[Coinbase Incubated Payment Protocol x402 Launches V2 Version] The open-source payment protocol x402, incubated by Coinbase, has launched its V2 version, transforming single-call payment systems into a unified payment layer. x402 V2 standardizes payment interfaces and streamlines network and asset identification methods, with default support for multi-chains like Base or Solana, as well as traditional payment systems such as ACH and card networks. Additionally, x402 V2 introduces a dynamic payTo routing feature to support processes like subscriptions and allows developers to inject lifecycle hooks.