CoinVoice has learned that the Ethereum Foundation announced the successful conclusion of the x402 Hackathon supported by the developer acceleration team, and has announced some of the winning projects, including: x402-sf (developed by Superfluid): Introducing native continuous subscription payments into the internet through end-to-end subscription infrastructure; Cheddr Payment Channels x402: Using x402 payment channels to enable efficient recurring and streaming micro-payments; x402r (developed by BackTrackCo): A refund request tool for cases where data services purchased with x402 payments are not delivered.