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Qualified & legally sign throughout Europe.

Our eID hub: We have integrated providers for qualified electronic signatures (QES) across Europe. This is a huge advantage when obtaining and issuing legally valid signatures.

Interoperable qualified signing in Europe

Obtaining signatures digitally across countries can be time-consuming and tedious. For example, if you have to sign a document for one person from Estonia in a qualified manner and then later for another person from Germany, it may be necessary to obtain new identification each time. Although this process is not complicated, in practice it can be time consuming and unnecessary if done repeatedly.

sproof offers a solution to this and allows existing identifications to be used directly. Thus, when a document is signed with sproof, there is no need to go through a new identification process, but existing identifications, such as ID Austria, can be used directly.

The advantages and features of the eID hub in a nutshell

What is the eID Hub?

Why does the eID Hub save resources?

Why qualified electronic signing?

Limitless digital signing according to the highest signature standard

We are continuously updating the eID Hub with expanded coverage and new authentication methods to support your business.

Swisscom Trust Services

Swiss provider of electronic signature & online identity solutions, eIDAS and ZertES compliant.

D-Trust (sign-me)

D-Trust GmbH, headquartered in Berlin, is a company of the Bundesdruckerei Group and a certified trust service provider. The company offers products in accordance with the eIDAS standard.

ID Austria (Handy-Signatur)

ID Austria will replace the cell phone signature in Austria as electronic proof of identity in the future. It makes it possible to prove one's identity digitally using the "Digital Office" app.


Evrotrust is a certified Bulgarian trust service provider offering identity verification and e-signatures.


yes® is an open banking ecosystem from Germany that can also be used to create advanced and qualified electronic signatures.


SPID is Italy's public digital identity system (Sistema Pubblico di Identità Digitale, SPID).

Finnish eID (FINeID)

In Finland, qualified certificates for electronic signatures are provided by the Digital and Population Data Services Agency (DVV).

Estonian ID-card (EstEID)

Estonia ID is a state identification number used in Estonia. It is used to uniquely identify individuals and is thus an important basis for many official procedures and transactions in the country.

Belgian eID (.beID)

The Belgian eID (.beID) is an electronic identity card issued to every Belgian over the age of 12.

Croatian eIDCard (eOI)

Croatian citizens can use their eID for all electronic services of the e-Citizen system as well as for all other electronic services in Croatia regardless of the service provider.

Latvian eID (eParaksts)

Latvian eID is an identity document that contains an e-signature for signing documents and verifying a person's e-identity in a digital environment.

Autenticaçã Citizen Card

The Autenticação ID Card can be used in Portugal to identify and authenticate citizens and can be used for digital signing.


The Smart-ID is currently used in Estonia, Latvia and Lithuania. It can be used for registering with electronic services, for online banking and for signing documents.


Mobile-ID is an electronic identity document that is fully supported by the government in Estonia and is gaining popularity in Lithuania. Its online use is very similar to an ID card, but no smart card reader is required.


Uanataca is an international trust service provider that develops digitisation solutions with maximum legal guarantees.


CertEurope is the leading certification body in France and the InfoCert Group's Trusted Third Party for France.


SimplySign is a modern tool for signing and validating any electronic document. It is the first of its kind offered on the Polish market and guarantees 100 % mobility.


Since 2006, certSIGN has become the most important Romanian provider of trust services and a pioneer in the Romanian market by introducing paperless technologies in business processes.

Paperless webSIGN (by certSIGN)

Paperless webSIGN is a web application that allows you to upload, remotely sign and download multiple documents.

Everything you should know about the qualified electronic signature

What is a qualified electronic signature (QES)?

In today's digital world, it is important to ensure the authenticity and integrity of electronic documents. One way to achieve this is to use a qualified electronic signature (QES).

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How do I obtain a qualified electronic signature (QES)?

To obtain a qualified electronic signature (QES), you have to identify yourself once and set up 2-factor authentication. For qualified signing, one then only has to authenticate.

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How does the qualified digital signature work?

The ability of digital signatures to ensure the integrity and authenticity of electronic documents while indicating the signer's consent enables people to interact online and share information securely.

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Our QES interface explained in 2 min

Learn how integrated signature providers can help you accelerate your signature workflows across borders.

Learn more

Others talk. We do the math. Learn about the advantages of the signature in numbers.

"We understand how to honestly assess the potential of digital signatures depending on use cases and company culture." - Heidi Boller, Head of Sales

How does Swisscom identification work?

Where is there a writing requirement everywhere (especially in DE & AT) for QES?

What if someone is supposed to countersign qualified but does not have anything to sign qualified? How does the person get validation?