IERC721TokenReceiver

Git Source

Note: the ERC-165 identifier for this interface is 0x150b7a02.

Functions

onERC721Received

Handle the receipt of an 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. Note: the contract address is always the message sender.

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

Parameters

Name	Type	Description
_operator	address	The address which called safeTransferFrom function
_from	address	The address which previously owned the token
_tokenId	uint256	The NFT identifier which is being transferred
_data	bytes	Additional data with no specified format

Returns

Name	Type	Description
<none>	bytes4	bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")) unless throwing