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0x780470E5fbf44e5bAf3Af6eCac9E7293AE412691
 

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Send NFT216402212025-01-16 23:05:477 hrs ago1737068747IN
0x780470E5...3AE412691
0 ETH0.000344894.9397188
Claim216402202025-01-16 23:05:357 hrs ago1737068735IN
0x780470E5...3AE412691
0.0055 ETH0.000209845.02877952
Send NFT216364092025-01-16 10:20:2319 hrs ago1737022823IN
0x780470E5...3AE412691
0 ETH0.000290924.16623897
Claim216364082025-01-16 10:20:1119 hrs ago1737022811IN
0x780470E5...3AE412691
0.0055 ETH0.000166793.99718585
Send NFT216300722025-01-15 13:06:4741 hrs ago1736946407IN
0x780470E5...3AE412691
0 ETH0.000381924.57341653
Claim216300712025-01-15 13:06:3541 hrs ago1736946395IN
0x780470E5...3AE412691
0.0055 ETH0.000190764.57164929
Send NFT216225562025-01-14 11:54:232 days ago1736855663IN
0x780470E5...3AE412691
0 ETH0.000355315.08833523
Claim216225552025-01-14 11:54:112 days ago1736855651IN
0x780470E5...3AE412691
0.0055 ETH0.000180994.33756419
Send NFT216221422025-01-14 10:31:352 days ago1736850695IN
0x780470E5...3AE412691
0 ETH0.000363055.19906473
Claim216221412025-01-14 10:31:232 days ago1736850683IN
0x780470E5...3AE412691
0.0055 ETH0.000213365.11321372
Send NFT216210432025-01-14 6:50:592 days ago1736837459IN
0x780470E5...3AE412691
0 ETH0.000258933.70802041
Claim216210422025-01-14 6:50:472 days ago1736837447IN
0x780470E5...3AE412691
0.0055 ETH0.000153163.67057631
Send NFT216139982025-01-13 7:12:593 days ago1736752379IN
0x780470E5...3AE412691
0 ETH0.000234873.36396226
Claim216139972025-01-13 7:12:473 days ago1736752367IN
0x780470E5...3AE412691
0.0055 ETH0.000136963.28221134
Send NFT216107432025-01-12 20:17:114 days ago1736713031IN
0x780470E5...3AE412691
0 ETH0.000204212.92447107
Claim216107422025-01-12 20:16:594 days ago1736713019IN
0x780470E5...3AE412691
0.0055 ETH0.000110652.65180021
Send NFT216102962025-01-12 18:47:114 days ago1736707631IN
0x780470E5...3AE412691
0 ETH0.000261093.73903686
Claim216102952025-01-12 18:46:594 days ago1736707619IN
0x780470E5...3AE412691
0.0055 ETH0.000155373.72340541
Send NFT216102932025-01-12 18:46:354 days ago1736707595IN
0x780470E5...3AE412691
0 ETH0.000263883.77899483
Claim216102922025-01-12 18:46:234 days ago1736707583IN
0x780470E5...3AE412691
0.0055 ETH0.000145753.49302838
Send NFT216102732025-01-12 18:42:234 days ago1736707343IN
0x780470E5...3AE412691
0 ETH0.00025263.61748848
Claim216102722025-01-12 18:42:114 days ago1736707331IN
0x780470E5...3AE412691
0.0055 ETH0.000144613.46564633
Send NFT216091872025-01-12 15:04:114 days ago1736694251IN
0x780470E5...3AE412691
0 ETH0.000316124.5270192
Claim216091862025-01-12 15:03:594 days ago1736694239IN
0x780470E5...3AE412691
0.0055 ETH0.000148633.56210918
Add Multiple216079352025-01-12 10:52:594 days ago1736679179IN
0x780470E5...3AE412691
0 ETH0.008317722.59738366
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216402202025-01-16 23:05:357 hrs ago1737068735
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0.0055 ETH
216364082025-01-16 10:20:1119 hrs ago1737022811
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0.0055 ETH
216300712025-01-15 13:06:3541 hrs ago1736946395
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0.0055 ETH
216225552025-01-14 11:54:112 days ago1736855651
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216221412025-01-14 10:31:232 days ago1736850683
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216210422025-01-14 6:50:472 days ago1736837447
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216139972025-01-13 7:12:473 days ago1736752367
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216107422025-01-12 20:16:594 days ago1736713019
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216102952025-01-12 18:46:594 days ago1736707619
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0.0055 ETH
216102922025-01-12 18:46:234 days ago1736707583
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216102722025-01-12 18:42:114 days ago1736707331
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216091862025-01-12 15:03:594 days ago1736694239
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216045212025-01-11 23:28:115 days ago1736638091
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216015662025-01-11 13:33:355 days ago1736602415
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216015632025-01-11 13:32:595 days ago1736602379
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215992752025-01-11 5:52:476 days ago1736574767
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215977242025-01-11 0:40:596 days ago1736556059
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215971592025-01-10 22:47:236 days ago1736549243
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215967752025-01-10 21:30:116 days ago1736544611
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215922782025-01-10 6:26:236 days ago1736490383
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215875982025-01-09 14:44:477 days ago1736433887
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215853682025-01-09 7:15:357 days ago1736406935
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215851932025-01-09 6:39:477 days ago1736404787
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215834032025-01-09 0:40:118 days ago1736383211
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215833882025-01-09 0:37:118 days ago1736383031
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Contract Source Code Verified (Exact Match)

Contract Name:
StakeAwayNFT2

Compiler Version
v0.8.19+commit.7dd6d404

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 8 : StakeAwayNFT2.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/utils/Counters.sol";


contract StakeAwayNFT2 is Ownable, Pausable, ReentrancyGuard
{
	using Counters for Counters.Counter;
	Counters.Counter private nftIdCounter;

	address payable private managerAddress;
	uint256 private fixedFeeAmount;

	struct NFT
	{
		address stakingAddress;
		address payable sender;
		address contractAddress;
		uint256 tokenId;
	}

	// Mapping of nfts currently held in the contract.
	mapping(uint256 => NFT) private nfts;

	// Allow fee amount to be overridden on a contract-by-contract basis.
	mapping(address => uint256) private stakingFees;

	event Added(uint256 indexed nftId, address indexed contractAddress, uint256 indexed tokenId, address sender, address stakingAddress);
	event Removed(uint256 indexed nftId, address indexed contractAddress, uint256 indexed tokenId);
	event Claimed(address indexed stakingAddress, address indexed claimerAddress, uint256 indexed feeAmount);
	event PaymentSent(address indexed senderAddress, address indexed receiverAddress, uint256 amount);

	constructor(address payable managerAddress_, uint256 fixedFeeAmount_)
	{
		managerAddress = managerAddress_;
		fixedFeeAmount = fixedFeeAmount_;
	}

	function setManagerAddress(address payable managerAddress_) external onlyOwner
	{
		require(managerAddress_ != address(0), "Address missing");

		managerAddress = managerAddress_;
	}

	function getManagerAddress() external view returns (address)
	{
		return managerAddress;
	}

	// fixedFeeAmount is in Wei
	function setFixedFeeAmount(uint256 fixedFeeAmount_) external onlyOwner
	{
		fixedFeeAmount = fixedFeeAmount_;
	}

	function getFixedFeeAmount() external view returns (uint256)
	{
		return fixedFeeAmount;
	}

	// Amounts are in Wei.

	function setStakingFeeAmount(address stakingAddress_, uint256 feeAmount_) external onlyOwner
	{
		require(stakingAddress_ != address(0), "Invalid address");
		require(feeAmount_ > 0, "Invalid fee amount");

		stakingFees[stakingAddress_] = feeAmount_;
	}

	function clearStakingFeeAmount(address stakingAddress_) external onlyOwner
	{
		uint256 feeAmount = stakingFees[stakingAddress_];
		require(feeAmount > 0, "Invalid address");

		delete stakingFees[stakingAddress_];
	}

	function getStakingFeeAmount(address stakingAddress_) external view returns (uint256)
	{
		return stakingFees[stakingAddress_];
	}

	function sendPayment(address payable receiverAddress) external payable nonReentrant onlyOwner
	{
		require(receiverAddress != address(0), "Address missing");
		require(msg.value > 0, "Invalid amount");

		(bool successFee,) = receiverAddress.call{value: msg.value}("");
		require(successFee, "Payment failed");

		emit PaymentSent(msg.sender, receiverAddress, msg.value);
	}

	function sendNFT(uint256 nftId, address receiverAddress) external nonReentrant onlyOwner
	{
		NFT memory nft = nfts[nftId];

		require(nft.sender != address(0), "Invalid NFT");
		require(receiverAddress != address(0), "Address missing");

		delete nfts[nftId];

		IERC721(nft.contractAddress).transferFrom(address(this), receiverAddress, nft.tokenId);

		emit Removed(nftId, nft.contractAddress, nft.tokenId);
	}

	// Return details about an NFT in the smart contract.
	function getNft(uint256 nftId) external view returns (NFT memory)
	{
		require(nfts[nftId].sender != address(0), "Invalid NFT");

		return nfts[nftId];
	}

	// Add an NFT to the smart contract.
	function add(address stakingAddress, address contractAddress, uint256 tokenId) external nonReentrant whenNotPaused
	{
		nftIdCounter.increment();
		uint256 nftId = nftIdCounter.current();

		NFT memory nft = NFT(stakingAddress, payable(msg.sender), contractAddress, tokenId);
		nfts[nftId] = nft;

		IERC721(contractAddress).transferFrom(msg.sender, address(this), tokenId);

		emit Added(nftId, contractAddress, tokenId, msg.sender, stakingAddress);
	}

	// Add mutiple NFTs from the same collection to the smart contract.
	function addMultiple(address stakingAddress, address contractAddress, uint256[] memory tokenIds) external nonReentrant whenNotPaused
	{
		uint256 no = tokenIds.length;

		require(no > 0 && no <= 50, "Invalid number");

		for (uint256 i = 0; i < no; i++) {

			nftIdCounter.increment();
			uint256 nftId = nftIdCounter.current();

			NFT memory nft = NFT(stakingAddress, payable(msg.sender), contractAddress, tokenIds[i]);
			nfts[nftId] = nft;

			IERC721(contractAddress).transferFrom(msg.sender, address(this), tokenIds[i]);

			emit Added(nftId, contractAddress, tokenIds[i], msg.sender, stakingAddress);
		}
	}

	// Remove an NFT from the smart contract.
	function remove(uint256 nftId) external nonReentrant whenNotPaused
	{
		NFT memory nft = nfts[nftId];
		require(nft.sender == msg.sender, "Invalid NFT");

		delete nfts[nftId];

		IERC721(nft.contractAddress).transferFrom(address(this), nft.sender, nft.tokenId);

		emit Removed(nftId, nft.contractAddress, nft.tokenId);
	}

	// Remove multiple NFTs from the smart contract.
	function removeMultiple(uint256[] memory nftIds) external nonReentrant whenNotPaused
	{
		uint256 no = nftIds.length;

		require(no > 0 && no <= 50, "Invalid number");

		for (uint256 i = 0; i < no; i++) {

			NFT memory nft = nfts[nftIds[i]];
			require(nft.sender == msg.sender, "Invalid NFT");

			delete nfts[nftIds[i]];

			IERC721(nft.contractAddress).transferFrom(address(this), nft.sender, nft.tokenId);

			emit Removed(nftIds[i], nft.contractAddress, nft.tokenId);
		}
	}

	function claim(address stakingAddress) external payable whenNotPaused
	{
		uint256 feeAmount = stakingFees[stakingAddress];
		if (feeAmount == 0) {
			feeAmount = fixedFeeAmount;
		}
		require(msg.value == feeAmount, "Incorrect fee amount");

		(bool successFee,) = managerAddress.call{value: feeAmount}("");
		require(successFee, "Fee payment failed");

		emit Claimed(stakingAddress, msg.sender, feeAmount);
	}

}

File 2 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../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.
 *
 * By default, the owner account will be the one that deploys the contract. 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;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @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 {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

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

File 3 of 8 : Pausable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

File 4 of 8 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

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

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // 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;
    }
}

File 5 of 8 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

File 6 of 8 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

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

File 7 of 8 : Counters.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

File 8 of 8 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * 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[EIP 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
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address payable","name":"managerAddress_","type":"address"},{"internalType":"uint256","name":"fixedFeeAmount_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"nftId","type":"uint256"},{"indexed":true,"internalType":"address","name":"contractAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"stakingAddress","type":"address"}],"name":"Added","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"stakingAddress","type":"address"},{"indexed":true,"internalType":"address","name":"claimerAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"feeAmount","type":"uint256"}],"name":"Claimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"senderAddress","type":"address"},{"indexed":true,"internalType":"address","name":"receiverAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PaymentSent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"nftId","type":"uint256"},{"indexed":true,"internalType":"address","name":"contractAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Removed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"internalType":"address","name":"stakingAddress","type":"address"},{"internalType":"address","name":"contractAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"stakingAddress","type":"address"},{"internalType":"address","name":"contractAddress","type":"address"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"addMultiple","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"stakingAddress","type":"address"}],"name":"claim","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"stakingAddress_","type":"address"}],"name":"clearStakingFeeAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getFixedFeeAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getManagerAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftId","type":"uint256"}],"name":"getNft","outputs":[{"components":[{"internalType":"address","name":"stakingAddress","type":"address"},{"internalType":"address payable","name":"sender","type":"address"},{"internalType":"address","name":"contractAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"internalType":"struct StakeAwayNFT2.NFT","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"stakingAddress_","type":"address"}],"name":"getStakingFeeAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftId","type":"uint256"}],"name":"remove","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"nftIds","type":"uint256[]"}],"name":"removeMultiple","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftId","type":"uint256"},{"internalType":"address","name":"receiverAddress","type":"address"}],"name":"sendNFT","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"receiverAddress","type":"address"}],"name":"sendPayment","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fixedFeeAmount_","type":"uint256"}],"name":"setFixedFeeAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"managerAddress_","type":"address"}],"name":"setManagerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"stakingAddress_","type":"address"},{"internalType":"uint256","name":"feeAmount_","type":"uint256"}],"name":"setStakingFeeAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000004c5b4b9201f2a8593408ada4cf0eb0bdd4830e71000000000000000000000000000000000000000000000000000c6f3b40b6c000

-----Decoded View---------------
Arg [0] : managerAddress_ (address): 0x4c5B4b9201f2A8593408aDA4cF0EB0bdd4830e71
Arg [1] : fixedFeeAmount_ (uint256): 3500000000000000

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000004c5b4b9201f2a8593408ada4cf0eb0bdd4830e71
Arg [1] : 000000000000000000000000000000000000000000000000000c6f3b40b6c000


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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.