It all started with a watch

Health data forms the foundation for sound decision-making, connected care, and responsible innovation. To realize its full value, it must remain trustworthy, interoperable, and sustainable throughout its entire lifecycle. This is precisely what XQT stands for—the DMI GROUP’s brand for data sovereignty.

As part of the DMI GROUP, timeproof contributes its expertise to the XQT brand’s solution portfolio.

As the DMI GROUP’s trust technology specialist, timeproof provides the technological foundation for digital integrity, traceability, and long-term preservation of evidential value, forming a key component of XQT’s TRUST layer.

Together with DMI, Health-Comm, gefyra, and the XQT Innovation Members, XQT combines proven expertise into a robust, comprehensive offering—for secure processes, well-informed decisions, and a sustainable healthcare system.

timeproof has evolved from a provider of highly specialized timestamping technology into a leading full-service provider of evidence-preserving archiving solutions.

Using in-house developments such as eRecApp, we process even massive amounts of data efficiently and in compliance with legal requirements.

By consistently adhering to the strictest standards, such as BSI TR-ESOR, we offer maximum future-proofing for your critical informatio

Today, timeproof is part of the DMI GROUP and helps companies in industry, healthcare, and the public sector keep their digital information trustworthy, traceable, and legally compliant. The core concept has remained the same for more than 25 years: building trust in digital data—not for days or months, but for decades.

NIS2 and DORA place greater emphasis on the availability, authenticity, and integrity of digital information. For regulated organizations, this also raises the critical question of how the authenticity of business-critical information can be verified in a traceable manner over the long term.  In this interview, Managing Director Olaf Feller and Christoph Schmelter, Managing Partner of the DMI Group—to which timeproof belongs—explain why integrity assurance plays a key role in this context and what the change in ownership means for the future of timeproof GmbH.

Olaf Feller: “NIS2 and DORA significantly raise the bar for traceability, IT resilience, and governance. It’s not just about keeping data available. Organizations must also be able to protect the integrity and authenticity of their data and ensure it is traceable. Especially after a cyberattack, a crucial question arises: Which data can we still trust? This is exactly where timeproof comes in. We provide technical evidence that relevant information has remained unchanged—or that any changes can be reliably identified.”

Olaf Feller: “We ensure the integrity of digital information over long periods of time. To do this, we combine qualified timestamps, cryptographic evidence records, and BSI-certified procedures for preserving the evidential value of data. This provides companies with technically robust proof of the integrity of their data—whether for regulatory inspections, internal audits, or the investigation of a cyber incident. In doing so, we address a key component of a NIS2- and DORA-compliant security and resilience strategy.”

Olaf Feller: “Our particular strength lies in our modular approach. Qualified timestamps, RFC-4998-based evidence records, and our BSI-certified TR-ESOR solution, RECORDPROOF, can be used individually. However, their true strength lies in how they work together: We can ensure the integrity of information from its creation through its processing to the long-term preservation of its evidential value. This results in a seamless integrity pipeline. Companies therefore do not have to piece together disparate standalone solutions to form a chain of evidence, but can build it from a single source.”

Christoph Schmelter:  “Timeproof addresses a key issue in the digital transformation. With NIS2 and DORA, digital integrity has evolved from a niche IT topic to a matter for the executive board. At the same time, virtually every other aspect of digitalization—including AI—relies on the origin and integrity of data remaining reliably traceable. This is precisely why timeproof is a strategic excellent fit for the DMI Group. Our mission is to provide infrastructure for trustworthy data that can be used with confidence. timeproof brings to the table an outstanding technological foundation, BSI-certified processes, and deep cryptographic expertise. We want to further develop this potential together and scale it beyond the healthcare sector.”

Kurz gesagt: Was müssen sich Kunden und Partner merken? 

Christoph Schmelter: “Digital resilience requires trustworthy data. timeproof provides a crucial building block for this: the verifiable integrity of digital information. With qualified timestamps, cryptographic evidence preservation, and BSI-certified TR-ESOR technology, a seamless integrity pipeline is created—modular, scalable, and from a single source. “In this way, timeproof consistently complements our mission at the DMI Group: not only to make data available, but also to ensure its trustworthiness and sovereign usability in the long term.”

Health data forms the foundation for sound decision-making, connected care, and responsible innovation. To realize its full value, it must remain trustworthy, interoperable, and sustainable throughout its entire lifecycle. This is precisely what XQT stands for—the DMI GROUP’s brand for data sovereignty. As part of the DMI GROUP, timeproof contributes its expertise to the XQT brand’s solution portfolio. Together with DMI, Health-Comm, gefyra, and the XQT Innovation Members, it combines proven expertise into a strong, comprehensive offering—for secure processes, well-informed decisions, and a future-proof healthcare system.