ERC721Receiver
ERC721Receiver is the standard interface that contracts may implement to receive ERC-721 tokens safely. It is part of the ERC-721 standard on Ethereum and addresses the risk that tokens could be sent to contracts that do not know how to handle them. The interface defines a single function: onERC721Received(address operator, address from, uint256 tokenId, bytes data) external returns (bytes4).
During a safe transfer, when an ERC-721 token is sent to a contract, the token contract checks
Implementers should consider the interaction’s implications, as the onERC721Received call occurs during the transfer and may