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

Core component model

To run Hyperledger Fabric, we need a few main components; these are a Membership Service Provider (MSP), Fabric CA, peers, and an ordering service. We need to understandexactly how they work and the way to collect them.


The peers are the physical layer where the ledger data is stored and the chaincode is processed. A blockchain network is comprised primarily of a set of peer nodes. Every peer maintains its own copy of the shared ledger and is certified by a single MSP. The peer can have two roles: endorsing nodes or committing nodes.

The endorsing node processes transaction proposals and it returns the signed result to the client.

The ordering service sends a block of transactions to the committing node. The committing node validates if the data is in a consistent state. Once verified, it commits the transaction in the ledger and updates the world state in store data.

Membership service provider (MSP)

MSP is a pluggable interface that aims to offer an abstraction of...