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

Setting up a Hyperledger Composer environment

We just reviewed the Hyperledger Composer solution architecture. In this section, we will set up the Hyperledger development environment.

Installation prerequisites

Before we install the composer tools, make sure you have the required prerequisites by following the Setup of Hyperledger Fabric environment—installing prerequisites section.


Installing the development environment

The following are the installation commands for developing the environment:

  • Installing the CLI tools:
      npm install -g [email protected]
  • Installing composer-rest-server:
      npm install -g [email protected]
  • Installing Hyperledger Composer generator:
      npm install -g [email protected]
  • Installing Yeoman:
      npm install -g yo
  • Installing playground:
      npm install -g composer-playground
  • Installing fabric runtime:

Download and install fabric runtime for the composer as follows:

 mkdir ~/fabric-devserver && cd ~/fabric-devserver
      curl -O...