Don't know how many Africans involved in bitcoin revolution, getting close would help create solutions using blockchain and cryptocurrency
There are many Africans that are involved in Bitcoin, I am an African from Nigeria and I have been doing some met up lately with other Bitcoin Enthusiasts in the country.
Infact, there is a large community of Nigerians and Africans on Steemit.com. Many Africans are waking up to the possibilities and opportunities that are attached to Bitcoin