If you’ve committed any internet crimes lately, you probably shouldn’t have paid for them with Bitcoin. While many crypto-evangelists have long thought of digital currency as a means of buying legal and illicit goods on the web with total anonymity, the fact is that nearly all cryptocurrency transactions leave a digital trail behind them that can point to your true identity. No matter how hard you try to hide, a dedicated sleuth with the right resources can find you.This week on Gadget Lab, WIRED senior cybersecurity writer and author of the book Tracers in the Dark digs into all the ways investigators, government agents, and hackers can track down criminals online by “following the money” exchanged in cryptocurrency transactions.This show originally aired on February 9, 2023.Show NotesAndy’s book is Tracers in the Dark: The Global Hunt for the Crime Lords of Cryptocurrency. You can read two excerpts from the book on WIRED.com: the six-part AlphaBay saga and the feature about the takedown of a website for sharing child sex abuse materials.RecommendationsAndy recommends the deliberately frustrating game Getting Over It. Lauren recommends Andy’s WIRED story about the animal activists whose spy cams revealed the grim realities of pork slaughterhouses. Mike recommends the book Art Is Life by the art critic Jerry Saltz.Andy can be found on social media @a_greenberg. Lauren Goode is @LaurenGoode. Michael Calore is @snackfight. Bling the main hotline at @GadgetLab. The show is produced by Boone Ashworth (@booneashworth). Our theme music is by Solar Keys.