🎟️ NFT Event Ticketing System

A decentralized application (dApp) for event ticketing where tickets are minted as NFTs (Non-Fungible Tokens) on the Ethereum blockchain. This ensures authenticity, prevents scalping, and gives users true ownership of their tickets.

🚀 Features

• Create Events: Organizers can list events with details (date, price, seat limit).
• Buy Tickets (Mint NFT): Users purchase tickets using crypto (ETH), which mints a unique NFT to their wallet.
• Wallet Connection: Seamless login using MetaMask / WalletConnect.
• Verification: Backend validates ownership of the NFT ticket for event entry.
• Resale Marketplace: (Optional) Secure secondary market for ticket resale.

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🛠️ Tech Stack

Frontend:

• React.js (Vite)
• Tailwind CSS (Styling)
• Ethers.js / Web3.js (Blockchain Interaction)
• Vercel (Deployment)

Backend:

• Node.js & Express.js
• PostgreSQL (Database)
• JWT (Authentication)
• Render (Deployment)

Blockchain:

• Solidity (Smart Contracts)
• Hardhat (Development Environment)
• Ethereum Sepolia Testnet

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📂 Project Structure

This project is a monorepo organized into three main sections:

├── frontend/       # React client application
├── backend/        # Node.js API server
├── blockchain/     # Smart contracts & Hardhat tests
└── README.md

Environmental Variables

You need to create a .env file in both the frontend and backend directories.

Backend

PORT=5000
DATABASE_URL=postgres://user:password@hostname:5432/dbname
JWT_SECRET=your_super_secret_key
# Blockchain Keys (If backend handles transactions)
ALCHEMY_API_KEY=your_alchemy_key
PRIVATE_KEY=your_wallet_private_key
CONTRACT_ADDRESS=0x123...

Frontend

VITE_API_URL=http://localhost:5000  # Change to production URL when deploying
VITE_CONTRACT_ADDRESS=0x123...

Getting Started (Local Deployment)

• Clone the Repository

  https://github.com/Rishika3D/NFT-Ticketing-System
  cd nft-ticketing-system

• Setup Blockchain

  Compile and deploy the contract to a local node or testnet.

  cd blockchain
  npm install
  npx hardhat compile
  npx hardhat run scripts/deploy.js --network sepolia
  # ⚠️ Copy the deployed Contract Address to your .env files!
  

• Setup Backend

cd ../backend
npm install
# Ensure you created the 'abi' folder and copied TicketSystem.json into it.
npm start

Server runs on http://localhost:5000

• Setup Frontend

cd ../frontend
npm install
npm run dev

Client runs on http://localhost:5173

🚀 Deployment Guide

Backend

• Create a Web Service on Render.

• Connect your GitHub repo.

• Settings:

  Root Directory: (Leave Empty)

  Build Command: cd backend && npm install

  Start Command: cd backend && node index.js

  Environment Variables: Add DATABASE_URL, JWT_SECRET, etc.

Database (Render PostgreSQL)

• Create a PostgreSQL instance on Render.

• Copy the Internal Connection String.

• Paste it into the Backend's DATABASE_URL variable.

Frontend (Vercel)

• Import the repo to Vercel.

• Root Directory: Select frontend.

• Environment Variables: VITE_API_URL: https://your-backend.onrender.com

• Deploy!

📋 License

This project is open-source and available under the MIT License.