[yellowapple]

> 19 states have electronic titling without a blockchain.

Which means 19 states have their own databases, and exchanging data between them entails 19! (at minimum) separate ad-hoc connections doing a bunch of ETL work to massage between subtly-different database implementations.

> As long as you have a central authority

And who is that central authority? Nevada is not a central authority over Wyoming.

The federal government could be that authority, but that just kicks the can down the road; the US (despite its best efforts) is not a central authority over Canada or Mexico or wherever else. Do we have the UN establish a global DMV?

A distributed ledger sidesteps all this. Wyoming and Sweden don't have to trust each other and/or some third party when they can just post their records to the same chain.