Is this the PDF that was signed?
Choose a signed Lens & Muse PDF. Your browser computes its fingerprint (SHA-256) and we compare it with the one we recorded when both people signed. The file never leaves your device; only the fingerprint is sent.
Or enter the document ID and fingerprint
How this works
When both people have signed, Lens & Muse stores the SHA-256 fingerprint of the final PDF. Changing a single character, signature or page of the file changes its fingerprint completely, so a matching fingerprint means the file is byte-for-byte the one that was signed.
Why isn't the fingerprint printed in the PDF? A file cannot contain its own fingerprint: writing it in would change the file, and so the fingerprint. The PDF instead carries its document ID and the fingerprint of the agreement text (on every page), and Lens & Muse keeps the file's fingerprint, which is also in the email both people received with the PDF.
A match is shown with the signing date and the signers' initials only. We never show names or email addresses here. If a PDF doesn't match, it may have been edited, re-saved or printed to PDF again; ask the other person for the original email attachment.
Lens & Muse provides the signing tool and keeps the record; it is not a party to the agreement. See the Terms.