Introduction

The Survey Mini dApp is a privacy-focused decentralized application (dApp) that allows users to create and participate in surveys while maintaining anonymity and transparency. By leveraging cutting-edge tools like Semaphore for zero-knowledge proof integration, and LINE's developer ecosystem, this guide walks you through every step to build and deploy a survey mini dApp on the Kaia blockchain.

This comprehensive guide covers:

• What the application does and its objectives.
• The tools and prerequisites needed.
• Setting up a smart contract development environment.
• Frontend integration and deployment.

To get started quickly, you'll find the entire code for this tutorial on Github. This way, you can explore the application's inner workings as you follow along.

Prerequisite

To build this application, ensure you have the following:

1. Technical Knowledge
   • Solid understanding of Solidity.
   • Proficiency in JavaScript and React/Next.js.
   • Familiarity with smart contract development tools like Hardhat.
2. Accounts and Tools
   • LINE Developer Account.
   • Semaphore Protocol setup.
   • Mini Dapp SDK Client ID received from Dapp Portal team.
3. Dependencies Installed
   • Node.js and npm.

Project Setup and Installation

To start the project setup and installation quickly, clone this project on Github using the following command.

# clone project

git clone https://github.com/kjeom/ExampleMiniDapp

Next, change the directory into the cloned folder and install the project locally using npm with the following command:

cd ExampleMiniDapp

npm install

Next, let’s understand the inner workings of the smart contract for our survey application. The next section explains how it works.