Flanked by security guards clearing a path through paparazzi and news photographers, Sam Bankman-Fried stepped out of a black Suburban and into a Manhattan courthouse on Tuesday afternoon with a backpack over his shoulders and what looked like a wad of gum in his mouth. The 30-year-old former billionaire flew there to plead not guilty at his arraignment on eight criminal counts. The trial itself is not scheduled to begin until October, nearly a year after FTX, his cryptocurrency exchange, collapsed in what prosecutors have called “one of the biggest financial frauds in American history.” But it’s what prosecutors may dig up over the next nine months that has official Washington on tenterhooks.