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0x1906eDbDae2a45fab3c3144A45771Fa033930454
 

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Withdraw All202206512024-07-02 18:34:59122 days ago1719945299IN
0x1906eDbD...033930454
0 ETH0.000371535.99971415
Withdraw All201294752024-06-20 0:50:11135 days ago1718844611IN
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0 ETH0.000347715.61501187
Withdraw All197870952024-05-03 4:06:35183 days ago1714709195IN
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0 ETH0.000424715.3743185
Withdraw All196910262024-04-19 17:39:47196 days ago1713548387IN
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0 ETH0.0008115510.26951591
Withdraw All195159812024-03-26 3:35:59221 days ago1711424159IN
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0 ETH0.0015383619.46662033
Withdraw All194464352024-03-16 9:01:35231 days ago1710579695IN
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0 ETH0.0025961332.85166135
Withdraw All193261192024-02-28 12:47:23248 days ago1709124443IN
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0 ETH0.0042210853.4138564
Withdraw All190813362024-01-25 4:45:59282 days ago1706157959IN
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0 ETH0.000913511.55954921
Deposit190756832024-01-24 9:44:35283 days ago1706089475IN
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0 ETH0.0007237611.4522047
Deposit190750442024-01-24 7:35:47283 days ago1706081747IN
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0 ETH0.000961029.9157116
Withdraw All190564602024-01-21 16:33:47286 days ago1705854827IN
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0 ETH0.0013648217.27064361
Withdraw All190315582024-01-18 5:07:11289 days ago1705554431IN
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0 ETH0.0019189924.28302524
Withdraw All190189902024-01-16 10:56:11291 days ago1705402571IN
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0 ETH0.003071938.87206534
Deposit190115722024-01-15 10:05:11292 days ago1705313111IN
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0 ETH0.0018446619.03539344
Withdraw All189929222024-01-12 19:32:11294 days ago1705087931IN
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0 ETH0.0020737626.24158381
Deposit189906582024-01-12 11:56:35295 days ago1705060595IN
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0 ETH0.0018252518.83513979
Deposit189891452024-01-12 6:51:23295 days ago1705042283IN
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0 ETH0.0009023613.93653186
Deposit189886752024-01-12 5:16:59295 days ago1705036619IN
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0 ETH0.0011880113.78716852
Deposit189853492024-01-11 18:05:11295 days ago1704996311IN
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0 ETH0.002970528.76163855
Withdraw All189826492024-01-11 8:59:11296 days ago1704963551IN
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0 ETH0.0015094524.37507364
Deposit189647142024-01-08 20:38:23298 days ago1704746303IN
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0 ETH0.0025464826.27756932
Withdraw All189629762024-01-08 14:47:11299 days ago1704725231IN
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0 ETH0.0017889522.63748724
Deposit189389142024-01-05 5:11:11302 days ago1704431471IN
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0 ETH0.0013432913.64199409
Withdraw All189359622024-01-04 19:11:23302 days ago1704395483IN
0x1906eDbD...033930454
0 ETH0.001727321.8573833
Deposit189322492024-01-04 6:42:11303 days ago1704350531IN
0x1906eDbD...033930454
0 ETH0.001408113.63071904
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Contract Source Code Verified (Exact Match)

Contract Name:
FameStaking

Compiler Version
v0.8.22+commit.4fc1097e

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
File 1 of 8 : FameStaking.sol
// SPDX-License-Identifier: MIT

pragma solidity =0.8.22;

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { uncheckedInc } from "./utils/Unchecked.sol";


/**
 * Stake and lock FAME and EARN FAME
 */
contract FameStaking is Ownable {

    using SafeERC20 for IERC20;
    
    // EVENTS
    event Withdraw(address indexed user, uint256 amount);
    event Deposit(address indexed user, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 amount);
    
   
    // ERROR
    error SetupError();
    error NotYet();
    error NoShares();
    error Locked();
    error InvalidAmount();
    error NotEnoughTokens();
    error NotEnoughReward();

    address public token;
    uint public lastUpdateTime;
    uint public totalAmount;
    uint public tokenPerSec;
    uint public accTokenPerShare;
    uint constant public ACC_PRECISION = 1e18;
    uint constant public LOCK_PERIOD = 7 days;

    mapping(address => UserInfo) public userInfos;

    struct UserInfo {
        uint amount;
        uint lockTimeStamp;
        uint pendingReward;
        uint rewardDebt;
    }
    
    constructor(
        address _token, 
        uint _startTime, 
        uint _tokenPerSec
    )
        Ownable(msg.sender)
    {
        if(_startTime < block.timestamp) revert SetupError();

        lastUpdateTime = _startTime;
        token = _token;
        tokenPerSec = _tokenPerSec;
    }

    /*
     * @notice set token per sec, onlyOwner. will update pool before execution.
     */
    function setTokenPerSec(uint _tokenPerSec) external onlyOwner {
        update();
        tokenPerSec = _tokenPerSec;
    }
    
    /*
     * @notice update pool status: accTokenPerShare & lastUpdateTime
     */
    function update() public  {
        if(lastUpdateTime >= block.timestamp) return;
        if(totalAmount == 0) {
            lastUpdateTime = block.timestamp;
            return;
        }

        uint256 multiplier = _getMultiplier(lastUpdateTime, block.timestamp);
        
        uint256 pending = multiplier * tokenPerSec;
        if(pending > 0) {
            accTokenPerShare = accTokenPerShare + (pending * ACC_PRECISION) / totalAmount;
            
            lastUpdateTime = block.timestamp;
        }
    }


    function _getMultiplier(uint _lastUpdateTime, uint _now) internal pure returns (uint) {
        if(_lastUpdateTime >= _now) return 0;
        return _now - _lastUpdateTime;
    }


    /*
     * @notice Deposit staked tokens
     * @param _amount: amount to withdraw (in rewardToken)
     */
    function deposit(uint256 _amount) external {
        UserInfo storage user = userInfos[msg.sender];
        
        update();
        
        if (user.amount > 0) {
            uint256 pending = user.amount * accTokenPerShare / ACC_PRECISION - user.rewardDebt;
            if (pending > 0) {
                user.pendingReward = user.pendingReward + pending;
            }
        }

        if (_amount > 0) {
            user.amount = user.amount + _amount;
            totalAmount = totalAmount + _amount;
            IERC20(token).safeTransferFrom(address(msg.sender), address(this), _amount);
        }
        user.rewardDebt = user.amount * accTokenPerShare / ACC_PRECISION;
        user.lockTimeStamp = block.timestamp;
        
        emit Deposit(msg.sender, _amount);
    }

    
    /*
     * @notice internal function to withdraw staked tokens and collect reward tokens
     * @param _amount: amount to withdraw (in rewardToken)
     */
    function withdraw(uint256 _amount) internal {
        if(userInfos[msg.sender].amount == 0) revert NoShares();

        UserInfo storage user = userInfos[msg.sender];
        if(user.lockTimeStamp + LOCK_PERIOD > block.timestamp) revert Locked();
        if(user.amount < _amount) revert InvalidAmount();

        update();

        if (_amount > 0) {
            if(totalAmount < _amount) 
                revert InvalidAmount();
            uint256 pending = user.amount * accTokenPerShare / ACC_PRECISION - user.rewardDebt + user.pendingReward;
            // if not enough to distribute reward
            if(pending > _getRewardTokenBalance()) 
                revert NotEnoughReward();
            
            totalAmount = totalAmount - _amount;
            user.amount = user.amount - _amount;
            user.pendingReward = 0;
            if(user.amount == 0) user.lockTimeStamp = 0;

            IERC20(token).safeTransfer(address(msg.sender), _amount + pending);
        }

        user.rewardDebt = user.amount * accTokenPerShare / ACC_PRECISION;

        emit Withdraw(msg.sender, _amount);
    }

    /*
     * @notice Withdraw and collect reward. Always withdraw all staked amount.
     */
    function withdrawAll() external {
        UserInfo memory user = userInfos[msg.sender];
        withdraw(user.amount);
    }

    
    /*
     * @notice View function to check pending reward
     * @param _user: user address
     * @return Pending reward for a given user
     */
    function getPendingReward(address _user) external view returns (uint256) {
        UserInfo storage user = userInfos[_user];
        // uint256 stakedTokenSupply = stakedToken.balanceOf(address(this));
        if (block.timestamp > lastUpdateTime && totalAmount != 0) {
            uint256 multiplier = _getMultiplier(lastUpdateTime, block.timestamp);
            uint256 reward = multiplier * tokenPerSec;
            uint256 adjustedTokenPerShare =
                accTokenPerShare + reward * ACC_PRECISION / totalAmount;
            return user.pendingReward + user.amount * adjustedTokenPerShare / ACC_PRECISION - user.rewardDebt;
        } else {
            return user.pendingReward + user.amount * accTokenPerShare / ACC_PRECISION - user.rewardDebt;
        }
    }
    
    
    function _getRewardTokenBalance() internal view returns (uint256 rewardBalance) {
        rewardBalance = IERC20(token).balanceOf(address(this));
        if(rewardBalance >= totalAmount) {
            rewardBalance = rewardBalance - totalAmount;
        }else {
            rewardBalance = 0;
        }
        
    }

    /*
     * @notice Withdraw staked tokens without caring about rewards rewards
     * @dev Needs to be for emergency.
     */
    function emergencyWithdraw() external {
        if(lastUpdateTime > block.timestamp) revert NotYet();
        if(userInfos[msg.sender].amount == 0) revert NoShares();

        UserInfo storage user = userInfos[msg.sender];
        if(user.lockTimeStamp + LOCK_PERIOD > block.timestamp) revert Locked();        

        uint256 amountToTransfer = user.amount;
        if(totalAmount < amountToTransfer) revert NotEnoughTokens();

        totalAmount = totalAmount - amountToTransfer;
        user.amount = 0;
        user.pendingReward = 0;
        user.rewardDebt = 0;
        user.lockTimeStamp = 0;

        if (amountToTransfer > 0) {
            IERC20(token).safeTransfer(address(msg.sender), amountToTransfer);
        }

        emit EmergencyWithdraw(msg.sender, user.amount);
    }


    /*
     * @notice Stop rewards
     * @dev Only callable by owner. Needs to be for emergency.
     */
    function emergencyRewardWithdraw(uint256 _amount) external onlyOwner {
        if(_getRewardTokenBalance() < _amount) revert NotEnoughTokens();

        IERC20(token).safeTransfer(msg.sender, _amount);
    }
    
    

    

}

File 2 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

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

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 3 of 8 : IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

File 4 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

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

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

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

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

File 5 of 8 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../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;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}

File 6 of 8 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

File 7 of 8 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

File 8 of 8 : Unchecked.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.22;

function uncheckedInc(uint256 i) pure returns (uint256) {
    unchecked {
        return i + 1;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "remappings": [
    "forge-std/=lib/forge-std/src/",
    "script/=script/",
    "test/=contracts/test/",
    "ds-test/=lib/forge-std/lib/ds-test/src/"
  ],
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_startTime","type":"uint256"},{"internalType":"uint256","name":"_tokenPerSec","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[],"name":"Locked","type":"error"},{"inputs":[],"name":"NoShares","type":"error"},{"inputs":[],"name":"NotEnoughReward","type":"error"},{"inputs":[],"name":"NotEnoughTokens","type":"error"},{"inputs":[],"name":"NotYet","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"SetupError","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"ACC_PRECISION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LOCK_PERIOD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"accTokenPerShare","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"emergencyRewardWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getPendingReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenPerSec","type":"uint256"}],"name":"setTokenPerSec","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenPerSec","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"update","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userInfos","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"lockTimeStamp","type":"uint256"},{"internalType":"uint256","name":"pendingReward","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdrawAll","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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

0000000000000000000000006bfdb6f4e65ead27118592a41eb927cea695619800000000000000000000000000000000000000000000000000000000657aa7810000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _token (address): 0x6bfDB6f4E65Ead27118592A41eB927cEa6956198
Arg [1] : _startTime (uint256): 1702537089
Arg [2] : _tokenPerSec (uint256): 0

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000006bfdb6f4e65ead27118592a41eb927cea6956198
Arg [1] : 00000000000000000000000000000000000000000000000000000000657aa781
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.