APE Price: $0.19 (-1.64%)

Contract

0x3Dbfa6cAe617899Ef7D1110D3aD0e88955d0b035

Overview

APE Balance

Apechain LogoApechain LogoApechain Logo0 APE

APE Value

$0.00

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Private Name Tags

Multichain Info

N/A
Transaction Hash
Block
From
To
Exit325803182026-01-19 20:45:074 days ago1768855507IN
0x3Dbfa6cA...955d0b035
0 APE0.01491747101.68276
Wrap And Stake324510092026-01-16 14:04:548 days ago1768572294IN
0x3Dbfa6cA...955d0b035
4,500 APE0.01433594101.68276
Exit322551022026-01-11 5:53:1513 days ago1768110795IN
0x3Dbfa6cA...955d0b035
0 APE0.01630849101.68276
Wrap And Stake318971372026-01-02 6:31:5722 days ago1767335517IN
0x3Dbfa6cA...955d0b035
12,500 APE0.01433594101.68276
Exit318968332026-01-02 6:22:4322 days ago1767334963IN
0x3Dbfa6cA...955d0b035
0 APE0.01491747101.68276
Wrap And Stake318636622026-01-01 9:59:4523 days ago1767261585IN
0x3Dbfa6cA...955d0b035
7,490 APE0.01433594101.68276
Exit318232762025-12-31 10:06:2724 days ago1767175587IN
0x3Dbfa6cA...955d0b035
0 APE0.01630849101.68276
Wrap And Stake309912682025-12-15 10:59:1240 days ago1765796352IN
0x3Dbfa6cA...955d0b035
10,600 APE0.01433594101.68276
Exit309912362025-12-15 10:58:2140 days ago1765796301IN
0x3Dbfa6cA...955d0b035
0 APE0.01491747101.68276
Wrap And Stake309733502025-12-15 2:15:5840 days ago1765764958IN
0x3Dbfa6cA...955d0b035
8,270 APE0.01433594101.68276
Exit300800622025-12-04 14:16:0251 days ago1764857762IN
0x3Dbfa6cA...955d0b035
0 APE0.0040773725.42069
Wrap And Stake290175962025-11-25 6:28:3360 days ago1764052113IN
0x3Dbfa6cA...955d0b035
10,180 APE0.0035842625.42069
Exit290173102025-11-25 6:25:0860 days ago1764051908IN
0x3Dbfa6cA...955d0b035
0 APE0.0037296225.42069
Wrap And Stake263346322025-11-06 9:25:5379 days ago1762421153IN
0x3Dbfa6cA...955d0b035
9,936 APE0.0035842625.42069
Exit263343422025-11-06 9:22:4579 days ago1762420965IN
0x3Dbfa6cA...955d0b035
0 APE0.0040773725.42069
Wrap And Stake262418462025-11-05 7:28:1280 days ago1762327692IN
0x3Dbfa6cA...955d0b035
7,890 APE0.0035842625.42069
Exit262375332025-11-05 4:12:3580 days ago1762315955IN
0x3Dbfa6cA...955d0b035
0 APE0.0040773725.42069
Wrap And Stake257398162025-10-30 3:03:1686 days ago1761793396IN
0x3Dbfa6cA...955d0b035
9,858 APE0.0035842625.42069
Exit257397762025-10-30 3:01:5386 days ago1761793313IN
0x3Dbfa6cA...955d0b035
0 APE0.0037296225.42069
Exit257396452025-10-30 2:57:0886 days ago1761793028IN
0x3Dbfa6cA...955d0b035
0 APE0.0037296225.42069
Wrap And Stake255194452025-10-26 6:06:1890 days ago1761458778IN
0x3Dbfa6cA...955d0b035
242 APE0.0035842625.42069
Wrap And Stake254494862025-10-24 16:34:1392 days ago1761323653IN
0x3Dbfa6cA...955d0b035
1,410.438 APE0.0035842625.42069
Exit254429932025-10-24 12:05:1692 days ago1761307516IN
0x3Dbfa6cA...955d0b035
0 APE0.0037296225.42069
Wrap And Stake251007952025-10-16 20:27:3399 days ago1760646453IN
0x3Dbfa6cA...955d0b035
2,900 APE0.0035842625.42069
Exit251003982025-10-16 20:11:3799 days ago1760645497IN
0x3Dbfa6cA...955d0b035
0 APE0.0037296225.42069
View all transactions

Latest 25 internal transactions (View All)

Advanced mode:
Parent Transaction Hash Block From To
325803182026-01-19 20:45:074 days ago1768855507
0x3Dbfa6cA...955d0b035
4,499.99999999 APE
325803182026-01-19 20:45:074 days ago1768855507
0x3Dbfa6cA...955d0b035
4,499.99999999 APE
324510092026-01-16 14:04:548 days ago1768572294
0x3Dbfa6cA...955d0b035
4,500 APE
322551022026-01-11 5:53:1513 days ago1768110795
0x3Dbfa6cA...955d0b035
12,499.99999999 APE
322551022026-01-11 5:53:1513 days ago1768110795
0x3Dbfa6cA...955d0b035
12,499.99999999 APE
321061702026-01-07 6:05:2917 days ago1767765929
0x3Dbfa6cA...955d0b035
1,324,750.93 APE
321061702026-01-07 6:05:2917 days ago1767765929
0x3Dbfa6cA...955d0b035
1,324,750.93 APE
318971372026-01-02 6:31:5722 days ago1767335517
0x3Dbfa6cA...955d0b035
12,500 APE
318968332026-01-02 6:22:4322 days ago1767334963
0x3Dbfa6cA...955d0b035
7,489.99999999 APE
318968332026-01-02 6:22:4322 days ago1767334963
0x3Dbfa6cA...955d0b035
7,489.99999999 APE
318636622026-01-01 9:59:4523 days ago1767261585
0x3Dbfa6cA...955d0b035
7,490 APE
318232762025-12-31 10:06:2724 days ago1767175587
0x3Dbfa6cA...955d0b035
8,269.99999999 APE
318232762025-12-31 10:06:2724 days ago1767175587
0x3Dbfa6cA...955d0b035
8,269.99999999 APE
309912682025-12-15 10:59:1240 days ago1765796352
0x3Dbfa6cA...955d0b035
10,600 APE
309912362025-12-15 10:58:2140 days ago1765796301
0x3Dbfa6cA...955d0b035
3,035.07025054 APE
309912362025-12-15 10:58:2140 days ago1765796301
0x3Dbfa6cA...955d0b035
3,035.07025054 APE
309733502025-12-15 2:15:5840 days ago1765764958
0x3Dbfa6cA...955d0b035
8,270 APE
300800622025-12-04 14:16:0251 days ago1764857762
0x3Dbfa6cA...955d0b035
10,192.68797634 APE
300800622025-12-04 14:16:0251 days ago1764857762
0x3Dbfa6cA...955d0b035
10,192.68797634 APE
290175962025-11-25 6:28:3360 days ago1764052113
0x3Dbfa6cA...955d0b035
10,180 APE
290173102025-11-25 6:25:0860 days ago1764051908
0x3Dbfa6cA...955d0b035
9,961.0828052 APE
290173102025-11-25 6:25:0860 days ago1764051908
0x3Dbfa6cA...955d0b035
9,961.0828052 APE
263346322025-11-06 9:25:5379 days ago1762421153
0x3Dbfa6cA...955d0b035
9,936 APE
263343422025-11-06 9:22:4579 days ago1762420965
0x3Dbfa6cA...955d0b035
7,891.13787167 APE
263343422025-11-06 9:22:4579 days ago1762420965
0x3Dbfa6cA...955d0b035
7,891.13787167 APE
View All Internal Transactions

Cross-Chain Transactions
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Contract Source Code Verified (Exact Match)

Contract Name:
StakingRewardHelper

Compiler Version
v0.8.24+commit.e11b9ed9

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import "openzeppelin-contracts/contracts/access/Ownable.sol";
import "openzeppelin-contracts/contracts/utils/ReentrancyGuard.sol";
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
import "openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import "./interfaces/INrApe.sol";
import "./interfaces/IStakingReward.sol";

contract StakingRewardHelper is Ownable, ReentrancyGuard {
    using SafeERC20 for IERC20;

    /// @notice The nrApe address
    address public immutable nrApe;

    /// @notice The staking reward address
    address public immutable stakingReward;

    event Recovered(address token, uint256 amount);

    constructor(address _nrApe, address _stakingReward, address _admin) Ownable(_admin) {
        nrApe = _nrApe;
        stakingReward = _stakingReward;
    }

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

    /**
     * @notice Wraps APE and stakes it in the staking reward contract.
     * @return The amount of shares minted
     */
    function wrapAndStake() external payable nonReentrant returns (uint256) {
        // Wrap the APE to nrApe.
        uint256 shares = INrApe(nrApe).wrap{value: msg.value}();

        // Approve the staking reward contract to spend the nrApe.
        IERC20(nrApe).safeIncreaseAllowance(stakingReward, shares);

        // Stake the nrApe in the staking reward contract.
        IStakingReward(stakingReward).stake(msg.sender, shares);

        return shares;
    }

    /**
     * @notice Withdraws nrApe from the staking reward contract and unwraps it to APE.
     * @param shares The amount of shares to withdraw
     * @return The amount of APE sent
     */
    function withdrawAndUnwrap(uint256 shares) external nonReentrant returns (uint256) {
        return _withdrawAndUnwrap(shares);
    }

    /**
     * @notice Withdraws all nrApe from the staking reward contract, unwraps it to APE, and claims rewards.
     * @return The amount of APE sent
     */
    function exit() external nonReentrant returns (uint256) {
        uint256 shares = IStakingReward(stakingReward).balanceOf(msg.sender);

        uint256 amount = _withdrawAndUnwrap(shares);

        // Claim rewards.
        IStakingReward(stakingReward).getReward(msg.sender);

        return amount;
    }

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

    /**
     * @notice Seize the accidentally deposited tokens.
     * @param tokenAddress The token address
     * @param tokenAmount The token amount
     */
    function recoverToken(address tokenAddress, uint256 tokenAmount) external onlyOwner {
        IERC20(tokenAddress).safeTransfer(owner(), tokenAmount);
        emit Recovered(tokenAddress, tokenAmount);
    }

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

    /**
     * @dev Withdraws nrApe from the staking reward contract and unwraps it to APE.
     * @param shares The amount of shares to withdraw
     * @return The amount of APE sent
     */
    function _withdrawAndUnwrap(uint256 shares) private returns (uint256) {
        // Withdraw the nrApe from the staking reward contract.
        IStakingReward(stakingReward).withdraw(msg.sender, shares);

        // Unwrap the APE from nrApe.
        uint256 amount = INrApe(nrApe).unwrap(shares);

        // Send the APE to the user.
        (bool success,) = msg.sender.call{value: amount}("");
        require(success, "failed to send ape");

        return amount;
    }

    receive() external payable {}
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @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 EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

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

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // 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 {
        // 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) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 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 Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    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 Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            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 silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface INrApe {
    function wrap() external payable returns (uint256);

    function unwrap(uint256 shares) external returns (uint256);

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IStakingReward {
    function totalSupply() external view returns (uint256);

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

    function lastTimeRewardApplicable() external view returns (uint256);

    function rewardPerToken() external view returns (uint256);

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

    function getRewardForDuration() external view returns (uint256);

    function getStakingToken() external view returns (address);

    function stake(address account, uint256 amount) external;

    function withdraw(address account, uint256 amount) external;

    function getReward(address account) external;
}

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

pragma solidity ^0.8.20;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

File 10 of 12 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

File 11 of 12 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

Settings
{
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    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts-upgradeable/lib/halmos-cheatcodes/src/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
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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)

000000000000000000000000cb193de9c28d275bbdb9603ca2421e6f12bfc8840000000000000000000000008bc97fff6eac06ce1d7135dd9aff493d1e73467f00000000000000000000000003ad7ede9c5fc581b0b03e0ca1ac0ebfd29b1e65

-----Decoded View---------------
Arg [0] : _nrApe (address): 0xCB193dE9C28d275bBdb9603ca2421e6F12Bfc884
Arg [1] : _stakingReward (address): 0x8bC97fff6Eac06CE1d7135Dd9aff493d1e73467f
Arg [2] : _admin (address): 0x03ad7edE9C5FC581b0B03e0CA1Ac0eBfd29b1E65

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000cb193de9c28d275bbdb9603ca2421e6f12bfc884
Arg [1] : 0000000000000000000000008bc97fff6eac06ce1d7135dd9aff493d1e73467f
Arg [2] : 00000000000000000000000003ad7ede9c5fc581b0b03e0ca1ac0ebfd29b1e65


Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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0x3Dbfa6cAe617899Ef7D1110D3aD0e88955d0b035
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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.