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

Discussing events from the perspective of designing a business network using Composer

We've seen so far that the vocabulary of business networks contains a compact set of inextricably linked concepts—participants, assets, and transactions. Though small in number, these concepts are very expressive—they contain big ideas, with lots of aspects to them, which support and reinforce each other.

It's not that there's something missing, but by adding one extra concept, we're going to significantly increase the descriptive and design power of this vocabulary. This final concept is event—the last ingredient in the mix! The good news is that you've probably heard the term before, and many of the ideas that it supports are quite obvious. But make no mistake, events are a hugely powerful concept, and worth a little time to master—your investment in this topic will be handsomely rewarded.

A universal concept

We think of an event as denoting the occurrence or happening of a particular fact. For example,...