You are welcome!
Typically, within the existing entertainment industry, copyrighted material may be actively used without seeking authorisation - but the profits from that material may be held back by the publisher (not spent) in case of a claim being made and there being a need to renumerate the copyright holder later on.
In that same spirit, it would probably be seen as ok if there was no ability added to edit the blockchain, provided an agreed upon process was in place to allow copyright holders a window to stake their claim. The fingerprinting technology that is already in use by Youtube and others appears to be as close to an agreed upon industry standard as we are likely to see.