We value your privacy!

We use cookies on our website to offer you the best experience. By clicking "accept & close", you agree to the use of all cookies according to our and our . If you do not make a selection, our default cookie settings will be applied. You can change your settings at any time.

What is a digital signature?

Invalid Date by 
Home > FAQs > 

What is a digital signature?

A document to be signed is digitally signed by creating a unique digital fingerprint (hash value) of the document and signing it cryptographically. The signature can be applied directly to the digital document (PDF) and allows the identity of the signer to be established. If the document is subsequently modified, e.g. by changing the content, the digital signature is no longer valid because the digital fingerprint changes. This means that subsequent changes can be detected (integrity).

Why sproof sign?Highest security and compliance paired with an "all-in-one" functionality make sproof sign the top European alternative on the e-signature platform market. 100% developed and hosted in Europe.
sproof sign is currently the highest-rated e-signature provider on the independent review platform OMR Reviews and has also been certified by CRIF GmbH with the 'ESG SCORE: A' for sustainability.