usdc.eip_3009

Documentation for eth_defi.usdc.eip_3009 Python module.

EIP-3009 transferWithAuthorization() support for Python.

• Support transferWithAuthorization() and receiveWithAuthorization() ERC-20 single-click token transfers

• EIP-3009 spec.

• JavaScript example.

• Canonical examples to construct USDC EIP-712 messages.

• See USDC payment forwarder for Enzyme protocol as an example contract

• See how to deploy the payment forwarder contract

Internally we use eth_defi.eip_712 module for managing the messages here.

Warning

Polygon bridged tokens’ transferWithAuthorization() is not compatible with EIP-3009. This includes USD Coin (PoS), or USDC on Polygon. See make_eip_3009_transfer() for workarounds.

Functions

construct_eip_3009_authorization_message(...)	Create EIP-712 message for EIP-3009 transfers.
make_eip_3009_transfer(token, from_, to, ...)	Perform an EIP-3009 transferWithAuthorization() and receiveWithAuthorization() transaction.

Classes

EIP3009AuthorizationType

EIP-3009 message types.