FTX creditors got paid back 119 cents on the dollar and still lost most of their money. A bankruptcy rule from 1978 decided who captured the difference, and the answer was Mubadala and Jane Street. When a company enters Chapter 11, Section 502(b) of the bankruptcy code converts every claim into dollars at petition-date prices. FTX filed on November 11, 2022, with Bitcoin around $16,000. If you had 1 BTC on the exchange, your claim became $16,000 forever, regardless of what Bitcoin did…