Book Image

Hands-On Blockchain with Hyperledger

By : Nitin Gaur, Luc Desrosiers, Venkatraman Ramakrishna, Petr Novotny, Salman A. Baset, Anthony O'Dowd
Book Image

Hands-On Blockchain with Hyperledger

By: Nitin Gaur, Luc Desrosiers, Venkatraman Ramakrishna, Petr Novotny, Salman A. Baset, Anthony O'Dowd

Overview of this book

Blockchain and Hyperledger technologies are hot topics today. Hyperledger Fabric and Hyperledger Composer are open source projects that help organizations create private, permissioned blockchain networks. These find application in finance, banking, supply chain, and IoT among several other sectors. This book will be an easy reference to explore and build blockchain networks using Hyperledger technologies. The book starts by outlining the evolution of blockchain, including an overview of relevant blockchain technologies. You will learn how to configure Hyperledger Fabric and become familiar with its architectural components. Using these components, you will learn to build private blockchain networks, along with the applications that connect to them. Starting from principles first, you’ll learn to design and launch a network, implement smart contracts in chaincode and much more. By the end of this book, you will be able to build and deploy your own decentralized applications, handling the key pain points encountered in the blockchain life cycle.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Packt Upsell

Hyperledger Fabric architecture 

The Hyperledger Fabric architecture can be illustrated as follows:

Hyperledger Fabric architecture

Fabric CA or membership service provider

The membership service provider (MSP) is responsible for creating digital identities for peers and users of the organization. The identities of peers must be configured in an existing network in order for a new entity to participate in the channel.

Fabric CA is an implementation of the MSP and provides a mechanism for registering users from a network member and issuing them digital identities (X.509 certificates). Fabric CA typically runs inside a Docker container. Each Fabric CA is configured with a backend database (the default being SQLite, with other options, such as PostgreSQL or MySQL) which stores the registered identities, as well as their X.509 certificates. Fabric CA does not store the private keys of the users.


A peer is an entity that participates in a Hyperledger Fabric network. Its identity is determined...