Crypto's excruciating week has traders bracing for the next crisis

It was one of the most dramatic weeks in the short history of the cryptocurrency market, bookended by the type of announcements investors fear the most from a counterparty: We’re sorry, but we just can’t return your money right now.

In between, a nascent technocratic industry with grand ambitions to reinvent the financial system was rocked repeatedly by echoes of past crises in the old system. It was a week of margin calls, forced selling and important collateral being exposed as way too illiquid in a time of crisis. There were rumblings of hedge-fund blowups, tales of opportunistic predatory trading, job