Auctions kicked off in a big way with the 2013 takedown of Silk Road, a dark web marketplace that traded in illegal goods.

"It could be 10 boats, 12 cars, and then one of the lots is X number of bitcoin being auctioned," said Jarod Koopman, director of the Internal Revenue Service's cybercrime unit. 

Auctions kicked off in a big way with the 2013 takedown of Silk Road, a dark web marketplace that traded in illegal goods.

"It could be 10 boats, 12 cars, and then one of the lots is X number of bitcoin being auctioned," said Jarod Koopman, director of the Internal Revenue Service's cybercrime unit.