AlphaProof Code Formally Verifies Signal Protocol Code

On November 10, 2026, Google DeepMind released AlphaProof Code, a multi-LLM agent framework for formal verification. According to its official (first-hand) report, the framework is the first to mathematically prove, at the implementation level, key security properties of the actual code of the Signal protocol—that is, it performs formal security verification not just on the protocol design specification, but on the real code implementation. The event is currently at the release stage, with public information mainly coming from Google DeepMind's official announcement; no follow-up independent verification or third-party feedback has yet been reported.

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