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Building Blockchain Projects

You're reading from Building Blockchain Projects

Product type Book

Published in Apr 2017

Publisher Packt

ISBN-13 9781787122147

Pages 266 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Narayan Prusty

Table of Contents (16) Chapters

Title Page

Credits

About the Author

About the Reviewers

www.PacktPub.com

Customer Feedback

Preface

1. Understanding Decentralized Applications

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

Ethereum virtual machine

EVM (or Ethereum virtual machine) is the Ethereum smart contracts byte-code execution environment. Every node in the network runs EVM. All the nodes execute all the transactions that point to smart contracts using EVM, so every node does the same calculations and stores the same values. Transactions that only transfer ether also require some calculation, that is, to find out whether the address has a balance or not and deduct the balance accordingly.

Every node executes the transactions and stores the final state due to various reasons. For example, if there is a smart contract that stores the names and details of everyone attending a party, whenever a new person is added, a new transaction is broadcasted to the network. For any node in the network to display details of everyone attending the party, they simply need to read the final state of the contract.

Every transaction requires some computation and storage in the network. Therefore, there needs to be a transaction...

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Authors (1)

Narayan Prusty

Narayan Prusty is a full-stack developer. He works as a consultant for various start-ups around the world. He has worked on various technologies and programming languages but is very passionate about JavaScript, WordPress, Ethereum, Solr, React, Cordova, MongoDB, and AWS. Apart from consulting for various start-ups, he also runs a blog titled QNimate and a video tutorial site titled QScutter, where he shares information about a lot of the technologies he works on.

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