I'm wondering if there is a way (SQL, api, tool or otherwise) for finding out how often a particular source is used on Wikidata.
The background is a collaboration with two GLAMs where we have used ther open (and CC0) datasets to add and/or source statements on Wikidata for items on which they can be considered an authority. Now I figured it would be nice to give them back a number for just how big the impact was.
While I can find out how many items should be affected I couldn't find an easy way, short of analysing each of these, for how many statements were affected.
Any suggestions would be welcome.