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ERC-721
NFT
Overview
Max Total Supply
0 ALTAVA
Holders
1,055
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
0 ALTAVALoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
SecondSkinERC721
Compiler Version
v0.8.6+commit.11564f7e
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.6; import "https://github.com/nibbstack/erc721/src/contracts/tokens/nf-token-metadata.sol"; import "https://github.com/nibbstack/erc721/src/contracts/ownership/ownable.sol"; /** * @dev This is an example contract implementation of NFToken with metadata extension. */ contract SecondSkinERC721 is NFTokenMetadata, Ownable { /** * @dev Contract constructor. Sets metadata extension `name` and `symbol`. */ constructor() { nftName = "ALTAVA Second Skin : Metamorphosis"; nftSymbol = "ALTAVA"; } /** * @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. * @param _uri String representing RFC 3986 URI. */ function mint( address _to, uint256 _tokenId, string calldata _uri ) external onlyOwner { super._mint(_to, _tokenId); super._setTokenUri(_tokenId, _uri); } function burn( uint256 _tokenId ) external onlyOwner { super._burn(_tokenId); } function setTokenUri( uint256 _tokenId, string calldata _uri ) external onlyOwner { super._setTokenUri(_tokenId, _uri); } }
// SPDX-License-Identifier: MIT 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; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./nf-token.sol"; import "./erc721-metadata.sol"; /** * @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; } }
// SPDX-License-Identifier: MIT 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); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./erc721.sol"; import "./erc721-token-receiver.sol"; import "../utils/supports-interface.sol"; import "../utils/address-utils.sol"; /** * @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]; } }
// SPDX-License-Identifier: MIT 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); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./erc165.sol"; /** * @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]; } }
// SPDX-License-Identifier: MIT 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); }
// SPDX-License-Identifier: MIT 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); }
// SPDX-License-Identifier: MIT 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); }
{ "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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":"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"},{"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":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"string","name":"_uri","type":"string"}],"name":"setTokenUri","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"}]
Contract Creation Code
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