If you plan on linking money to content, you better have a really definitive answer. That movement of money is essentially the purchase of a license. If a business or individual relies on your answer as to who that license should be purchased from, they do not want to be hit with a copyright complaint should the real owner appear. And if people end up abusing your system to monetize content that they should not, expect all sorts of legal docs in the mail.

Absolutely! Spotify's 30M settlement with NMPA is a great example of this kind of failure in existing systems