South Korean national and 337 others arrested and charged worldwide in the takedown of Welcome To Video, the largest darknet child pornography website
As mentioned, the operator was identified and located through tracking Bitcoin transactions. There's some more info about this aspect on the Chainalysis blog: https://blog.chainalysis.com/reports/chainalysis-doj-welcome-to-video-shutdown
Those are staggering numbers. Absolutely crazy.
Given the number of videos/pictures/users of the site, how many people are involved in this? I'm not sure if I want to know the answer. But I keep seeing figures way higher than I'd expect.
For as much shit as people give it, the IRS is one badass agency.