Contract 0x8302FE9F0C509a996573D3Cc5B0D5D51e4FDD5eC

 

Contract Overview

Synthetix: Staking Rewards (Uniswap V2 sXAU)
Balance:
0 Ether

EtherValue:
$0.00

Token:
Ad
Ad
Txn Hash
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0xe1a1f196658eb3b8ac0b232aaf8d29c00bc703da22b394a5eccd8ed4208dfde6112453322020-11-12 21:44:46149 days 21 hrs ago0xad31f17b5cf5c4f10268476ea1e04bc309e754a4 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.002578215
0xfae5572d16784923c695965c9ff0554417fac162abdca371d10ffce017a77c40104724632020-07-16 19:44:14268 days 23 hrs ago0xba743394ca6c38886c066e45bb9980a09aec7a65 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00344291244
0xbf1213bfef645d516da834bbd0bea53aa321975b3c9afbac25e0767d9922ba99104480152020-07-13 0:39:16272 days 18 hrs ago0x644239848c7b402d813295893db428aae7cc4cb5 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.003142988418.3
0x885327641d416d3780c2109d95c3aa6f7313d4ee870a463bb8bf56b7d06e22aa104476272020-07-12 23:14:37272 days 20 hrs ago0x3f3003dec579ffe478be29133c22dc1bb273a2b8 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.003286764817.6
0x4d327b1ac371c77b071e8abf000df20bdb2696a42e2a696112e2d8dfb0787bef104094382020-07-07 1:44:14278 days 17 hrs ago0xde7d61f2dc34f6cc3e012b11fb3dbd537e73df16 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00250768523.5
0x40f1b86a97fa10d44b3d460fff225c9d1c8e3041cfad7ee47e1c046a260d2d9d104093122020-07-07 1:14:07278 days 18 hrs ago0xa97bc5dd7b32003398645edeb2178c91087f86d8 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.004668725
0x9b0d5b765ce7b3bba7158c035e4fada3520ccbd5d9faea8070f60bbbc2f685b0104079962020-07-06 20:25:53278 days 23 hrs ago0xa2ab5208207b516a1c88cccd02de67c90cace0e5 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00242231722.7
0x45ca2ac31feeacb4a38ba6c2c4a5c0c35f41fae1d415fbd2474559359f79354a104073992020-07-06 18:13:00279 days 1 hr ago0xfd1935fd3c8f49723deb7296c58ba4bb1a0e48e1 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00480894428
0x7bae7db58ac1bdd4d0e59490a3a37d9fbec34d25dd2379a66e8a13402566db57104059472020-07-06 12:31:23279 days 7 hrs ago0x7eb9d67f9daea510399a1ee978b36e66626058d3 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00376487133
0x6da16e592f2087cf86280b6960a75359bd230fe93291751b29bdf2cf3c6b173b104044742020-07-06 7:11:45279 days 12 hrs ago0xde206bc0fde2ef5c8bb6a1d552a64f82a2407be4 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.0041616939
0xf1fc538123bfce50a8bf2f4e5b9a25bee2aa1131b016a058c7db15be966fb6ce104043412020-07-06 6:44:29279 days 12 hrs ago0xde206bc0fde2ef5c8bb6a1d552a64f82a2407be4 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00361504535
0xb0ad7c226826e9e01fd6bb01f431c98914d9f85e119456088f248b78d3478501103984602020-07-05 8:58:49280 days 10 hrs ago0x8cc8aa103bfe1cd8755dc80c64539370b587909f IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00446544826
0x1a822e34727f268e846feb6ba561777981adae453443501792216dfdf6a15d32103961672020-07-05 0:29:12280 days 19 hrs ago0x91ebfee4f90adb3c64d5f171cd8d1efece9cfad8 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.003812805622.2
0xc241e168991e57850ebe63bbda159736329812486981423ecfa9684c38814807103923372020-07-04 10:14:41281 days 9 hrs ago0x8be615d0e060b4539929d3e3f01e498ba55ae6d6 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.004293725
0x91e44bbaaa5af98ab6611345113d9b92930f266dff91e2d5e077bac265120188103906262020-07-04 3:53:02281 days 15 hrs ago0xc55f8db15883413ea5ad9173e4cf104199b3445a IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00480894428
0xb7ac0fd5330af0ad0812a5aa65390ddc4ce36f4bfd574ea01259620e88dd581d103905392020-07-04 3:34:31281 days 15 hrs ago0xc1ede54cbd1af82bb36bca1e72d60e32013ceb10 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.004139126824.1
0x3ba622f6293487fcda1d3eabe1bd8fc70d675bc058dcc9462c7addbe40aa02ad103889252020-07-03 21:31:24281 days 22 hrs ago0xc6fdcc657b02aa0c3075eddcce58c65d248b9bc2 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00448195224
0x841674cfde6a8476b4e31c5e134ee23d931be4d6c33b97791dac426a715bf579103888092020-07-03 21:09:18281 days 22 hrs ago0xba743394ca6c38886c066e45bb9980a09aec7a65 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00273808824
0x656a8d2f24dbbb511a89a368e5ddc8f972f677e2cb62b2fc08c6e1d7b3b0e2e7103887042020-07-03 20:45:37281 days 22 hrs ago0x2d0b0664d55ddc851561678bbe97d538ae78ed72 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00247567223.2
0x0001610cadff9807c1a5d0ee14b52c6e132d5f602688d52a0bdadaf0220a9950103886872020-07-03 20:42:35281 days 22 hrs ago0x2d0b0664d55ddc851561678bbe97d538ae78ed72 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00183331226
0x20e88ef224e408c05dad65df305a1525c5acbb500141e4d9b3570be18e4c8a90103886772020-07-03 20:41:17281 days 22 hrs ago0x2d0b0664d55ddc851561678bbe97d538ae78ed72 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00272134226
0xbc7f1621ad3612d8e6f1eb9118f59333891638f468768bea522822efe41c6ec0103883922020-07-03 19:46:48281 days 23 hrs ago0x5075a6f2c637444fd66a785a1485d7206ae9c153 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00484195224
0x45e9497edbc1659ce3f579ccfccac4b5268b295ab323dba866284a7eb65f8da9103882972020-07-03 19:25:05282 days 8 mins ago0x588031347beaa0d43978bc8c0094138a67d1a071 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.003984553623.2
0x9b25da46255993ebf2ad705954aff774d11fa4c3a408bd5af4b5561975b2165a103875512020-07-03 16:34:28282 days 2 hrs ago0xec6e6c0841a2ba474e92bf42baf76bfe80e8657c IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.00859040846
0x3a323f9d62051cc1b7863f79ce3a96ac1a2af7ad2aad6fb2555301705ee05798103864822020-07-03 12:37:09282 days 6 hrs ago0xe7f6faca757a2d62342688d9246484e9bb6b2a05 IN  Synthetix: Staking Rewards (Uniswap V2 sXAU)0 Ether0.005335550
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Contract Source Code Verified (Exact Match)

Contract Name:
StakingRewards

Compiler Version
v0.5.17+commit.d19bba13

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2020-05-29
*/

/*
   ____            __   __        __   _
  / __/__ __ ___  / /_ / /  ___  / /_ (_)__ __
 _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ /
/___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\
     /___/

* Staking Rewards for UNI-V2 sGOLD Liquidity Providers 
* Synthetix: StakingRewards.sol
*
* Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/StakingRewards.sol
* Docs: https://docs.synthetix.io/contracts/StakingRewards
*
* Contract Dependencies: 
*	- Owned
*	- ReentrancyGuard
*	- RewardsDistributionRecipient
*	- TokenWrapper
* Libraries: 
*	- Address
*	- Math
*	- SafeERC20
*	- SafeMath
*
* MIT License
* ===========
*
* Copyright (c) 2020 Synthetix
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/

/* ===============================================
* Flattened with Solidifier by Coinage
* 
* https://solidifier.coina.ge
* ===============================================
*/


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) {
        require(b <= a, "SafeMath: subtraction overflow");
        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-solidity/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) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b != 0, "SafeMath: modulo by zero");
        return a % b;
    }
}


/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the `nonReentrant` modifier
 * available, which can be aplied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 */
contract ReentrancyGuard {
    /// @dev counter to allow mutex lock with only one SSTORE operation
    uint256 private _guardCounter;

    constructor () internal {
        // The counter starts at one to prevent changing it from zero to a non-zero
        // value, which is a more expensive operation.
        _guardCounter = 1;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _guardCounter += 1;
        uint256 localCounter = _guardCounter;
        _;
        require(localCounter == _guardCounter, "ReentrancyGuard: reentrant call");
    }
}


interface IERC20 {
    // ERC20 Optional Views
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);

    // Views
    function totalSupply() external view returns (uint);

    function balanceOf(address owner) external view returns (uint);

    function allowance(address owner, address spender) external view returns (uint);

    // Mutative functions
    function transfer(address to, uint value) external returns (bool);

    function approve(address spender, uint value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint value
    ) external returns (bool);

    // Events
    event Transfer(address indexed from, address indexed to, uint value);

    event Approval(address indexed owner, address indexed spender, uint value);
}


/**
 * @dev Collection of functions related to the address type,
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * This test is non-exhaustive, and there may be false-negatives: during the
     * execution of a contract's constructor, its address will be reported as
     * not containing a contract.
     *
     * > It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     */
    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;
    }
}


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);
        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");
        }
    }
}


// https://docs.synthetix.io/contracts/Owned
contract Owned {
    address public owner;
    address public nominatedOwner;

    constructor(address _owner) public {
        require(_owner != address(0), "Owner address cannot be 0");
        owner = _owner;
        emit OwnerChanged(address(0), _owner);
    }

    function nominateNewOwner(address _owner) external onlyOwner {
        nominatedOwner = _owner;
        emit OwnerNominated(_owner);
    }

    function acceptOwnership() external {
        require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
        emit OwnerChanged(owner, nominatedOwner);
        owner = nominatedOwner;
        nominatedOwner = address(0);
    }

    modifier onlyOwner {
        require(msg.sender == owner, "Only the contract owner may perform this action");
        _;
    }

    event OwnerNominated(address newOwner);
    event OwnerChanged(address oldOwner, address newOwner);
}


// Inheritance


// https://docs.synthetix.io/contracts/RewardsDistributionRecipient
contract RewardsDistributionRecipient is Owned {
    address public rewardsDistribution;

    function notifyRewardAmount(uint256 reward) external;

    modifier onlyRewardsDistribution() {
        require(msg.sender == rewardsDistribution, "Caller is not RewardsDistribution contract");
        _;
    }

    function setRewardsDistribution(address _rewardsDistribution) external onlyOwner {
        rewardsDistribution = _rewardsDistribution;
    }
}


contract TokenWrapper is ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    IERC20 public stakingToken;

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

    constructor(address _stakingToken) public {
        stakingToken = IERC20(_stakingToken);
    }

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

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

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

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


contract StakingRewards is TokenWrapper, RewardsDistributionRecipient {
    IERC20 public rewardsToken;

    uint256 public constant DURATION = 7 days;

    uint256 public periodFinish = 0;
    uint256 public rewardRate = 0;
    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);

    constructor(
        address _owner,
        address _rewardsToken, 
        address _stakingToken
    ) public TokenWrapper(_stakingToken) Owned(_owner) {
        rewardsToken = IERC20(_rewardsToken);
    }

    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;
            rewardsToken.safeTransfer(msg.sender, reward);
            emit RewardPaid(msg.sender, reward);
        }
    }

    function notifyRewardAmount(uint256 reward) external onlyRewardsDistribution updateReward(address(0)) {
        if (block.timestamp >= periodFinish) {
            rewardRate = reward.div(DURATION);
        } else {
            uint256 remaining = periodFinish.sub(block.timestamp);
            uint256 leftover = remaining.mul(rewardRate);
            rewardRate = reward.add(leftover).div(DURATION);
        }
        lastUpdateTime = block.timestamp;
        periodFinish = block.timestamp.add(DURATION);
        emit RewardAdded(reward);
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"address","name":"_stakingToken","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"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":"DURATION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","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":false,"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"nominateNewOwner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"nominatedOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"reward","type":"uint256"}],"name":"notifyRewardAmount","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"periodFinish","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","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":true,"inputs":[],"name":"rewardsDistribution","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rewardsToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_rewardsDistribution","type":"address"}],"name":"setRewardsDistribution","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"stakingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"payable":false,"stateMutability":"view","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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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe000000000000000000000000c011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f00000000000000000000000034a0216c5057bc18e5d34d4405284564efd759b2

-----Decoded View---------------
Arg [0] : _owner (address): 0xde910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [1] : _rewardsToken (address): 0xc011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f
Arg [2] : _stakingToken (address): 0x34a0216c5057bc18e5d34d4405284564efd759b2

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [1] : 000000000000000000000000c011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f
Arg [2] : 00000000000000000000000034a0216c5057bc18e5d34d4405284564efd759b2


Deployed ByteCode Sourcemap

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Swarm Source

bzzr://87be768b68397d569f14b37b446f70ed273134df91e3555eecbbba3ae1d84231
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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