Contract

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• library Math
•    - function max(uint256 a, uint256 b)
•    - function min(uint256 a, uint256 b)
•    - function average(uint256 a, uint256 b ...
• library SafeMath
•    - function add(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b, st ...
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b, st ...
•    - function mod(uint256 a, uint256 b)
•    - function mod(uint256 a, uint256 b, st ...
• interface IERC20
•    - function totalSupply()
•    - function balanceOf(address account)
•    - function transfer(address recipient, ...
•    - function allowance(address owner, add ...
•    - function approve(address spender, uin ...
•    - function transferFrom(address sender, ...
• library Address
•    - function isContract(address account)
•    - function toPayable(address account)
•    - function sendValue(address payable re ...
• library SafeERC20
•    - function safeTransfer(IERC20 token, a ...
•    - function safeTransferFrom(IERC20 toke ...
•    - function safeApprove(IERC20 token, ad ...
•    - function safeIncreaseAllowance(IERC20 ...
•    - function safeDecreaseAllowance(IERC20 ...
•    - function callOptionalReturn(IERC20 to ...
• interface ApproveAndCallFallBack
•    - function receiveApproval(address _fro ...
•  contract LPTokenWrapper
•    - function totalSupply()
•    - function balanceOf(address account)
•    - function stake(uint256 amount)
•    - function withdraw(uint256 amount)
•  contract Unipool is LPTokenWrapper ... *
•    - function lastTimeRewardApplicable()
•    - function rewardPerToken()
•    - function earned(address account)
•    - function stake(uint256 amount)
•    - function withdraw(uint256 amount)
•    - function exit()
•    - function getReward()
•    - function receiveApproval(address _fro ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2020-07-21
*/

pragma solidity ^0.5.0;


/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
    }
}

/**
 * @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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
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);
}

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @dev Converts an `address` into `address payable`. Note that this is
     * simply a type cast: the actual underlying value is not changed.
     *
     * _Available since v2.4.0._
     */
    function toPayable(address account) internal pure returns (address payable) {
        return address(uint160(account));
    }

    /**
     * @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].
     *
     * _Available since v2.4.0._
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

/**
 * @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 ERC20;` 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));
    }

    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.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "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");
        }
    }
}

interface ApproveAndCallFallBack {
    /**
    * @dev This allows users to use their tokens to interact with contracts in one function call instead of two
    * @param _from Address of the account transferring the tokens
    * @param _amount The amount of tokens approved for in the transfer
    * @param _token Address of the token contract calling this function
    * @param _data Optional data that can be used to add signalling information in more complex staking applications
    */
    function receiveApproval(address _from, uint256 _amount, address _token, bytes calldata _data) external;
}

contract LPTokenWrapper {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // Uniswap v2 ANT/ETH pair token
    IERC20 public UNI = IERC20(0xfa19de406e8F5b9100E4dD5CaD8a503a6d686Efe);

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    function stake(uint256 amount) public {
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        UNI.safeTransferFrom(msg.sender, address(this), amount);
    }

    function withdraw(uint256 amount) public {
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = _balances[msg.sender].sub(amount);
        UNI.safeTransfer(msg.sender, amount);
    }
}

contract Unipool is LPTokenWrapper, ApproveAndCallFallBack {
    uint256 public constant DURATION = 30 days;
    // Aragon Network Token
    IERC20 public ANT = IERC20(0x960b236A07cf122663c4303350609A66A7B288C0);

    uint256 public periodFinish;
    uint256 public rewardRate;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;
    mapping(address => uint256) public userRewardPerTokenPaid;
    mapping(address => uint256) public rewards;

    event RewardAdded(uint256 reward);
    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event RewardPaid(address indexed user, uint256 reward);

    modifier updateReward(address account) {
        rewardPerTokenStored = rewardPerToken();
        lastUpdateTime = lastTimeRewardApplicable();
        if (account != address(0)) {
            rewards[account] = earned(account);
            userRewardPerTokenPaid[account] = rewardPerTokenStored;
        }
        _;
    }

    function lastTimeRewardApplicable() public view returns (uint256) {
        return Math.min(block.timestamp, periodFinish);
    }

    function rewardPerToken() public view returns (uint256) {
        if (totalSupply() == 0) {
            return rewardPerTokenStored;
        }
        return
            rewardPerTokenStored.add(
                lastTimeRewardApplicable()
                    .sub(lastUpdateTime)
                    .mul(rewardRate)
                    .mul(1e18)
                    .div(totalSupply())
            );
    }

    function earned(address account) public view returns (uint256) {
        return
            balanceOf(account)
                .mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))
                .div(1e18)
                .add(rewards[account])
            ;
    }

    // stake visibility is public as overriding LPTokenWrapper's stake() function
    function stake(uint256 amount) public updateReward(msg.sender) {
        require(amount > 0, "Cannot stake 0");
        super.stake(amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount) public updateReward(msg.sender) {
        require(amount > 0, "Cannot withdraw 0");
        super.withdraw(amount);
        emit Withdrawn(msg.sender, amount);
    }

    function exit() external {
        withdraw(balanceOf(msg.sender));
        getReward();
    }

    function getReward() public updateReward(msg.sender) {
        uint256 reward = earned(msg.sender);
        if (reward > 0) {
            rewards[msg.sender] = 0;
            ANT.safeTransfer(msg.sender, reward);
            emit RewardPaid(msg.sender, reward);
        }
    }

    /**
     * @dev This function must be triggered by the contribution token approve-and-call fallback.
     *      It will update reward rate and time.
     * @param _from Address of the original caller approving the tokens
     * @param _amount Amount of reward tokens added to the pool
     * @param _token Address of the token triggering the approve-and-call fallback
     */
    function receiveApproval(address _from, uint256 _amount, address _token, bytes calldata) external updateReward(address(0)) {
        require(_amount > 0, "Cannot approve 0");
        require(
            _token == msg.sender && _token == address(ANT),
            "Wrong token"
        );

        if (block.timestamp >= periodFinish) {
            rewardRate = _amount.div(DURATION);
        } else {
            uint256 remaining = periodFinish.sub(block.timestamp);
            uint256 leftover = remaining.mul(rewardRate);
            rewardRate = _amount.add(leftover).div(DURATION);
        }
        lastUpdateTime = block.timestamp;
        periodFinish = block.timestamp.add(DURATION);

        ANT.safeTransferFrom(_from, address(this), _amount);

        emit RewardAdded(_amount);
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"constant":true,"inputs":[],"name":"ANT","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"DURATION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"UNI","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"exit","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"getReward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"lastTimeRewardApplicable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"lastUpdateTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"periodFinish","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"receiveApproval","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"rewardPerToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rewardPerTokenStored","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rewardRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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