The pound was an international currency in 1930 because it was pegged to gold, but it couldn't play well and announced the unpegging.

After 1945, the US dollar became the international currency because it was anchored to gold, but later it could not be played and announced that it would no longer be anchored.

So, who will be the next global currency? Definitely not pretending to anchor gold, either directly using gold as the global currency, or anchoring something else reliable, Computing Power? BTC anchors Computing Power.