The dumbest thing about them in my haven't-been-bothered-to-so-much-as-search-for-them understanding (first and only really heard about them from Matt Levine's Money Stuff column) is that.. I can represent a painting or whatever as md5sum, sha256sum, anything else sum; take the photo again or compress it first?

Unless I really should read up on it because I'll be blown away, just seems like any uniqueness necessarily hinges entirely on hoe you choose to encode a thing, which is arbitrary, meaningless, and pointless?

But then, I haven't made any money from it, people have, what do I know.