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Legally sign documents online with Uanataca

Digitally sign contracts, business documents and other important papers directly in sproof sign with an existing Uanataca identification.

Portrait

Uanataca is an international qualified trust service provider created to generate value trust in electronic transactions, through the creation and use of digital certificates in a very simple way.

Uanataca has the Conformity Assessment Report (CAR) according to the provisions of the EU Regulation 910/2014 eIDAS, and the authorisation of the Spanish Regulator, granting the consideration and category at European level as a Qualified Provider of Trust Services, QTSP.

Frequently asked questions

Why to sign digital instead of analogue?

Is the digital signature 100% legally valid?

Is sproof sign GDPR compliant?

How can I invite people to sign?

Can signature recipients also choose other signature providers?

Do externals have to pay for signature or be sproof sign user?

Use your existing qualified signature directly in sproof sign.

The digital signature 2.0 - Qualified signing across Europe without borders

In recent weeks, sproof has been working intensively on a newly developed interface for qualified signing throughout Europe. The beta version has now officially entered the test phase with some important key accounts.
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.