still no country has approved Bitcoin ??
it is legal here in my country, Indonesia. yes, it's approved by the government.
however, it was approved as a commodity. it's regulated and legal to trade bitcoin here.
just like any other country.
but, if you mean bitcoin as a medium of payment, it's strictly forbidden here.
but since it decentralized and has a strong privacy point, people still used it as a medium of payment illegally, OTC.
I believe it happens in other countries as well.