Part 3 focuses on the expanding Ethereum ecosystem, covering tokenization of assets, standards, test-driven development; a roadmap that captures the concepts, tools, and techniques introduced in parts 1 and 2; and the opportunities that lie ahead. The concepts of fungible and non-fungible tokens and standards are presented with a real estate token development. You’ll learn to develop JavaScript-based test scripts. I show an intuitive approach to write JS tests and run them by using Truffle test frameworks and commands. I discuss a roadmap and provide a blockchain-based solution to address inefficiency in a certificate program I manage at my institution. I conclude by reviewing many open issues in blockchain technology that the community is actively engaged in solving. Perhaps you can contribute too. You should be looking for opportunities to use blockchain’s trust and integrity features to solve problems.

Chapter 9 focuses on two areas of high interest in the blockchain field: tokens and coins. You’ll learn to code a non-fungible token application (RES4-Dapp) as an ERC721 standard token. Chapter 10 is about writing test scripts. Automating testing is explained by using it(), describe(), and beforeEach() primitives with three sample scripts to test Counter.sol, Ballot.sol, and BlindAuction.sol. In chapter 11, I provide a roadmap to help you navigate your Dapp developments. I also illustrate the use of the roadmap with an application from my domain of interest: educational credentialing (DCC-Dapp). Chapter 12 provides an overview of the road ahead for blockchain by discussing issues and solutions unique to blockchain applications.