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Set Approval For...207342972025-12-02 3:58:2754 days ago1764647907IN
0x267B83BC...C9396DcE7
0 HYPE0.000005180.11129263
Set Approval For...207313022025-12-02 3:09:2154 days ago1764644961IN
0x267B83BC...C9396DcE7
0 HYPE0.000046581
Set Approval For...148953692025-09-26 16:25:05120 days ago1758903905IN
0x267B83BC...C9396DcE7
0 HYPE0.000209178.47677392
Set Approval For...144561302025-09-21 16:24:26125 days ago1758471866IN
0x267B83BC...C9396DcE7
0 HYPE0.0007414715.9156765
Safe Transfer Fr...119986752025-08-24 16:53:20153 days ago1756054400IN
0x267B83BC...C9396DcE7
0 HYPE0.00010533.19
Safe Transfer Fr...110794952025-08-14 5:31:13164 days ago1755149473IN
0x267B83BC...C9396DcE7
0 HYPE0.000006340.19209625
Safe Transfer Fr...110794952025-08-14 5:31:13164 days ago1755149473IN
0x267B83BC...C9396DcE7
0 HYPE0.000006340.19209625
Safe Transfer Fr...110794372025-08-14 5:30:16164 days ago1755149416IN
0x267B83BC...C9396DcE7
0 HYPE0.000006680.2025244
Safe Transfer Fr...100380722025-08-02 8:53:00175 days ago1754124780IN
0x267B83BC...C9396DcE7
0 HYPE0.000006930.21
Approve98033172025-07-30 16:44:34178 days ago1753893874IN
0x267B83BC...C9396DcE7
0 HYPE0.000023050.47
Safe Transfer Fr...96992882025-07-29 12:19:10179 days ago1753791550IN
0x267B83BC...C9396DcE7
0 HYPE0.000003840.11645996
Safe Transfer Fr...96992712025-07-29 12:18:54179 days ago1753791534IN
0x267B83BC...C9396DcE7
0 HYPE0.00000330.1
Approve95506962025-07-27 19:43:13181 days ago1753645393IN
0x267B83BC...C9396DcE7
0 HYPE0.0010107220.60105646
Safe Transfer Fr...94056902025-07-26 3:23:12183 days ago1753500192IN
0x267B83BC...C9396DcE7
0 HYPE0.009746100
Safe Transfer Fr...83562302025-07-14 4:14:07195 days ago1752466447IN
0x267B83BC...C9396DcE7
0 HYPE0.000004280.13
Safe Transfer Fr...83561172025-07-14 4:12:16195 days ago1752466336IN
0x267B83BC...C9396DcE7
0 HYPE0.000004610.14
Safe Transfer Fr...82479922025-07-12 22:39:44196 days ago1752359984IN
0x267B83BC...C9396DcE7
0 HYPE0.000008710.1
Approve77835482025-07-07 15:38:38201 days ago1751902718IN
0x267B83BC...C9396DcE7
0 HYPE0.000007350.15
Safe Transfer Fr...77090512025-07-06 19:17:22202 days ago1751829442IN
0x267B83BC...C9396DcE7
0 HYPE0.000011330.13
Safe Transfer Fr...77090212025-07-06 19:16:53202 days ago1751829413IN
0x267B83BC...C9396DcE7
0 HYPE0.000011330.13
Safe Transfer Fr...67596262025-06-25 23:40:35213 days ago1750894835IN
0x267B83BC...C9396DcE7
0 HYPE0.000003290.1
Safe Transfer Fr...67588172025-06-25 23:27:19213 days ago1750894039IN
0x267B83BC...C9396DcE7
0 HYPE0.000003290.1
Add Locker61751452025-06-19 7:55:00219 days ago1750319700IN
0x267B83BC...C9396DcE7
0 HYPE0.000005160.11136188
Add Locker61750842025-06-19 7:54:00219 days ago1750319640IN
0x267B83BC...C9396DcE7
0 HYPE0.000004640.1

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Contract Source Code Verified (Exact Match)

Contract Name:
LockerPass

Compiler Version
v0.8.28+commit.7893614a

Optimization Enabled:
No with 200 runs

Other Settings:
paris EvmVersion
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import '@openzeppelin/contracts/utils/introspection/IERC165.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol';

/**
 * @title LockerPass
 * @dev Contract representing an NFT token compatible with ERC721 and ERC721Enumerable standards.
 * Enables creating, burning, and managing NFT tokens with enumeration functionality.
 */
contract LockerPass is IERC721Enumerable {
  // Address of the administrator
  address public admin;
  // ID for the next NFT to be minted
  uint256 public nextId = 0;

  // Name of the NFT collection
  string public name;
  // Symbol of the NFT collection
  string public symbol;

  // Mapping of authorized lockers with minting and burning privileges
  mapping(address => bool) public authorizedLockers;
  // Mapping of token IDs to their owners
  mapping(uint256 => address) private _owners;
  // Number of tokens owned by each address
  mapping(address => uint256) private _balances;
  // Approved addresses for specific tokens
  mapping(uint256 => address) private _tokenApprovals;
  // Approved operators for specific owners
  mapping(address => mapping(address => bool)) private _operatorApprovals;

  // Variables for IERC721Enumerable implementation
  // Mapping of owners to their tokens by index
  mapping(address owner => mapping(uint256 index => uint256)) private _ownedTokens;
  // Mapping of token IDs to their indices in the owner's token array
  mapping(uint256 tokenId => uint256) private _ownedTokensIndex;
  // Array of all tokens
  uint256[] private _allTokens;
  // Mapping of token IDs to their indices in the all tokens array
  mapping(uint256 tokenId => uint256) private _allTokensIndex;

  // Custom contract errors
  error ERC721NonexistentToken(uint256 tokenId);
  error ERC721InvalidReceiver(address receiver);
  error ERC721InvalidAddress(address target);
  error ERC721OutOfBoundsIndex(address owner, uint256 index);
  error ERC721InvalidOperator(address operator);

  /**
   * @dev Modifier checking if the token exists
   */
  modifier requireMinted(uint256 _tokenId) {
    if (_ownerOf(_tokenId) == address(0)) {
      revert ERC721NonexistentToken(_tokenId);
    }
    _;
  }

  /**
   * @dev Modifier restricting access to administrator only
   */
  modifier onlyAdmin() {
    require(msg.sender == admin, 'Access denied!');
    _;
  }

  /**
   * @dev Modifier restricting access to locker only
   */
  modifier onlyLocker() {
    require(authorizedLockers[msg.sender], 'Access denied!');
    _;
  }

  /**
   * @dev Modifier restricting access to token owner only
   */
  modifier onlyOwner(uint256 _tokenId) {
    require(_ownerOf(_tokenId) == msg.sender, 'Access denied!');
    _;
  }

  /**
   * @dev Constructor initializing the contract
   * @param _admin Address of the contract administrator
   * @param _name Name of the NFT collection
   * @param _symbol Symbol of the NFT collection
   */
  constructor(address _admin, string memory _name, string memory _symbol) {
    admin = _admin;
    name = _name;
    symbol = _symbol;
  }

  /**
   * @dev Add locker to the contract
   * @param _locker Address of the locker to add
   */
  function addLocker(address _locker) external onlyAdmin {
    authorizedLockers[_locker] = true;
  }

  /**
   * @dev Remove locker from the contract
   * @param _locker Address of the locker to remove
   */
  function removeLocker(address _locker) external onlyAdmin {
    authorizedLockers[_locker] = false;
  }

  /**
   * @dev Transfer ownership of the contract
   * @param _newAdmin Address of the new admin
   */
  function transferOwnership(address _newAdmin) external onlyAdmin {
    require(_newAdmin != address(0), "New admin cannot be zero address");
    admin = _newAdmin;
  }

  /**
   * @dev Checks if the contract supports a given interface
   * @param interfaceId ID of the interface to check
   * @return bool Whether the interface is supported
   */
  function supportsInterface(bytes4 interfaceId) public pure returns (bool) {
    return
      interfaceId == type(IERC721).interfaceId ||
      interfaceId == type(IERC165).interfaceId ||
      interfaceId == type(IERC721Enumerable).interfaceId;
  }

  /**
   * @dev Returns the number of tokens owned by an address
   * @param _owner Address of the owner
   * @return uint256 Number of tokens
   */
  function balanceOf(address _owner) public view returns (uint256) {
    if (_owner == address(0)) {
      revert ERC721InvalidAddress(_owner);
    }

    return _balances[_owner];
  }

  /**
   * @dev Returns the total amount of tokens stored by the contract.
   */
  function totalSupply() public view returns (uint256) {
    return _allTokens.length;
  }

  /**
   * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
   * Use along with {totalSupply} to enumerate all tokens.
   */
  function tokenByIndex(uint256 index) external view returns (uint256) {
    if (index >= totalSupply()) {
      revert ERC721OutOfBoundsIndex(address(0), index);
    }
    return _allTokens[index];
  }

  /**
   * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
   * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
   */
  function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256) {
    if (index >= balanceOf(owner)) {
      revert ERC721OutOfBoundsIndex(owner, index);
    }
    return _ownedTokens[owner][index];
  }

  /**
   * @dev Returns the address of the owner of the token with the given ID
   * @param _tokenId Token ID
   * @return address Owner address
   */
  function ownerOf(uint256 _tokenId) external view requireMinted(_tokenId) returns (address) {
    return _ownerOf(_tokenId);
  }

  /**
   * @dev Internal function returning the token owner
   * @param _tokenId Token ID
   * @return address Owner address
   */
  function _ownerOf(uint256 _tokenId) internal view returns (address) {
    return _owners[_tokenId];
  }

  /**
   * @dev Creates a new NFT token and assigns it to a specific address
   * @param _to Address of the new token recipient
   */
  function mint(address _to) external onlyLocker {
    _owners[nextId] = _to;

    emit Transfer(address(0), _to, nextId);

    unchecked {
      _balances[_to] += 1;
    }

    _addTokenToAllTokensEnumeration(nextId);
    _addTokenToOwnerEnumeration(_to, nextId);

    unchecked {
      nextId = nextId + 1;
    }
  }

  /**
   * @dev Destroys (burns) the specified NFT token
   * @param _tokenId ID of the token to destroy
   */
  function burn(uint256 _tokenId) external requireMinted(_tokenId) onlyLocker {
    address owner = _ownerOf(_tokenId);

    _removeTokenFromOwnerEnumeration(owner, _tokenId);
    _removeTokenFromAllTokensEnumeration(_tokenId);

    unchecked {
      _balances[owner] -= 1;
    }
    _owners[_tokenId] = address(0);
    _tokenApprovals[_tokenId] = address(0);

    emit Transfer(owner, address(0), _tokenId);
  }

  /**
   * @dev Approves another address to manage a specific token
   * @param _to Address to be approved
   * @param _tokenId Token ID
   */
  function approve(
    address _to,
    uint256 _tokenId
  ) external requireMinted(_tokenId) onlyOwner(_tokenId) {
    emit Approval(msg.sender, _to, _tokenId);
    _tokenApprovals[_tokenId] = _to;
  }

  /**
   * @dev Returns the approved address for a specific token
   * @param _tokenId Token ID
   * @return address Approved address
   */
  function getApproved(uint256 _tokenId) external view requireMinted(_tokenId) returns (address) {
    return _tokenApprovals[_tokenId];
  }

  /**
   * @dev Sets or removes approval for an operator to manage all of the owner's tokens
   * @param _operator Operator address
   * @param _approved Whether the operator is approved
   */
  function setApprovalForAll(address _operator, bool _approved) public {
    if (_operator == address(0)) {
      revert ERC721InvalidOperator(_operator);
    }
    emit ApprovalForAll(msg.sender, _operator, _approved);
    _operatorApprovals[msg.sender][_operator] = _approved;
  }

  /**
   * @dev Checks if an address is an approved operator for the owner
   * @param _owner Owner address
   * @param _operator Operator address
   * @return bool Whether the operator is approved
   */
  function isApprovedForAll(address _owner, address _operator) external view returns (bool) {
    return _operatorApprovals[_owner][_operator];
  }

  /**
   * @dev Transfers token ownership from one address to another
   * @param _from Address from which the token is being transferred
   * @param _to Address to which the token is being transferred
   * @param _tokenId ID of the token being transferred
   */
  function transferFrom(address _from, address _to, uint256 _tokenId) public {
    if (_to == address(0)) {
      revert ERC721InvalidAddress(_to);
    }
    _checkAuthorized(msg.sender, _tokenId);

    if (_from != _ownerOf(_tokenId)) {
      revert ERC721NonexistentToken(_tokenId);
    }

    if (_from != _to) {
      if (_from != address(0)) {
        _removeTokenFromOwnerEnumeration(_from, _tokenId);
        unchecked {
          _balances[_from] -= 1;
        }
      }

      if (_to != address(0)) {
        unchecked {
          _balances[_to] += 1;
        }
        _addTokenToOwnerEnumeration(_to, _tokenId);
      }
    }

    _tokenApprovals[_tokenId] = address(0);

    _owners[_tokenId] = _to;

    emit Transfer(_from, _to, _tokenId);
  }

  /**
   * @dev Safely transfers token ownership, checking if the recipient can receive tokens
   * @param _from Address from which the token is being transferred
   * @param _to Address to which the token is being transferred
   * @param _tokenId ID of the token being transferred
   */
  function safeTransferFrom(address _from, address _to, uint256 _tokenId) public {
    transferFrom(_from, _to, _tokenId);
    _checkOnERC721Received(_from, _to, _tokenId, '');
  }

  /**
   * @dev Safely transfers token ownership, checking if the recipient can receive tokens
   * @param _from Address from which the token is being transferred
   * @param _to Address to which the token is being transferred
   * @param _tokenId ID of the token being transferred
   * @param _data Additional data passed to the recipient
   */
  function safeTransferFrom(
    address _from,
    address _to,
    uint256 _tokenId,
    bytes calldata _data
  ) public {
    transferFrom(_from, _to, _tokenId);
    _checkOnERC721Received(_from, _to, _tokenId, _data);
  }

  /**
   * @dev Checks if the operator is authorized to manage the token
   * @param _operator Operator address
   * @param _tokenId Token ID
   */
  function _checkAuthorized(address _operator, uint256 _tokenId) internal view {
    address tokenOwner = _owners[_tokenId];
    bool isOwner = tokenOwner == _operator;
    bool isApproved = _tokenApprovals[_tokenId] == _operator;
    bool approvedForAll = _operatorApprovals[tokenOwner][_operator];
    require(isOwner || isApproved || approvedForAll, 'Access denied');
  }

  /**
   * @dev Checks if the recipient contract address properly handles receiving ERC721 tokens
   * @param _from Sender address
   * @param _to Recipient address
   * @param _tokenId Token ID
   * @param _data Additional data
   */
  function _checkOnERC721Received(
    address _from,
    address _to,
    uint256 _tokenId,
    bytes memory _data
  ) private {
    if (_to.code.length > 0) {
      try IERC721Receiver(_to).onERC721Received(msg.sender, _from, _tokenId, _data) returns (
        bytes4 retval
      ) {
        if (retval != IERC721Receiver.onERC721Received.selector) {
          revert ERC721InvalidReceiver(_to);
        }
      } catch (bytes memory reason) {
        if (reason.length == 0) {
          revert ERC721InvalidReceiver(_to);
        } else {
          /// @solidity memory-safe-assembly
          assembly {
            revert(add(32, reason), mload(reason))
          }
        }
      }
    }
  }

  /**
   * @dev Private function to add a token to this extension's ownership-tracking data structures.
   * @param to address representing the new owner of the given token ID
   * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
   */
  function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
    uint256 length = balanceOf(to) - 1;
    _ownedTokens[to][length] = tokenId;
    _ownedTokensIndex[tokenId] = length;
  }

  /**
   * @dev Private function to add a token to this extension's token tracking structures
   * @param tokenId ID of the token to be added to the tokens list
   */
  function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
    _allTokensIndex[tokenId] = _allTokens.length;
    _allTokens.push(tokenId);
  }

  /**
   * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
   * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
   * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
   * This has O(1) time complexity, but alters the order of the _ownedTokens array.
   * @param from address representing the previous owner of the given token ID
   * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
   */
  function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
    // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
    // then delete the last slot (swap and pop).

    uint256 lastTokenIndex = balanceOf(from) -1;
    uint256 tokenIndex = _ownedTokensIndex[tokenId];

    mapping(uint256 index => uint256) storage _ownedTokensByOwner = _ownedTokens[from];

    // When the token to delete is the last token, the swap operation is unnecessary
    if (tokenIndex != lastTokenIndex) {
      uint256 lastTokenId = _ownedTokensByOwner[lastTokenIndex];

      _ownedTokensByOwner[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
      _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
    }

    // This also deletes the contents at the last position of the array
    delete _ownedTokensIndex[tokenId];
    delete _ownedTokensByOwner[lastTokenIndex];
  }

  /**
   * @dev Private function to remove a token from this extension's token tracking data structures.
   * This has O(1) time complexity, but alters the order of the _allTokens array.
   * @param tokenId uint256 ID of the token to be removed from the tokens list
   */
  function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
    // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
    // then delete the last slot (swap and pop).

    uint256 lastTokenIndex = _allTokens.length - 1;
    uint256 tokenIndex = _allTokensIndex[tokenId];

    // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
    // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
    // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
    uint256 lastTokenId = _allTokens[lastTokenIndex];

    _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
    _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

    // This also deletes the contents at the last position of the array
    delete _allTokensIndex[tokenId];
    _allTokens.pop();
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.20;

/**
 * @title ERC-721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC-721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be
     * reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Required interface of an ERC-721 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 ERC-721 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 ERC-721
     * 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 address zero.
     *
     * 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.20;

import {IERC721} from "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// 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
{
  "evmVersion": "paris",
  "libraries": {},
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"_admin","type":"address"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"ERC721InvalidAddress","type":"error"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"ERC721InvalidOperator","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC721InvalidReceiver","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ERC721NonexistentToken","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"ERC721OutOfBoundsIndex","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"_locker","type":"address"}],"name":"addLocker","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"authorizedLockers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_locker","type":"address"}],"name":"removeLocker","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_operator","type":"address"},{"internalType":"bool","name":"_approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","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":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newAdmin","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)

00000000000000000000000072bbf943e4cd8323b8fb74aec7cbdf454445ebd6000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000a4c6f636b6572506173730000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000024c50000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _admin (address): 0x72bbF943e4cD8323b8fB74aeC7CbDF454445ebD6
Arg [1] : _name (string): LockerPass
Arg [2] : _symbol (string): LP

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 00000000000000000000000072bbf943e4cd8323b8fb74aec7cbdf454445ebd6
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [4] : 4c6f636b65725061737300000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [6] : 4c50000000000000000000000000000000000000000000000000000000000000


Block Transaction 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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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.