ERC721Permit
ERC721 with permit Nonfungible tokens that support an approve via signature, i.e. permit
Variables
bytes32 PERMIT_TYPEHASH constant
The permit typehash used in the permit signature
Developer note: Value is equal to keccak256("Permit(address spender,uint256 tokenId,uint256 nonce,uint256 deadline)");
Functions
DOMAIN_SEPARATOR
DOMAIN_SEPARATOR() view public
The domain separator used in the permit signature
Returns:
| Name | Type | Description |
|---|---|---|
[0] | bytes32 |
permit
permit(address,uint256,uint256,uint8,bytes32,bytes32) 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` |