Japan have done so well as far as cryptocurrency is concern! They legalised bitcoin earlier on showing the world that bitcoin can be used as store of value and currency!
I don't agree with you. Nobody in the world even the Japanese did not recognize the bitcoin currency. For bitcoin established as a means of payment but it is quite another. I think that people are exaggerating the achievements of Japan. They were among the first to receive the income from the use of bitcoins instead of spending time on ineffective methods of dealing with bitcoins.