Blockchain tech _is_ useful though, but mostly not to consumers unless they're trying to circumvent the law.
Private blockchains between semi-trusted entities that need to keep accounts between them are great. It really is just a shared ledger, a shared database with the mechanics for keeping accounts in a way that's mathematically trusted so no one party has to own the ledger. This is good for banks settling accounts between each other which they very have to do nightly for a variety of reasons.
Private blockchains between semi-trusted entities that need to keep accounts between them are great. It really is just a shared ledger, a shared database with the mechanics for keeping accounts in a way that's mathematically trusted so no one party has to own the ledger. This is good for banks settling accounts between each other which they very have to do nightly for a variety of reasons.