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The x402 protocol, spearheaded by Coinbase, has launched a significant V2 upgrade. Initially introduced in May with the core concept of reactivating the long-dormant HTTP 402 status code to embed payment logic directly within network requests, the protocol has now processed over 100 million payments across diverse scenarios, including API calls and AI agent compute resource purchases. The V1 architecture, while simple, revealed limitations in cross-chain support, scalability, identity verification, and duplicate payments. The V2 release addresses these issues with a deep architectural overhaul focused on enhanced user experience and developer flexibility. **Key Upgrades in x402 V2:** **1. Wallet Identity & Reusable Sessions:** V2 integrates wallet-based identity (e.g., Sign-In-With-X via […]<\/p>","protected":false},"author":1,"featured_media":4201,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-4202","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-market-insight"],"_links":{"self":[{"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/posts\/4202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/comments?post=4202"}],"version-history":[{"count":0,"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/posts\/4202\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/media\/4201"}],"wp:attachment":[{"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/media?parent=4202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/categories?post=4202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/theexchain.com\/ja\/wp-json\/wp\/v2\/tags?post=4202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}