[Anthropic Develops FlashProve System to Verify AI Model Identity] According to a TechCrunch report on November 4th, Anthropic is developing the open-source system FlashProve, designed to verify whether an AI output originates from a specified model using cryptographic proofs. The system requires model providers to publish their model's "fingerprint," allowing users to match and verify it against the output. The fingerprint does not reveal the model's weights. Researchers state that this can be used to prevent service providers from secretly replacing models and to verify third-party claims about using specific models. Researchers have released the technical specifications and some system code, but the research is ongoing, and there are currently no plans to deploy the system at Anthropic or other labs.