algovoi-tap-verifier 0.1.0

Offline verifier for AlgoVoi TAP receipts (Visa Trusted Agent Protocol post-authentication audit trail). Apache-2.0.

algovoi-tap-verifier

Verify an AlgoVoi TAP receipt offline, with no AlgoVoi software. For the Visa Trusted Agent Protocol ecosystem (trusted-agent-protocol#16, post-authentication receipt signing).

An AlgoVoi TAP receipt is a JCS-canonical (RFC 8785) preimage carrying the two-sided audit fact (authorization_ref + transaction_hash + timestamp/sequence), a content-addressed receipt_id, an Ed25519 signature (TAP-native), and optionally a Falcon-1024 post-quantum signature. This package re-derives receipt_id and checks Ed25519 with only cryptography + rfc8785; install the pqc extra to also check Falcon-1024.

from algovoi_tap_verifier import verify_tap_receipt
r = verify_tap_receipt(receipt, ed25519_public_key=ed_pub_raw_32_bytes)
assert r.ok

algovoi-tap-verifier receipt.json --ed25519 <b64>            # CLI

Apache-2.0. Receipt emission (keystone → signed TAP receipt) is a separate commercial AlgoVoi product.