Book Image

Blockchain Development with Hyperledger

By : Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny, Anthony O'Dowd, Venkatraman Ramakrishna, Weimin Sun, Xun (Brian) Wu
Book Image

Blockchain Development with Hyperledger

By: Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny, Anthony O'Dowd, Venkatraman Ramakrishna, Weimin Sun, Xun (Brian) Wu

Overview of this book

Blockchain and Hyperledger are open source technologies that power the development of decentralized applications. This Learning Path is your helpful reference for exploring and building blockchain networks using Ethereum, Hyperledger Fabric, and Hyperledger Composer. Blockchain Development with Hyperledger will start off by giving you an overview of blockchain and demonstrating how you can set up an Ethereum development environment for developing, packaging, building, and testing campaign-decentralized applications. You'll then explore the de facto language Solidity, which you can use to develop decentralized applications in Ethereum. Following this, you'll be able to configure Hyperledger Fabric and use it to build private blockchain networks and applications that connect to them. Toward the later chapters, you'll learn how to design and launch a network, and even implement smart contracts in chain code. By the end of this Learning Path, you'll be able to build and deploy your own decentralized applications by addressing the key pain points encountered in the blockchain life cycle. This Learning Path includes content from the following Packt products: • Blockchain Quick Start Guide by Xun (Brian) Wu and Weimin Sun • Hands-On Blockchain with Hyperledger by Nitin Gaur et al.
Table of Contents (25 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

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 https://github.com/hyperledger/composer-sample-applications. 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 (https://github.com/hyperledger/composer-sample-applications) to your GitHub account, and then clone it to your local machine using the following commands:

cd <your local git directory...