Book Image

Mastering Ethereum

By : Merunas Grincalaitis
Book Image

Mastering Ethereum

By: Merunas Grincalaitis

Overview of this book

Ethereum is one of the commonly used platforms for building blockchain applications. It's a decentralized platform for applications that can run exactly as programmed without being affected by fraud, censorship, or third-party interference. This book will give you a deep understanding of how blockchain works so that you can discover the entire ecosystem, core components, and its implementations. You will get started by understanding how to configure and work with various Ethereum protocols for developing dApps. Next, you will learn to code and create powerful smart contracts that scale with Solidity and Vyper. You will then explore the building blocks of the dApps architecture, and gain insights on how to create your own dApp through a variety of real-world examples. The book will even guide you on how to deploy your dApps on multiple Ethereum instances with the required best practices and techniques. The next few chapters will delve into advanced topics such as, building advanced smart contracts and multi-page frontends using Ethereum blockchain. You will also focus on implementing machine learning techniques to build decentralized autonomous applications, in addition to covering several use cases across a variety of domains such as, social media and e-commerce. By the end of this book, you will have the expertise you need to build decentralized autonomous applications confidently.
Table of Contents (17 chapters)
Free Chapter
1
Section 1: Blockchain - Ethereum Refresher
5
Section 2: Decentralized Application Development Workflow
12
Section 3: Ethereum Implementations

Finishing the dApp

To complete the dApp, we have to modify the React code to integrate the smart contract changes while also making sense of the way we receive the information from the blockchain using the right methods to display that data properly. Before this, make sure that your contracts are deployed to ropsten , as shown in the previous steps.

Setting up the contract instance

Because we are using webpack, we have access to all the files inside the source folder from the React files, which means that we can get the deployed smart contract ABI and the deployed contract address, as well as the required parameters to create a contract instance. This is shown in the following code:

import React from 'react'
import...