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Learn Ethereum

You're reading from   Learn Ethereum A practical guide to help developers set up and run decentralized applications with Ethereum 2.0

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Product type Paperback
Published in Aug 2023
Publisher Packt
ISBN-13 9781804616512
Length 814 pages
Edition 2nd Edition
Languages
Concepts
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Authors (3):
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Dongying Song Dongying Song
Author Profile Icon Dongying Song
Dongying Song
Zhihong Zou Zhihong Zou
Author Profile Icon Zhihong Zou
Zhihong Zou
Xun (Brian) Wu Xun (Brian) Wu
Author Profile Icon Xun (Brian) Wu
Xun (Brian) Wu
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Toc

Table of Contents (24) Chapters Close

Preface 1. Part 1: Blockchain and Ethereum Basics
2. Chapter 1: Blockchain and Cryptocurrency FREE CHAPTER 3. Chapter 2: Ethereum Architecture and Ecosystem 4. Chapter 3: Decentralized Finance 5. Chapter 4: EVM-Compatible Blockchain Networks 6. Chapter 5: Deep Research and the Latest Developments in Ethereum 7. Part 2:Ethereum Development Fundamentals
8. Chapter 6: Fundamentals of Solidity 9. Chapter 7: Web3 API Fundamentals 10. Chapter 8: Developing Your Own Cryptocurrency 11. Part 3: Ethereum Development Fundamentals
12. Chapter 9: Smart Contract Development and Test Fundamentals 13. Chapter 10: Writing a Frontend to Build the NFT Marketplace DApp 14. Chapter 11: Ethereum Tools and Frameworks 15. Part 4:Production and Deployment
16. Chapter 12: Setting Up Ethereum Private Chain 17. Chapter 13: Deployment of Your DApps 18. Chapter 14: Building Ethereum Wallets 19. Chapter 15: Oracles, Technology, and Layer 2 in Practice 20. Part 5:Conclusion
21. Chapter 16: Conclusion 22. Index 23. Other Books You May Enjoy

Summary

In this chapter, you learned about oracles in terms of their features and types. We discussed how an oracle can act as a bridge between the blockchain network and the real world by explaining various blockchain oracle examples. We studied the most popular oracle service, known as Chainlink, and used the Chainlink API to write a VRF dice-rolling game.

With our knowledge of cross-chain technology from previous chapters, in the Diving deep into cross-chain technology section, we covered how cross-chain bridges work and covered their vulnerabilities. As we saw, many types of cross-chain are available in the industry. We then ran a real-world example of bridging tokens from Ethereum to Avalanche. We also demonstrated how to move ETH from Ethereum to Polygon (MATIC).

After reviewing various Layer 2 solutions, including optimistic rollups and ZK rollups, we learned about the differences between these rollup solutions. We also discussed zk-SNARKs and zk-STARKs. Finally, we wrote...

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