EVERY market mania reaches a point when pitches to would-be investors enter the realm of the surreal. So it goes for “initial coin offerings”, or ICOs. A new one by a firm called POW invites Facebook users to claim tokens for nothing; when they later become convertible into other tokens, the first to take advantage of the offer could “become worth $124bn…making them the richest person on Earth”, the blurb says. Not a bad return for no money invested and no risk borne. However bizarre, bubbles are hard to resist: no one wants to be the only one of their friends left out. They can also be financially ruinous. But gambling on a craze, even a highly dubious one, can be about more than blind greed.

The ICO boom is an outgrowth of the emerging, occasionally inscrutable world of cryptocurrencies. These are a form of money (bitcoin and ether are examples) used in transactions which are recorded on a distributed public ledger called a blockchain. An ICO is a scheme to raise funds for an...Continue reading