Eventually all governments in the world will recognize bitcoin as an official and bonafide global currency. But as of now, due to its unstable nature and high volstility rate, not even its developers could be able to recognizezit as an official currency that can be used in daily transactions. Time will come when bitcoin would be stable, and we wouldn't have to worry about bitcoin not being declared as a currency. With the continuous innovation provided by the blockchain technology there's no doubt it will someday improve bitcoin's stability.