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)

Updating the mining information

The next thing that is required to synchronize the network is to update the /mine endpoint. We are also going to add a new endpoint, called /receive-new-block. There's a need to update the /mine endpoint so that whenever a new block is created by a node, that new block is broadcast to all the other nodes in the network. This means that every node on the network is aware that a new block has been created and all the nodes hosting the blockchain stay synchronized.

The updated mining process

Whenever a new block is mined, it will be mined on a particular node. To understand the updated mining process, let's assume that we want a node, hosted on port 3001, to mine a new block for the blockchain...