Book Image

Learn Blockchain Programming with JavaScript

By : Eric Traub
Book Image

Learn Blockchain Programming with JavaScript

By: Eric Traub

Overview of this book

Learn Blockchain Programming with JavaScript begins by giving you a clear understanding of what blockchain technology is. You’ll then set up an environment to build your very own blockchain and you’ll add various functionalities to it. By adding functionalities to your blockchain such as the ability to mine new blocks, create transactions, and secure your blockchain through a proof-of-work you’ll gain an in-depth understanding of how blockchain technology functions. As you make your way through the chapters, you’ll learn how to build an API server to interact with your blockchain and how to host your blockchain on a decentralized network. You’ll also build a consensus algorithm and use it to verify data and keep the entire blockchain network synchronized. In the concluding chapters, you’ll finish building your blockchain prototype and gain a thorough understanding of why blockchain technology is so secure and valuable. By the end of this book, you'll understand how decentralized blockchain networks function and why decentralization is such an important feature for securing a blockchain.
Table of Contents (10 chapters)

New endpoints outline

In our blockchain, we would now like to create a network and have a way to register all of the different nodes that we have with it. Therefore, let's make a couple more endpoints that will make it possible to register nodes with our network.

Defining the /register-and-broadcast-node endpoint

The first endpoint that we create will be /register-and-broadcast-node, and this is defined as follows:'/register-and-broadcast-node', function (req, res) {


The preceding endpoint will register a node and broadcast that node to the whole network. It will do this by passing the URL of the node we want to register on the req body. Therefore, type the following inside the preceding endpoint...