The Austrian startup sproof, a proud portfolio company of the European Super Angels Club (ESAC), continues its impressive growth journey. After raising over €3 million in 2023, the Salzburg-based company has now secured a new growth-oriented loan from aws, supported by Raiffeisen Salzburg. This strategic financing move effectively doubles the company’s equity base, allowing sproof to scale faster and strengthen its market position both domestically and abroad. 

Pioneering GDPR-Compliant Digital Signatures for Europe 

sproof offers a future-proof solution to one of the most crucial aspects of digital transformation: legally binding, secure, and user-friendly electronic signatures. The platform enables companies and public institutions to sign documents online and across borders, fully aligned with the General Data Protection Regulation (GDPR). 

By integrating with a wide range of European eID services, sproof ensures high security, seamless user experiences, and complete compliance with European legal frameworks. The company is already trusted by prominent clients such as Kyocera, Energie AG, and the City of Mannersdorf, proving the robustness and value of its platform in real-world applications. 

Smart Financing for Smart Growth 

The recently secured aws loan is more than just capital—it’s a strong vote of confidence in sproof’s business model and vision. With up to 80% of the loan guaranteed by the Austrian state, the structure provides financial stability while freeing up operational energy for rapid expansion. 

“Our mission is to become the leading digital signature provider in Europe,” says Clemens Brunner, CEO and Co-Founder. “We combine privacy-first architecture with ease of use and strict compliance with European standards. That’s how we differentiate ourselves from global players and position sproof as a true European alternative.” 

Expanding in DACH, Preparing for Europe 

While the immediate focus remains on the DACH region, sproof is laying the groundwork for broader European expansion. According to Co-Founder Fabian Knirsch, the new funding will primarily be allocated to sales and marketing, accelerating customer acquisition and market penetration. 

“This loan gives us the flexibility to act quickly and scale efficiently,” Knirsch explains. “We’re not addressing a funding gap—we’re seizing an opportunity to grow faster, smarter, and in the right direction.” 

A Flagship Example of European Innovation 

At the European Super Angels Club, we are incredibly proud to support sproof on their journey. As a club dedicated to scaling European tech champions, we believe that sproof’s mission and execution represent the very best of what our continent has to offer: innovation with integrity, privacy by design, and growth with purpose. 

We warmly congratulate the entire sproof team on securing this important funding milestone and look forward to supporting their continued expansion across Europe.