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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0xe2CA91a8...33Be65909 The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
Unknown
Compiler Version
v0.8.0+commit.c7dfd78e
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2022-10-16 */ /** *Submitted for verification at Etherscan.io on 2022-10-13 */ // File: https://github.com/0xcert/ethereum-erc721/src/contracts/ownership/ownable.sol pragma solidity ^0.8.0; /** * @dev The contract has an owner address, and provides basic authorization control whitch * simplifies the implementation of user permissions. This contract is based on the source code at: * https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/ownership/Ownable.sol */ contract Ownable { /** * @dev Error constants. */ string public constant NOT_CURRENT_OWNER = "018001"; string public constant CANNOT_TRANSFER_TO_ZERO_ADDRESS = "018002"; /** * @dev Current owner address. */ address public owner; /** * @dev An event which is triggered when the owner is changed. * @param previousOwner The address of the previous owner. * @param newOwner The address of the new owner. */ event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev The constructor sets the original `owner` of the contract to the sender account. */ constructor() { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner, NOT_CURRENT_OWNER); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferOwnership( address _newOwner ) public onlyOwner { require(_newOwner != address(0), CANNOT_TRANSFER_TO_ZERO_ADDRESS); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/tokens/erc721-metadata.sol pragma solidity ^0.8.0; /** * @dev Optional metadata extension for ERC-721 non-fungible token standard. * See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md. */ interface ERC721Metadata { /** * @dev Returns a descriptive name for a collection of NFTs in this contract. * @return _name Representing name. */ function name() external view returns (string memory _name); /** * @dev Returns a abbreviated name for a collection of NFTs in this contract. * @return _symbol Representing symbol. */ function symbol() external view returns (string memory _symbol); /** * @dev Returns a distinct Uniform Resource Identifier (URI) for a given asset. It Throws if * `_tokenId` is not a valid NFT. URIs are defined in RFC3986. The URI may point to a JSON file * that conforms to the "ERC721 Metadata JSON Schema". * @return URI of _tokenId. */ function tokenURI(uint256 _tokenId) external view returns (string memory); } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/utils/address-utils.sol pragma solidity ^0.8.0; /** * @notice Based on: * https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Address.sol * Requires EIP-1052. * @dev Utility library of inline functions on addresses. */ library AddressUtils { /** * @dev Returns whether the target address is a contract. * @param _addr Address to check. * @return addressCheck True if _addr is a contract, false if not. */ function isContract( address _addr ) internal view returns (bool addressCheck) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(_addr) } // solhint-disable-line addressCheck = (codehash != 0x0 && codehash != accountHash); } } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/utils/erc165.sol pragma solidity ^0.8.0; /** * @dev A standard for detecting smart contract interfaces. * See: https://eips.ethereum.org/EIPS/eip-165. */ interface ERC165 { /** * @dev Checks if the smart contract includes a specific interface. * This function uses less than 30,000 gas. * @param _interfaceID The interface identifier, as specified in ERC-165. * @return True if _interfaceID is supported, false otherwise. */ function supportsInterface( bytes4 _interfaceID ) external view returns (bool); } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/utils/supports-interface.sol pragma solidity ^0.8.0; /** * @dev Implementation of standard for detect smart contract interfaces. */ contract SupportsInterface is ERC165 { /** * @dev Mapping of supported intefraces. You must not set element 0xffffffff to true. */ mapping(bytes4 => bool) internal supportedInterfaces; /** * @dev Contract constructor. */ constructor() { supportedInterfaces[0x01ffc9a7] = true; // ERC165 } /** * @dev Function to check which interfaces are suported by this contract. * @param _interfaceID Id of the interface. * @return True if _interfaceID is supported, false otherwise. */ function supportsInterface( bytes4 _interfaceID ) external override view returns (bool) { return supportedInterfaces[_interfaceID]; } } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/tokens/erc721-token-receiver.sol pragma solidity ^0.8.0; /** * @dev ERC-721 interface for accepting safe transfers. * See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md. */ interface ERC721TokenReceiver { /** * @notice The contract address is always the message sender. A wallet/broker/auction application * MUST implement the wallet interface if it will accept safe transfers. * @dev Handle the receipt of a NFT. The ERC721 smart contract calls this function on the * recipient after a `transfer`. This function MAY throw to revert and reject the transfer. Return * of other than the magic value MUST result in the transaction being reverted. * Returns `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` unless throwing. * @param _operator The address which called `safeTransferFrom` function. * @param _from The address which previously owned the token. * @param _tokenId The NFT identifier which is being transferred. * @param _data Additional data with no specified format. * @return Returns `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`. */ function onERC721Received( address _operator, address _from, uint256 _tokenId, bytes calldata _data ) external returns(bytes4); } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/tokens/erc721.sol pragma solidity ^0.8.0; /** * @dev ERC-721 non-fungible token standard. * See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md. */ interface ERC721 { /** * @dev Emits when ownership of any NFT changes by any mechanism. This event emits when NFTs are * created (`from` == 0) and destroyed (`to` == 0). Exception: during contract creation, any * number of NFTs may be created and assigned without emitting Transfer. At the time of any * transfer, the approved address for that NFT (if any) is reset to none. */ event Transfer( address indexed _from, address indexed _to, uint256 indexed _tokenId ); /** * @dev This emits when the approved address for an NFT is changed or reaffirmed. The zero * address indicates there is no approved address. When a Transfer event emits, this also * indicates that the approved address for that NFT (if any) is reset to none. */ event Approval( address indexed _owner, address indexed _approved, uint256 indexed _tokenId ); /** * @dev This emits when an operator is enabled or disabled for an owner. The operator can manage * all NFTs of the owner. */ event ApprovalForAll( address indexed _owner, address indexed _operator, bool _approved ); /** * @notice Throws unless `msg.sender` is the current owner, an authorized operator, or the * approved address for this NFT. Throws if `_from` is not the current owner. Throws if `_to` is * the zero address. Throws if `_tokenId` is not a valid NFT. When transfer is complete, this * function checks if `_to` is a smart contract (code size > 0). If so, it calls * `onERC721Received` on `_to` and throws if the return value is not * `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`. * @dev Transfers the ownership of an NFT from one address to another address. This function can * be changed to payable. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. * @param _data Additional data with no specified format, sent in call to `_to`. */ function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes calldata _data ) external; /** * @notice This works identically to the other function with an extra data parameter, except this * function just sets data to "" * @dev Transfers the ownership of an NFT from one address to another address. This function can * be changed to payable. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. */ function safeTransferFrom( address _from, address _to, uint256 _tokenId ) external; /** * @notice The caller is responsible to confirm that `_to` is capable of receiving NFTs or else * they may be permanently lost. * @dev Throws unless `msg.sender` is the current owner, an authorized operator, or the approved * address for this NFT. Throws if `_from` is not the current owner. Throws if `_to` is the zero * address. Throws if `_tokenId` is not a valid NFT. This function can be changed to payable. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. */ function transferFrom( address _from, address _to, uint256 _tokenId ) external; /** * @notice The zero address indicates there is no approved address. Throws unless `msg.sender` is * the current NFT owner, or an authorized operator of the current owner. * @param _approved The new approved NFT controller. * @dev Set or reaffirm the approved address for an NFT. This function can be changed to payable. * @param _tokenId The NFT to approve. */ function approve( address _approved, uint256 _tokenId ) external; /** * @notice The contract MUST allow multiple operators per owner. * @dev Enables or disables approval for a third party ("operator") to manage all of * `msg.sender`'s assets. It also emits the ApprovalForAll event. * @param _operator Address to add to the set of authorized operators. * @param _approved True if the operators is approved, false to revoke approval. */ function setApprovalForAll( address _operator, bool _approved ) external; /** * @dev Returns the number of NFTs owned by `_owner`. NFTs assigned to the zero address are * considered invalid, and this function throws for queries about the zero address. * @notice Count all NFTs assigned to an owner. * @param _owner Address for whom to query the balance. * @return Balance of _owner. */ function balanceOf( address _owner ) external view returns (uint256); /** * @notice Find the owner of an NFT. * @dev Returns the address of the owner of the NFT. NFTs assigned to the zero address are * considered invalid, and queries about them do throw. * @param _tokenId The identifier for an NFT. * @return Address of _tokenId owner. */ function ownerOf( uint256 _tokenId ) external view returns (address); /** * @notice Throws if `_tokenId` is not a valid NFT. * @dev Get the approved address for a single NFT. * @param _tokenId The NFT to find the approved address for. * @return Address that _tokenId is approved for. */ function getApproved( uint256 _tokenId ) external view returns (address); /** * @notice Query if an address is an authorized operator for another address. * @dev Returns true if `_operator` is an approved operator for `_owner`, false otherwise. * @param _owner The address that owns the NFTs. * @param _operator The address that acts on behalf of the owner. * @return True if approved for all, false otherwise. */ function isApprovedForAll( address _owner, address _operator ) external view returns (bool); } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/tokens/nf-token.sol pragma solidity ^0.8.0; /** * @dev Implementation of ERC-721 non-fungible token standard. */ contract NFToken is ERC721, SupportsInterface { using AddressUtils for address; /** * @dev List of revert message codes. Implementing dApp should handle showing the correct message. * Based on 0xcert framework error codes. */ string constant ZERO_ADDRESS = "003001"; string constant NOT_VALID_NFT = "003002"; string constant NOT_OWNER_OR_OPERATOR = "003003"; string constant NOT_OWNER_APPROVED_OR_OPERATOR = "003004"; string constant NOT_ABLE_TO_RECEIVE_NFT = "003005"; string constant NFT_ALREADY_EXISTS = "003006"; string constant NOT_OWNER = "003007"; string constant IS_OWNER = "003008"; /** * @dev Magic value of a smart contract that can receive NFT. * Equal to: bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")). */ bytes4 internal constant MAGIC_ON_ERC721_RECEIVED = 0x150b7a02; /** * @dev A mapping from NFT ID to the address that owns it. */ mapping (uint256 => address) internal idToOwner; /** * @dev Mapping from NFT ID to approved address. */ mapping (uint256 => address) internal idToApproval; /** * @dev Mapping from owner address to count of their tokens. */ mapping (address => uint256) private ownerToNFTokenCount; /** * @dev Mapping from owner address to mapping of operator addresses. */ mapping (address => mapping (address => bool)) internal ownerToOperators; /** * @dev Guarantees that the msg.sender is an owner or operator of the given NFT. * @param _tokenId ID of the NFT to validate. */ modifier canOperate( uint256 _tokenId ) { address tokenOwner = idToOwner[_tokenId]; require( tokenOwner == msg.sender || ownerToOperators[tokenOwner][msg.sender], NOT_OWNER_OR_OPERATOR ); _; } /** * @dev Guarantees that the msg.sender is allowed to transfer NFT. * @param _tokenId ID of the NFT to transfer. */ modifier canTransfer( uint256 _tokenId ) { address tokenOwner = idToOwner[_tokenId]; require( tokenOwner == msg.sender || idToApproval[_tokenId] == msg.sender || ownerToOperators[tokenOwner][msg.sender], NOT_OWNER_APPROVED_OR_OPERATOR ); _; } /** * @dev Guarantees that _tokenId is a valid Token. * @param _tokenId ID of the NFT to validate. */ modifier validNFToken( uint256 _tokenId ) { require(idToOwner[_tokenId] != address(0), NOT_VALID_NFT); _; } /** * @dev Contract constructor. */ constructor() { supportedInterfaces[0x80ac58cd] = true; // ERC721 } /** * @notice Throws unless `msg.sender` is the current owner, an authorized operator, or the * approved address for this NFT. Throws if `_from` is not the current owner. Throws if `_to` is * the zero address. Throws if `_tokenId` is not a valid NFT. When transfer is complete, this * function checks if `_to` is a smart contract (code size > 0). If so, it calls * `onERC721Received` on `_to` and throws if the return value is not * `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`. * @dev Transfers the ownership of an NFT from one address to another address. This function can * be changed to payable. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. * @param _data Additional data with no specified format, sent in call to `_to`. */ function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes calldata _data ) external override { _safeTransferFrom(_from, _to, _tokenId, _data); } /** * @notice This works identically to the other function with an extra data parameter, except this * function just sets data to "". * @dev Transfers the ownership of an NFT from one address to another address. This function can * be changed to payable. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. */ function safeTransferFrom( address _from, address _to, uint256 _tokenId ) external override { _safeTransferFrom(_from, _to, _tokenId, ""); } /** * @notice The caller is responsible to confirm that `_to` is capable of receiving NFTs or else * they may be permanently lost. * @dev Throws unless `msg.sender` is the current owner, an authorized operator, or the approved * address for this NFT. Throws if `_from` is not the current owner. Throws if `_to` is the zero * address. Throws if `_tokenId` is not a valid NFT. This function can be changed to payable. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. */ function transferFrom( address _from, address _to, uint256 _tokenId ) external override canTransfer(_tokenId) validNFToken(_tokenId) { address tokenOwner = idToOwner[_tokenId]; require(tokenOwner == _from, NOT_OWNER); require(_to != address(0), ZERO_ADDRESS); _transfer(_to, _tokenId); } /** * @notice The zero address indicates there is no approved address. Throws unless `msg.sender` is * the current NFT owner, or an authorized operator of the current owner. * @dev Set or reaffirm the approved address for an NFT. This function can be changed to payable. * @param _approved Address to be approved for the given NFT ID. * @param _tokenId ID of the token to be approved. */ function approve( address _approved, uint256 _tokenId ) external override canOperate(_tokenId) validNFToken(_tokenId) { address tokenOwner = idToOwner[_tokenId]; require(_approved != tokenOwner, IS_OWNER); idToApproval[_tokenId] = _approved; emit Approval(tokenOwner, _approved, _tokenId); } /** * @notice This works even if sender doesn't own any tokens at the time. * @dev Enables or disables approval for a third party ("operator") to manage all of * `msg.sender`'s assets. It also emits the ApprovalForAll event. * @param _operator Address to add to the set of authorized operators. * @param _approved True if the operators is approved, false to revoke approval. */ function setApprovalForAll( address _operator, bool _approved ) external override { ownerToOperators[msg.sender][_operator] = _approved; emit ApprovalForAll(msg.sender, _operator, _approved); } /** * @dev Returns the number of NFTs owned by `_owner`. NFTs assigned to the zero address are * considered invalid, and this function throws for queries about the zero address. * @param _owner Address for whom to query the balance. * @return Balance of _owner. */ function balanceOf( address _owner ) external override view returns (uint256) { require(_owner != address(0), ZERO_ADDRESS); return _getOwnerNFTCount(_owner); } /** * @dev Returns the address of the owner of the NFT. NFTs assigned to the zero address are * considered invalid, and queries about them do throw. * @param _tokenId The identifier for an NFT. * @return _owner Address of _tokenId owner. */ function ownerOf( uint256 _tokenId ) external override view returns (address _owner) { _owner = idToOwner[_tokenId]; require(_owner != address(0), NOT_VALID_NFT); } /** * @notice Throws if `_tokenId` is not a valid NFT. * @dev Get the approved address for a single NFT. * @param _tokenId ID of the NFT to query the approval of. * @return Address that _tokenId is approved for. */ function getApproved( uint256 _tokenId ) external override view validNFToken(_tokenId) returns (address) { return idToApproval[_tokenId]; } /** * @dev Checks if `_operator` is an approved operator for `_owner`. * @param _owner The address that owns the NFTs. * @param _operator The address that acts on behalf of the owner. * @return True if approved for all, false otherwise. */ function isApprovedForAll( address _owner, address _operator ) external override view returns (bool) { return ownerToOperators[_owner][_operator]; } /** * @notice Does NO checks. * @dev Actually performs the transfer. * @param _to Address of a new owner. * @param _tokenId The NFT that is being transferred. */ function _transfer( address _to, uint256 _tokenId ) internal virtual { address from = idToOwner[_tokenId]; _clearApproval(_tokenId); _removeNFToken(from, _tokenId); _addNFToken(_to, _tokenId); emit Transfer(from, _to, _tokenId); } /** * @notice This is an internal function which should be called from user-implemented external * mint function. Its purpose is to show and properly initialize data structures when using this * implementation. * @dev Mints a new NFT. * @param _to The address that will own the minted NFT. * @param _tokenId of the NFT to be minted by the msg.sender. */ function _mint( address _to, uint256 _tokenId ) internal virtual { require(_to != address(0), ZERO_ADDRESS); require(idToOwner[_tokenId] == address(0), NFT_ALREADY_EXISTS); _addNFToken(_to, _tokenId); emit Transfer(address(0), _to, _tokenId); } /** * @notice This is an internal function which should be called from user-implemented external burn * function. Its purpose is to show and properly initialize data structures when using this * implementation. Also, note that this burn implementation allows the minter to re-mint a burned * NFT. * @dev Burns a NFT. * @param _tokenId ID of the NFT to be burned. */ function _burn( uint256 _tokenId ) internal virtual validNFToken(_tokenId) { address tokenOwner = idToOwner[_tokenId]; _clearApproval(_tokenId); _removeNFToken(tokenOwner, _tokenId); emit Transfer(tokenOwner, address(0), _tokenId); } /** * @notice Use and override this function with caution. Wrong usage can have serious consequences. * @dev Removes a NFT from owner. * @param _from Address from which we want to remove the NFT. * @param _tokenId Which NFT we want to remove. */ function _removeNFToken( address _from, uint256 _tokenId ) internal virtual { require(idToOwner[_tokenId] == _from, NOT_OWNER); ownerToNFTokenCount[_from] -= 1; delete idToOwner[_tokenId]; } /** * @notice Use and override this function with caution. Wrong usage can have serious consequences. * @dev Assigns a new NFT to owner. * @param _to Address to which we want to add the NFT. * @param _tokenId Which NFT we want to add. */ function _addNFToken( address _to, uint256 _tokenId ) internal virtual { require(idToOwner[_tokenId] == address(0), NFT_ALREADY_EXISTS); idToOwner[_tokenId] = _to; ownerToNFTokenCount[_to] += 1; } /** * @dev Helper function that gets NFT count of owner. This is needed for overriding in enumerable * extension to remove double storage (gas optimization) of owner NFT count. * @param _owner Address for whom to query the count. * @return Number of _owner NFTs. */ function _getOwnerNFTCount( address _owner ) internal virtual view returns (uint256) { return ownerToNFTokenCount[_owner]; } /** * @dev Actually perform the safeTransferFrom. * @param _from The current owner of the NFT. * @param _to The new owner. * @param _tokenId The NFT to transfer. * @param _data Additional data with no specified format, sent in call to `_to`. */ function _safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes memory _data ) private canTransfer(_tokenId) validNFToken(_tokenId) { address tokenOwner = idToOwner[_tokenId]; require(tokenOwner == _from, NOT_OWNER); require(_to != address(0), ZERO_ADDRESS); _transfer(_to, _tokenId); if (_to.isContract()) { bytes4 retval = ERC721TokenReceiver(_to).onERC721Received(msg.sender, _from, _tokenId, _data); require(retval == MAGIC_ON_ERC721_RECEIVED, NOT_ABLE_TO_RECEIVE_NFT); } } /** * @dev Clears the current approval of a given NFT ID. * @param _tokenId ID of the NFT to be transferred. */ function _clearApproval( uint256 _tokenId ) private { delete idToApproval[_tokenId]; } } // File: https://github.com/0xcert/ethereum-erc721/src/contracts/tokens/nf-token-metadata.sol pragma solidity ^0.8.0; /** * @dev Optional metadata implementation for ERC-721 non-fungible token standard. */ contract NFTokenMetadata is NFToken, ERC721Metadata { /** * @dev A descriptive name for a collection of NFTs. */ string internal nftName; /** * @dev An abbreviated name for NFTokens. */ string internal nftSymbol; /** * @dev Mapping from NFT ID to metadata uri. */ mapping (uint256 => string) internal idToUri; /** * @notice When implementing this contract don't forget to set nftName and nftSymbol. * @dev Contract constructor. */ constructor() { supportedInterfaces[0x5b5e139f] = true; // ERC721Metadata } /** * @dev Returns a descriptive name for a collection of NFTokens. * @return _name Representing name. */ function name() external override view returns (string memory _name) { _name = nftName; } /** * @dev Returns an abbreviated name for NFTokens. * @return _symbol Representing symbol. */ function symbol() external override view returns (string memory _symbol) { _symbol = nftSymbol; } /** * @dev A distinct URI (RFC 3986) for a given NFT. * @param _tokenId Id for which we want uri. * @return URI of _tokenId. */ function tokenURI( uint256 _tokenId ) external override view validNFToken(_tokenId) returns (string memory) { return _tokenURI(_tokenId); } /** * @notice This is an internal function that can be overriden if you want to implement a different * way to generate token URI. * @param _tokenId Id for which we want uri. * @return URI of _tokenId. */ function _tokenURI( uint256 _tokenId ) internal virtual view returns (string memory) { return idToUri[_tokenId]; } /** * @notice This is an internal function which should be called from user-implemented external * burn function. Its purpose is to show and properly initialize data structures when using this * implementation. Also, note that this burn implementation allows the minter to re-mint a burned * NFT. * @dev Burns a NFT. * @param _tokenId ID of the NFT to be burned. */ function _burn( uint256 _tokenId ) internal override virtual { super._burn(_tokenId); delete idToUri[_tokenId]; } /** * @notice This is an internal function which should be called from user-implemented external * function. Its purpose is to show and properly initialize data structures when using this * implementation. * @dev Set a distinct URI (RFC 3986) for a given NFT ID. * @param _tokenId Id for which we want URI. * @param _uri String representing RFC 3986 URI. */ function _setTokenUri( uint256 _tokenId, string memory _uri ) internal validNFToken(_tokenId) { idToUri[_tokenId] = _uri; } } // File: NFT721.sol pragma solidity 0.8.0; contract Unknown is NFTokenMetadata, Ownable { constructor() { //define nft name of choice and symbol nftName = "Unknown: Error 404"; nftSymbol = "CloneX"; } function mint(address _to, uint256 _tokenId, string calldata _uri) external onlyOwner { super._mint(_to, _tokenId); super._setTokenUri(_tokenId, _uri); } }
Contract Security Audit
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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"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":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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":[],"name":"CANNOT_TRANSFER_TO_ZERO_ADDRESS","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"NOT_CURRENT_OWNER","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_approved","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","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":"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"},{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"string","name":"_uri","type":"string"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"_name","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"_owner","type":"address"}],"stateMutability":"view","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":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"_symbol","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Deployed Bytecode
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Swarm Source
ipfs://29176fe6c0accfac7915b72289d59cbe2beb8633e637b7b952f09cd434873652
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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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.