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Building Blockchain Projects

You're reading from   Building Blockchain Projects Building decentralized Blockchain applications with Ethereum and Solidity

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Product type Paperback
Published in Apr 2017
Publisher Packt
ISBN-13 9781787122147
Length 266 pages
Edition 1st Edition
Languages
Concepts
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Author (1):
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Narayan Prusty Narayan Prusty
Author Profile Icon Narayan Prusty
Narayan Prusty
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Table of Contents (10) Chapters Close

Preface 1. Understanding Decentralized Applications FREE CHAPTER 2. Understanding How Ethereum Works 3. Writing Smart Contracts 4. Getting Started with web3.js 5. Building a Wallet Service 6. Building a Smart Contract Deployment Platform 7. Building a Betting App 8. Building Enterprise Level Smart Contracts 9. Building a Consortium Blockchain

Genesis block


A genesis block is the first block of the blockchain. It's assigned to block number 0. It's the only block in the blockchain that doesn't reference to a previous block because there isn't any. It doesn't hold any transactions because there isn't any ether produced yet.

Two nodes in a network will only pair with each other if they both have the same genesis block, that is, blocks synchronization will only happen if both peers have the same genesis block, otherwise they both will reject each other. A different genesis block of high difficulty cannot replace a lower difficult one. Every node generates its own genesis block. For various networks, the genesis block is hardcoded into the client.

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