DeepMind’s AlphaProof Code generated 6.5 million lines of Lean proofs for key Signal cryptographic security properties at machine-code level, researchers report. The proofs rely on human-approved specifications and cryptographic assumptions.

Google DeepMind’s original AlphaProof Code workflow diagram: human-approved Lean specifications, compiled Signal code, an untrusted prover team and a trusted proof-checking gatekeeper.

Published 10 Nov 2026 · 13:01 UTC

Google DeepMind ↗ · Source dated 10 Nov 2026

DeepMind’s AlphaProof Code generated 6.5 million lines of Lean proofs for key Signal cryptographic security properties at machine-code level, researchers report. The proofs rely on human-approved specifications and cryptographic assumptions. · ournews.ai