Orphograph produces tamper-evident receipts for actions taken by autonomous AI agents. It addresses the problem that self-reported logs are editable text files under the control of the operator and therefore cannot serve as reliable evidence when disputes arise or postmortems are required.
The service works by hashing each consequential action record locally on the operator's machine. The resulting fingerprint is then anchored to the Bitcoin blockchain. This process yields a dated receipt and a hosted certificate page that authorized parties can independently verify in a browser. Three properties are highlighted: the record is dated to a specific Bitcoin block so it provably existed at that time, the receipt is tamper-evident such that altering even one byte of the original record would invalidate it, and verification can be performed by any authorized party without depending on the operator's systems.
It is intended for operators who run autonomous agents that send messages, change systems, or move value. The same receipts also serve clients, counterparties, and reviewers who must accept or audit the work performed by those agents. The tool is delivered as a web service with hosted certificate pages. No additional platforms, integrations, or deployment models are specified.
Orphograph is a LLM eval & observability product. It focuses on proving that AI agent action logs have not been edited after the fact when disputes or reviews occur. It is built as a B2B product for AI agent operators and their clients or reviewers. The product ships for the web.
It is developed by Orphograph, and the product first shipped in 2025. Key capabilities include bitcoin anchoring, tamper-evident receipts, and hosted certificate pages.
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Publicly verifiable receipts for AI agent actions, anchored to Bitcoin verified by the PulseGate indexer
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