yes of course IMF will be accept it and they will start a digital banking system we know that bitcoin is doing well and it is all over accepted in every field so soonly it will be accepted as a currency the fiat money is not gonna work anymore bitcoin is totally gonna through it out from the earth so IMF have probably to accept it.
When I think about currency the things that come to my mind is cryptocurrency which is becoming popular as time passes by. And the best cryptocurrency for me so far and for a lot of people is of course the bitcoin. It is the first thing that comes into my mind when talking about crypto.