It's not explained well but this allows you to own the "original" photo/painting/document, etc. in a provable way. An artist could offer a limited edition digit

It's not explained well but this allows you to own the "original" photo/painting/document, etc. in a provable way. An artist could offer a limited edition digital "print" and you could collect it, exhibit it and resell it because your ownership is certifiably authentic. If you don't think that's valuable, consider the value that humans put on first edition books, signed original works, ownership of exclusive editions, etc. Everyone can own a copy of "To Kill a Mockingbird" or "Dune" for a few dollars but signed, first editions goes for thousands of dollars.