Book Image

Mastering Blockchain - Third Edition

By : Imran Bashir
Book Image

Mastering Blockchain - Third Edition

By: Imran Bashir

Overview of this book

Blockchain is the backbone of cryptocurrencies, with applications in finance, government, media, and other industries. With a legacy of providing technologists with executable insights, this new edition of Mastering Blockchain is thoroughly revised and updated to the latest blockchain research with four new chapters on consensus algorithms, Serenity (the update that will introduce Ethereum 2.0), tokenization, and enterprise blockchains. This book covers the basics, including blockchain’s technical underpinnings, cryptography and consensus protocols. It also provides you with expert knowledge on decentralization, decentralized application development on Ethereum, Bitcoin, alternative coins, smart contracts, alternative blockchains, and Hyperledger. Further, you will explore blockchain solutions beyond cryptocurrencies such as the Internet of Things with blockchain, enterprise blockchains, tokenization using blockchain, and consider the future scope of this fascinating and disruptive technology. By the end of this book, you will have gained a thorough comprehension of the various facets of blockchain and understand their potential in diverse real-world scenarios.
Table of Contents (24 chapters)


MetaMask allows interaction with Ethereum blockchain via the Firefox and Chrome browsers. It injects a web3 object within the running websites' JavaScript context, which allows immediate interface capability for DApps. This injection allows DApps to interact directly with the blockchain.

It is available at

Further information is available at

MetaMask also allows account management. This acts as a verification method before any transaction is executed on the blockchain. The user is shown a secure interface to review the transaction for approval or rejection before it can reach the target blockchain.

Figure 13.18: MetaMask

It allows connectivity with various Ethereum networks as shown in the following screenshot. This is a screenshot of the MetaMask User Interface (UI), where it allows users to select the network of their choice:

Figure 13.19: MetaMask networks...