Bro it's very clear that cryptocurrency have gain ground all over the world because of its advertisement and how influential in terms of services via investment and transactions purposes, i can equally says that it's also a helping hands to accumulate a financial capability if handled with a determination, but the aspect of becoming a global currency, i think it will take year's or century if really it's existence will be up to that before it will become a global currency, really no country that will like to abandone their fiat currency and adopt exchanges with cryptocurrencies, it's obvious that many countries never legalize the adoption of cryptocurrency especially bitcoin fully in her countries.