> A regular log or ledger file could accomplish the same thing as a blockchain

It is kind of wild how a bunch of people hyping blockchains five years ago has resulted in a thermostatic reaction where a bunch of other people have decided that distributed computing is easy, actually, you just need a ledger file.

You do understand that a blockchain is just a hashed ledger? It's called "crypto" because they use cryptography principles to hash the ledger into multiple parts.

But it's still just a ledger.

With blockchain, you just get a ledger that's harder to use and dependent on external connectivity.