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

Configuring Hyperledger Fabric

There are three entities in the insurance claim network—insuree, broker, and insurer. All of these participants will register in Fabric as a peer node. The following table describes the three peer roles and MSP information:

User ID


Organization MSP ID











We have one insuree who joins the organization with MSP ID org1, one broker who joins the organization with MSP ID org2, and one insurer who joins the organization with MSP ID org3. For bootstrapping the fabric network, we need to first generate crypto material for all three components that we need to run.

Generating the certificate

We need to define crypto-config.yaml and use the cryptogen tool to generate the certificates for each peer. Cryptogen is available in the tools image. crypto-config.yaml contains the following information:

  • OrdererOrgs: Definition of organizations managing orderer nodes
  • PeerOrgs: Definition of organizations managing...