 And that meant that he was able to take down, like, epic dark markets, things like AlphaBay and Silk Road, and he helped roll up dirty cops. And then when he left the IRS a few years ago to join Binance, he was basically doing the same thing for that company. He was working with international investigators to try to teach them how to do what it is that he had figured out to do, which is basically follow these cryptocurrency transactions.