Introduction

The tutorials in this section walk through the steps necessary to begin building on Hellar Platform using the Hellar JavaScript SDK. As all communication happens via the masternode hosted decentralized API (HAPI), you can begin using Hellar Platform immediately without running a local blockchain node.

Building on Hellar Platform requires first registering an Identity and then registering a Data Contract describing the schema of data to be stored. Once that is done, data can be stored and updated by submitting Documents that comply with the Data Contract.

📘 Tutorial code

You can clone a repository containing the code for all tutorials from GitHub or download it as a zip file.

Prerequisites

The tutorials in this section are written in JavaScript and use Node.js. The following prerequisites are necessary to complete the tutorials:

• Node.js (v20+)
• Familiarity with JavaScript asynchronous functions using async/await
• The Hellar JavaScript SDK (see Connecting to a Network)

Quickstart

While going through each tutorial is advantageous, the subset of tutorials listed below get you from a start to storing data on Hellar Platform most quickly:

• Obtaining test funds
• Registering an Identity
• Registering a Data Contract
• Submitting data