As bitcoin’s price passes $10,000, its rise seems unstoppable

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MOST money these days is electronic—a series of ones and zeros on a computer. So it is rather neat that bitcoin, a privately created electronic currency, has lurched from $1,000 to above $10,000 this year (see chart), an epic journey to add an extra zero.

On the way, the currency has been controversial. Jamie Dimon, the boss of JPMorgan Chase, has called it a fraud. Nouriel Roubini, an economist, plumped for “gigantic speculative bubble”. Ordinary investors are being tempted into bitcoin by its rapid rise—a phenomenon dubbed FOMO (fear of missing out). Both the Chicago Mercantile Exchange, America’s largest futures market, and the NASDAQ stock exchange have seemingly added their imprimaturs by planning to offer bitcoin-futures contracts.

It is easy to muddle two separate issues. One is whether the “blockchain” technology that underpins bitcoin becomes more widely adopted. Blockchains, distributed ledgers that record transactions securely, may prove very useful in some…

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