Technically I don't how that could be made possible. currency of a nation is tied up to the state of economy, natural resources, political stability and things like that. if based on crypto concept where everyone could mine and own a portion or a share of a country, what would that mean? If a country is at civil war or experiencing trade deficit or in a state whereby the natural resources have completely depleted, would that value get reflected in the crypto coin??? Certain concept of distribution has to be worked out but definitely not POW