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)

Building the /register-node endpoint

Now that we have built the /register-and-broadcast-node endpoint, it's time we move on to some things that are a little less complex. In this section, let's begin building the register-node endpoint. This is going to be very straightforward compared to the endpoint that we built in the previous section.

This register-node endpoint is where every node in the network is going to receive the broadcast that is sent out by our register-and-broadcast-node endpoint. The only thing that this register-node endpoint has to do is register the new node with the node that receives the request for it.

To begin building the register-node endpoint, follow these steps:

  1. The first thing that we'll have to do is define the newNodeUrl; therefore, add the following highlighted line of code:
// register a node with the network
app.post('...