At PIDapalooza 2018
I discussed with a few people - not Wikidatans - how to document Persistent (or Unique) Identifiers.
As an example, I created 'KoreaMed Unique Identifier':
https://www.wikidata.org/wiki/Q47489994
How could we improve that? What additional properties might we need? What properties already exist, that we could make use of?
Also, this query:
returns over 5000 instances/ subclasses of "unique identifier" (Q6545185) but includes both /types/ of identifiers (like the example above) and individual identifier values, like ".ar" as an internet TLD (domain name itself - Q32635 - is a subclass, not an instance, of UID) - how should we distinguish between the two classes?