It was in 2016 so I mercifully forgot the details, it's a set of standards for data archival and document classification. There are some compliances rules for s

It was in 2016 so I mercifully forgot the details, it's a set of standards for data archival and document classification. There are some compliances rules for security in the mix (people should require proper authorisations to access documents, etc). At some point some lawmakers (under the influence of some company such as Cap Gemini or Atos) passed a law to force notaries to use only software with that particular stamp. The problem is that it's typically the sort of standard that should be applied to a particular organisation and workflow, through an auditing process, instead of a global, upfront stamp that is really a way to do gatekeeping, not actually enforcing data safety and security.