They became famous as the privileged pair of Harvard athletes who believe Mark Zuckerberg stole their idea for Facebook. Now, entrepreneurs Cameron and Tyler Winklevoss have shifted their focus from social media to cryptocurrency, becoming among the first bitcoin billionaires, and launching a digital currency exchange mobile app, Gemini. Wired Magazine editor-in-chief Nicholas Thompson talks with the Winklevoss twins, and with Ben Mezrich, author of "Bitcoin Billionaires: A True Story of Genius, Betrayal, and Redemption."