Verify a record
Upload a PDF or paste a record link. We'll check it against the chain and tell you whether it's genuine, tampered, or unknown to us.
Never accept a screenshot of a verification page as proof.
Screenshots can be doctored. The only authoritative way to confirm a record is
to navigate yourself to
secure.kayson.hu/verify
and re-upload the original document. The badge and authentic-content images on this page are
server-issued and contain QR codes you can scan to land on our authoritative receipt page.
LIVE — if these dots aren't moving, you're looking at a screenshot.Drag a Tamperproof PDF (or JSON proof bundle) here, or
Reminder: if you came to this verdict from a screenshot or a forwarded image,
go to
secure.kayson.hu/verify and upload the file yourself.
Live page — moving dots confirm this isn't a screenshot.How this works
Every Tamperproof record carries an Ed25519 signature, a per-workspace hash chain link, and an external timestamp from an RFC 3161 TSA plus a Bitcoin anchor. We bake all of that into the PDF you download. When you upload one here, we:
- Pull the embedded proof out of the PDF.
- Re-run the cryptographic checks (signature, record hash) without trusting any of our own servers.
- Fetch the live record from the chain and compare hashes.
If anyone — including us — alters either side after the fact, the comparison fails. Learn more about why this is trustworthy →