In Russia, the Crypto-currency is not developed. And I do not think that this idea will be realized. It seems to me that these are just rumors. For me, the national currency is a very bad idea. Crypto currency should be decentralized
I have the same opinion on this one. National crypto wouldn't be different than national currency, i mean, only difference will be it is crypto, not paper money.
Whoever is going to use it should be prepared for taxes and lots of proving from where did that crypto came from.