> Again, this is where "branding" comes in. Once people know which smart-contract is the real one, putting another transaction won't work.
I'm sorry, but isn't this exactly the problem you pointed out with luxury goods in your own article? It's all about authenticity and provenance ("the real one"); you've just offloaded the proof from physical quality (which I or anybody else who's sufficiently informed can assess) to a proof of work or some other scheme without solving the actual problem (the bootstrapping of trust).
