AVAX Price: $26.52 (+5.47%)
Gas: 2 nAVAX
 

Overview

AVAX Balance

Avalanche C-Chain LogoAvalanche C-Chain LogoAvalanche C-Chain Logo590.792283550285384 AVAX

AVAX Value

$15,669.38 (@ $26.52/AVAX)

Token Holdings

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Stake571179762025-02-10 14:20:2915 hrs ago1739197229IN
0xd3e653A9...140B697C4
0 AVAX0.000156671.15
Withdraw570833042025-02-09 21:19:5632 hrs ago1739135996IN
0xd3e653A9...140B697C4
0 AVAX0.000140831.06929667
Withdraw570764532025-02-09 17:42:3735 hrs ago1739122957IN
0xd3e653A9...140B697C4
0 AVAX0.000171911.5
Stake570679252025-02-09 13:32:3139 hrs ago1739107951IN
0xd3e653A9...140B697C4
0 AVAX0.000181011.51951878
Withdraw570679022025-02-09 13:31:5139 hrs ago1739107911IN
0xd3e653A9...140B697C4
0 AVAX0.000211521.60601838
Get Reward570678982025-02-09 13:31:4239 hrs ago1739107902IN
0xd3e653A9...140B697C4
0 AVAX0.000107331.67865976
Stake570678122025-02-09 13:29:2439 hrs ago1739107764IN
0xd3e653A9...140B697C4
0 AVAX0.000183441.53991998
Withdraw570677882025-02-09 13:28:4739 hrs ago1739107727IN
0xd3e653A9...140B697C4
0 AVAX0.000187231.63370889
Stake570387122025-02-08 22:55:372 days ago1739055337IN
0xd3e653A9...140B697C4
0 AVAX0.000238252
Withdraw570386822025-02-08 22:54:482 days ago1739055288IN
0xd3e653A9...140B697C4
0 AVAX0.000310822.36
Stake570386652025-02-08 22:54:162 days ago1739055256IN
0xd3e653A9...140B697C4
0 AVAX0.000204331.5
Stake569192022025-02-06 12:08:284 days ago1738843708IN
0xd3e653A9...140B697C4
0 AVAX0.000310822.549079
Get Reward569139602025-02-06 9:26:554 days ago1738834015IN
0xd3e653A9...140B697C4
0 AVAX0.000162622.5433134
Stake568507962025-02-05 1:54:386 days ago1738720478IN
0xd3e653A9...140B697C4
0 AVAX0.000184071.35128148
Stake568416582025-02-04 21:34:236 days ago1738704863IN
0xd3e653A9...140B697C4
0 AVAX0.000405122.97390796
Stake568224012025-02-04 13:28:436 days ago1738675723IN
0xd3e653A9...140B697C4
0 AVAX0.00014031.02997709
Get Reward568156062025-02-04 10:18:226 days ago1738664302IN
0xd3e653A9...140B697C4
0 AVAX0.000074171.16
Stake568155932025-02-04 10:18:056 days ago1738664285IN
0xd3e653A9...140B697C4
0 AVAX0.00015241.25
Get Reward568153412025-02-04 10:10:306 days ago1738663830IN
0xd3e653A9...140B697C4
0 AVAX0.000159852.5
Get Reward567955282025-02-04 0:55:237 days ago1738630523IN
0xd3e653A9...140B697C4
0 AVAX0.000163352.55473896
Stake567863362025-02-03 21:01:307 days ago1738616490IN
0xd3e653A9...140B697C4
0 AVAX0.000192091.41
Withdraw567384012025-02-03 1:20:138 days ago1738545613IN
0xd3e653A9...140B697C4
0 AVAX0.000380492.99043211
Stake566726682025-02-01 18:08:479 days ago1738433327IN
0xd3e653A9...140B697C4
0 AVAX0.000293752.5
Get Reward566726112025-02-01 18:06:549 days ago1738433214IN
0xd3e653A9...140B697C4
0 AVAX0.000159852.5
Stake566620462025-02-01 12:45:459 days ago1738413945IN
0xd3e653A9...140B697C4
0 AVAX0.00033122.51270365
View all transactions

Latest 25 internal transactions (View All)

Parent Transaction Hash Block From To
570678982025-02-09 13:31:4239 hrs ago1739107902
0xd3e653A9...140B697C4
0.00134634 AVAX
569139602025-02-06 9:26:554 days ago1738834015
0xd3e653A9...140B697C4
0.00007287 AVAX
568815142025-02-05 16:57:055 days ago1738774625
0xd3e653A9...140B697C4
0.00000054 AVAX
568156062025-02-04 10:18:226 days ago1738664302
0xd3e653A9...140B697C4
0.03467822 AVAX
568153412025-02-04 10:10:306 days ago1738663830
0xd3e653A9...140B697C4
0.05038756 AVAX
567955282025-02-04 0:55:237 days ago1738630523
0xd3e653A9...140B697C4
0.32663019 AVAX
566726112025-02-01 18:06:549 days ago1738433214
0xd3e653A9...140B697C4
0.00626294 AVAX
565184092025-01-29 10:44:0812 days ago1738147448
0xd3e653A9...140B697C4
0.03545047 AVAX
564629162025-01-28 6:19:2913 days ago1738045169
0xd3e653A9...140B697C4
0.01975063 AVAX
564524382025-01-28 0:38:1214 days ago1738024692
0xd3e653A9...140B697C4
0.24912404 AVAX
563736442025-01-26 10:11:4715 days ago1737886307
0xd3e653A9...140B697C4
0.10551041 AVAX
563674562025-01-26 6:50:5315 days ago1737874253
0xd3e653A9...140B697C4
0.01493906 AVAX
562992712025-01-24 18:54:1817 days ago1737744858
0xd3e653A9...140B697C4
0.01589643 AVAX
562221302025-01-23 4:32:2419 days ago1737606744
0xd3e653A9...140B697C4
0.02496381 AVAX
562105872025-01-22 22:33:1219 days ago1737585192
0xd3e653A9...140B697C4
500 AVAX
562105412025-01-22 22:31:5019 days ago1737585110
0xd3e653A9...140B697C4
1 AVAX
561458622025-01-21 14:19:1920 days ago1737469159
0xd3e653A9...140B697C4
0.01501379 AVAX
560882912025-01-20 12:09:3321 days ago1737374973
0xd3e653A9...140B697C4
9.17912054 AVAX
560267612025-01-19 8:56:5022 days ago1737277010
0xd3e653A9...140B697C4
0.01447838 AVAX
559110652025-01-16 23:34:2625 days ago1737070466
0xd3e653A9...140B697C4
0.01630199 AVAX
559036202025-01-16 19:44:1925 days ago1737056659
0xd3e653A9...140B697C4
0 AVAX
558994072025-01-16 17:34:5225 days ago1737048892
0xd3e653A9...140B697C4
0.00000945 AVAX
558567962025-01-15 20:58:0426 days ago1736974684
0xd3e653A9...140B697C4
0.00002395 AVAX
558006932025-01-14 16:34:1327 days ago1736872453
0xd3e653A9...140B697C4
0.01329766 AVAX
557895292025-01-14 11:00:0227 days ago1736852402
0xd3e653A9...140B697C4
0.00000021 AVAX
View All Internal Transactions
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Contract Source Code Verified (Exact Match)

Contract Name:
RewardDistributor

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 200 runs

Other Settings:
shanghai EvmVersion
File 1 of 9 : RewardDistributor.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.19;

import {LightweightOwnable} from "../core/LightweightOwnable.sol";
import {IERC20} from "../../lib/open-zeppelin/token/ERC20/IERC20.sol";
import {SafeERC20} from "../../lib/open-zeppelin/token/ERC20/utils/SafeERC20.sol";

/**
 * @title Contract for distributing ETH rewards for incentivized August Pools.
 */
contract RewardDistributor is LightweightOwnable {
    using SafeERC20 for IERC20;

    uint256 private constant PRECISION_FACTOR = 1e18;

    IERC20 public immutable stakingToken;
    uint256 public rewardsPerSecond;
    uint256 public totalStaked;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;

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

    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event RewardPaid(address indexed user, uint256 reward);
    event RewardRateUpdated(uint256 newRate);
    event Received(address indexed sender, uint256 value);

    /**
     * @notice Constructor.
     * @param ownerAddr The address of the owner.
     * @param _rewardsPerSecond The amount of ETH rewards to distribute per second.
     * @param _stakingToken The address of the ERC20 token used for staking.
     */
    constructor(
        address ownerAddr,
        uint256 _rewardsPerSecond,
        IERC20 _stakingToken
    ) {
        rewardsPerSecond = _rewardsPerSecond;
        lastUpdateTime = block.timestamp;
        stakingToken = _stakingToken;
        _transferOwnership(ownerAddr);
    }

    /**
     * @notice Allow the contract to receive ETH.
     */
    receive() external payable {
        emit Received(msg.sender, msg.value);
    }

    /**
     * @notice Update the reward rate.
     */
    function setRewardRate(uint256 _rewardsPerSecond) external onlyOwner {
        rewardsPerSecond = _rewardsPerSecond;
        emit RewardRateUpdated(_rewardsPerSecond);
    }

    /**
     * @notice Stake tokens.
     */
    function stake(uint256 amount) external nonReentrant {
        require(amount > 0, "Amount cannot be zero");
        _updateReward(msg.sender);
        totalStaked += amount;
        balanceOf[msg.sender] += amount;
        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        emit Staked(msg.sender, amount);
    }

    /**
     * @notice Withdraw staked tokens.
     */
    function withdraw(uint256 amount) external nonReentrant {
        require(amount > 0, "Amount cannot be zero");
        require(balanceOf[msg.sender] >= amount, "Amount mismatch");
        _updateReward(msg.sender);
        totalStaked -= amount;
        balanceOf[msg.sender] -= amount;
        stakingToken.safeTransfer(msg.sender, amount);
        emit Withdrawn(msg.sender, amount);
    }

    /**
     * @notice Emergency withdraw of avax from the contract.
     */

    function emergencyWithdraw() external onlyOwner {
        (bool success, ) = msg.sender.call{value: address(this).balance}("");
        require(success, "ETH transfer failed");
    }

    /**
     * @notice Claim rewards.
     */
    function getReward() external nonReentrant {
        _updateReward(msg.sender);
        uint256 reward = rewards[msg.sender];
        if (reward > 0) {
            rewards[msg.sender] = 0;
            (bool success, ) = msg.sender.call{value: reward}("");
            require(success, "ETH transfer failed");
            emit RewardPaid(msg.sender, reward);
        }
    }

    /**
     * @notice Calculate the earned rewards for an account.
     */
    function earned(address account) public view returns (uint256) {
        return
            ((balanceOf[account] *
                (_rewardPerToken() - userRewardPerTokenPaid[account])) /
                PRECISION_FACTOR) + rewards[account];
    }

    /**
     * @notice Update reward state for an account.
     */
    function _updateReward(address account) private {
        rewardPerTokenStored = _rewardPerToken();
        lastUpdateTime = block.timestamp;
        if (account != address(0)) {
            rewards[account] = earned(account);
            userRewardPerTokenPaid[account] = rewardPerTokenStored;
        }
    }

    /**
     * @notice Calculate the reward per token.
     */
    function _rewardPerToken() private view returns (uint256) {
        if (totalStaked == 0) {
            return rewardPerTokenStored;
        }
        return
            rewardPerTokenStored +
            (((block.timestamp - lastUpdateTime) *
                rewardsPerSecond *
                PRECISION_FACTOR) / totalStaked);
    }
}

File 2 of 9 : LightweightOwnable.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.19;

import "./interfaces/IOwnable.sol";
import {BaseReentrancyGuard} from "../core/BaseReentrancyGuard.sol";
import {BaseOwnable} from "../core/BaseOwnable.sol";

/**
 * @title Lightweight version of the ownership contract. This contract has a reentrancy guard.
 */
abstract contract LightweightOwnable is IOwnable, BaseReentrancyGuard, BaseOwnable {
    /**
     * @notice Transfers ownership of the contract to the account specified.
     * @param newOwner The address of the new owner.
     */
    function transferOwnership(address newOwner) external virtual nonReentrant onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @notice Gets the owner of the contract.
     * @return address The address who owns the contract.
     */
    function owner() external view virtual returns (address) {
        return _owner;
    }    
}

File 3 of 9 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

File 4 of 9 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.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));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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");
        }
    }
}

File 5 of 9 : IOwnable.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.19;

interface IOwnable {
    function transferOwnership(address newOwner) external;
    function owner() external view returns (address);
}

File 6 of 9 : BaseReentrancyGuard.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.19;

/**
 * @title Base reentrancy guard. This is constructor-less implementation for both proxies and standalone contracts.
 */
abstract contract BaseReentrancyGuard {
    error ReentrantCall();
    
    uint256 internal constant _REENTRANCY_NOT_ENTERED = 1;
    uint256 internal constant _REENTRANCY_ENTERED = 2;

    uint256 internal _reentrancyStatus;

    /**
     * @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() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        if (_reentrancyStatus == _REENTRANCY_ENTERED) revert ReentrantCall();

        // Any calls to nonReentrant after this point will fail
        _reentrancyStatus = _REENTRANCY_ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _reentrancyStatus = _REENTRANCY_NOT_ENTERED;
    }
}

File 7 of 9 : BaseOwnable.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.19;

abstract contract BaseOwnable {
    error OwnerOnly();

    address internal _owner;

    /**
     * @notice Triggers when contract ownership changes.
     * @param previousOwner The previous owner of the contract.
     * @param newOwner The new owner of the contract.
     */
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        if (msg.sender != _owner) revert OwnerOnly();
        _;
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 8 of 9 : IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @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.
 */
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].
     */
    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 9 of 9 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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://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/v0.5.11/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
        }
    }
}

Settings
{
  "remappings": [
    "forge-std/=lib/forge-std/src/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "murky/=lib/murky/",
    "open-zeppelin/=lib/open-zeppelin/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": false,
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"ownerAddr","type":"address"},{"internalType":"uint256","name":"_rewardsPerSecond","type":"uint256"},{"internalType":"contract IERC20","name":"_stakingToken","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"OwnerOnly","type":"error"},{"inputs":[],"name":"ReentrantCall","type":"error"},{"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":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Received","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newRate","type":"uint256"}],"name":"RewardRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getReward","outputs":[],"stateMutability":"nonpayable","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":"rewardPerTokenStored","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsPerSecond","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardsPerSecond","type":"uint256"}],"name":"setRewardRate","outputs":[],"stateMutability":"nonpayable","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":"totalStaked","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":[{"internalType":"address","name":"","type":"address"}],"name":"userRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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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)

000000000000000000000000926d01e50467539071bbe90694ca73f7a7df355e00000000000000000000000000000000000000000000000000009016fbe88580000000000000000000000000b2bfb52cfc40584ac4e9e2b36a5b8d6554a56e0b

-----Decoded View---------------
Arg [0] : ownerAddr (address): 0x926D01e50467539071bbe90694cA73f7A7dF355e
Arg [1] : _rewardsPerSecond (uint256): 158428390000000
Arg [2] : _stakingToken (address): 0xB2bFb52cfc40584AC4e9e2B36a5B8d6554A56e0b

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000926d01e50467539071bbe90694ca73f7a7df355e
Arg [1] : 00000000000000000000000000000000000000000000000000009016fbe88580
Arg [2] : 000000000000000000000000b2bfb52cfc40584ac4e9e2b36a5b8d6554a56e0b


Block Transaction Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Transaction Hash Block Value Eth2 PubKey Valid
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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.