> What is a situation where someone is going to say "let's use a blockchain solution instead of just replicating a traditional db across several data centers."

> What is a situation where someone is going to say "let's use a blockchain solution instead of just replicating a traditional db across several data centers." I think the difference is that putting it on the blockchain guarantees that it is immutable after it's been committed while db-across-data-centers requires you to trust the company hosting the data not to tamper with the data. So for an (admittedly contrived) example a company could store contracts they signed with other companies on the blockchain, whereas if they placed it on a data center both signatories would need to trust the data center.