THE pattern is familiar. Computer geeks develop technology that threatens to overturn established markets and habits. Regulators then scramble to understand and tame the beast. This is what is happening in the financial world in the wake of an explosion of crypto-currencies. Over the past year the pool of virtual currencies has both deepened, from $30bn to $400bn, and widened, with the spread of “initial coin offerings” (ICOs, a form of fundraising in which investors in young companies are issued with virtual tokens). Hedge funds, students and pensioners have all been caught up in the crypto craze.
This worries authorities, because the crypto-sphere is far from risk-free. Valuations can leap and plunge: after a giddy rise, between December and February the price of bitcoin dropped from nearly $20,000 to less than $7,000. (It is now around $9,000.) Several ICOs have turned out to be scams. Legitimate tokens are in danger of being stolen. Some crypto-currency exchanges have been hacked.