Anthropic is developing FlashProve, a model identity verification system
What happened
On 4 November 2026, TechCrunch reported that Anthropic is developing an open-source system called FlashProve that uses cryptographic proofs to show that a given output really came from a specific model, preventing models from being impersonated or quietly swapped. The system requires model providers to publish a model fingerprint that does not reveal the weights, and verification is light enough to run on local devices. The research team has released the technical specification and some code on GitHub under an open-source licence, but says the research is still ongoing and there are no plans to deploy it at Anthropic or other labs for now.
Written by AI from the reports · updated 3 h ago
Timeline
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- TechCrunch · AIAnthropic is working on a system to prove AI models’ identity
Called FlashProve, the system would let anyone check that an AI response really came from the model it claims to be from.
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