Is there an "official" or at least "proposed" openEHR ecore model? It
seems to be stated in the GitHub description but I haven't been able
to find it there.
I have found one openEHR ecore model in another repository, but I
don't know who created it or it correctness.
Good question. There is not, but if this is a candidate starting point, and if it is in current ecore format (I don't know much about the format, pity it's XML - otherwise we could read it), it could be a starting point for a publishable ecore model. I'll get Seref to have a look at it, but any other information people have on this question would be useful.