I just want to respond to your view of a poor country that prohibits the use of bitcoin,
I think the legality and ban of bitcoin isn't dependent on economic status of the country, but of course it depends on their government policy in making regulations about circulation of digital currency, because in fact many developed countries in Europe are banning the use of bitcoin
and I think bitcoin in your country is legally functional but not for its legality, because if the bitcoin legality in your country is legal, there will be government regulations regarding rights and obligations of bitcoin users.