Offline verification

Verify a signature

Drop a proof bundle or a signed PDF below. Your browser re-checks every signature against Steek's published trust keys. No account, no upload — we never see your document.

Provide a proof

Paste proof bundle JSON

Or upload a proof bundle (.json)

Or upload a signed PDF

We read the proof bundle embedded in the PDF, in your browser. If none is found, paste the JSON from your certificate page instead.

Original document (optional)

Add the original file to confirm the signature covers your exact document, not just a matching fingerprint.

This verification ran entirely in your browser, against Steek's published keys. We never saw your document or your proof.

How verification works