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Contract

0x193b775aF4BF9E11656cA48724A710359446BF52
 
Transaction Hash
Method
Block
From
To
Emergency Withdr...203110042024-07-15 9:25:3515 hrs ago1721035535IN
0x193b775a...59446BF52
0 ETH0.000311387.16126529
Emergency Withdr...199135002024-05-20 20:25:4756 days ago1716236747IN
0x193b775a...59446BF52
0 ETH0.003027248.67355743
Withdraw198970872024-05-18 13:20:2358 days ago1716038423IN
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0 ETH0.000186613.32769731
Withdraw198856962024-05-16 23:03:5960 days ago1715900639IN
0x193b775a...59446BF52
0 ETH0.000213983.82225084
Withdraw198782302024-05-15 22:00:3561 days ago1715810435IN
0x193b775a...59446BF52
0 ETH0.000273854.89177084
Withdraw198782272024-05-15 21:59:5961 days ago1715810399IN
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0 ETH0.00024994.46390126
Withdraw198782212024-05-15 21:58:4761 days ago1715810327IN
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0 ETH0.000274714.90711834
Withdraw197953332024-05-04 7:45:1172 days ago1714808711IN
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0 ETH0.000352096.29058976
Withdraw197863422024-05-03 1:34:3573 days ago1714700075IN
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0 ETH0.000315185.63001671
Withdraw197863402024-05-03 1:34:1173 days ago1714700051IN
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0 ETH0.000327475.84948049
Withdraw197863392024-05-03 1:33:5973 days ago1714700039IN
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0 ETH0.000332075.92163322
Emergency Withdr...197593052024-04-29 6:52:5977 days ago1714373579IN
0x193b775a...59446BF52
0 ETH0.0005091211.70892604
Emergency Withdr...197421802024-04-26 21:23:5980 days ago1714166639IN
0x193b775a...59446BF52
0 ETH0.000490047.88079602
Emergency Withdr...196300802024-04-11 4:44:1195 days ago1712810651IN
0x193b775a...59446BF52
0 ETH0.0006834710.99154386
Emergency Withdr...195808592024-04-04 7:17:47102 days ago1712215067IN
0x193b775a...59446BF52
0 ETH0.0008471419.48275244
Emergency Withdr...195007432024-03-24 0:06:47114 days ago1711238807IN
0x193b775a...59446BF52
0 ETH0.0009941415.98769959
Emergency Withdr...194534662024-03-17 8:45:23120 days ago1710665123IN
0x193b775a...59446BF52
0 ETH0.0011673526.84682636
Withdraw194125402024-03-11 14:45:47126 days ago1710168347IN
0x193b775a...59446BF52
0 ETH0.0050543490.28354752
Withdraw194125382024-03-11 14:45:23126 days ago1710168323IN
0x193b775a...59446BF52
0 ETH0.0051334191.71566814
Withdraw194125362024-03-11 14:44:59126 days ago1710168299IN
0x193b775a...59446BF52
0 ETH0.0050771190.70967875
Emergency Withdr...194073272024-03-10 21:17:59127 days ago1710105479IN
0x193b775a...59446BF52
0 ETH0.0026079659.97803544
Emergency Withdr...194020492024-03-10 3:35:35127 days ago1710041735IN
0x193b775a...59446BF52
0 ETH0.0031671750.93393714
Withdraw192517152024-02-18 2:24:59148 days ago1708223099IN
0x193b775a...59446BF52
0 ETH0.0009148516.34519846
Withdraw192516562024-02-18 2:12:59148 days ago1708222379IN
0x193b775a...59446BF52
0 ETH0.0009433716.82591541
Withdraw192516372024-02-18 2:09:11148 days ago1708222151IN
0x193b775a...59446BF52
0 ETH0.0008835915.75966363
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Contract Source Code Verified (Exact Match)

Contract Name:
MasterChef

Compiler Version
v0.6.6+commit.6c089d02

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 11 : MasterChef.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/utils/EnumerableSet.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/IMuse.sol";

contract MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    struct UserInfo {
        uint256 amount;
        uint256 rewardDebt;
    }

    struct PoolInfo {
        IERC20 lpToken;
        uint256 allocPoint;
        uint256 lastRewardBlock;
        uint256 accMusePerShare;
    }

    // The MUSE TOKEN!
    IMuse public muse;
    // Dev address.
    address public devaddr;
    // Block number when bonus MUSE period ends.
    uint256 public bonusEndBlock;
    // MUSE tokens created per block.
    uint256 public musePerBlock;
    // Bonus muliplier for early MUSE makers.
    uint256 public constant BONUS_MULTIPLIER = 10;

    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when MUSE mining starts.
    uint256 public startBlock;

    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(
        address indexed user,
        uint256 indexed pid,
        uint256 amount
    );

    constructor(
        IMuse _muse,
        address _devaddr,
        uint256 _musePerBlock,
        uint256 _startBlock,
        uint256 _bonusEndBlock
    ) public {
        muse = _muse;
        devaddr = _devaddr;
        musePerBlock = _musePerBlock;
        bonusEndBlock = _bonusEndBlock;
        startBlock = _startBlock;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(
        uint256 _allocPoint,
        IERC20 _lpToken,
        bool _withUpdate
    ) public onlyOwner {
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock =
            block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(
            PoolInfo({
                lpToken: _lpToken,
                allocPoint: _allocPoint,
                lastRewardBlock: lastRewardBlock,
                accMusePerShare: 0
            })
        );
    }

    // Update the given pool's MUSE allocation point. Can only be called by the owner.
    function set(
        uint256 _pid,
        uint256 _allocPoint,
        bool _withUpdate
    ) public onlyOwner {
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(
            _allocPoint
        );
        poolInfo[_pid].allocPoint = _allocPoint;
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to)
        public
        view
        returns (uint256)
    {
        if (_to <= bonusEndBlock) {
            return _to.sub(_from).mul(BONUS_MULTIPLIER);
        } else if (_from >= bonusEndBlock) {
            return _to.sub(_from);
        } else {
            return
                bonusEndBlock.sub(_from).mul(BONUS_MULTIPLIER).add(
                    _to.sub(bonusEndBlock)
                );
        }
    }

    function pendingMuse(uint256 _pid, address _user)
        external
        view
        returns (uint256)
    {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accMusePerShare = pool.accMusePerShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier =
                getMultiplier(pool.lastRewardBlock, block.number);
            uint256 museReward =
                multiplier.mul(musePerBlock).mul(pool.allocPoint).div(
                    totalAllocPoint
                );
            accMusePerShare = accMusePerShare.add(
                museReward.mul(1e12).div(lpSupply)
            );
        }
        return user.amount.mul(accMusePerShare).div(1e12).sub(user.rewardDebt);
    }

    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 museReward =
            multiplier.mul(musePerBlock).mul(pool.allocPoint).div(
                totalAllocPoint
            );
        muse.mint(devaddr, museReward.div(10));
        muse.mint(address(this), museReward);
        pool.accMusePerShare = pool.accMusePerShare.add(
            museReward.mul(1e12).div(lpSupply)
        );
        pool.lastRewardBlock = block.number;
    }

    // Deposit LP tokens to MasterChef for MUSE allocation.
    function deposit(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending =
                user.amount.mul(pool.accMusePerShare).div(1e12).sub(
                    user.rewardDebt
                );
            if (pending > 0) {
                safeMuseTransfer(msg.sender, pending);
            }
        }
        if (_amount > 0) {
            pool.lpToken.safeTransferFrom(
                address(msg.sender),
                address(this),
                _amount
            );
            user.amount = user.amount.add(_amount);
        }
        user.rewardDebt = user.amount.mul(pool.accMusePerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending =
            user.amount.mul(pool.accMusePerShare).div(1e12).sub(
                user.rewardDebt
            );
        if (pending > 0) {
            safeMuseTransfer(msg.sender, pending);
        }
        if (_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.lpToken.safeTransfer(address(msg.sender), _amount);
        }
        user.rewardDebt = user.amount.mul(pool.accMusePerShare).div(1e12);
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        user.amount = 0;
        user.rewardDebt = 0;
        pool.lpToken.safeTransfer(address(msg.sender), amount);
        emit EmergencyWithdraw(msg.sender, _pid, amount);
    }

    function safeMuseTransfer(address _to, uint256 _amount) internal {
        uint256 museBal = muse.balanceOf(address(this));
        if (_amount > museBal) {
            muse.transfer(_to, museBal);
        } else {
            muse.transfer(_to, _amount);
        }
    }

    // Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wut?");
        devaddr = _devaddr;
    }
}

File 2 of 11 : Vesting.sol
pragma solidity ^0.6.0;

import "../interfaces/IMuse.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";

contract Vesting {
    using SafeMath for uint256;

    IMuse public token;

    uint256 public duration = 730 days;
    uint256 public timeStarted;

    mapping(address => uint256) public paid;
    mapping(address => uint256) public totalAmount;

    address owner;

    constructor(IMuse _token) public {
        timeStarted = now;
        token = IMuse(_token);
        owner = msg.sender;
    }

    function claimTokens() external {
        require(
            totalAmount[msg.sender] >= paid[msg.sender],
            "Finished vesting"
        );
        uint256 _amount = getAllocation();
        paid[msg.sender] += _amount;
        token.mint(msg.sender, _amount);
    }

    //@TODO check my math
    function getAllocation() public view returns (uint256) {
        uint256 perDay = totalAmount[msg.sender].div(duration);
        uint256 daysPassed = (now.sub(timeStarted)).div(1 days);
        uint256 amount = (daysPassed.mul(perDay)).sub(paid[msg.sender]);
        return amount;
    }

    // as we don't have many players we could add manually how much everyone should get in 2 txs
    function addAmts(address[] calldata _players, uint256[] calldata _amounts)
        external
    {
        require(owner == msg.sender);
        for (uint256 index = 0; index < _players.length; index++) {
            totalAmount[_players[index]] = _amounts[index];
        }
    }
}

File 3 of 11 : IMuse.sol
pragma solidity ^0.6.0;

// Interface for our erc20 token
interface IMuse {
    function totalSupply() external view returns (uint256);

    function balanceOf(address tokenOwner)
        external
        view
        returns (uint256 balance);

    function allowance(address tokenOwner, address spender)
        external
        view
        returns (uint256 remaining);

    function transfer(address to, uint256 tokens)
        external
        returns (bool success);

    function approve(address spender, uint256 tokens)
        external
        returns (bool success);

    function transferFrom(
        address from,
        address to,
        uint256 tokens
    ) external returns (bool success);

    function mintingFinished() external view returns (bool);

    function mint(address to, uint256 amount) external;

    function burn(uint256 amount) external;

    function burnFrom(address account, uint256 amount) external;
}

File 4 of 11 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

File 5 of 11 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 6 of 11 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 7 of 11 : EnumerableSet.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`
 * (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint256(_at(set._inner, index)));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

File 8 of 11 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "../GSN/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 9 of 11 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.2;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 10 of 11 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 11 of 11 : DuckChef2.sol
// pragma solidity ^0.6.0;

// import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
// import "@openzeppelin/contracts/utils/EnumerableSet.sol";
// import "@openzeppelin/contracts/math/SafeMath.sol";
// import "@openzeppelin/contracts/access/Ownable.sol";

// import "../interfaces/IERC20MintBurn.sol";
// import "../interfaces/IMuse.sol";
// import "./NFT20.sol";

// import "hardhat/console.sol";

// interface IMigratorChef {
//     // Perform LP token migration from legacy UniswapV2 to tokenSwap.
//     // Take the current LP token address and return the new LP token address.
//     // Migrator should have full access to the caller's LP token.
//     // Return the new LP token address.
//     //
//     // XXX Migrator must have allowance access to UniswapV2 LP tokens.
//     // tokenSwap must mint EXACTLY the same amount of tokenSwap LP tokens or
//     // else something bad will happen. Traditional UniswapV2 does not
//     // do that so be careful!
//     function migrate(IERC20 token) external returns (IERC20);
// }

// // MasterChef is the master of token. He can make token and he is a fair guy.
// //
// // Note that it's ownable and the owner wields tremendous power. The ownership
// // will be transferred to a governance smart contract once token is sufficiently
// // distributed and the community can show to govern itself.
// //
// // Have fun reading it. Hopefully it's bug-free. God bless.
// contract DuckChef2 is Ownable {
//     using SafeMath for uint256;
//     using SafeERC20 for IERC20;
//     // Info of each user.
//     struct NftInfo {
//         uint256 amount; // How many LP tokens the user has provided.
//         uint256 rewardDebt; // Reward debt. See explanation below.
//         //
//         // We do some fancy math here. Basically, any point in time, the amount of tokens
//         // entitled to a user but is pending to be distributed is:
//         //
//         //   pending reward = (user.amount * pool.acctokenPerShare) - user.rewardDebt
//         //
//         // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
//         //   1. The pool's `acctokenPerShare` (and `lastRewardBlock`) gets updated.
//         //   2. User receives the pending reward sent to his/her address.
//         //   3. User's `amount` gets updated.
//         //   4. User's `rewardDebt` gets updated.
//     }
//     // Info of each pool.
//     struct PoolInfo {
//         IERC20 lpToken; // Address of LP token contract.
//         uint256 allocPoint; // How many allocation points assigned to this pool. tokens to distribute per block.
//         uint256 lastRewardBlock; // Last block number that tokens distribution occurs.
//         uint256 accTokenPerShare; // Accumulated tokens per share, times 1e12. See below.
//     }
//     // The token TOKEN!
//     IERC20MintBurn public token;

//     // the NFT20 Contract
//     IMuse public nft20;

//     // Dev address.
//     address public devaddr;
//     // Block number when bonus token period ends.
//     uint256 public bonusEndBlock;
//     // token tokens created per block.
//     uint256 public tokenPerBlock;
//     // Bonus muliplier for early token makers.
//     uint256 public constant BONUS_MULTIPLIER = 10;
//     // The migrator contract. It has a lot of power. Can only be set through governance (owner).
//     IMigratorChef public migrator;
//     // Info of each pool.
//     PoolInfo[] public poolInfo;

//     // Info of each NFT that registered to get rewards.
//     mapping(uint256 => NftInfo) public nftInfo;
//     // Total allocation points. Must be the sum of all allocation points in all pools.
//     uint256 public totalAllocPoint = 0;
//     // The block number when token mining starts.
//     uint256 public startBlock;
//     event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
//     event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
//     event EmergencyWithdraw(
//         address indexed user,
//         uint256 indexed pid,
//         uint256 amount
//     );

//     constructor(
//         IERC20MintBurn _token,
//         IMuse _nft20,
//         address _devaddr,
//         uint256 _tokenPerBlock,
//         uint256 _startBlock,
//         uint256 _bonusEndBlock
//     ) public {
//         token = _token;
//         nft20 = _nft20;
//         devaddr = _devaddr;
//         tokenPerBlock = _tokenPerBlock;
//         bonusEndBlock = _bonusEndBlock;
//         startBlock = _startBlock;
//     }

//     function poolLength() external view returns (uint256) {
//         return poolInfo.length;
//     }

//     // Add a new lp to the pool. Can only be called by the owner.
//     // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
//     function add(
//         uint256 _allocPoint,
//         IERC20 _lpToken,
//         bool _withUpdate
//     ) public onlyOwner {
//         if (_withUpdate) {
//             massUpdatePools();
//         }
//         uint256 lastRewardBlock =
//             block.number > startBlock ? block.number : startBlock;
//         totalAllocPoint = totalAllocPoint.add(_allocPoint);
//         poolInfo.push(
//             PoolInfo({
//                 lpToken: _lpToken,
//                 allocPoint: _allocPoint,
//                 lastRewardBlock: lastRewardBlock,
//                 accTokenPerShare: 0
//             })
//         );
//     }

//     // Update the given pool's token allocation point. Can only be called by the owner.
//     function set(
//         uint256 _pid,
//         uint256 _allocPoint,
//         bool _withUpdate
//     ) public onlyOwner {
//         if (_withUpdate) {
//             massUpdatePools();
//         }
//         totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(
//             _allocPoint
//         );
//         poolInfo[_pid].allocPoint = _allocPoint;
//     }

//     // Set the migrator contract. Can only be called by the owner.
//     function setMigrator(IMigratorChef _migrator) public onlyOwner {
//         migrator = _migrator;
//     }

//     // Migrate lp token to another lp contract. Can be called by anyone. We trust that migrator contract is good.
//     function migrate(uint256 _pid) public {
//         require(address(migrator) != address(0), "migrate: no migrator");
//         PoolInfo storage pool = poolInfo[_pid];
//         IERC20 lpToken = pool.lpToken;
//         uint256 bal = lpToken.balanceOf(address(this));
//         lpToken.safeApprove(address(migrator), bal);
//         IERC20 newLpToken = migrator.migrate(lpToken);
//         require(bal == newLpToken.balanceOf(address(this)), "migrate: bad");
//         pool.lpToken = newLpToken;
//     }

//     // Return reward multiplier over the given _from to _to block.
//     function getMultiplier(uint256 _from, uint256 _to)
//         public
//         view
//         returns (uint256)
//     {
//         if (_to <= bonusEndBlock) {
//             return _to.sub(_from).mul(BONUS_MULTIPLIER);
//         } else if (_from >= bonusEndBlock) {
//             return _to.sub(_from);
//         } else {
//             return
//                 bonusEndBlock.sub(_from).mul(BONUS_MULTIPLIER).add(
//                     _to.sub(bonusEndBlock)
//                 );
//         }
//     }

//     // View function to see pending tokens on frontend.
//     function pendingToken(uint256 _pid, uint256 _nftId)
//         external
//         view
//         returns (uint256)
//     {
//         PoolInfo storage pool = poolInfo[_pid];
//         NftInfo storage nft = nftInfo[_nftId];
//         console.log("amount", nft.amount);
//         uint256 accTokenPerShare = pool.accTokenPerShare;
//         console.log("accTokenPerShare", accTokenPerShare);

//         uint256 lpSupply = nft20.totalStaked(address(pool.lpToken));

//         console.log("lpSupply", lpSupply);

//         // uint256 lpSupply = pool.lpToken.balanceOf(address(this));
//         if (block.number > pool.lastRewardBlock && lpSupply != 0) {
//             uint256 multiplier =
//                 getMultiplier(pool.lastRewardBlock, block.number);
//             uint256 tokenReward =
//                 multiplier.mul(tokenPerBlock).mul(pool.allocPoint).div(
//                     totalAllocPoint
//                 );
//             accTokenPerShare = accTokenPerShare.add(
//                 tokenReward.mul(1e12).div(lpSupply)
//             );

//             console.log("accTokenPerShare", accTokenPerShare);
//         }

//         console.log(
//             "last",
//             nft.amount.mul(accTokenPerShare).div(1e12).sub(nft.rewardDebt)
//         );
//         console.log("nft.rewardDebt", nft.rewardDebt);

//         return nft.amount.mul(accTokenPerShare).div(1e12).sub(nft.rewardDebt);
//     }

//     // Update reward variables for all pools. Be careful of gas spending!
//     function massUpdatePools() public {
//         uint256 length = poolInfo.length;
//         for (uint256 pid = 0; pid < length; ++pid) {
//             updatePool(pid);
//         }
//     }

//     // Update reward variables of the given pool to be up-to-date.
//     function updatePool(uint256 _pid) public {
//         PoolInfo storage pool = poolInfo[_pid];
//         if (block.number <= pool.lastRewardBlock) {
//             return;
//         }

//         uint256 lpSupply = nft20.totalStaked(address(pool.lpToken));
//         // uint256 lpSupply = pool.lpToken.balanceOf(address(this));
//         if (lpSupply == 0) {
//             pool.lastRewardBlock = block.number;
//             return;
//         }
//         uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
//         uint256 tokenReward =
//             multiplier.mul(tokenPerBlock).mul(pool.allocPoint).div(
//                 totalAllocPoint
//             );
//         token.mint(devaddr, tokenReward.div(10));
//         token.mint(address(this), tokenReward);
//         pool.accTokenPerShare = pool.accTokenPerShare.add(
//             tokenReward.mul(1e12).div(lpSupply)
//         );
//         pool.lastRewardBlock = block.number;
//     }

//     // Register NFT20 token to DuckChef for $TOKEN allocation.
//     function register(uint256 _pid, uint256 _nftId) public {
//         PoolInfo storage pool = poolInfo[_pid];
//         (address _erc20address, uint256 _amount, ) = nft20.getNFTInfo(_nftId);
//         require(_erc20address == address(pool.lpToken), "NFT don't match pool");
//         require(nft20.ownerOf(_nftId) == msg.sender, "!owner");
//         NftInfo storage nft = nftInfo[_nftId];

//         require(nft.amount == 0, "Can't register twice");

//         updatePool(_pid);

//         nft.amount = _amount;

//         // @Maybe we can ake this out as it will be by single NFT each time and when withdraw
//         // NFT info is deleted.

//         // TODO! check this, without this was returning 0 all the time.
//         // nft.rewardDebt = nft.amount.mul(pool.accTokenPerShare).div(1e12);
//         emit Deposit(msg.sender, _pid, _nftId);
//     }

//     // Withdraw all earnings and unregister NFT.
//     function withdraw(uint256 _pid, uint256 _nftId) public {
//         PoolInfo storage pool = poolInfo[_pid];
//         // does nft token match pool?
//         (address _erc20address, , ) = nft20.getNFTInfo(_nftId);
//         require(_erc20address == address(pool.lpToken), "NFT don't match pool");
//         // make sure msg.sender is owner of nft
//         require(nft20.ownerOf(_nftId) == msg.sender, "!owner");
//         NftInfo storage nft = nftInfo[_nftId];

//         updatePool(_pid);
//         uint256 pending =
//             nft.amount.mul(pool.accTokenPerShare).div(1e12).sub(nft.rewardDebt);
//         if (pending > 0) {
//             safeTokenTransfer(msg.sender, pending);
//         }

//         // delete this NFT as it is paying off all earnings up until this point.
//         delete nftInfo[_nftId];

//         emit Withdraw(msg.sender, _pid, _nftId);
//     }

//     //if staker owned many NFTs with same lp tokens use batch withdraw
//     function withdrawBatch(uint256 _pid, uint256[] memory _nftIds) public {
//         for (uint256 i = 0; i < _nftIds.length; i++) {
//             withdraw(_pid, _nftIds[i]);
//         }
//     }

//     // Safe token transfer function, just in case if rounding error causes pool to not have enough tokens.
//     function safeTokenTransfer(address _to, uint256 _amount) internal {
//         uint256 tokenBal = token.balanceOf(address(this));
//         if (_amount > tokenBal) {
//             token.transfer(_to, tokenBal);
//         } else {
//             token.transfer(_to, _amount);
//         }
//     }

//     // Update dev address by the previous dev.
//     function dev(address _devaddr) public {
//         require(msg.sender == devaddr, "dev: wut?");
//         devaddr = _devaddr;
//     }
// }

Settings
{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"contract IMuse","name":"_muse","type":"address"},{"internalType":"address","name":"_devaddr","type":"address"},{"internalType":"uint256","name":"_musePerBlock","type":"uint256"},{"internalType":"uint256","name":"_startBlock","type":"uint256"},{"internalType":"uint256","name":"_bonusEndBlock","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"BONUS_MULTIPLIER","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"contract IERC20","name":"_lpToken","type":"address"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"bonusEndBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_devaddr","type":"address"}],"name":"dev","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"devaddr","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_from","type":"uint256"},{"internalType":"uint256","name":"_to","type":"uint256"}],"name":"getMultiplier","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"muse","outputs":[{"internalType":"contract IMuse","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"musePerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pendingMuse","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"poolInfo","outputs":[{"internalType":"contract IERC20","name":"lpToken","type":"address"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"uint256","name":"lastRewardBlock","type":"uint256"},{"internalType":"uint256","name":"accMusePerShare","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000b6ca7399b4f9ca56fc27cbff44f4d2e4eef1fc810000000000000000000000000f4676178b5c53ae0a655f1b19a96387e4b8b5f2000000000000000000000000000000000000000000000000013465315f6b5aa000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _muse (address): 0xB6Ca7399B4F9CA56FC27cBfF44F4d2e4Eef1fc81
Arg [1] : _devaddr (address): 0x0f4676178b5c53Ae0a655f1B19A96387E4b8B5f2
Arg [2] : _musePerBlock (uint256): 86805555555556000
Arg [3] : _startBlock (uint256): 0
Arg [4] : _bonusEndBlock (uint256): 0

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000b6ca7399b4f9ca56fc27cbff44f4d2e4eef1fc81
Arg [1] : 0000000000000000000000000f4676178b5c53ae0a655f1b19a96387e4b8b5f2
Arg [2] : 000000000000000000000000000000000000000000000000013465315f6b5aa0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [4] : 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.