Paul Vigna

The Truth Machine: The Blockchain and the Future of Everything


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      HarperCollinsPublishers

      1 London Bridge Street

      London SE1 9GF

       www.harpercollins.co.uk

      First published in the US by St Martin’s Press 2018

      This UK edition published by HarperCollinsPublishers 2018

      FIRST EDITION

      © Paul Vigna and Michael J. Casey 2018

      Cover photograph (Locks) © Tatiana Popova/Shutterstock.com

      Cover design by Rob Grom

      A catalogue record of this book is available from the British Library

      Paul Vigna and Michael J. Casey assert the moral right to be identified as the authors of this work

      All rights reserved under International and Pan-American Copyright Conventions. By payment of the required fees, you have been granted the nonexclusive, non-transferable right to access and read the text of this e-book on screen. No part of this text may be reproduced, transmitted, downloaded, decompiled, reverse engineered, or stored in or introduced into any information storage retrieval system, in any form or by any means, whether electronic or mechanical, now known or hereinafter invented, without the express written permission of HarperCollins e-books.

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      Source ISBN: 9780008301774

      Ebook Edition © March 2018 ISBN: 9780008301781

      Version 2018-03-01

      For Liz, Jenny, Sarah, and Di

      —MC

      For my mom and dad

      —PV

       Contents

       Cover

       Title Page

       A Note from the Authors

       4. The Token Economy

       5. Enabling the Fourth Industrial Revolution

       6. The Old Guard’s New Makeover

       7. Blockchains for Good

       8. A Self-Sovereign Identity

       9. Everyone’s a Creator

       10. A New Constitution for the Digital Age

       Notes

       List of Searchable Terms

       Acknowledgments

       Other Books By

       About the Publisher

       A Note from the Authors

      Throughout this book you will see a distinction between “bitcoin” written with a lowercase “b” and “Bitcoin” with an uppercase “B.” The former refers to bitcoin’s status as a currency, the latter is a reference to the overarching system and protocol that underpins that currency and other uses for the Bitcoin blockchain ledger.

      Addressing an inconsistency in popular parlance, we generally employ three distinct usages of the word “blockchain”: “The blockchain,” which refers to Bitcoin’s original distributed ledger; “a blockchain”— or, pluralized, “blockchains”— to cover a variety of more recent distributed ledgers that share Bitcoin’s chain-of-blocks structure; and “blockchain technology,” referring to the overall field. We also use “distributed ledger technology” to encompass both blockchain and non-blockchain distributed ledgers. We mostly avoid the popular construct of “blockchain” as a non-countable noun. We view a blockchain, like any ledger, as a distinct, identifiable thing, not a process. The book’s title uses the definite article form to acknowledge the catalytic role that the original Bitcoin blockchain played in unleashing this field.

      In The Age of Cryptocurrency, we explored the digital currency bitcoin and its promise of a fairer global payments system, one that functions without banks and other financial intermediaries. As that book was going to print, Bitcoin’s wider application—how its core operating system can help resolve problems of trust between individuals and businesses when they trade assets, enter into contracts, assert claims to property, or share valuable or sensitive information—came to the fore. Within companies, governments, and the media, a groundswell of interest, including a fair bit of hype, turned toward what became known as “blockchain technology.”

      In resolving longstanding problems of trust and enabling a community to track its transactions without entrusting that record-keeping process to a central intermediary, the blockchain idea promised a way to bypass the various gatekeepers who control society’s exchanges of value. It could, for instance, let a neighborhood of “prosumers”—households that both consume power and produce it with solar panels on their roofs—trade energy among themselves within a decentralized marketplace and without a profit-driven utility company setting the rates. Similarly, property owners, buyers, and mortgage lenders would not have to trust an unreliable government registry as the only record of deeds