ChainCatcher News, an agent from the Internal Revenue Service tracked and seized 120,000 bitcoins stolen from the cryptocurrency exchange Bitfinex using a MacBook Pro, which is now housed at the Smithsonian in Washington, D.C.Ellen Feingold, the curator of the National Numismatic Collection (NNC), explained in an article for Smithsonian Magazine on November 18: "This laptop is at the center of a criminal case, indicating that people's understanding of cryptocurrency is continually evolving."The owner of the laptop is former IRS agent Chris Janczewski, who now leads global investigations at blockchain intelligence firm TRM Labs. Janczewski helped uncover the keys to the 120,000 bitcoins stolen by Ilya Lichtenstein from Bitfinex, who was sentenced to five years in prison earlier this month for hacking.