Circle and Proof unveiled on October 19, 2026, at Money20/20 USA in Las Vegas a joint demo showing an AI agent presenting verified identity credentials and settling a payment in USDC within a single workflow. The demo relies on Proof’s x401 identity protocol, which enables selective disclosure of information, and Circle’s x402 payment protocol, which generates signed proof usable in disputes. The x401 protocol was launched in June 2026 with contributions from Visa, Circle and Okta, while x402 is backed by the Linux Foundation and supported by over 40 organizations. This convergence of identity and payments aims to enable AI agents to perform verified purchases without pre-established agreements between parties.
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