According to Kim Aarenstrup, head of the National Police's Cyber Crime Centre (NC3), Danish police developed tools to prevent darknet drug trade. The tools, she explained in a press release, came in the form of new methods of Bitcoin transaction analysis. The engineers at NC3 used "new skills, methods, and technologies" to "to prove and punish rogue trades with bitcoin."
https://www.deepdotweb.com/2017/03/28/danish-police-make-headway-darknet-investigations/
Lol, but the FBI and DEA with quadruple their budget hasn't. The Danish police are full of shit lol