Original Title: "What Are the Highlights of x402 V2? Unified Payment Interface, Identity Authentication, etc."
Author: KarenZ
Source:
Reprint: Mars Finance
The x402 protocol, led by Coinbase, was launched in May this year with a surprisingly simple core idea: to reactivate the long-idle HTTP 402 status code and embed payment logic directly into network requests.
Although the tokens related to x402 experienced a fleeting surge, over the past six months, x402 has processed over 100 million payments, covering diverse scenarios such as API paid calls, AI proxy on-demand computing resource purchases, and more.
While the architecture of V1 was straightforward, it revealed some limitations in practical applications. Especially in areas like cross-chain support, scalability, identity authentication, and duplicate payments, the original design was unable to