Verify: Is this signed document genuine?
Someone sent you a PDF that says it was signed. Drop it in and know in seconds whether it is the file that was sealed. No account needed.
You get one of three answers
Each worded exactly as the checker says it. Pick one to see it.
Genuine
This document is genuine and unchanged
It was completed here, and every byte of this file matches the copy we sealed when the last person signed.
- Document
- Consulting agreement
- Completed
- Oct 15, 2026, 4:40 PM UTC
- Signed by
- Alex Chen a••x@acme.exampleSigner, Oct 15, 2026, 9:12 AM UTC
- Priya Shah p•••a@shah.exampleSigner, Oct 15, 2026, 4:40 PM UTC
- Audit trail
- Unbroken, 14 entries checked
- Public record
- Entry 1,204 of 1,388, proof checkedPublished Oct 16, 2026, 12:30 AM UTC
- Document ID
cm2k8x4p70001qz5f9b3c6d1e- Fingerprint
9f2c41abe7d03b58c1a94e6f2d7b8a05e3c9174f6ab2d0e85c7f1934a6be20d1
Your file never leaves your device
Your browser does the reading. All that is looked up is a fingerprint of 64 characters.
Step 1
Your browser reads the file
The PDF is opened right here, on your device. Nothing is sent anywhere while it is read.
Step 2
It becomes a fingerprint
The file is reduced to 64 characters. Change one letter of the document and every one of them changes.
Step 3
We look the fingerprint up
A match means this is, byte for byte, the file we sealed, and the record behind it comes back.
What a match proves
And what no electronic signature can.
A match proves
- This is, byte for byte, the file sealed when signing finished
- Who was asked to sign, and when each of them did
- The audit trail behind it is unbroken
- It is in the public record, published every night
It does not prove
- Who was at the keyboard, which is true of every e-signature
- That a print or a scan is genuine: only the original PDF matches
Every document you send gets this.
The same seal, certificate and public record, on every plan, the free one included.