Bitcoin and its rivals offer no shelter from the storm

THE “biggest bubble in human history comes down crashing,” tweeted Nouriel Roubini, an economist, gleefully. After an exhilarating ride skywards in 2017, investors in crypto-currencies have been rudely reminded that prices can plunge earthwards, too. In mid-December the price of bitcoin was just shy of $20,000; by February 6th, it had fallen to $6,000, before recovering a little (see chart).

And bitcoin is not the only digital currency to have fallen. Figures from CoinMarketCap, a website, show that the total market capitalisation of crypto-currencies has fallen by more than half this year, to under $400bn. This slide has taken place amid a flurry of hacks, fraud allegations and a growing regulatory backlash.

Perhaps the most damaging allegations surround Tether, a company that issues a virtual currency of the same name. Tether allows users to move money across exchanges and crypto-currencies without converting it back into “fiat” (central-bank-backed) money first. In theory, each…Continue reading

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