The US gov as well as most others would not want the records of money movements that would be recorded even in a centralized blockchain. This would create problems under a future administration. Also the funding of black ops would leave trails that most would not want. However in a centralized approach I guess you can do what you want. This is likely why the Pentagon has lost track of 35 trillion. source

I see many forks in the road on where this goes. But a total reset of the financial system is likely. As I note often, you only need to get the people to want it, similar to the method used on the movie The Hunt for Red October . And when people have not earned pay in 12 weeks and their 401k has dropped 88%, the people will want it.

The current financial system was created after a train ride to Georgia, I am curious who and where the next financial system will be spawned, as well as who will write that book.

Cheers