“Using special algorithms, the researchers were able to associate large numbers of seemingly anonymous bitcoins addresses with certain major services such as exchanges and payment processors, said Sarah Meiklejohn, a doctoral candidate in computer science at UC San Diego, who assisted in the research. For example, they linked more than 500,000 Bitcoin addresses with Mt. Gox, a popular exchange in Japan where users buy and sell bitcoins. ‘We saw a lot of people deposit into Silk Road directly from their Mt. Gox address,’ Meiklejohn said. In those cases, law enforcement would have minimal work to obtain the name of a user if they presented a legal order to Mt. Gox.”
