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Permit2 ​

0x000000000022D473030F116dDEE9F6B43aC78BA3 | ABI JSON

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Permit2 enables advanced token approval patterns, allowing for more flexible and secure token transfers through signatures.

State Variables ​

allowance ​

Maps users to tokens to spender addresses and information about the approval on the token.

solidity
mapping(address => mapping(address => mapping(address => PackedAllowance))) public allowance

nonceBitmap ​

A map from token owner address and a caller specified word index to a bitmap. Used to set bits in the bitmap to prevent against signature replay protection.

solidity
mapping(address => mapping(uint256 => uint256)) public nonceBitmap

Functions ​

approve ​

Approves the spender to use up to amount of the specified token up until the expiration.

solidity
function approve(address token, address spender, uint160 amount, uint48 expiration) external

invalidateNonces ​

Invalidate nonces for a given (token, spender) pair.

solidity
function invalidateNonces(address token, address spender, uint48 newNonce) external

invalidateUnorderedNonces ​

Invalidates the bits specified in mask for the bitmap at the word position.

solidity
function invalidateUnorderedNonces(uint256 wordPos, uint256 mask) external

lockdown ​

Enables performing a "lockdown" of the sender's Permit2 identity by batch revoking approvals.

solidity
function lockdown(TokenSpenderPair[] calldata approvals) external

permit ​

Permit a spender to a given amount of the owners token via the owner's EIP-712 signature.

solidity
function permit(address owner, PermitSingle memory permitSingle, bytes calldata signature) external

permit ​

Permit a spender to a given amount of the owners token via the owner's EIP-712 signature.

solidity
function permit(address owner, PermitBatch memory permitBatch, bytes calldata signature) external

permitTransferFrom ​

Transfers a token using a signed permit message.

solidity
function permitTransferFrom(
    PermitTransferFrom memory permit,
    SignatureTransferDetails calldata transferDetails,
    address owner,
    bytes calldata signature
) external

permitTransferFrom ​

Transfers a token using a signed permit message.

solidity
function permitTransferFrom(
    PermitBatchTransferFrom memory permit,
    SignatureTransferDetails[] calldata transferDetails,
    address owner,
    bytes calldata signature
) external

permitWitnessTransferFrom ​

Transfers a token using a signed permit message.

solidity
function permitWitnessTransferFrom(
    PermitTransferFrom memory permit,
    SignatureTransferDetails calldata transferDetails,
    address owner,
    bytes32 witness,
    string calldata witnessTypeString,
    bytes calldata signature
) external

permitWitnessTransferFrom ​

Transfers a token using a signed permit message.

solidity
function permitWitnessTransferFrom(
    PermitBatchTransferFrom memory permit,
    SignatureTransferDetails[] calldata transferDetails,
    address owner,
    bytes32 witness,
    string calldata witnessTypeString,
    bytes calldata signature
) external

transferFrom ​

Transfer approved tokens from one address to another.

solidity
function transferFrom(address from, address to, uint160 amount, address token) external

transferFrom ​

Transfer approved tokens from one address to another.

solidity
function transferFrom(AllowanceTransferDetails[] calldata transferDetails) external