Our Secured Online Voting Application purpose is to provide voting in secure manner using Hedera’s functionality of SmartContract. The primary purpose is to provide a transparent voting/polling process. Our team’s objective is to safeguard voter anonymity, prevent double voting and provide a real-time voting tallying. Key features includes a user friendly UI, secure vote casting using Hedera smart contract based vote validation and tallying. The project aims to demonstrate the voting process ensuring security and integrity in online elections.

The frontend of this project is built using React with Javascript and TypeScript for type safety, and Material UI for a sleek, responsive design.

The backend is developed in JavaScript with Express.js, and it leverages Hedera Hashgraph for decentralized identity management and secure voting. The backend also handles user authentication, vote counting, and ensures that all votes are immutably recorded on the Hedera blockchain.

• Hedera DID Generation: Every user has a unique DID (Decentralized Identifier) generated using Hedera, ensuring secure and verifiable identities.

• Vote Recording on Blockchain: Votes are securely recorded on the Hedera network, making the voting process tamper-proof and transparent.
• One Vote per User: Each user is allowed to vote only once per candidate, enforced by DID verification.

• Hedera Transaction Fees: A small transaction fee is deducted when users vote, simulating real-world voting scenarios.

• Candidate Creation: Admins can create election candidates, including fields for their name, position, description, and the election status.
• Vote Counting: Votes are tracked in real-time, and users can view the current standings of all candidates.

• Candidate Filtering: Users can filter candidates based on votes or positions, allowing for easy navigation of election data.

• Node.js (v18.x or higher)
• NPM or Yarn
• MongoDB
• Hedera Testnet Account

1. Clone the Repository

   git clone https://github.com/Cooperation-org/Hackathon-app.git
   cd Hackathon-app

2. Install Dependencies

   npm install

3. Set Up Environment Variables

   Create a .env file in the root directory with the following content:

   PORT=5000
   MONGO_URI=your_mongodb_connection_string
   JWT_SECRET=4e1e8e321bb42547b48a838552147edf5209174d707fcdc9323656e2946ff066
   HEDERA_ACCOUNT_ID=your_hedera_account_id
   HEDERA_PRIVATE_KEY=your_hedera_private_key
   

4. Start the Backend

   npm run start

1. Navigate to the Frontend Directory

   cd frontend

2. Install Dependencies

   yarn install

3. Start the Frontend

   yarn run dev

Admins can create election candidates by sending a POST request to the /api/election/create-candidate endpoint with the following JSON payload:

{
  "candidateName": "Peter Ani",
  "position": "Dao President",
  "description": "Committed to positive change in the Dao Ecosystem."
}

Authenticated users can vote for a candidate by sending a POST request to the /api/election/vote endpoint with the following JSON payload:

{
  "candidateId": "candidate_object_id_here"
}

Users can view and filter election candidates by sending a GET request to the /api/election/list-candidates endpoint. Filters can be applied using query parameters:

/api/election/list-candidates?filterBy=position&value=President

• Peter Ani - Backend & HashGraph Developer
• Amal Ahmed [Moka] - Frontend Developer
• Anuja Chivate - Project Manager & Frontend Developer
• Umoren Emmanuel - Web3 UI/UX Designer