Giant Child Porn Site Is Busted as U.S. Follows Bitcoin Trail

U.S. and Korean authorities say they broke up one of the world’s largest markets for child pornography, a crime that is proliferating at a furious pace with the rise of cryptocurrency and encrypted online content.

The bust was revealed Wednesday as the U.S. unsealed an indictment against Jong Woo Son, 23, who prosecutors say operated a Darknet market that accepted Bitcoin and distributed more than 1 million sexually explicit videos involving children. Son, a South Korean national, is in custody there, where he was convicted.

Since agents shuttered the site in March 2018, authorities have arrested more than 300 site ...