Get Europe's most advanced digital signature

Digitize your signature workflows with Europe's most advanced and most trusted digital signature.
100% legally binding and 100% GDPR-compliant  


We make digitalization easy. Start digital signing with Europe's most advanced signatures within minutes.
more about sproof
sproof is an Austrian-based technology company
sproof is a startup company co founded by Clemens Brunner, Fabian Knirsch and Erich Höpoldseder.
100% legally-binding and GDPR-compliant
Our digital signature product is legally-binding according to the eIDAS regulation and fully GDPR-comliant.
sproof is reinventing
digital signing
sproof allows you to fast and easy integrate digital signatures in your existing processes and tools.
sproof is for everyone
sproof offers an API for easy integration into your existing application.


Discover what is new. Follow the sproof blog.
Easter-update brings major new features for sproof sign users
sproof sign gets even better, the price stays the same. For all existing and new customers. Here is a preview of some of the major updates that...
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sproof sign: an innovation suitable for public administration
The digital signature tool sproof sign received the IÖB award, a seal for highly innovative solutions that help to improve public administration...
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Home office: Why you should sign documents digitally from now on
Numerous documents are sent to people in the home office for approval by signature. Read here why scanning a signed document is a bad idea and what...
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Together with our customers, we shape the
digital future.
Christoph - Software Engineer, Information Service
"Setting up the digital signature with sproof was done in less than 40 minutes. A simple API call was the only thing we had to integrate into our system."
Daniel Nobis - CIO, Paracelsus Medizinische Privatuniversität
"sproof can be implemented within the of a couple of hours, it is cost efficient and easy to use. We can also participate in an intentional network easily."
Wirtschaftskammer Salzburg
Paracelsus Medizinische Privatsuniversität
Modul University
Berchtesgadener Land
FH Salzburg
FH Krems
FH Kärnten


If you need help, have questions or feedback about our company or products, please do not hesitate to contact us. Please do not forget to check out our FAQs.