Skip to the card

Card 643 of 9722026-09-25 issue

Observed arrival · 2026-09-25

PQ Attest turns transaction IDs into proof bundles

pqattest.com Visit website
Editorial interest 78/100 Selection signal · not a rating of the site

A service that fingerprints confirmed transactions from multiple chains, records those fingerprints on Algorand, and returns signed proof bundles.

Landing page captured for the 2026-09-25 issue.
For
Developers and agents needing verifiable transaction records
Worth noticing
The sample bundle includes source and attestation transaction IDs, a SHA-256 fingerprint, an Algorand round, and an ML-DSA-65 signature.

Field notes

The documented flow starts with an already-confirmed transaction ID: a requester completes x402 payment, then resubmits that ID. The page says it fingerprints the full record, including inner transactions and confirmation details, and writes the fingerprint to Algorand; a shortened JSON example exposes the source ID, attestation ID, ledger round, public key, and ML-DSA-65 signature. It explicitly notes that there is no separate state proof.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

One card from the complete issue

Vandalism in Demo Mode

315,813 arrived 1,000 judged 972 catalogued Enter the complete issue
pqattest.com

Landing page observed 2026-09-25. The live site may have changed.