• The Standard for Cloud Signatures

    A global consortium pioneering open digital signatures for mobile and the web

    #OpenSignature

The Consortium

The Cloud Signature Consortium is a global group of industry, government, and academic organizations committed to driving standardization of highly secure and compliant digital signatures in the cloud.

Inspired by the rigorous requirements of the European Union’s Regulation on Identification and Trust Services (eIDAS), our common technical specification helps ease solution interoperability, streamlines compliance with e-signature regulations, and opens the market for uniform adoption of cloud-based digital signatures around  the world.

eIDAS and beyond

Regulations like eIDAS – European Union’s Regulation on Identification and Trust Services – are setting rigorous requirements for secure signatures, in a way that is influencing the entire global industry.

The Cloud Signature Consortium aims to make it simple for businesses and governments to successfully comply with regulations like eIDAS. Our vision is to create a single digital market, across Europe, and around the world.

Changing the digital signature landscape

By simplifying and streamlining digital signing experiences, the Cloud Signature Consortium specification will have a remarkable impact on the cloud signature landscape. Here is what we intend to achieve.

Secure transactions, on the go

Our technical specification enables secure signing transactions through web browsers and mobile devices, from your desk or on the go!

Cloud storage, no download

Recipients will be able to easily sign documents stored in the cloud with any device, without having to download them first.

Simple certificate ownership

No complex renewal procedures, no risk of token loss or theft: keys and certificates will be fully managed by Trust Service Providers in the cloud.

Easy deployment for end users

Easier, faster, better! No more smart cards or USB tokens. No more drivers to install. No more client platform dependencies.

The Consortium members

The Cloud Signature Consortium is an international group of industry and academic experts, including solutions, technology, and trust service providers.

News

CSC Member Insights Session Explores EU Mercosur Agreement and Welcomes CSC’s New Members

March 26, 2026

As global trade evolves, one thing is becoming increasingly clear. Trade agreements alone are not enough. Digital trust must follow. This was the focus of the latest Member Insights session hosted by the Cloud Signature Consortium on 24 March 2026, where members came together to explore the implications of the EU Mercosur Free Trade Agreement […]

CSC Interoperability Event 2026 Concludes in Bucharest with Strong Industry Momentum

March 24, 2026

The Cloud Signature Consortium (CSC) successfully concluded its Interoperability Event 2026, held on 17–18 March in Bucharest and hosted by certSIGN. Bringing together EUDI Wallet providers, Qualified Trust Service Providers (QTSPs), and technology innovators from across Europe, the event marked an important step forward in advancing interoperability within the European Digital Identity ecosystem. Over two […]

CSC Report: EUID Wallet – How to implement Free QES

September 11, 2025

View the paper here: EUDI Wallet – How to implement Free QES by the Cloud Signature Consortium (CSC).pdf This short paper outlines two possible implementation models for providing free QES in the EUDI Wallet, a fully public infrastructure or a public-private partnership. While the paper is not for public distribution, we encourage you to share it […]