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x402 V2 Launch: Multi-chain and Bank Card Integration Drive AI Native Payment Ecosystem Expansion
x402 Payment Protocol officially released version 2 on December 11, 2025, further strengthening its core position in AI-native payments and autonomous machine trading. Since launching six months ago, x402 has completed over 100 million transactions through API, AI agents, and Web services. The V2 version incorporates key upgrades accumulated during this period.
The most notable highlight of this update is the realization of a unified payment format for "multi-chain + traditional payment networks." The new protocol standardizes network and asset identification, enabling developers to seamlessly route payments between blockchains like Base, Solana, and traditional networks such as ACH and bank card networks. As a result, x402 is gradually becoming a neutral payment layer connecting crypto finance and traditional finance, simplifying cross-network settlement processes and providing more compatible payment infrastructure for AI agents, automation services, and Web applications.
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