Contract 0x7Ca29F0DB5Db8b88B332Aa1d67a2e89DfeC85E7E 2

 
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0x66c2b229ea7de79a350f97ed5c47bd06944d99bcb5d699484efeea8940279611Exit220412312021-12-02 7:15:076 hrs 32 mins ago0x474b5e6b9ec0993c6c942158cb23bebceb4fb764 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00327516
0xdddcd8cef8b4f5be3166e2951822aa8e0cac2b08396f44fb9ebf1b49be10c355Exit220265022021-12-01 21:52:4915 hrs 54 mins ago0x10a1ddb397051d4cfa7dabe04c865b823008008e IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.003602676
0xbaa51f3262a44bd17874228a56a10bb95b0ffbc08906edb07da6078ebba7523cExit220245192021-12-01 20:29:4617 hrs 17 mins ago0xbdb77c95eb8d82b6ea1f93a5912b78ef8b1e9624 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.0057036
0xb9b5fe22121840d40d2fb501771da20579f7a78fcc8599f358a86ff9ff9dfa12Exit220223452021-12-01 18:51:5818 hrs 55 mins ago0x0bbb50d69215922420282620a759a648fbd2c552 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00327516
0x40b29deb7d7f5588dd5d1304d2beb8e598545b028b87c608d9b28368c9e2f697Exit220221702021-12-01 18:45:5619 hrs 1 min ago0x77edce1fccbcff14d32998539b635a58bd03eafc IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.004985383048
0xb1f52ba2e73120387b69caccaa6970d6a28cb322bbf23a0d7b59df7084799a3fExit220166812021-12-01 15:01:5822 hrs 45 mins ago0xebe417a39bea9a4592df8ad309d7d83cee454e3a IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.0040129
0x33878cf299bc3b4fa38ef398648cb2ec06ff83984b390b8b1ece707147133f2bGet Reward220166792021-12-01 15:01:5422 hrs 45 mins ago0xebe417a39bea9a4592df8ad309d7d83cee454e3a IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.0037918
0xfc6ac983a5019fd2e308368c86b05f49fcf97c068fb8cf0583a8ae0d8b96f75aExit220086852021-12-01 10:05:141 day 3 hrs ago0x7accb50267bce10765171dc8b892e9d9d79398c1 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.004166976
0x177a200620e6242513887f239ed55c6229183a88ced42fb48a6c0845b82f19f7Exit220053862021-12-01 7:58:591 day 5 hrs ago0x906885e5a1e2e33d3430ed65fe5591702bc7ba71 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00378816
0xb4b4449333a182061a503f6e4c84313863a37668f74e8e58a09d03678876309cExit220048012021-12-01 7:38:531 day 6 hrs ago0x7405fe24003a50e4f4117d35e9b5a9f5e512fede IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00290916
0x5445a329648ac9c5702466e2c8880dbd65d3073b1c94e629c3b0ea614c2a8c2eGet Reward219957822021-12-01 2:10:421 day 11 hrs ago0x6530d9a19e2c2e737b7ecc4facf51df979be344e IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00140604
0x8d0a1a95afdb0c39b976f4fd2ceb455d5574d48a78cb9634b459687b4d87305eExit219957722021-12-01 2:10:181 day 11 hrs ago0x6530d9a19e2c2e737b7ecc4facf51df979be344e IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00327516
0x4f0dbb309d4e63035ec745735469503ac9d0400a1b3b59d527288e55ef4b7e4fExit219792072021-11-30 16:01:211 day 21 hrs ago0x89321250b8ff18a56ec8af78f74bb4989c0a2a40 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00240774
0x87a6b04dbb023346ccb44674c64987d2b2d0357d103bad6969a7b8068d0a64cdGet Reward219791832021-11-30 16:00:291 day 21 hrs ago0x89321250b8ff18a56ec8af78f74bb4989c0a2a40 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00190908
0xefd9bed48107595c58e9e85306c2be504448c351343cec596dc3223f3f53a8c8Exit219758342021-11-30 13:44:022 days 3 mins ago0xcfcf1783f1000ef5ee760c57abc1c7a47bf653a3 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.007205352
0x2183826b191c402d5f627a6bb3ec40d2c0ffc706308f3508aae659972e37099fExit219690632021-11-30 9:28:402 days 4 hrs ago0xc155efbeb10ad1debedcd4f05dc0e669e5ba7e25 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00290916
0x3c4cac7f871ddcd0a467fef3ad996706aaeda7acf37d577f7543881e6fb4b8d1Exit219685872021-11-30 9:11:502 days 4 hrs ago0x08bae038ce7e2587a34ff866f6c5c35cd76363db IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.003914432
0xf0e8030e426c65156df2e2eccb397d1374d7072833b1d2f13b107afec6c0e0e6Exit219657732021-11-30 7:34:142 days 6 hrs ago0xe2344dc8dc7eb5e1c6f51cb3b6258766592683c8 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00327516
0xec7c30283e3e1b47bca8c7d7f75e4363d6f45a683630b970a3746bb3f2de126eExit219165992021-11-28 23:20:423 days 14 hrs ago0x9b7874a1eb2a06059084a3886899005f68353926 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.007639456
0x0d64b709f694610b9c3700eb722f180e2d1249728214698c2a268e46e8443635Exit218585952021-11-27 11:27:225 days 2 hrs ago0x2ba590500cb282548184ab261458c74cb8858a4a IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00290916
0x00d7c71fc9d175c95b0e926ddd66027d46854105b845994583686ab8698586c3Exit218542312021-11-27 8:46:475 days 5 hrs ago0xa34039f6a8efc7bc921d2212727df3571f9a0dee IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00378816
0x7f7c535a256b79670171666f0a9730ba6613d0b0c81fb382e0e35d9d6f86f22bExit218368632021-11-26 22:23:585 days 15 hrs ago0x4f06152ae4503672e451d32711d3b85cf88bac5d IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.02399168
0x81ee0679279f7ba1e90e24c1471f2e7f9f1868c39a414a0618e20bdc2ef00a9fExit218364822021-11-26 22:10:565 days 15 hrs ago0xce33d8cfc890f6e41ffe73f5e621c882f12d5115 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00240774
0xf721f2c26a683e81dbac4978959a69c5608836ef46c99682606f1d58b6f7f10fGet Reward218364762021-11-26 22:10:405 days 15 hrs ago0xce33d8cfc890f6e41ffe73f5e621c882f12d5115 IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.00227508
0x5db456c9dfa8f02848feeee993f93f29b19dfb028289289e55028b81acceadb8Exit218296142021-11-26 17:38:185 days 20 hrs ago0x4176e4a8b1fa998da1f18440a312d434f8bf1a5f IN  0x7ca29f0db5db8b88b332aa1d67a2e89dfec85e7e0 MATIC0.017804352
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0xc07d5a9a2244acbe66197adbb947e681fa1d94b59501f73336d6d9e3ced702b6134354212021-04-18 17:03:54227 days 20 hrs ago 0x5eec262b05a57da9beb5fe96a34aa4ed0c5e029f  Contract Creation0 MATIC
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x4a73218ef2e820987c59f838906a82455f42d98b

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 polygonscan.com on 2021-06-16
*/

/**
 *Submitted for verification at Etherscan.io on 2020-09-16
*/

pragma solidity ^0.5.16;

/**
 * @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 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.
     *
     * > 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 Optional functions from the ERC20 standard.
 */
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
     * these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei.
     *
     * > Note that this information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * `IERC20.balanceOf` and `IERC20.transfer`.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}


/**
 * @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;
    }
}

/**
 * @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);
        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");
        }
    }
}

/**
 * @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");
    }
}

// Inheritancea
interface IStakingRewards {
    // Views
    function lastTimeRewardApplicable() external view returns (uint256);

    function rewardPerToken() external view returns (uint256);

    function earned(address account) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    // Mutative

    function stake(uint256 amount) external;

    function withdraw(uint256 amount) external;

    function getReward() external;

    function exit() external;
}

contract RewardsDistributionRecipient {
    address public rewardsDistribution;

    function notifyRewardAmount(uint256 reward, uint256 duration) external;

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

contract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    /* ========== STATE VARIABLES ========== */

    IERC20 public rewardsToken;
    IERC20 public stakingToken;
    uint256 public periodFinish = 0;
    uint256 public rewardRate = 0;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;

    mapping(address => uint256) public userRewardPerTokenPaid;
    mapping(address => uint256) public rewards;

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

    /* ========== CONSTRUCTOR ========== */

    constructor(
        address _rewardsDistribution,
        address _rewardsToken,
        address _stakingToken
    ) public {
        rewardsToken = IERC20(_rewardsToken);
        stakingToken = IERC20(_stakingToken);
        rewardsDistribution = _rewardsDistribution;
    }

    /* ========== VIEWS ========== */

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

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

    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 _balances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]);
    }

    /* ========== MUTATIVE FUNCTIONS ========== */

    function stakeWithPermit(uint256 amount, uint deadline, uint8 v, bytes32 r, bytes32 s) external nonReentrant updateReward(msg.sender) {
        require(amount > 0, "Cannot stake 0");
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);

        // permit
        IUniswapV2ERC20(address(stakingToken)).permit(msg.sender, address(this), amount, deadline, v, r, s);

        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        emit Staked(msg.sender, amount);
    }

    function stake(uint256 amount) external nonReentrant updateReward(msg.sender) {
        require(amount > 0, "Cannot stake 0");
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount) public nonReentrant updateReward(msg.sender) {
        require(amount > 0, "Cannot withdraw 0");
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = _balances[msg.sender].sub(amount);
        stakingToken.safeTransfer(msg.sender, amount);
        emit Withdrawn(msg.sender, amount);
    }

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

    function exit() external {
        withdraw(_balances[msg.sender]);
        getReward();
    }

    /* ========== RESTRICTED FUNCTIONS ========== */

    function notifyRewardAmount(uint256 reward, uint256 rewardsDuration) external onlyRewardsDistribution updateReward(address(0)) {
        require(block.timestamp.add(rewardsDuration) >= periodFinish, "Cannot reduce existing period");

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

        // Ensure the provided reward amount is not more than the balance in the contract.
        // This keeps the reward rate in the right range, preventing overflows due to
        // very high values of rewardRate in the earned and rewardsPerToken functions;
        // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow.
        uint balance = rewardsToken.balanceOf(address(this));
        require(rewardRate <= balance.div(rewardsDuration), "Provided reward too high");

        lastUpdateTime = block.timestamp;
        periodFinish = block.timestamp.add(rewardsDuration);
        emit RewardAdded(reward, periodFinish);
    }

    /* ========== MODIFIERS ========== */

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

    /* ========== EVENTS ========== */

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

interface IUniswapV2ERC20 {
    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
}

Contract Security Audit

Contract ABI

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IERC20","name":"","type":"address"}],"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":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"stakeWithPermit","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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Swarm Source

bzzr://c322ba88562bdec7ebb3d5d1adca9437e9d31218e4f8288f93c7a548433b0b3b
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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