Availability of the 1st standard in the harmonised EU Standard series on Trusted Data Transactions
IT'S OFFICIAL - March 25 2026, the CEN and CENELEC officially made available the first standard in the harmonised European Standard (hEN) series on Trusted Data Transactions —EN 18235-1:2026, requested by the European Commission as part of Mandate M/614 - European Trusted Data Framework.
A major milestone for trust, traceability and interoperability within and across data ecosystems.
-
Part 1: Terminology, concepts and mechanisms establishes the shared foundational language for trusted data exchanges across Europe — and a reference point for international standardization efforts.
This publication is the result of 3 years of collaborative work involving standardization experts, research organizations, industry leaders, and public institutions under the umbrella of CEN/CENELEC.
It is a direct output of the pre-standardization work initiated in 2023 by Dawex, co-proposed with Fraunhofer ISST and TNO, which laid the conceptual groundwork now embedded in this standard.With EN 18235-1 published, in advance of the deadline set by the European Commission in its standardisation request, the roadmap to the full TDT harmonised standard series is firmly on track:
-
Part 2 – Trustworthiness requirements: Deadline November 1, 2026
-
Part 3 – Interoperability requirements: Deadline May 1, 2027
Those standards are more than technical documents. They are powerful enablers for innovation, interoperability, traceability and data-driven business outcomes. A common language for trusted data transactions reduces legal uncertainty, accelerates participants onboarding in Data Ecosystems, and creates the foundation for scalable, cross-border and cross-industry Data Exchanges.
For organizations building and operating data spaces, and data providers seeking to exchange data with trust — these standards provide the common reference needed to ensure compliance, interoperability, and trust at scale, in line with the EU Data Act and the broader European Trusted Data Framework.
Congratulations to a dedicated broad community: the national experts of CEN/CLC JTC 25 WG2, and the organizations that contributed to the pre-standardization groundwork, including European Commission, Gaia-X, BDVA, IDSA, Fiware Foundation, iSHARE, Microsoft, Airbus, EDF, Hub One, Prometheus-X, Data Spaces Support Center (DSSC), SQS and Connekt, and many more, whose foundational work paved the way. A collective achievement.
Access the details on Trusted Data Transactions Standard Part 1: Terminology, concepts and mechanisms —EN 18235-1:2026
Learn more — Trusted Data Transaction website
Read our blog on the initiatives and the impacts of JTC25 & Trusted Data Transaction standardization
Want to learn more about the benefits of Data Exchange? Subscribe to Dawex newsletter here.
