Output Provenance: Proving What Your AI Agent Actually Said

The Problem A sports prediction agent tells you: "Bayern will beat Dortmund, 87% confidence." Bayern wins. The agent's track record looks impressive. But was that prediction actually made before the match? Or was the confidence quietly adjusted from 0.55 to 0.87 after the result was known? Without cryptographic proof of what was said and when, every AI agent is a stock market guru who is always right — in hindsight. Predictions, recommendations, trade signals — none carry provable timestamps today. Immutable Provenance Records (IPR) An IPR is a cryptographic commitment to an agent's output — created before the outcome is known, anchored permanently, and verifiable by anyone. What an IPR contains: Field Description Output Hash SHA-256 of the full output. Content stays private. Confidence Declared probability, locked at submission. Timestamp Cryptographic proof of when output was produced. Signature Agent's Ed25519 signature. Binds output to identity. Privacy by design: IPRs contain only