Stephen P. Williams is a journalist and author and coauthor of numerous works of nonfiction, including Blockchain: The Next Everything. He has written business and health columns for The New York Times and Newsweek and has contributed regularly to GQ, The Smithsonian, Martha Stewart Living, and other publications. He heads a sustainable fashion startup called Wm. Williams, which uses blockchain technology to manage distributed manufacturing. He lives in New York and has an MBA in Sustainability from Bard College and an MA in Communications from Stanford University.