The executive tapped to lead FTX through the biggest cryptocurrency bankruptcy in history has helped recover billions of dollars for creditors of Enron, Nortel Networks and other major companies that have collapsed over the past two decades.

John J Ray III was appointed chief executive of FTX just before the crypto exchange plunged into chapter 11 bankruptcy and founder Sam Bankman-Fried resigned. Ray is now tasked with investigating FTX’s sudden collapse and unwinding an enterprise with more than 130 corporate affiliates in chapter 11, more than 100,000 estimated creditors and at least $10bn listed in assets and liabilities.