IERC721Permit

ERC721 with permit

Extension to ERC721 that includes a permit function for signature based approvals

Functions

PERMIT_TYPEHASH

function PERMIT_TYPEHASH() external pure returns (bytes32) pure external

The permit typehash used in the permit signature

Returns:

Name	Type	Description
[0]	bytes32	The typehash for the permit

DOMAIN_SEPARATOR

function DOMAIN_SEPARATOR() external view returns (bytes32) view external

The domain separator used in the permit signature

Returns:

Name	Type	Description
[0]	bytes32	The domain separator used in encoding of permit signature

permit

function permit(address spender, uint256 tokenId, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external payable payable external

Approve of a specific token ID for spending by spender via signature

Name	Type	Description
spender	address	The account that is being approved
tokenId	uint256	The ID of the token that is being approved for spending
deadline	uint256	The deadline timestamp by which the call must be mined for the approve to work
v	uint8	Must produce valid secp256k1 signature from the holder along with `r` and `s`
r	bytes32	Must produce valid secp256k1 signature from the holder along with `v` and `s`
s	bytes32	Must produce valid secp256k1 signature from the holder along with `r` and `v`