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Blockchain for Enterprise

You're reading from  Blockchain for Enterprise

Product type Book
Published in Sep 2018
Publisher Packt
ISBN-13 9781788479745
Pages 220 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Narayan Prusty Narayan Prusty
Profile icon Narayan Prusty

Table of Contents (14) Chapters

Title Page
Packt Upsell
Contributors
Preface
1. What are Decentralized Applications? 2. Building Blockchain Using Quorum 3. Writing Smart Contracts 4. Getting Started with web3.js 5. Building Interoperable Blockchains 6. Building Quorum as a Service Platform 7. Building a DApp for Digitizing Medical Records 8. Building a Payment Solution for Banks 1. Other Books You May Enjoy Index

What is forking in blockchain?


A fork is said to have happened when there is a conflict among the nodes regarding the validity of the blockchain, that is, more than one blockchain happens to be in the network. There are three kinds of fork: regular, soft, and hard.

A regular fork is said to be happening when there are two or more blocks at the same height. It is a temporary conflict and is resolved automatically. This is resolved by nodes by selecting the most accurate blockchain. For example, in proof-of-work, if two miners mine a block at the same time then it creates a regular fork. And, this is resolved by selecting the blockchain with the highest difficulty as the most accurate one. 

A soft fork, by contrast, is any change to the blockchain protocol that's backward- compatible. Say, instead of 2 MB blocks, a new rule might only allow 1 MB blocks. Non-upgraded nodes will still see the new transactions as valid (1 MB is less than 2 MB in this example). However, if non-upgraded nodes continue...

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