Table of contents : Contents A Bitcoin FAQ 7 Introduction 9 Chapter 1: What is a bitcoin? 11 Why Bitcoin? 11 What you have when you have “a bitcoin” 11 The blockchain 13 Secured by waste: Proof of Work 13 Chapter 2: The Bitcoin ideology 17 Libertarianism and cyberlibertarianism 17 Pre-Bitcoin anonymous payment channels 18 The prehistory of cryptocurrencies 19 The conspiracy theory economics of Bitcoin 20 Austrian economics 23 Chapter 3: The incredible promises of Bitcoin! 25 Decentralised! Secured by math! 25 Anonymous! 26 Instant! No fees! 26 No chargebacks! 26 Be your own bank! 27 Better than Visa, PayPal or Western Union! 28 Remittances! 28 Bank the unbanked! 29 Economic equality! 30 The supply is limited! The price can only go up! 31 But Bitcoin saved Venezuela! 31 When the economy collapses, Bitcoin will save you! 32 You can use Bitcoin to buy drugs on the Internet! 33 Chapter 4: Early Bitcoin: the rise to the first bubble 35 The tulip bulb era 35 The art of the steal 38 Pirateat40: Bitcoin Savings & Trust 40 Bitcoin exchanges: keep your money in a sock under someone else’s bed 42 The rise and fall of Mt. Gox 44 Drugs and the Darknet: The Silk Road 48 Chapter 5: How Bitcoin mining centralised 55 The firetrap era 55 Abusing your hashpower for fun and profit 57 Chapter 6: Who is Satoshi Nakamoto? 59 Searching for Satoshi 59 Dorian Nakamoto 60 Professor Dr Dr Craig Wright: Nakamoto Dundee. That’s not a signature. 61 Chapter 7: Spending bitcoins in 2017 69 Bitcoin is full: the transaction clog 69 Bitcoin for drugs: welcome to the darknet 71 Ransomware 72 Non-illegal goods and services 74 Case study: Individual Pubs 78 Chapter 8: Trading bitcoins in 2017: the second crypto bubble 81 How to get bitcoins 81 From the first bubble to the second 82 Bitfinex: the hack, the bank block and the second bubble 83 Chapter 9: Altcoins 91 Litecoin 92 Dogecoin 92 Ethereum 94 Buterin’s quantum quest 96 ICOs: magic beans and bubble machines 97 Chapter 10: Smart contracts, stupid humans 101 Dr. Strangelove, but on the blockchain 101 So who wants smart contracts, anyway? 102 Legal code is not computer code 102 The oracle problem: garbage in, garbage out 103 Immutability: make your mistakes unfixable 105 Immutability: the enemy of good software engineering 105 Ethereum smart contracts in practice 106 The DAO: the steadfast iron will of unstoppable code 108 Chapter 11: Business bafflegab, but on the Blockchain 111 What can Blockchain do for me? 112 But all these companies are using Blockchain now! 114 Blockchains won’t clean up your data for you 115 Six questions to ask your blockchain salesman 117 Security threat models 118 Permissioned blockchains 119 Beneficiaries of business Blockchain 120 Non-beneficiaries of business Blockchain 121 “Blockchain” products you can buy! 121 UK Government Office for Science: “Distributed Ledger Technology: beyond block chain” 123 Chapter 12: Case study: Why you can’t put the music industry on a blockchain 125 The rights management quagmire 125 Getting paid for your song 126 The record industry’s loss of control and the streaming apocalypse 127 Berklee Rethink and blockchain dreams 128 Imogen Heap: “Tiny Human”. Total sales: $133.20. 129 Why blockchains are a bad fit for music 131 Attempts to make sense of the hype 132 Other musical blockchain initiatives 134 SingularDTV 136 Summary 137 Conclusion 139 Further reading 141 Acknowledgements 143 About the author 145 Glossary 147 Notes 161