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aqta-verify-receipt

Offline verifier for Seal receipts (ATTESTATION-v1).

Seal signs the model call at runtime. This package checks that signature without contacting Aqta. No account. Same algorithm as the npm package.

30-second check

pip install aqta-verify-receipt
aqta-verify-receipt receipt.json \
  --key gUoUhIvptKAoLTnry3VrDtOQEWggGQveLrHFVrfNqmE

Or pipe:

curl -sS https://api.aqta.ai/r/YOUR_RECEIPT_ID | aqta-verify-receipt - \
  --key gUoUhIvptKAoLTnry3VrDtOQEWggGQveLrHFVrfNqmE

ok + exit 0 means the Ed25519 signature verifies against the pinned key. Production key id: aqta-att-0a18c7c16bc18a12 (/v1/attestation/public-key).

Pin that string. Do not re-fetch it inside a verify loop.

Library

from aqta_verify_receipt import verify_receipt, fetch_published_public_key

# Once per environment: fetch, then pin somewhere you control.
trusted = fetch_published_public_key()

result = verify_receipt(receipt, trusted_public_key=trusted)
if not result.valid:
    raise ValueError(result.reason)

CLI

aqta-verify-receipt <file|-> --key <base64url> [--no-strict] [-q]
aqta-verify-receipt <file|-> --integrity-only [--no-strict] [-q]

Pinning is required by default. Without --key, pass --integrity-only (embedded key only; anyone can self-sign; result is marked untrusted).

Dependencies

cryptography (>= 42) for constant-time Ed25519. Nothing else.

What this is not

Not a governance dashboard. Not a cost router. A small verifier for one signed model-call receipt.

Licence

Apache-2.0. Aqta Technologies Limited.

If you implement or cite the ATTESTATION-v1 format itself, credit under CC-BY-4.0: see the repo CITATION.cff.