~snip~
Japan today is using cryptocurrency in their own country because they really know that it was very profitable and it can improve their own economy.
Thats it,japan the most technological country in the world adapts easily the blockchain since they know that this is the future currency for technology
if the Japanese government can prove that blockchain technology can develop its country, I think in the future there will be more and more countries that follow because Japan is one of the big countries that has influence and is the concern of other countries.