You're reading from Learn Ethereum - Second Edition

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Published inAug 2023

PublisherPackt

ISBN-139781804616512

Edition2nd Edition

Concepts

Blockchain

Authors (3):

Xun (Brian) Wu

Zhihong Zou

Dongying Song

View More author details

Working with oracles

Oracles play a vital role in bridging the gap between the blockchain network and the real world, enabling real-world data and services to be integrated into decentralized applications. In the decentralized world, several top oracle providers are widely used and trusted for their reliability and accuracy in delivering external information to blockchain systems. Here are the top 10 Oracle providers by Market Cap (from coingecko):

Figure 15.3 – Top 10 Oracle providers by Market Cap (from coingecko)

Now that we have an overview of the top 10 current oracle providers from the preceding diagram, let’s explore each of these providers in detail:

Chainlink: The Chainlink network, which uses the LINK cryptocurrency, was launched in June 2017 and is the leading oracle provider in the market. It is a decentralized blockchain oracle network built on Ethereum. The network provides secure and tamper-proof data from off-chain...

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Learn Ethereum - Second Edition

Published in: Aug 2023Publisher: PacktISBN-13: 9781804616512

Authors (3)

Xun (Brian) Wu

Xun (Brian) Wu is a senior blockchain architect and consultant. With over 20 years of hands-on experience across various technologies, including Blockchain, big data, cloud, AI, systems, and infrastructure, Brian has worked on more than 50 projects in his career. He has authored nine books, which have been published by O'Reilly, Packt, and Apress, focusing on popular fields within the Blockchain industry. The titles of his books include: 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.
Read more about Xun (Brian) Wu

Zhihong Zou

Zhihong Zou is an innovative technology leader with over 20 years of experience delivering cutting-edge enterprise solutions. He has led transformative solutions in telecommunications, healthcare, and government that leverage blockchain, AI/ML, and modern cloud architectures to solve complex business challenges. As an insightful visionary and trusted advisor, Zhihong is passionate about driving digital transformation and future-proofing organizations. He holds an M.Sc degree in computational mathematics and an M.Sc in computer science. Zhihong has authored multiple papers on numerical computing and two popular editions of the book Learn Ethereum. In his free time, Zhihong enjoys sharing his blockchain expertise as an advocate and writer.
Read more about Zhihong Zou

Dongying Song

Dongying Song has been a noteworthy leader in Blockchain, Ethereum, big data, ML, data science, and the cloud application development space for over 8 years. As an experienced software engineer and data scientist, she has worked for top-tier banks and pharmaceutical and technology companies. Dongying holds a master's degree in statistics from Columbia University and majored in mathematics during her undergraduate years. Her recent activities focus on Blockchain, Ethereum, and smart contract developments.
Read more about Dongying Song

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Working with oracles

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Authors (3)

Et al.

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