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Legally valid online signing of documents with primeSIGN

You and your business partners can sign important contracts directly in sproof sign with an existing primeSIGN identification.

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"digital signing, simple as that " - primeSIGN is a leading manufacturer and provider of products, services and solutions for electronic signatures. With more than 20 years of experience in this field, everything we do revolves around the digitalization and optimization of signature processes. Since June 2016, we have also been an eIDAS trust service provider and operate an internationally active trust center for qualified signature and sealing certificates. Thousands of certificates are issued here every day and millions of signature transactions are processed.

Frequently asked questions

Are signatures created with Primesign legally valid?

How does the identification for the Primesign signature work?

How to sign with Primesign in sproof sign?

Can signature recipients also choose other signature providers?

Use your existing qualified signature directly in sproof sign.

sproof sign is the highest-rated provider in the e-signature category on the independent evaluation platform OMR Reviews for Q3 and Q4 2023, as well as Q1 2024.