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Β 7 years agoΒ (edited)Β 

That might work for newly taken photos that are never published until after they have been submitted to and approved by the blockchain.

But the moment the system starts, it will be flooded with claims for existing works by people that don't actually own them.

Edit:typo

That is true.
It will be impossible to identify the owners, Unless there is a way for people to prove their Existing works.