TrustNotch uses Bitcoin and Merkle trees to make AI agent audit logs tamper-proof

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A developer has launched TrustNotch, a tamper-evident audit logging service designed specifically for AI agents, after noticing that conventional logs stored on controlled servers offer no verifiable integrity guarantees. When an agent submits an action, TrustNotch returns a cryptographically signed receipt, bundles entries into a Merkle tree, and anchors each batch to the Bitcoin blockchain via OpenTimestamps. This means any subsequent alteration to a past log entry becomes mathematically detectable, and verification can be performed offline without relying on TrustNotch's servers being available. The service is built around the Model Context Protocol, allowing autonomous agents to provision their own free-tier accounts and API keys with no human involvement. TrustNotch is aimed at teams running agentic workflows who need auditable, provable governance records for regulators, auditors, or legal proceedings.

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