Information managers and other stakeholders can rely on a framework of various international certification standards for digital repositories in order to assess and improve the quality of their work processes and management systems. ‘Trustworthy Digital Repository’ (TDR) is a term often used in this respect.
Three certification instruments, with increasing degrees of complexity and depth, are available:
- Data Seal of Approval (DSA);
- nestorSeal (verification according to DIN 31644); and
- ISO 16363 certification.
The assessments vary in intensity from a peer review of completed documentation (self-assessment) in the case of DSA to a prepared on-site visit by an external audit team in the case of ISO. These instruments are mainly used in Europe. Outside Europe, many archives receive International Council for Science - World Data System (ICSU-WDS) certification, which is similar to DSA certification. Data sponsors, producers and re-users may trust any managing body that has been certified according to one of the above standards.
DANS received certificates of: