Had ChatGPT analyze PING's contract code. Built-in EIP-3009 (transferWithAuthorization / receiveWithAuthorization / cancelAuthorization): This naturally aligns with the current trend of using x402 facilitator/SDK with USDC (EIP-3009) for **permitless** micropayments. If your token is also involved in settlement or requires proxy transfers, the existing interface can seamlessly integrate with the signature transfer flow. The first person to issue a meme using x402 is truly a genius, totally gets memes.