CEN/TS 18264:2026

This document defines the policy, functional and security requirements on (qualified) trust services for electronic ledger. This includes requirements to ensure:
-  their provision by one or more trust service providers;
-  the establishment of the origin of data records in the ledger;
-  the unique sequential chronological ordering of data records in the ledger;
-  the recording of data in such a way that any subsequent change to the data is immediately detectable, ensuring their integrity over time.