Token

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.20;

import {ReentrancyGuardUpgradeable} from "@openzeppelin5/contracts-upgradeable/utils/ReentrancyGuardUpgradeable.sol";
import {SafeERC20, IERC20} from "@openzeppelin5/contracts/token/ERC20/utils/SafeERC20.sol";
import {MerkleProof} from "@openzeppelin5/contracts/utils/cryptography/MerkleProof.sol";
import {IERC20Metadata} from "@openzeppelin5/contracts/token/ERC20/extensions/IERC20Metadata.sol";

import {ITokenStaking} from "./interfaces/ITokenStaking.sol";

contract TokenStaking is
    ReentrancyGuardUpgradeable,
    ITokenStaking
{
    using SafeERC20 for IERC20;

    uint256 private constant _MINIMUM_AMOUNT = 1e18;

    IERC20 public stakeToken;
    bool public stakingActive;
    uint256 public totalStaked;

    mapping(address => uint256) public balanceOf;

    address public owner;

    event StakeTokenSet(address indexed previousToken, address indexed newToken);
    event OwnerSet(address indexed previousOwner, address indexed newOwner);

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor(address _stakeToken) {
        owner = msg.sender;
        stakingActive = true;
        stakeToken = IERC20(_stakeToken);
    }

    function name() external view returns (string memory) {
        return IERC20Metadata(address(stakeToken)).name();
    }

    function symbol() external view returns (string memory) {
        return IERC20Metadata(address(stakeToken)).symbol();
    }

    function decimals() external view returns (uint8) {
        return IERC20Metadata(address(stakeToken)).decimals();
    }

    // ==================
    // External Functions
    // ==================

    /// @inheritdoc ITokenStaking
    function stake(uint256 amount)
        external
        nonReentrant
        onlyValidStakingSetup
    {
        _stake(msg.sender, amount);
    }

    /// @inheritdoc ITokenStaking
    function unstake(uint256 amount)
        external
        nonReentrant
        onlyValidStakingSetup
    {
        _unstake(msg.sender, amount);
    }

    // ============================
    // Internal & Private Functions
    // ============================

    function _stake(address user, uint256 amount) private {
        unchecked {
            balanceOf[user] += amount;
        }
        totalStaked += amount;
        stakeToken.safeTransferFrom(user, address(this), amount);
        emit Transfer(address(0), user, amount);

        emit Staked(user, amount, block.timestamp);
    }

    function _unstake(address user, uint256 amount) private {
        uint256 userBalance = balanceOf[user];
        if (userBalance < amount) revert InsufficientStakedBalance();

        balanceOf[user] = userBalance - amount;
        totalStaked -= amount;
        
        stakeToken.safeTransfer(user, amount);
        emit Transfer(user, address(0), amount);

        emit Unstaked(user, amount, block.timestamp);
    }

    // ====================
    // Validation Modifiers
    // ====================
    modifier onlyOwner() {
        require(msg.sender == owner, "Only the owner can call this function");
        _; // Continue execution of the function if the condition is met
    }

    modifier onlyValidStakingSetup() {
        if (!stakingActive) revert StakingNotAvailable();
        _;
    }

    modifier onlyValidAmount(uint256 amount) {
        if (amount == 0 || amount < _MINIMUM_AMOUNT) revert InvalidAmount();
        _;
    }

    // ==============
    // Admin Functions
    // ==============

    /// @inheritdoc ITokenStaking
    function setStakingActive(bool isActive) external onlyOwner {
        stakingActive = isActive;
        emit StakingStatusUpdated(isActive);
    }
    
    /// set owner
    function setOwner(address _owner) external onlyOwner {
        address previousOwner = owner;
        owner = _owner;
        emit OwnerSet(previousOwner, _owner);
    }

    // ==============
    // Getters
    // ==============

    /**
     * @notice Get the total staked amount
     */
    function totalSupply() external view returns (uint256) {
        return totalStaked;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.20;

import {IERC20TokenTracker} from "./IERC20TokenTracker.sol";

interface ITokenStaking is IERC20TokenTracker {
    struct Reward {
        uint256 rewardId;
        uint256 amount;
        bytes32[] proof;
    }

    error InvalidAddress();
    error InvalidAmount();
    error InvalidProof();
    error InvalidStakingSetup();
    error InsufficientStakedBalance();
    error StakingNotAvailable();
    error Unauthorized();
    error UpgraderRenounced();

    event Staked(address indexed user, uint256 amount, uint256 stakedAt);
    event Unstaked(address indexed user, uint256 amount, uint256 unstakedAt);
    event RewardRedeemed(address user, uint256 rewardId, uint256 amount, uint256 redeemedAt);
    event RewardStaked(uint256 rewardId, uint256 amount, uint256 stakedAt);
    event StakingStatusUpdated(bool isActive);
    event UpgraderUpdated(address _upgrader);

    /**
     * @notice Stake tokens into staking contract
     * @param amount The amount of tokens to stake from user's wallet
     */
    function stake(uint256 amount) external;


    /**
     * @notice Unstake tokens from staking contract
     * @param amount The total amount of tokens to unstake from staked balance and any unredeemed rewards
    */
    function unstake(uint256 amount) external;

    /**
     * @notice Stake rewards with specified address of depositor. Can only be called by the owner.
     * @param depositor The address to stake tokens as rewards
     * @param rewardId The ID of reward
     * @param amount The amount of rewards to stake
     * @param root The Merkle root to verify users' reward
     */
    // function stakeRewards(address depositor, uint256 rewardId, uint256 amount, bytes32 root) external;

    /**
     * @notice Pause/unpause staking. Can only be called by the owner.
     * @param isActive New boolean to indicate active or not
     */
    function setStakingActive(bool isActive) external;

}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.20;

/**
 * @dev These functions deal with verification of Merkle Tree proofs.
 *
 * The tree and the proofs can be generated using our
 * https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
 * You will find a quickstart guide in the readme.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the Merkle tree could be reinterpreted as a leaf value.
 * OpenZeppelin's JavaScript library generates Merkle trees that are safe
 * against this attack out of the box.
 */
library MerkleProof {
    /**
     *@dev The multiproof provided is not valid.
     */
    error MerkleProofInvalidMultiproof();

    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Calldata version of {verify}
     */
    function verifyCalldata(bytes32[] calldata proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Calldata version of {processProof}
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details.
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details.
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
     * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
     * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
     * respectively.
     *
     * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
     * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
     * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the Merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 proofLen = proof.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        if (leavesLen + proofLen != totalHashes + 1) {
            revert MerkleProofInvalidMultiproof();
        }

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i]
                ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
                : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            if (proofPos != proofLen) {
                revert MerkleProofInvalidMultiproof();
            }
            unchecked {
                return hashes[totalHashes - 1];
            }
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}.
     *
     * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details.
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the Merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 proofLen = proof.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        if (leavesLen + proofLen != totalHashes + 1) {
            revert MerkleProofInvalidMultiproof();
        }

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i]
                ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
                : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            if (proofPos != proofLen) {
                revert MerkleProofInvalidMultiproof();
            }
            unchecked {
                return hashes[totalHashes - 1];
            }
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Sorts the pair (a, b) and hashes the result.
     */
    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    /**
     * @dev Implementation of keccak256(abi.encode(a, b)) that doesn't allocate or expand memory.
     */
    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// 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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @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 ReentrancyGuardUpgradeable is Initializable {
    // 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;

    /// @custom:storage-location erc7201:openzeppelin.storage.ReentrancyGuard
    struct ReentrancyGuardStorage {
        uint256 _status;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ReentrancyGuardStorageLocation = 0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

    function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $) {
        assembly {
            $.slot := ReentrancyGuardStorageLocation
        }
    }

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        $._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() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if ($._status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        $._status = ENTERED;
    }

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

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        return $._status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.20;

/**
 * @dev Interface for offchain token trackers (ex. Etherscan) via partial IERC20Metadata
 */
interface IERC20TokenTracker {
    event Transfer(address indexed from, address indexed to, uint256 amount);

    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function balanceOf(address user) external view returns (uint256);
    function totalSupply() external view returns (uint256);
}

// 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();
        }
    }
}

// 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);
}

// 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _getInitializableStorage()._initializing;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_stakeToken","type":"address"}],"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":"InsufficientStakedBalance","type":"error"},{"inputs":[],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[],"name":"InvalidInitialization","type":"error"},{"inputs":[],"name":"InvalidProof","type":"error"},{"inputs":[],"name":"InvalidStakingSetup","type":"error"},{"inputs":[],"name":"NotInitializing","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"StakingNotAvailable","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"inputs":[],"name":"UpgraderRenounced","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"version","type":"uint64"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"rewardId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"redeemedAt","type":"uint256"}],"name":"RewardRedeemed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewardId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"stakedAt","type":"uint256"}],"name":"RewardStaked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousToken","type":"address"},{"indexed":true,"internalType":"address","name":"newToken","type":"address"}],"name":"StakeTokenSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"stakedAt","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isActive","type":"bool"}],"name":"StakingStatusUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"unstakedAt","type":"uint256"}],"name":"Unstaked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_upgrader","type":"address"}],"name":"UpgraderUpdated","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"setOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"isActive","type":"bool"}],"name":"setStakingActive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakeToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalStaked","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0x608060405234801561000f575f80fd5b50600436106100cb575f3560e01c806351ed6a30116100885780638da5cb5b116100635780638da5cb5b146101a657806395d89b41146101b9578063a694fc3a146101c1578063a6ac4b35146101d4575f80fd5b806351ed6a301461015457806370a082311461017e578063817b1cd21461019d575f80fd5b806306fdde03146100cf57806313af4035146100ed57806318160ddd14610102578063281105e3146101145780632e17de7814610127578063313ce5671461013a575b5f80fd5b6100d76101f7565b6040516100e49190610933565b60405180910390f35b6101006100fb366004610968565b610269565b005b6001545b6040519081526020016100e4565b61010061012236600461099b565b6102ed565b6101006101353660046109b6565b61036e565b6101426103d5565b60405160ff90911681526020016100e4565b5f54610166906001600160a01b031681565b6040516001600160a01b0390911681526020016100e4565b61010661018c366004610968565b60026020525f908152604090205481565b61010660015481565b600354610166906001600160a01b031681565b6100d7610449565b6101006101cf3660046109b6565b61048f565b5f546101e790600160a01b900460ff1681565b60405190151581526020016100e4565b5f8054604080516306fdde0360e01b815290516060936001600160a01b03909316926306fdde0392600480820193918290030181865afa15801561023d573d5f803e3d5ffd5b505050506040513d5f823e601f3d908101601f1916820160405261026491908101906109e1565b905090565b6003546001600160a01b0316331461029c5760405162461bcd60e51b815260040161029390610a94565b60405180910390fd5b600380546001600160a01b038381166001600160a01b0319831681179093556040519116919082907f342827c97908e5e2f71151c08502a66d44b6f758e3ac2f1de95f02eb95f0a735905f90a35050565b6003546001600160a01b031633146103175760405162461bcd60e51b815260040161029390610a94565b5f8054821515600160a01b0260ff60a01b199091161790556040517f4f79b573b3d0c2b7908a15cc4a623210a68435e8ba010d62a0d02bf5e99f95529061036390831515815260200190565b60405180910390a150565b6103766104ca565b5f54600160a01b900460ff1661039f576040516316ab26ed60e31b815260040160405180910390fd5b6103a93382610514565b6103d260017f9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f0055565b50565b5f805f9054906101000a90046001600160a01b03166001600160a01b031663313ce5676040518163ffffffff1660e01b8152600401602060405180830381865afa158015610425573d5f803e3d5ffd5b505050506040513d601f19601f820116820180604052508101906102649190610ad9565b5f8054604080516395d89b4160e01b815290516060936001600160a01b03909316926395d89b4192600480820193918290030181865afa15801561023d573d5f803e3d5ffd5b6104976104ca565b5f54600160a01b900460ff166104c0576040516316ab26ed60e31b815260040160405180910390fd5b6103a93382610627565b7f9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f0080546001190161050e57604051633ee5aeb560e01b815260040160405180910390fd5b60029055565b6001600160a01b0382165f908152600260205260409020548181101561054d576040516345a5c39960e11b815260040160405180910390fd5b6105578282610b0d565b6001600160a01b0384165f9081526002602052604081209190915560018054849290610584908490610b0d565b90915550505f5461059f906001600160a01b031684846106f9565b6040518281525f906001600160a01b038516907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef9060200160405180910390a3604080518381524260208201526001600160a01b038516917f7fc4727e062e336010f2c282598ef5f14facb3de68cf8195c2f23e1454b2b74e910160405180910390a2505050565b6001600160a01b0382165f90815260026020526040812080548301905560018054839290610656908490610b20565b90915550505f54610672906001600160a01b031683308461075d565b6040518181526001600160a01b038316905f907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef9060200160405180910390a3604080518281524260208201526001600160a01b038416917f1449c6dd7851abc30abf37f57715f492010519147cc2652fbc38202c18a6ee90910160405180910390a25050565b6040516001600160a01b0383811660248301526044820183905261075891859182169063a9059cbb906064015b604051602081830303815290604052915060e01b6020820180516001600160e01b03838183161783525050505061079c565b505050565b6040516001600160a01b0384811660248301528381166044830152606482018390526107969186918216906323b872dd90608401610726565b50505050565b5f6107b06001600160a01b038416836107fd565b905080515f141580156107d45750808060200190518101906107d29190610b33565b155b1561075857604051635274afe760e01b81526001600160a01b0384166004820152602401610293565b606061080a83835f610813565b90505b92915050565b6060814710156108385760405163cd78605960e01b8152306004820152602401610293565b5f80856001600160a01b031684866040516108539190610b4e565b5f6040518083038185875af1925050503d805f811461088d576040519150601f19603f3d011682016040523d82523d5f602084013e610892565b606091505b50915091506108a28683836108ae565b925050505b9392505050565b6060826108c3576108be8261090a565b6108a7565b81511580156108da57506001600160a01b0384163b155b1561090357604051639996b31560e01b81526001600160a01b0385166004820152602401610293565b50806108a7565b80511561091a5780518082602001fd5b604051630a12f52160e11b815260040160405180910390fd5b602081525f82518060208401528060208501604085015e5f604082850101526040601f19601f83011684010191505092915050565b5f60208284031215610978575f80fd5b81356001600160a01b03811681146108a7575f80fd5b80151581146103d2575f80fd5b5f602082840312156109ab575f80fd5b81356108a78161098e565b5f602082840312156109c6575f80fd5b5035919050565b634e487b7160e01b5f52604160045260245ffd5b5f602082840312156109f1575f80fd5b815167ffffffffffffffff811115610a07575f80fd5b8201601f81018413610a17575f80fd5b805167ffffffffffffffff811115610a3157610a316109cd565b604051601f8201601f19908116603f0116810167ffffffffffffffff81118282101715610a6057610a606109cd565b604052818152828201602001861015610a77575f80fd5b8160208401602083015e5f91810160200191909152949350505050565b60208082526025908201527f4f6e6c7920746865206f776e65722063616e2063616c6c20746869732066756e60408201526431ba34b7b760d91b606082015260800190565b5f60208284031215610ae9575f80fd5b815160ff811681146108a7575f80fd5b634e487b7160e01b5f52601160045260245ffd5b8181038181111561080d5761080d610af9565b8082018082111561080d5761080d610af9565b5f60208284031215610b43575f80fd5b81516108a78161098e565b5f82518060208501845e5f92019182525091905056fea2646970667358221220cbe53cb34e4bf9a2201b74410345746d2962196a4c345c615917320222714bd764736f6c634300081a0033

0000000000000000000000005582a479f0c403e207d2578963ccef5d03ba636f

-----Decoded View---------------
Arg [0] : _stakeToken (address): 0x5582a479f0c403E207D2578963CceF5D03BA636f

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000005582a479f0c403e207d2578963ccef5d03ba636f