Does anyone know how to retrieve the very first diff of a wikibase-item (Wikidata item) using action=compare, i.e. the diff of the item creation? fromrev=0 does not work, and I don’t manage to find a way with fromtext (and fromcontentmodel and fromcontentformat; non-functional example: ).
Topic on API talk:Compare
My question was answered here at Wikidata, in case anyone is interested.