Book Image

Blockchain Quick Reference

By : Mariko Amekodommo, Brenn Hill, Samanyu Chopra, Paul Valencourt
Book Image

Blockchain Quick Reference

By: Mariko Amekodommo, Brenn Hill, Samanyu Chopra, Paul Valencourt

Overview of this book

Blockchain Quick Reference takes you through the electrifying world of blockchain technology and is designed for those who want to polish their existing knowledge regarding the various pillars of the blockchain ecosystem. This book is your go-to guide, teaching you how to apply principles and ideas for making your life and business better. You will cover the architecture, Initial Coin Offerings (ICOs), tokens, smart contracts, and terminologies of the blockchain technology, before studying how they work. All you need is a curious mind to get started with blockchain technology. Once you have grasped the basics, you will explore components of Ethereum, such as ether tokens, transactions, and smart contracts, in order to build simple Dapps. You will then move on to learning why Solidity is used specifically for Ethereum-based projects, followed by exploring different types of blockchain with easy-to-follow examples. All this will help you tackle challenges and problems. By the end of this book, you will not only have solved current and future problems relating to blockchain technology but will also be able to build efficient decentralized applications.
Table of Contents (24 chapters)

Proof of Authority

Proof-of-authority (PoA) networks are used only when all blockchain participants are known. In proof-of-authority, each participant is known and registered with the blockchain. Such a blockchain is called a permissioned chain, as only computers that are part of this approved list of authorities are able to forge blocks. It is critical, therefore, that none of the authority computers is compromised, and each operator must take pains to ensure the integrity of their validator. This approach was originally shared by Gavin Wood of Parity Technologies as a different way of running an Ethereum-based blockchain.

Establishing authority

The three main conditions that must be fulfilled for a validator to be established...