For me, Bitcoin is already accepted as a legitimate currency because its users can obtain goods and services through it, and every time there are more businesses enterprises that accept it as a payment method. The legality of bitcoin depends mainly on the user and that is where the political barriers are, which have the need to know who are the owners of these cryptocurrencies, where they are in the world and for what they use them in order to maintain control over the use of currency in illegal activities such as money laundering.