You are right, the blockchain will be able to handle all of that.
At some point, the nation-state concept is going to die. We will see governments, for the most part, eliminated and the blockchain handle all "management" via smart contracts.
Crypto is the first app of many that will change the face of this world. It is the first, and probably the most important since it deals with the enslaving force, the currency. Like you said, once that stranglehold is broken, we are going to see a great deal of other things emerge quickly. It might take a while to render the banking system impotent but it will happen.
I have reason to believe that Trump might try to put the US Treasury into a chapter 11 before the end of his term to try to get a better bargain with the Fed. It's based upon an analysis of zodiacal aphesis (a Hellenistic era astrological procedure). I wrote a special program starting some 20 years ago to handle this because nobody else would do it.
I don't really believe in astrology because the efficient causes are really something else, but life isn't random either which means that patterns can be observed. I use a process of logical extrapolation by mapping events from previous periods and looking for repetitions and he's filed bankruptcies in previous L3 Cap periods. He enters a new one that lasts for 8 years starting at the end of this month. The analysis leads me to believe that between 2018 - 2026 will be the greatest shift in world governing power.