except in some countries prohibit the existence of bitcoin
And if bitcoin users will be found in every country of the world. Then that's the start to call bitcoin as a global currency and most of us are coming from different countries and I guess this is enough to treat bitcoin as a global currency. And right now with the news that Japan is trying to adopt bitcoin which makes it another achievement for bitcoin.
Japan has already adopted bitcoin as a main currency and that is great step to make bitcoin even more popular and that has drawn attention of many other countries and we can expect that those countries will also start following Japan in coming time.
Yes, this is a very big step. For the bitcoin community is good news. Due to this, bitcoin becomes more popular. Trust is growing to him. So the price will go up. I hope that many countries will also take Bitcoin, and this will make it a global currency