Fascinating topic. It seems like for future new content the blockchain is such an obvious way to prove ow worship it has to happen. The interesting question is what if you change it a little. I think this vid angel is fighting an interesting legal a battle along these lines. They say if you change the movie in their case you can stream it. https://steemit.com/copyright/@dennygalindo/vidangel-interesting-service-pushing-back-on-copyright