Anthropic 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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Anthropic is developing an open-source system called FlashProve that uses cryptographic proof to verify which AI model produced a specific output. The system works by having AI labs publish a "fingerprint" for each model that can later be matched to outputs and verified mathematically, without revealing the model's internal weights or proprietary information. This matters because it could prevent AI companies from secretly substituting cheaper models to cut costs, swapping in more expensive models to inflate performance claims, or allow third parties to verify that a task was completed by a specific advanced model. The researchers have released technical specifications and working code publicly on GitHub as intermediate progress, with no current plans to deploy it at any lab.
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