If most of the losses are USDT, how do we know Tether didn't just print them out of thin air to lend to FTX / Alameda as their "Commercial Paper"? That would b

If most of the losses are USDT, how do we know Tether didn't just print them out of thin air to lend to FTX / Alameda as their "Commercial Paper"? That would be my first guess.