They are not allowing citizens to use Bitcoin- only importers and exporters. This is probably Putin seeking to reduce dependence upon Chinese shadow banking which has come to route a lot of Russian international trade payments. Putin has made Russia a subservient tribute state to Chinese energy imports and manufactured goods exports. Again it is China that is leading the increasingly direct challenge to US hegemony via its growing alliance of autocratic militaristic associates...because China has already won the trade war and USA cannot seriously put sanctions on China or it would suffer immense damage to the remnants of US military industrial capacity. Not to mention China now being a crucial member of the IMFs board of reserve currency issuers...the only one that is not a military and monetary tribute state to USA.