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Mastering Blockchain, Fourth Edition

You're reading from   Mastering Blockchain, Fourth Edition Inner workings of blockchain, from cryptography and decentralized identities, to DeFi, NFTs and Web3

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Product type Paperback
Published in Mar 2023
Publisher Packt
ISBN-13 9781803241067
Length 818 pages
Edition 4th Edition
Languages
Concepts
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Author (1):
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Imran Bashir Imran Bashir
Author Profile Icon Imran Bashir
Imran Bashir
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Table of Contents (24) Chapters Close

Preface 1. Blockchain 101 FREE CHAPTER 2. Decentralization 3. Symmetric Cryptography 4. Asymmetric Cryptography 5. Consensus Algorithms 6. Bitcoin Architecture 7. Bitcoin in Practice 8. Smart Contracts 9. Ethereum Architecture 10. Ethereum in Practice 11. Tools, Languages, and Frameworks for Ethereum Developers 12. Web3 Development Using Ethereum 13. The Merge and Beyond 14. Hyperledger 15. Tokenization 16. Enterprise Blockchain 17. Scalability 18. Blockchain Privacy 19. Blockchain Security 20. Decentralized Identity 21. Decentralized Finance 22. Blockchain Applications and What’s Next 23. Index

Identity in the world of Web3, DeFi, and Metaverse

Recall that in the times of web 1.0, the simple account-based model of a username and password pair was prevalent. This is still the case with a huge number of websites. However, with web 2.0, a new paradigm started to appear where one identity could be used to authenticate to other service providers too, instead of only the one on which it was originally created. We see this in use on many online services, e.g., “Sign in with Apple” or “Sign in with Google” buttons. Web 2.0 operates in a top-down trust model where centralized platforms are in charge. In the Web3 world, the user is empowered, and we can simply connect to a service provider based on our decentralized identity and the credentials that we possess. No more centralized account models and relying on trusted identity providers; all you need is a wallet and appropriate credentials to connect to a service provider. We saw a glimpse of this when...

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