RFC-8905: The 'payto' URI Scheme for Payments



A unified URI scheme for all payment target types allows applications
to offer user interactions with URIs that represent payment targets,
simplifying the introduction of new payment systems and applications.

This can easily be used for Ethereum and L2 “payments” for integration with payment platforms. There are examples for Bitcoin and Interledger Protocol Address w/ ENS-style addressing.


ERC: Standard URI scheme with metadata, value and byte code

EIP-681: URL Format for Transaction Requests