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Yes, as in, anyone can start a star registry and charge people for an entry. It's all meaningless, so NFTs seem like a perfect fit.

I have here a piece of paper which states that I own this piece of paper.

Ironically the fact that you've written on that paper your ownership information actually makes said paper worth less than if you hadn't.

That depends on who they are. Famous enough and the ownership claim can increase the value…