But no. Georgia is allowing an American company mine Bitcoin at scale. It uses a lot of power and a lot of infrastructure. But isn't a huge bet or anything interesting.
I mean, fundamentally the issue is that the rise in digital payments puts most of the money supply in bank ledgers... if the money supply was on a public ledger, individuals could still deposit it with a bank, but they could also send it peer-to-peer if they so chose.
In general though, I think it would be an interesting experiment if individuals can hold central bank money directly instead of going through commercial banks.
But I agree... that experiment would be quite fascinating. It might not even be that big of a change... most people would probably continue to entrust a bank with their funds, and banks could potentially continue to operate a fractional reserve system.
Why not just issue dollars?