To move forward, we require a clear decision on what the concept URI of EntitySchemas is going to look like exactly.

As I understand it, the remaining open question is about the prefix (http vs https). See T331356 for some related debate and also considerations of the German National Library on topic: https://wiki.dnb.de/display/DINIAGKIM/HTTP+vs.+HTTPS+in+resource+identification .
Further, that decision should probably briefly restate the core argument(s) for choosing the /entity/ path.

Acceptance Criteria:

• The decision about the precise format is made
• The decision, including the main arguments, is publicly documented somewhere that is suitable for linking