The history of cryptocurrencies has rarely been dull, but the slump of 2022 has been a wilder ride than most. Billions of dollars in holdings have been disappearing almost overnight in a series of business collapses, most notably the evaporation of the FTX crypto exchange in November. Each left in its wake a wave of related bankruptcies. The events have eroded trust in a field that was itself created in response to a loss of faith in mainstream finance following the 2008 banking crash. Some inve