ERC-721 The Hard Way

Events

• event Transfer(address indexed _from, address indexed _to, uint256 indexed _tokenId);
• event Approval(address indexed _owner, address indexed _approved, uint256 indexed _tokenId);
• event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);

Methods

• function balanceOf(address _owner) external view returns (uint256);

• function ownerOf(uint256 _tokenId) external view returns (address);

• function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes data) external payable;

• function safeTransferFrom(address _from, address _to, uint256 _tokenId) external payable;

• function transferFrom(address _from, address _to, uint256 _tokenId) external payable;

• function approve(address _approved, uint256 _tokenId) external payable;

• function setApprovalForAll(address _operator, bool _approved) external;

• function getApproved(uint256 _tokenId) external view returns (address);

• function isApprovedForAll(address _owner, address _operator) external view returns (bool);

• function supportsInterface(bytes4 interfaceID) external view returns (bool); (from ERC165 – Optional)

• function mint(address to,uint256 tokenId) external returns (uint256 tokenId); (not in specs)

ERC-721-Receiver

• function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes _data) external returns(bytes4)

Tests

Test cases can found at humayunj/ERC-721-Yul-tests

Notes

Minting is not specified in EIP, so there's no standard for it.