The dollar won’t disappear, of course—it’s held in vast reserves around the world and used to price everything from computers to steel. But every fiat currency now faces more competition from cryptos or stablecoins. And stablecoins in widespread use could upend the markets since they aren’t backstopped by a government’s assets; a hack or collapse of a stablecoin could send shock waves as people and businesses clamor for their money back, sparking a bank run or financial panic. And since they’re issued by banks or other private entities, they pose credit and collateral risks.
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