Digital Money IMF chief Christine Lagarde wants to see central banks seriously consider issuing digital currency, as central banks in Sweden, China, Canada and Uruguay are already debating. Why? "Your payment would be immediate, safe, cheap and potentially semi-anonymous... And central banks would retain a sure footing in payments," Lagarde said at a Singapore conference. BBC
The possibility of legalizing cryptocurrency is very vague. I think that this will not happen soon. Unfortunately, not everyone thinks like a Lagard
Since most digital currencies are not backed by any central government, each country has different standards. But it is been considered seriously whether to ban or not to, but the argument against banning it is high.