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The Essential Guide to Web3

You're reading from  The Essential Guide to Web3

Product type Book
Published in Nov 2023
Publisher Packt
ISBN-13 9781801813471
Pages 366 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Vijay Krishnan Vijay Krishnan
Profile icon Vijay Krishnan
LinkedIn
Vijay Krishnan, an experienced expert in blockchain and Web3, holds the position of head of SysOps for Linea, a Layer 2 blockchain at Consensys. With a rich background in blockchain, he's guided Fortune 100 companies from ideation to product build. With over 50 projects and 300+ use cases to his credit, Vijay has left an indelible mark on the industry. Prior to Consensys, he pioneered the AWS Partner Blockchain ecosystem and led IBM North America's Blockchain Practice. With two decades on Wall Street, he possesses deep financial and tech insights. Vijay, a leader and subject matter expert, empowers clients in DeFi, NFTs, gaming, and the metaverse. Beyond work, he's a mentor, speaker, author, and organic farmer. His knowledge and innovation continue to shape the blockchain and Web3 landscape.
See other products by Vijay Krishnan

Table of Contents (25) Chapters

Preface 1. Part 1 – Introduction to Web3
2. Chapter 1: Fundamentals of Blockchain and Web3 3. Chapter 2: Getting Started With Ethereum 4. Chapter 3: Your First Ethereum Transaction 5. Part 2 – All about Smart Contracts
6. Chapter 4: Introduction to Smart Contracts 7. Chapter 5: Creating and Deploying Your First Smart Contract 8. Chapter 6: Smart Contract Security and Access Controls 9. Part 3 – Writing Your DApps for Web3
10. Chapter 7: Developer Tools and Libraries for Web3 Development 11. Chapter 8: Writing and Testing Your First dApp on Web3 12. Part 4 – Fungible Tokens
13. Chapter 9: Introduction to Tokenization 14. Chapter 10: Creating Your First Token 15. Part 5 – Non-Fungible Tokens
16. Chapter 11: Non-Fungible Token Standards 17. Chapter 12: Creating Your First Non-Fungible Token 18. Part 6 – Web3 Advanced Topics
19. Chapter 13: Understanding Oracles 20. Chapter 14: Zero-Knowledge Proofs and Zero-Knowledge EVMs 21. Chapter 15: L2 Networks and Rollups 22. Chapter 16: Decentralized Autonomous Organizations – Overview 23. Index 24. Other Books You May Enjoy

Understanding oracles

Before we understand what an Oracle is, try to answer some of the questions presented here. Mark down your answers as Yes or No. Once you’ve completed this chapter, revisit your answers; everything will be clearer to you:

  • Is an oracle a corporation?
  • Is an oracle a database?
  • Is an oracle a program?
  • Is an oracle a source of information?
  • Is Oracle a data provider?
  • Is an oracle a node?
  • Is an oracle an API?
  • Is an oracle mandatory?

Oracle definition

A blockchain oracle is a third-party service that retrieves and verifies data from external sources and delivers it to a blockchain-based smart contract. Smart contracts are self-executing computer programs that run on a blockchain, but they are limited in that they can only access data that is stored on the blockchain. Oracles provide a way for smart contracts to access data from external data sources and execute it based on real-world conditions.

Oracles are programs...

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Authors (1)

Profile icon Vijay Krishnan
LinkedIn
Vijay Krishnan, an experienced expert in blockchain and Web3, holds the position of head of SysOps for Linea, a Layer 2 blockchain at Consensys. With a rich background in blockchain, he's guided Fortune 100 companies from ideation to product build. With over 50 projects and 300+ use cases to his credit, Vijay has left an indelible mark on the industry. Prior to Consensys, he pioneered the AWS Partner Blockchain ecosystem and led IBM North America's Blockchain Practice. With two decades on Wall Street, he possesses deep financial and tech insights. Vijay, a leader and subject matter expert, empowers clients in DeFi, NFTs, gaming, and the metaverse. Beyond work, he's a mentor, speaker, author, and organic farmer. His knowledge and innovation continue to shape the blockchain and Web3 landscape.
Read more
See other products by Vijay Krishnan

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