Let’s Build a Dapp with Node.js and Koinos Pro [PART 1] Generate API Key

This is part 1 of the ‘Let’s Build on Koinos’ series where I go step-by-step on how to build a Node.js application capable of interacting with the Koinos blockchain.

For the sake of clarity, in this series, “Dapp” will refer to any application that utilizes blockchain technology. We will be creating a Dapp that can call smart contract functions created and audited by other developers.

You do NOT need to code smart contracts to harness the power of blockchain technology. Making use of existing contracts is a great way to start.

Let’s get started.

Step 1: Generate API Key via Koinos Pro

This can be done quickly with an API endpoint provided by Koinos Pro to make GET and POST json requests.

Free version available at https://koinos.pro/

Fast account creation (5 mins)

After creating an account, generate an API key.

We can choose between MAINNET and TESTNET, let’s use testnet for this tutorial.

https://api.harbinger.koinos.pro/jsonrpc?apikey=[your API key here]

Replace [your API key here] with… you guessed it, your API key!

API Documentation: https://docs.koinos.pro/api_keys/

Nothing we need here, but it’s a useful link with a list of API connection methods.

In Part 2 we will create a wallet and get tKoin airdropped for interacting with the blockchain.