerkleProof } from "@openzeppelin/contracts-ethereum-package/contracts/cryptography/MerkleProof.sol"; import { IERC20 } from "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol"; import { PerpFiOwnableUpgrade } from "../../utils/PerpFiOwnableUpgrade.sol"; contract MerkleRedeemUpgradeSafe is PerpFiOwnableUpgrade { event Claimed(address _claimant, uint256 _balance); //**********************************************************// // The below state variables can not change the order // //**********************************************************// // Recorded weeks mapping(uint256 => bytes32) public weekMerkleRoots; mapping(uint256 => mapping(address => bool)) public claimed; IERC20 public token; //**********************************************************// // The above state variables can not change the order // //**********************************************************// //◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤ add state variables below ◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤// //◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣ add state variables above ◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣// uint256[50] private __gap; // // FUNCTIONS // function __MerkleRedeem_init(IERC20 _token) internal initializer { __Ownable_init(); __MerkleRedeem_init_unchained(_token); } function __MerkleRedeem_init_unchained(IERC20 _token) internal initializer { token = _token; } function disburse(address _liquidityProvider, uint256 _balance) private { if (_balance > 0) { emit Claimed(_liquidityProvider, _balance); require(token.transfer(_liquidityProvider, _balance), "ERR_TRANSFER_FAILED"); } } function claimWeek( address _liquidityProvider, uint256 _week, uint256 _claimedBalance, bytes32[] memory _merkleProof ) public virtual { require(!claimed[_week][_liquidityProvider], "Claimed already"); require(verifyClaim(_liquidityProvider, _week, _claimedBalance, _merkleProof), "Incorrect merkle proof"); claimed[_week][_liquidityProvider] = true; disburse(_liquidityProvider, _claimedBalance); } struct Claim { uint256 week; uint256 balance; bytes32[] merkleProof; } function claimWeeks(address _liquidityProvider, Claim[] memory claims) public virtual { uint256 totalBalance = 0; Claim memory claim; for (uint256 i = 0; i < claims.length; i++) { claim = claims[i]; require(!claimed[claim.week][_liquidityProvider], "Claimed already"); require( verifyClaim(_liquidityProvider, claim.week, claim.balance, claim.merkleProof), "Incorrect merkle proof" ); totalBalance += claim.balance; claimed[claim.week][_liquidityProvider] = true; } disburse(_liquidityProvider, totalBalance); } function claimStatus( address _liquidityProvider, uint256 _begin, uint256 _end ) external view returns (bool[] memory) { uint256 size = 1 + _end - _begin; bool[] memory arr = new bool[](size); for (uint256 i = 0; i < size; i++) { arr[i] = claimed[_begin + i][_liquidityProvider]; } return arr; } function merkleRoots(uint256 _begin, uint256 _end) external view returns (bytes32[] memory) { uint256 size = 1 + _end - _begin; bytes32[] memory arr = new bytes32[](size); for (uint256 i = 0; i < size; i++) { arr[i] = weekMerkleRoots[_begin + i]; } return arr; } function verifyClaim( address _liquidityProvider, uint256 _week, uint256 _claimedBalance, bytes32[] memory _merkleProof ) public view virtual returns (bool valid) { bytes32 leaf = keccak256(abi.encodePacked(_liquidityProvider, _claimedBalance)); return MerkleProof.verify(_merkleProof, weekMerkleRoots[_week], leaf); } function seedAllocations( uint256 _week, bytes32 _merkleRoot, uint256 _totalAllocation ) public virtual { require(weekMerkleRoots[_week] == bytes32(0), "cannot rewrite merkle root"); weekMerkleRoots[_week] = _merkleRoot; require(token.transferFrom(msg.sender, address(this), _totalAllocation), "ERR_TRANSFER_FAILED"); } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; import { ContextUpgradeSafe } from "@openzeppelin/contracts-ethereum-package/contracts/GSN/Context.sol"; // copy from openzeppelin Ownable, only modify how the owner transfer /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract PerpFiOwnableUpgrade is ContextUpgradeSafe { address private _owner; address private _candidate; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } function candidate() public view returns (address) { return _candidate; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "PerpFiOwnableUpgrade: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Set ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function setOwner(address newOwner) public onlyOwner { require(newOwner != address(0), "PerpFiOwnableUpgrade: zero address"); require(newOwner != _owner, "PerpFiOwnableUpgrade: same as original"); require(newOwner != _candidate, "PerpFiOwnableUpgrade: same as candidate"); _candidate = newOwner; } /** * @dev Transfers ownership of the contract to a new account (`_candidate`). * Can only be called by the new owner. */ function updateOwner() public { require(_candidate != address(0), "PerpFiOwnableUpgrade: candidate is zero address"); require(_candidate == _msgSender(), "PerpFiOwnableUpgrade: not the new owner"); emit OwnershipTransferred(_owner, _candidate); _owner = _candidate; _candidate = address(0); } uint256[50] private __gap; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; import { SafeMath } from "@openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol"; import { DecimalMath } from "./DecimalMath.sol"; library Decimal { using DecimalMath for uint256; using SafeMath for uint256; struct decimal { uint256 d; } function zero() internal pure returns (decimal memory) { return decimal(0); } function one() internal pure returns (decimal memory) { return decimal(DecimalMath.unit(18)); } function toUint(decimal memory x) internal pure returns (uint256) { return x.d; } function modD(decimal memory x, decimal memory y) internal pure returns (decimal memory) { return decimal(x.d.mul(DecimalMath.unit(18)) % y.d); } function cmp(decimal memory x, decimal memory y) internal pure returns (int8) { if (x.d > y.d) { return 1; } else if (x.d < y.d) { return -1; } return 0; } /// @dev add two decimals function addD(decimal memory x, decimal memory y) internal pure returns (decimal memory) { decimal memory t; t.d = x.d.add(y.d); return t; } /// @dev subtract two decimals function subD(decimal memory x, decimal memory y) internal pure returns (decimal memory) { decimal memory t; t.d = x.d.sub(y.d); return t; } /// @dev multiple two decimals function mulD(decimal memory x, decimal memory y) internal pure returns (decimal memory) { decimal memory t; t.d = x.d.muld(y.d); return t; } /// @dev multiple a decimal by a uint256 function mulScalar(decimal memory x, uint256 y) internal pure returns (decimal memory) { decimal memory t; t.d = x.d.mul(y); return t; } /// @dev divide two decimals function divD(decimal memory x, decimal memory y) internal pure returns (decimal memory) { decimal memory t; t.d = x.d.divd(y.d); return t; } /// @dev divide a decimal by a uint256 function divScalar(decimal memory x, uint256 y) internal pure returns (decimal memory) { decimal memory t; t.d = x.d.div(y); return t; } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; import { SafeMath } from "@openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol"; /// @dev Implements simple fixed point math add, sub, mul and div operations. /// @author Alberto Cuesta Cañada library DecimalMath { using SafeMath for uint256; /// @dev Returns 1 in the fixed point representation, with `decimals` decimals. function unit(uint8 decimals) internal pure returns (uint256) { return 10**uint256(decimals); } /// @dev Adds x and y, assuming they are both fixed point with 18 decimals. function addd(uint256 x, uint256 y) internal pure returns (uint256) { return x.add(y); } /// @dev Subtracts y from x, assuming they are both fixed point with 18 decimals. function subd(uint256 x, uint256 y) internal pure returns (uint256) { return x.sub(y); } /// @dev Multiplies x and y, assuming they are both fixed point with 18 digits. function muld(uint256 x, uint256 y) internal pure returns (uint256) { return muld(x, y, 18); } /// @dev Multiplies x and y, assuming they are both fixed point with `decimals` digits. function muld( uint256 x, uint256 y, uint8 decimals ) internal pure returns (uint256) { return x.mul(y).div(unit(decimals)); } /// @dev Divides x between y, assuming they are both fixed point with 18 digits. function divd(uint256 x, uint256 y) internal pure returns (uint256) { return divd(x, y, 18); } /// @dev Divides x between y, assuming they are both fixed point with `decimals` digits. function divd( uint256 x, uint256 y, uint8 decimals ) internal pure returns (uint256) { return x.mul(unit(decimals)).div(y); } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; import { IERC20 } from "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol"; import { SafeMath } from "@openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol"; import { Decimal } from "./Decimal.sol"; abstract contract DecimalERC20 { using SafeMath for uint256; using Decimal for Decimal.decimal; mapping(address => uint256) private decimalMap; //◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤ add state variables below ◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤// //◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣ add state variables above ◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣// uint256[50] private __gap; // // INTERNAL functions // // CAUTION: do not input _from == _to s.t. this function will always fail function _transfer( IERC20 _token, address _to, Decimal.decimal memory _value ) internal { _updateDecimal(address(_token)); Decimal.decimal memory balanceBefore = _balanceOf(_token, _to); uint256 roundedDownValue = _toUint(_token, _value); // solhint-disable avoid-low-level-calls (bool success, bytes memory data) = address(_token).call(abi.encodeWithSelector(_token.transfer.selector, _to, roundedDownValue)); require(success && (data.length == 0 || abi.decode(data, (bool))), "DecimalERC20: transfer failed"); _validateBalance(_token, _to, roundedDownValue, balanceBefore); } function _transferFrom( IERC20 _token, address _from, address _to, Decimal.decimal memory _value ) internal { _updateDecimal(address(_token)); Decimal.decimal memory balanceBefore = _balanceOf(_token, _to); uint256 roundedDownValue = _toUint(_token, _value); // solhint-disable avoid-low-level-calls (bool success, bytes memory data) = address(_token).call(abi.encodeWithSelector(_token.transferFrom.selector, _from, _to, roundedDownValue)); require(success && (data.length == 0 || abi.decode(data, (bool))), "DecimalERC20: transferFrom failed"); _validateBalance(_token, _to, roundedDownValue, balanceBefore); } function _approve( IERC20 _token, address _spender, Decimal.decimal memory _value ) internal { _updateDecimal(address(_token)); // to be compatible with some erc20 tokens like USDT __approve(_token, _spender, Decimal.zero()); __approve(_token, _spender, _value); } // // VIEW // function _allowance( IERC20 _token, address _owner, address _spender ) internal view returns (Decimal.decimal memory) { return _toDecimal(_token, _token.allowance(_owner, _spender)); } function _balanceOf(IERC20 _token, address _owner) internal view returns (Decimal.decimal memory) { return _toDecimal(_token, _token.balanceOf(_owner)); } function _totalSupply(IERC20 _token) internal view returns (Decimal.decimal memory) { return _toDecimal(_token, _token.totalSupply()); } function _toDecimal(IERC20 _token, uint256 _number) internal view returns (Decimal.decimal memory) { uint256 tokenDecimals = _getTokenDecimals(address(_token)); if (tokenDecimals >= 18) { return Decimal.decimal(_number.div(10**(tokenDecimals.sub(18)))); } return Decimal.decimal(_number.mul(10**(uint256(18).sub(tokenDecimals)))); } function _toUint(IERC20 _token, Decimal.decimal memory _decimal) internal view returns (uint256) { uint256 tokenDecimals = _getTokenDecimals(address(_token)); if (tokenDecimals >= 18) { return _decimal.toUint().mul(10**(tokenDecimals.sub(18))); } return _decimal.toUint().div(10**(uint256(18).sub(tokenDecimals))); } function _getTokenDecimals(address _token) internal view returns (uint256) { uint256 tokenDecimals = decimalMap[_token]; if (tokenDecimals == 0) { (bool success, bytes memory data) = _token.staticcall(abi.encodeWithSignature("decimals()")); require(success && data.length != 0, "DecimalERC20: get decimals failed"); tokenDecimals = abi.decode(data, (uint256)); } return tokenDecimals; } // // PRIVATE // function _updateDecimal(address _token) private { uint256 tokenDecimals = _getTokenDecimals(_token); if (decimalMap[_token] != tokenDecimals) { decimalMap[_token] = tokenDecimals; } } function __approve( IERC20 _token, address _spender, Decimal.decimal memory _value ) private { // solhint-disable avoid-low-level-calls (bool success, bytes memory data) = address(_token).call(abi.encodeWithSelector(_token.approve.selector, _spender, _toUint(_token, _value))); require(success && (data.length == 0 || abi.decode(data, (bool))), "DecimalERC20: approve failed"); } // To prevent from deflationary token, check receiver's balance is as expectation. function _validateBalance( IERC20 _token, address _to, uint256 _roundedDownValue, Decimal.decimal memory _balanceBefore ) private view { require( _balanceOf(_token, _to).cmp(_balanceBefore.addD(_toDecimal(_token, _roundedDownValue))) == 0, "DecimalERC20: balance inconsistent" ); } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.6.9; // wrap block.xxx functions for testing // only support timestamp and number so far abstract contract BlockContext { //◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤ add state variables below ◥◤◥◤◥◤◥◤◥◤◥◤◥◤◥◤// //◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣ add state variables above ◢◣◢◣◢◣◢◣◢◣◢◣◢◣◢◣// uint256[50] private __gap; function _blockTimestamp() internal view virtual returns (uint256) { return block.timestamp; } function _blockNumber() internal view virtual returns (uint256) { return block.number; } }
pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
pragma solidity ^0.6.0; /** * @dev These functions deal with verification of Merkle trees (hash trees), */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); } else { // Hash(current element of the proof + current computed hash) computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); } } // Check if the computed hash (root) is equal to the provided root return computedHash == root; } }
pragma solidity ^0.6.0; import "../Initializable.sol"; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ contract ContextUpgradeSafe is Initializable { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; }
pragma solidity >=0.4.24 <0.7.0; /** * @title Initializable * * @dev Helper contract to support initializer functions. To use it, replace * the constructor with a function that has the `initializer` modifier. * WARNING: Unlike constructors, initializer functions must be manually * invoked. This applies both to deploying an Initializable contract, as well * as extending an Initializable contract via inheritance. * WARNING: When used with inheritance, manual care must be taken to not invoke * a parent initializer twice, or ensure that all initializers are idempotent, * because this is not dealt with automatically as with constructors. */ contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private initializing; /** * @dev Modifier to use in the initializer function of a contract. */ modifier initializer() { require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized"); bool isTopLevelCall = !initializing; if (isTopLevelCall) { initializing = true; initialized = true; } _; if (isTopLevelCall) { initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. address self = address(this); uint256 cs; assembly { cs := extcodesize(self) } return cs == 0; } // Reserved storage space to allow for layout changes in the future. uint256[50] private ______gap; }
{ "metadata": { "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_claimant","type":"address"},{"indexed":false,"internalType":"uint256","name":"_balance","type":"uint256"}],"name":"Claimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"candidate","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_liquidityProvider","type":"address"},{"internalType":"uint256","name":"_begin","type":"uint256"},{"internalType":"uint256","name":"_end","type":"uint256"}],"name":"claimStatus","outputs":[{"internalType":"bool[]","name":"","type":"bool[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"uint256","name":"_week","type":"uint256"},{"internalType":"uint256","name":"_claimedBalance","type":"uint256"},{"internalType":"bytes32[]","name":"_merkleProof","type":"bytes32[]"}],"name":"claimWeek","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"components":[{"internalType":"uint256","name":"week","type":"uint256"},{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"bytes32[]","name":"merkleProof","type":"bytes32[]"}],"internalType":"struct MerkleRedeemUpgradeSafe.Claim[]","name":"_claims","type":"tuple[]"}],"name":"claimWeeks","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"claimed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLengthOfMerkleRoots","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"uint256","name":"_vestingPeriod","type":"uint256"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"merkleRootIndexes","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"merkleRootTimestampMap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_begin","type":"uint256"},{"internalType":"uint256","name":"_end","type":"uint256"}],"name":"merkleRoots","outputs":[{"internalType":"bytes32[]","name":"","type":"bytes32[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_week","type":"uint256"},{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"},{"internalType":"uint256","name":"_totalAllocation","type":"uint256"}],"name":"seedAllocations","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"setOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"updateOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_liquidityProvider","type":"address"},{"internalType":"uint256","name":"_week","type":"uint256"},{"internalType":"uint256","name":"_claimedBalance","type":"uint256"},{"internalType":"bytes32[]","name":"_merkleProof","type":"bytes32[]"}],"name":"verifyClaim","outputs":[{"internalType":"bool","name":"valid","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vestingPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"weekMerkleRoots","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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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.