---
title: "Verify · DataHubz Attest"
description: "Check a signed document, receipt, certificate or proof for free, with no account. Drop the file, or enter its ID or fingerprint: it is checked in your browser."
url: https://attest.datahubz.com/verify
updated: 2026-10-12
---

Free verification · No account needed

# Verify anything Attest issued.

Receipts, signed agreements, zero-knowledge proofs, and Proof Cards, plus W3C credentials from other issuers. Paste an ID, a card link, or a credential, or drop the original file: it's fingerprinted in your browser and never uploaded.

Or drop the original file here

 Files are hashed on your device. Only the fingerprint is checked.

Rather check without us? [Download the standalone verifier](https://attest.datahubz.com/attest-verifier.html): one file that checks a signed copy on your device, with no Attest service. Every signed copy carries it too.

## What you can check here

Receipts

Prove a file or record existed, unchanged, at a point in time.

Signed agreements

Who signed and when, when the owner publishes a certificate.

Zero-knowledge proofs

A proven fact about a private agreement, and nothing more.

Proof Cards

Credentials an organization issued: signed, not revoked, and still valid.

Certificates

What an organization certified, signed by its people and itself: drop the PDF to find it.

Integration records

Events and daily state proofs a platform recorded, each its own transaction.

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Source: https://attest.datahubz.com/verify