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Many countries have struggled to obtain this digital currency. Bolivia, Thailand, Vietnam and Bangladesh, for example, are all trying to obtain Bitcoin. Even more advanced countries such as Russia, Japan, Australia and Venezuela have attempted to legally sell Bitcoin. But it is interesting to note that some countries, such as India and the United States, have not yet taken action in this regard and have not yet defined an official policy on such currencies.
I was confused reading your statement about
obtaining the currency 
. Some countries tries to restrict the front end exchange by restricting the central bank to trade with cryptocurrency exchanges and business ventures or outright ban them. All they can do is to disrupt and nothing more.
Countries like India took action against cryptocurrency exchanges through the central bank and the community fought against that in Supreme court and won the case and that is how these exchanges started operating again.
Unlike POS coins that are run in a limited number of nodes,
BTCitcoin is decentralized.