Book Image

Blockchain Quick Start Guide

By : Xun (Brian) Wu, Weimin Sun
Book Image

Blockchain Quick Start Guide

By: Xun (Brian) Wu, Weimin Sun

Overview of this book

Blockchain is a technology that powers the development of decentralized applications.This technology allows the construction of a network with no single control that enables participants to make contributions to and receive benefits from the network directly. This book will give you a thorough overview of blockchain and explain how a blockchain works.You will begin by going through various blockchain consensus mechanisms and cryptographic hash functions. You will then learn the fundamentals of programming in Solidity – the defacto language for developing decentralize, applications in Ethereum. After that, you will set up an Ethereum development environment and develop, package, build, and test campaign-decentralized applications.The book also shows you how to set up Hyperledger composer tools, analyze business scenarios, design business models, and write a chain code. Finally, you will get a glimpse of how blockchain is actually used in different real-world domains. By the end of this guide, you will be comfortable working with basic blockchain frameworks, and develop secure, decentralized applications in a hassle-free manner.
Table of Contents (14 chapters)
Title Page
Copyright and Credits
About Packt

Chapter 4. Building an Ethereum Blockchain Application

In the previous chapter, we reviewed the basic features of smart contracts and how to write a crowdfunding smart contract example. After we deployed the smart contract to the blockchain, we needed to write the web application to interact with the smart contract. Ethereum blockchain provides the web3 API by calling smart contract functions and getters.

In this chapter, we will cover the following topics:

  • What is a decentralized application (DApp)
  • web3js quick overview
  • Setting up an Ethereum development environment
  • Developing and testing a DApp