The first, foundational book on blockchain technology, from the bestselling author of Wikinomics Don Tapscott and blockchain expert Alex Tapscott, now in paperback with a new preface and chapter explaining recent developments in the world of blockchain, including cryptoassets, ICOs, smart contracts, and more. "This book has had an enormous impact on the evolution of blockchain in the world." -Satya Nadella, CEO, Microsoft CorporationIn this revelatory book, Don and Alex Tapscott bring us a brilliantly researched, highly readable, and essential book about the technology driving the future of the economy. Blockchain is the ingeniously simple, revolution­ary protocol that allows transactions to be simultaneously anonymous and secure by maintaining a tamperproof public ledger of value. Though it's best known as the technology that drives bitcoin and other digital cur­rencies, it also has the potential to go far beyond currency, to record virtually everything of value to humankind, from birth and death certifi­cates to insurance claims, land titles, and even votes. As with major paradigm shifts that preceded it, blockchain technology will create winners and losers. This book shines a light on where it can lead us in the next decade and beyond.