ERC721 with permit
Extension to ERC721 that includes a permit function for signature based approvals
function PERMIT_TYPEHASH() external pure returns (bytes32) pure external
The permit typehash used in the permit signature
Returns:
| Name | Type | Description |
|---|---|---|
function DOMAIN_SEPARATOR() external view returns (bytes32) view external
The domain separator used in the permit signature
Returns:
| Name | Type | Description |
|---|---|---|
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 |
|---|---|---|
[0]
bytes32
The typehash for the permit
[0]
bytes32
The domain separator used in encoding of permit signature
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`
