Book Image

Blockchain Quick Start Guide

By : Xun (Brian) Wu, Weimin Sun
Book Image

Blockchain Quick Start Guide

By: Xun (Brian) Wu, Weimin Sun

Overview of this book

Blockchain is a technology that powers the development of decentralized applications.This technology allows the construction of a network with no single control that enables participants to make contributions to and receive benefits from the network directly. This book will give you a thorough overview of blockchain and explain how a blockchain works.You will begin by going through various blockchain consensus mechanisms and cryptographic hash functions. You will then learn the fundamentals of programming in Solidity – the defacto language for developing decentralize, applications in Ethereum. After that, you will set up an Ethereum development environment and develop, package, build, and test campaign-decentralized applications.The book also shows you how to set up Hyperledger composer tools, analyze business scenarios, design business models, and write a chain code. Finally, you will get a glimpse of how blockchain is actually used in different real-world domains. By the end of this guide, you will be comfortable working with basic blockchain frameworks, and develop secure, decentralized applications in a hassle-free manner.
Table of Contents (14 chapters)
Title Page
Copyright and Credits
About Packt

Chapter 1. Introduction to Blockchain Technology

Blockchain technology will disrupt current business models by making intermediary services obsolete. The term blockchain has become a buzzword worldwide. IT technologists are picking up blockchain books in flocks and starting to read about it in the hope of mastering the basic concepts. People are motivated to become professional blockchain application developers. Unless you pick up a well-written book, it often requires you to read many books and articles before the concepts of the blockchain become clear. To assist you in gaining a concise view of how an end-to-end blockchain application works, we outline a high-level introduction of the basic concepts along with the code-level details explaining how an actual application can be developed step by step. At the end of this book, we cover blockchain use cases in examples to inspire you to work on life-changing projects.

In this chapter, we give an overview of blockchain, along with its key concepts such as cryptography and hash algorithms, the distributed ledger, transactions, blocks, proof of work, mining, and consensus. We cover Bitcoin, the mother of blockchain technology, in detail. We briefly introduce Ethereum by pointing out some limitations of Bitcoin and how they are addressed by Ethereum. While Bitcoin and Ethereum are examples of public blockchains, IBM's Hyperledger is used as an example of enterprise blockchains. At the end of this chapter, we mention the evolution of the blockchain: blockchain 1.0, 2.0, 3.0, and beyond, based on their use cases. Specifically, we will cover the following topics on blockchain:

  • A genealogical analogy for blockchain
  • The Bitcoin consensus mechanism
  • A brief discussion of Hyperledger 
  • Blockchain evolution