The epic collapse of wunderkind Sam Bankman-Fried’s $32bn (£27bn) crypto empire, FTX, looks set to go down as one of the great financial debacles of all time. With a storyline full of celebrities, politicians, sex and drugs, the future looks bright for producers of feature films and documentaries. But, to paraphrase Mark Twain, rumours of the death of crypto itself have been much exaggerated. True, the loss of confidence in “exchanges” such as FTX – essentially crypto financial intermediaries – almost surely means a sustained steep drop in prices for the underlying assets. The vast majority of bitcoin transactions are...