It's turtles all the way down, right?
None of my proposed use cases rely on PoW, bitcoin.
Perhaps I should have said it more clearly: I'm not interested in currency et al, because best as I can tell, bitcoin is just a better escrow, or worse a collectable (like baseball cards). And those things don't interest me.
--
Have you done accounting, bookkeeping, auditing? Another way to think about blockchains is an interoperable ledger. If your data doesn't leave your org, you can just using tamper evident logs (rolling hashes), no consensus stuff required.
I worked on election integrity issues for a decade. I'm the biggest technoskeptic. I pretty much oppose all things new until they're battle proven.
The biggest challenge for election administration is verifying and publishing the physical chain of custody of all the gear and materials. And no matter how hard you try, there's always some yahoos (flat earther types) that will demand ever greater proof.
Whaddya gonna do?
Well, based on my experience, applying some blockchain technologies to document and publish chain of custody would simplify A LOT of the public accountability and transparency issues.
At the end of the day, it's just double ledger accounting. Debits match credits. The parts of blockchain that interest me make it easier to "show your work".