FTX, one of the world’s largest exchanges, is run by Sam Bankman-Fried and is headquartered in the Bahamas. It has spent millions of dollars lobbying American legislators to institute crypto-friendly regulation. FTX has a native cryptocurrency token called FTT, which traders use for operations like paying transaction fees. Last year, Mr. Zhao sold his stake in FTX back to Mr. Bankman-Fried, who paid for it partially with FTT tokens. On Nov. 2, the crypto publication CoinDesk reported on a lea...