Unfortunately one Gets by the app, otherwise apps would need to register their chunk names etc. However, Pay the Producer does introduce paying the up loader of content (so app builders included)
The current thinking though is PtP is good but may have issues. Again though delaying the implementation (very simple) of PtP for 12-18 months may allow all older data to be uploaded without payment. Then it’s much more likely clean data is being uploaded and via web sites and artist sites especially people can know the actual artist and get their art from their (art includes apps I see, maybe all digital info == art, in any case the network will think it is).