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Claim195973352024-04-06 14:38:59692 days ago1712414339IN
0xcD4E247B...966aA658E
0 ETH0.0014573717.16663799
Unstake195453452024-03-30 7:38:59699 days ago1711784339IN
0xcD4E247B...966aA658E
0 ETH0.0029357419.4745333
Claim194350352024-03-14 18:32:23715 days ago1710441143IN
0xcD4E247B...966aA658E
0 ETH0.0041000448.29489295
Claim188016952023-12-16 22:49:23803 days ago1702766963IN
0xcD4E247B...966aA658E
0 ETH0.0041807640.98948356
Claim186860182023-11-30 17:50:47820 days ago1701366647IN
0xcD4E247B...966aA658E
0 ETH0.002447924
Claim184558682023-10-29 12:34:23852 days ago1698582863IN
0xcD4E247B...966aA658E
0 ETH0.0013774813.50532466
Stake184400392023-10-27 7:25:35854 days ago1698391535IN
0xcD4E247B...966aA658E
0 ETH0.0012750617.37670881
Stake184197242023-10-24 11:08:47857 days ago1698145727IN
0xcD4E247B...966aA658E
0 ETH0.0017404123.72240387
Claim184196862023-10-24 11:01:11857 days ago1698145271IN
0xcD4E247B...966aA658E
0 ETH0.0021293420.8767099
Stake183713382023-10-17 16:39:11864 days ago1697560751IN
0xcD4E247B...966aA658E
0 ETH0.000846211.53408336
Claim183712362023-10-17 16:18:35864 days ago1697559515IN
0xcD4E247B...966aA658E
0 ETH0.0015470415.16768833
Stake183219412023-10-10 18:47:59871 days ago1696963679IN
0xcD4E247B...966aA658E
0 ETH0.00059158.06234137
Claim183218622023-10-10 18:31:59871 days ago1696962719IN
0xcD4E247B...966aA658E
0 ETH0.00095819.39353468
Stake182762952023-10-04 9:34:59877 days ago1696412099IN
0xcD4E247B...966aA658E
0 ETH0.00046846.38445336
Stake182696092023-10-03 11:07:23878 days ago1696331243IN
0xcD4E247B...966aA658E
0 ETH0.000796137.40215537
Stake182410132023-09-29 11:16:23882 days ago1695986183IN
0xcD4E247B...966aA658E
0 ETH0.00053976.90464598
Claim182409892023-09-29 11:11:35882 days ago1695985895IN
0xcD4E247B...966aA658E
0 ETH0.000603057.10345361
Claim182339912023-09-28 11:39:47883 days ago1695901187IN
0xcD4E247B...966aA658E
0 ETH0.000615137.24578741
Stake181329932023-09-14 7:20:59897 days ago1694676059IN
0xcD4E247B...966aA658E
0 ETH0.0015956214.20028102
Stake169311042023-03-29 6:14:471066 days ago1680070487IN
0xcD4E247B...966aA658E
0 ETH0.002871524.512997
Claim168816332023-03-22 7:25:351073 days ago1679469935IN
0xcD4E247B...966aA658E
0 ETH0.0010163111.97125759
Stake168618392023-03-19 12:42:351076 days ago1679229755IN
0xcD4E247B...966aA658E
0 ETH0.0016715614.268123
Claim168617952023-03-19 12:33:351076 days ago1679229215IN
0xcD4E247B...966aA658E
0 ETH0.0019642814.4224755
Stake168617872023-03-19 12:31:591076 days ago1679229119IN
0xcD4E247B...966aA658E
0 ETH0.0016412413.14942292
Update167477732023-03-03 11:45:591092 days ago1677843959IN
0xcD4E247B...966aA658E
0 ETH0.0007556523.4829419
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xb44Bc0A9...4a72D266E
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
DAOFarm

Compiler Version
v0.8.14+commit.80d49f37

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

//SPDX-License-Identifier: MIT
pragma solidity =0.8.14;

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

contract DAOFarm is ReentrancyGuard {
    using SafeERC20 for IERC20;

    uint constant HUNDRED_PERCENT = 1e3;
    uint constant ACC_REWARD_MULTIPLIER = 1e36;
    uint constant UPDATE_PERIOD = 60;

    struct User {
        uint shares;
        uint rewardDebt;
        uint requestedUnstakeAt;
    }
    mapping (address => User) public users;

    IERC20 immutable public stakingToken;
    IERC20 immutable public rewardToken;
    address immutable public feeCollector1;
    address immutable public feeCollector2;
    uint immutable public rewardPerPeriod;
    uint immutable public cooldownPeriod;
    uint immutable public cooldownFee;
    uint immutable public cooldownFeeSplit;
    uint immutable public startTime;
    uint immutable public endTime;

    uint public totalShares;
    uint public totalClaimed;
    uint public accRewardPerShare;
    uint public lastUpdateTimestamp;
    
    event Stake(address userAddress, uint amount);
    event RequestUnstake(address userAddress, bool withoutClaim, uint timestamp);
    event Unstake(address userAddress, uint amount, uint fee);
    event Claim(address userAddress, uint reward);
    event Update(uint periodsPassed, uint totalShares, uint totalClaimed, uint accRewardPerShare, uint timestamp);

    modifier withUpdate() {
        update();
        _;
    }

    constructor(
        IERC20 _stakingToken,
        IERC20 _rewardToken,
        address _feeCollector1,
        address _feeCollector2,
        uint _rewardPerPeriod,
        uint _cooldownPeriod,
        uint _cooldownFee,
        uint _cooldownFeeSplit,
        uint _startTime,
        uint _endTime
    ) {
        require(address(_stakingToken) != address(0));
        require(address(_rewardToken) != address(0));
        require(_feeCollector1 != address(0));
        require(_feeCollector2 != address(0));
        require(_cooldownFee <= HUNDRED_PERCENT);
        require(_cooldownFeeSplit <= HUNDRED_PERCENT);
        require(_startTime > block.timestamp);
        require(_startTime < _endTime);

        stakingToken = _stakingToken;
        rewardToken = _rewardToken;
        feeCollector1 = _feeCollector1;
        feeCollector2 = _feeCollector2;
        rewardPerPeriod = _rewardPerPeriod;
        cooldownPeriod = _cooldownPeriod;
        cooldownFee = _cooldownFee;
        cooldownFeeSplit = _cooldownFeeSplit;
        startTime = _startTime;
        endTime = _endTime;
        lastUpdateTimestamp = _startTime;
    }
    
    // =================== EXTERNAL FUNCTIONS  =================== //

    /**
        Check whether some update periods have passed and if so, increase the pending reward of all users.
     */
    function update() public {
        uint currentTimestamp = block.timestamp;
        if (currentTimestamp > endTime) {
            currentTimestamp = endTime;
        }
        require(currentTimestamp > startTime, "before startTime");

        uint periodsPassed = (currentTimestamp - lastUpdateTimestamp) / UPDATE_PERIOD;
        if (periodsPassed > 0 && totalShares > 0) {
            uint reward = rewardPerPeriod * periodsPassed;
            accRewardPerShare += ACC_REWARD_MULTIPLIER * reward / totalShares;
            lastUpdateTimestamp += periodsPassed * UPDATE_PERIOD;
        }

        emit Update(periodsPassed, totalShares, totalClaimed, accRewardPerShare, block.timestamp);
    }

    /**
        Stake tokens.
        @param amount amount to stake
     */
    function stake(uint amount) external nonReentrant withUpdate {
        User storage user = users[msg.sender];
        require(amount > 0, "0 amount");
        require(user.requestedUnstakeAt == 0, "unstake requested");

        uint balanceBefore = stakingToken.balanceOf(address(this));
        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        uint receivedAmount = stakingToken.balanceOf(address(this)) - balanceBefore;

        user.shares += receivedAmount;
        user.rewardDebt += _calculateAbsoluteReward(receivedAmount);
        totalShares += receivedAmount;

        emit Stake(msg.sender, receivedAmount);
    }

    /**
        Enter the cooldown period for unstaking without any fee after the period passes.
        Users can't stake or claim while in the cooldown period.
        @param withoutClaim in case the pending rewards can't be claimed, there's still this option to request unstake without claiming
     */
    function requestUnstake(bool withoutClaim) external nonReentrant withUpdate {
        User storage user = users[msg.sender];
        require(user.requestedUnstakeAt == 0, "unstake requested already");
        _requestUnstake(withoutClaim);
    }

    /**
        Unstaking before the cooldown period ends causes a fee on the staked amount (it's free of charge if the farm staking has ended).
     */
    function unstake() external nonReentrant withUpdate {
        User storage user = users[msg.sender];

        if (user.requestedUnstakeAt == 0) {
            _requestUnstake(false);
        }

        uint unstakeAmount = user.shares;
        bool earlyUnstake = block.timestamp < user.requestedUnstakeAt + cooldownPeriod;
        uint fee;
        if (earlyUnstake) {
            fee = _applyPercentage(unstakeAmount, cooldownFee);
            uint feeSplit1 = _applyPercentage(fee, cooldownFeeSplit);
            uint feeSplit2 = fee - feeSplit1;
            stakingToken.safeTransfer(feeCollector1, feeSplit1);
            stakingToken.safeTransfer(feeCollector2, feeSplit2);
        }
        unstakeAmount -= fee;
    
        stakingToken.safeTransfer(msg.sender, unstakeAmount);
        delete users[msg.sender];

        emit Unstake(msg.sender, unstakeAmount, fee);
    }

    /**
        Claim all the pending rewards. 
    */
    function claim() external nonReentrant withUpdate returns (uint claimableReward) {
        claimableReward = getClaimableReward(msg.sender); 
        require(claimableReward > 0, "nothing to claim");
        _claim(msg.sender);
    }

    // =================== INTERNAL FUNCTIONS  =================== //

    function _claim(address userAddress) internal {
        User storage user = users[userAddress];

        uint claimableReward = getClaimableReward(userAddress);
        if (claimableReward > 0) {
            require(getRewardBalance() >= claimableReward, "not enough reward balance");
            user.rewardDebt += claimableReward;
            totalClaimed += claimableReward;
            rewardToken.safeTransfer(userAddress, claimableReward);
            emit Claim(userAddress, claimableReward);
        }
    }

    function _requestUnstake(bool withoutClaim) internal {
        User storage user = users[msg.sender];
        require(user.shares > 0, "nothing to unstake");

        if (!withoutClaim) {
            _claim(msg.sender);
        }

        user.requestedUnstakeAt = block.timestamp;
        totalShares -= user.shares;
        emit RequestUnstake(msg.sender, withoutClaim, block.timestamp);
    }

    // =================== VIEW FUNCTIONS  =================== //

    function getClaimableReward(address userAddress) public view returns (uint reward) {
        User storage user = users[userAddress];
        if (user.requestedUnstakeAt > 0) {
            return 0;
        }

        uint absoluteReward = _calculateAbsoluteReward(user.shares);
        reward = absoluteReward - user.rewardDebt;
    }

    function getRewardBalance() public view returns (uint rewardBalance) {
        uint balance = rewardToken.balanceOf(address(this));

        if (rewardToken != stakingToken) {
            return balance;
        } else {
            return balance - totalShares;
        }
    }

    function getFarmInfo(address userAddress) public view returns (IERC20, IERC20, uint, uint, uint, uint, uint, uint, uint, uint) {
        User storage user = users[userAddress];
        return (
            stakingToken,
            rewardToken,
            rewardPerPeriod,
            cooldownPeriod,
            cooldownFee,
            startTime,
            endTime,
            totalShares,
            user.shares,
            user.requestedUnstakeAt
        );
    }

    function _calculateAbsoluteReward(uint shares) private view returns (uint absoluteReward) {
        return accRewardPerShare * shares / ACC_REWARD_MULTIPLIER;
    }

    function _applyPercentage(uint value, uint percentage) internal pure returns (uint) {
        return value * percentage / HUNDRED_PERCENT;
    }
}

File 2 of 5 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied 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.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @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 making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.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 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'
        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) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - 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. 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
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)

pragma solidity ^0.8.0;

/**
 * @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 on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        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");

        (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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"contract IERC20","name":"_stakingToken","type":"address"},{"internalType":"contract IERC20","name":"_rewardToken","type":"address"},{"internalType":"address","name":"_feeCollector1","type":"address"},{"internalType":"address","name":"_feeCollector2","type":"address"},{"internalType":"uint256","name":"_rewardPerPeriod","type":"uint256"},{"internalType":"uint256","name":"_cooldownPeriod","type":"uint256"},{"internalType":"uint256","name":"_cooldownFee","type":"uint256"},{"internalType":"uint256","name":"_cooldownFeeSplit","type":"uint256"},{"internalType":"uint256","name":"_startTime","type":"uint256"},{"internalType":"uint256","name":"_endTime","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"bool","name":"withoutClaim","type":"bool"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"RequestUnstake","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Stake","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"Unstake","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"periodsPassed","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalShares","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalClaimed","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"accRewardPerShare","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"Update","type":"event"},{"inputs":[],"name":"accRewardPerShare","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claim","outputs":[{"internalType":"uint256","name":"claimableReward","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"cooldownFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"cooldownFeeSplit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"cooldownPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"endTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeCollector1","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeCollector2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"}],"name":"getClaimableReward","outputs":[{"internalType":"uint256","name":"reward","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"}],"name":"getFarmInfo","outputs":[{"internalType":"contract IERC20","name":"","type":"address"},{"internalType":"contract IERC20","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRewardBalance","outputs":[{"internalType":"uint256","name":"rewardBalance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"withoutClaim","type":"bool"}],"name":"requestUnstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"startTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalClaimed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"update","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"users","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"},{"internalType":"uint256","name":"requestedUnstakeAt","type":"uint256"}],"stateMutability":"view","type":"function"}]

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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.