At the early stages Russia ruled it as illegal, China outlawed all withdrawals and some other country also spoke against it. But now everything seem to be smoothing up at least on the government side. Surely Bitcoin must be seen as challenging their authority. Is there something I am failing to see? All it would take is a 51% attack or a new law.
Bitcoin is unstoppable because had in being government should have there way they wouldn't have allowed Bitcoin and crypto currency in general to remain till this time. Dispite the fact that they have tried all the try all they could but to know avail.