Bloomberg Opinion columnist Barry Ritholtz interviews Paul Vigna, a Wall Street Journal reporter who covers the cryptocurrency sector. His most recent book, co-authored with Michael J. Casey, is "The Truth Machine: The Blockchain and the Future of Everything." He and Casey also co-authored 2015's "The Age of Cryptocurrency: How Bitcoin and the Blockchain Are Challenging the Global Economic Order."

See omnystudio.com/listener for privacy information.