receiptaTamper-evident receipts for every AI decision

Ed25519-signed, hash-chained, offline-verifiable. Wrap your LLM calls and every decision becomes a cryptographically attested record.

Offline verification

Verify a receipt chain with no network and no vendor service. Only the receipt files and a trusted public key are needed.

One consistent receipt format across OpenAI, Anthropic, and the Vercel AI SDK. No fork — a fetch hook and a telemetry integration.

A published, versioned JSON receipt schema (RFC 8785 canonical). Map to DSSE/in-toto or OCSF for auditors.

The trust foundation (@receipta/core) has zero runtime dependencies — Node crypto only. No supply chain in the load-bearing code.

npm publishes carry Sigstore provenance attestations. Reproducible builds via a pinned lockfile and corepack.

Permissively licensed. DCO (not CLA) for contributions.