Check a signed document

Choose a PDF that was signed through Expul Sign. We work out its fingerprint here in your browser and compare it with our record. The file itself is never uploaded.

How this works

When the last person signs, Expul Sign records a SHA-256 fingerprint of the finished file and emails it to every party. Changing anything in the file, even one character, gives a different fingerprint. A match means the copy you hold is exactly the one that was signed.