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

The letter of credit sample

And so we get to our sample. Alice, the owner of QuickFix IT in the Italy, wishes to buy computers from Bob, who runs Conga computers in the USA. Alice is going to apply for a letter or credit from her bank, Dinero Bank, which will be accepted by Bob's bank, Eastwood Banks, as a form of payment.

We're going to try out the whole process using the letter of credit sample application found at This repository contains a number of sample applications of business networks–we're going to use the letters of credit sample.

Installing the sample

If you've followed the steps in Chapter 3, Setting the Stage with a Business Scenario, you should have all of the prerequisites done. Now fork a copy of the sample application's repository ( to your GitHub account, and then clone it to your local machine using the following commands:

cd <your local git directory...