The global cryptocurrency industry is searching for the trader who made massive gains betting against bitcoin and ether, as the sector grapples with the aftermath of a market rout that wiped out US$19 billion last week.While the crash on Friday liquidated more than 1.6 million traders within just 24 hours, some investors had profited handsomely – including one trader who earned nearly US$200 million from short positions on bitcoin and ether, according to blockchain analytics firm Arkham.Those...