Incredibly one legitimate use of blockchains right now would be as an append ledger of hashed text diffs submitted in real time as you draft something in order to prove that you actually spent time to write it. Proof of work. It's a proof of work. How is proof of work actually a thing I want to have.
Unfortunately, the prior scam tech tumor is too design pigeonholed for doing scams to support countermeasures against the current scam tech tumor.