China has shown interest in creating a gold backed digital currency. Given their economic dominance, they may be the best suited of all countrys to get this accepted as a world reserve currency. America has the largest gold reserves in the world 'officially', but in reality, their reserves are alot smaller. Many of the gold bars in Fort Knox are fake. And at any rate, Americas debt eclipses that of any other nation, and that gold will be needed for repayments. This leaves China as the country best placed to put their currency into the world stage.