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

How to choose a proper use case

With so much speculation about blockchain technology and its potential impacts on existing business models, it is a time to be realistic.  In Gartner's most recent Hype Cycle for Emerging Technologies report, blockchain is said to have entered the trough of disillusionment phase, the third phase of the company's hype cycle metric, as shown in the following screenshot:


Between Q4 2017 and Q1 2018, the price of 1 BTC reached above 19K and then quickly dropped down 10k in a matter of days. It is 3.4K on December 11, 2018. This eye-popping roller-coaster in BTC price has led to the cooling down of frantic speculations on cryptocurrencies and consequently a reduction in investment in cryptocurrency projects. In addition, the limitations of the technology are also a factor, making the technology unsuitable for certain use cases. A well known issue is the low rate of transactions per second (TPS) inherited by most blockchain platforms from Bitcoin, as discussed in...