On December 11th, x402 v2 was released. This is a major upgrade to HTTP-native micropayments. This post covers the key changes in v2 and recent updates to the awesome-x402-on-base repository.Full Spec: x402 v2 Protocol Specification (Korean) | Official Spec (English)What's New in v2HTTP Headers: X-PAYMENT → PAYMENT-SIGNATURE, PAYMENT-REQUIREDNetwork Notation: base-sepolia → eip155:84532 (CAIP standard)Chain Support: Single chain → Multichain (Base, Solana, Polygon, etc.)Transports: HTTP only ...