Receipt is a Python package and CLI tool for creating and verifying chained manifests of agent-produced records. It uses dual RFC 3161 witnesses, pinned Ed25519 signatures, push attestation, and chronology tiers to ensure tamper-proof custody. Records can be verified offline with a single command; the project is licensed under Apache-2.0.
receipt is a Developer Tools product. It focuses on proving verifiable custody and chronological integrity of records produced by autonomous agents. receipt is an open-source project aimed at developers. The project is open source (Apache-2.0). It runs on the command line.
TheAxiomFoundation builds and maintains receipt, and the product first shipped in 2026. The project is developed in the open on GitHub with 33 commits in the last 90 days. Among its 4 catalogued features are chained manifests, RFC 3161 witnesses, and ed25519 signatures.
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