Digital trading platforms mean the age of dollar hegemony is coming to an end

Since 1971 the US dollar has not been linked to gold and yet remains what is has been since 1944, the world's reserve currency. 

This means the USA can print money and doesn't need to borrow it. 

Confiscating the Russian and Afghan foreign reserves and other measures taken against Russia suggest 'de-dollarisation' is likely but, interestingly, the era of dollar hegemony was anyway moving peacefully to its close, not because of China but because in the digital era it is much easier and much cheaper to trade less well-known currencies, such as those of Canada, Australia, Norway, Sweden, South Korea and Singapore than it was. This FT article explains.