Can Bitcoin ever be use as other country currency and it will still maintain it decentralized digital currency?
Bitcoin can definitely be used as a currency in nations, to put it rightly, bitcoin is already in use in several parts of the world to pay for services, pay for goods on msme platforms and lots more. Even vpn platforms accept bitcoin as a means of payment too.
What I doubt is a country adopting it as an official currency. Nations will prefer to have their own centralized token.