Mastering Blockchain
Fourth Edition
Inner workings of blockchain, from cryptography and decentralized identities, to DeFi, NFTs and Web3
Mastering Blockchain
Fourth Edition
Copyright © 2023 Packt Publishing
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First published: March 2017
Second edition: March 2018
Third edition: August 2020
Fourth edition: March 2023
Production reference: 2040723
Published by Packt Publishing Ltd.
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ISBN: 978-1-80324-106-7
Disclaimer: The information and viewpoints expressed in this book are those of the author and not necessarily those of any of the author’s employers or their affiliates.
This book is dedicated with immeasurable love and gratitude to my beloved father.The most affectionate, selfless, and hardworking man, who sacrificed everything for me.
Don’t worry, my son! Adversities come and go.
—Scientist Bashir Ahmed Khan
76 → 363 → 1245 → 1003 → 275 → 77 → 60 → 588 → 1 → 12 → 12 → 2215 → 
Contributors
About the author
has an MSc in Information Security from Royal Holloway, University of London. He has a background in software development, solution architecture, infrastructure management, information security, and IT service management. His current focus is on the latest technologies, such as blockchain and quantum computing. He is a member of the Institute of Electrical and Electronics Engineers (IEEE). He has worked in various senior technology roles for different organizations around the world.
I would like to thank Edward Doxey for his dedication and Packt for their support and guidance throughout this project. I also want to thank John Cornyn, who read the previous edition of this book and suggested some corrections, as well as the reviewers of this edition.
I want to thank my wife and children for their support while I was writing, especially during the time I was supposed to spend with them.
Finally, I want to thank my father, who has always been there for me and always will be. And my mother, whose encouragement makes difficult obstacles easy to surmount for me. My parents’ prayers and unconditional love for me have enabled me to achieve anything I desire.
Disclaimer: The information and viewpoints expressed in this book are those of the author and not necessarily those of any of the author’s employers or their affiliates.
About the reviewers
is a senior blockchain architect and consultant. Brian has over 20 years of hands-on experience across various technologies, including blockchain, big data, cloud, AI, systems, and infrastructure. He has worked on more than 50 projects in his career.
He has written nine books, published by O’Reilly, Packt, and Apress, on popular fields within the blockchain domain, including Learn Ethereum, First Edition; Learn Ethereum, Second Edition; Blockchain for Teens; Hands-On Smart Contract Development with Hyperledger Fabric V2; Hyperledger Cookbook; Blockchain Quick Start Guide; Security Tokens and Stablecoins Quick Start Guide; Blockchain By Example; and Seven NoSQL Databases in a Week.
is a computer engineer and has worked in software development for the last 21 years. He has been involved in blockchain development for about 8 years using different blockchain frameworks, like Ethereum (L1, L2, L3), Substrate, Polkadot, Solana, Cosmos (IBC), CasperLabs, Tezos, etc using various programming languages like C++, Rust, Golang, Ocaml, and Haskell.
He has worked with many different crypto startups since 2014 and as a blockchain consultant, he has worked with Mina Protocol, FTX, and others.
I would like to thank my friends who have worked with me on projects related to blockchain.
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