Creating multiple nodes

Let's begin by building the decentralized network:

1. The first thing that we'll have to do to create our decentralized blockchain network is make some modifications to our api.js file.
2. In our decentralized network, we're going to have multiple instances of our API, and each one of them will act as a network node. Since we'll be dealing with multiple network nodes, it will be better to rename our api.js file to networkNode.js for easy reference.
3. To set up the decentralized network, we'll have to run the networkNode.js file multiple times. Each time we run the file, we want it to act as a different network node. Let's do this by running the file on different ports every time we run it. To have a different ports value every time, we'll have to make port a variable. To do this, add the following line at the start of the code...