Chapter Overview

Hyperledger Fabric client applications interact with Hyperledger Fabric blockchain networks on behalf of users. Since the launch of Hyperledger Fabric v1.4, applications can follow a new programming model that makes the development of decentralized applications more intuitive, allowing you to focus on the business logic.

The new programming model is implemented in a form of a separate module of the Hyperledger Fabric SDK called fabric-network.

In this chapter, we will learn about Wallet and Gateway concepts, follow the basic steps to submit a transaction, and implement a sample application in Node.js