This could be interesting. Value is assigned by people, so the fact the credentials for a given work reside somewhere else with 'less legitimacy' would mean yes

This could be interesting. Value is assigned by people, so the fact the credentials for a given work reside somewhere else with 'less legitimacy' would mean yes - you could copy it. However this other chain would be entirely illiquid. But...the interesting part. What happens when cross-chain asset movement is much simplified? I don't see there being any issue with legitimacy (original owners could still verify ownership, you couldn't). But if you flooded original chain with fakes, uh... Talked myself out of it. nevermind