>To be explicit, the reason blockchains exist is to have a globally consistent database that doesn’t require trusting the operator.
which I mean when I think of that I think - that would be really useful for crime because you don't want to trust the operator because either 1. they're a narc 2. they're a criminal.
it's also useful for currency because not trusting the operator allows you to keep them from turning into paypal.
but then I just draw a blank on what it is useful for after that.
I'll be honest, I find the "blockchain is for crime" argument to be worn out in 2022. It feels a lot like "think of the children".
Of course blockchains can be used for crime, almost anything can. In fact, if you want the preferred currency of criminals the world over, look no further than the US Dollar.
Most organizations, governments, businesses, etc. start with plenty of trust to go around. There's no reason to inherently distrust them, so their governance, currencies, securities, etc. work just fine. Distrust breeds over time, which is why establishing governance, currencies, securities, etc. in a way that can be cryptographically verified by anyone is a useful property to have to ensure the system remains generally trustworthy long into the future.
For example, there are many reasons to distrust stock brokers, the Depository Trust Company, the spineless SEC, and other entities who run our securities exchange. If securities were traded on a blockchain instead of an opaque database that can't be audited except by a corrupt few, everyone could strongly trust in the freedom and fairness of the securities exchange markets.
If I could own all my stocks on the blockchain, I would do it in heartbeat.
To be explicit, the reason blockchains exist is to have a globally consistent database that doesn’t require trusting the operator.