DiploChain 🎓

A revolutionary blockchain-based diploma verification platform built on Ethereum, enabling secure, transparent, and instant verification of academic credentials.

🌟 Overview

DiploChain is a decentralized application (DApp) that leverages blockchain technology to create an immutable, secure system for diploma issuance and verification. The platform connects educational institutions, students, and companies through smart contracts, ensuring the authenticity and integrity of academic credentials.

✨ Key Features

🔐 Secure Blockchain Storage

• Diplomas stored immutably on Ethereum blockchain
• IPFS integration for metadata storage
• Tamper-proof certificate validation

⚡ Instant Verification

• Real-time diploma authenticity verification
• Token-based verification system (10 DIPTOK per verification)
• Automated verification process for employers

🏫 Multi-Role Support

• Students: Receive and manage blockchain diplomas
• Institutions: Issue verified academic credentials
• Companies: Verify candidate qualifications instantly

🪙 Token Economy

• DiplomaToken (DIPTOK): Platform utility token
• Purchase rate: 0.01 ETH = 100 DIPTOK
• Evaluation rewards: 15 DIPTOK for internship evaluations

🏗️ Technical Architecture

Smart Contracts

• DiplomaNFT.sol: ERC721 NFT contract for diploma certificates
• DiplomaToken.sol: ERC20 token for platform transactions
• OpenZeppelin: Security-focused contract libraries

Frontend

• Next.js 15: React-based web application
• TypeScript: Type-safe development
• Ethers.js & Web3.js: Blockchain interaction
• SCSS: Modular styling architecture

Blockchain Integration

• Network: Blaze Testnet (Sonic Labs)
• Chain ID: 57054
• RPC URL: https://rpc.blaze.soniclabs.com

🚀 Deployed Contracts

DiplomaToken (DIPTOK)

• Address: 0xF0bC756473b8667912E7EB0413301ceCf5c08a4A
• Explorer: View on Blaze Explorer

MockNFTDiploma

• Address: 0x232B40F317315A303D75A7d846c85e8330db4329
• Explorer: View on Blaze Explorer

📁 Project Structure

DiploChain/
├── frontend/ # Next.js web application
│ ├── src/
│ │ ├── app/ # App router pages
│ │ │ ├── Dashboard/
│ │ │ │ ├── Students/ # Student dashboard
│ │ │ │ ├── Institutions/ # Institution dashboard
│ │ │ │ └── Companies/ # Company dashboard
│ │ ├── components/ # Reusable React components
│ │ │ ├── Diploma/ # Diploma-related components
│ │ │ ├── Token/ # Token management
│ │ │ └── Web3/ # Blockchain integration
│ │ ├── hooks/ # Custom React hooks
│ │ └── utils/ # Utility functions
├── smartContract/ # Hardhat development environment
│ ├── contracts/ # Solidity smart contracts
│ ├── scripts/ # Deployment scripts
│ └── test/ # Contract tests
└── docs/ # Project documentation

🛠️ Installation & Setup

Prerequisites

• Node.js (v18+)
• npm or yarn
• MetaMask wallet
• Git

1. Clone Repository

git clone https://github.com/your-username/DiploChain.git
cd DiploChain

2. Smart Contract Setup

cd smartContract
npm install
npx hardhat compile

3. Frontend Setup

cd frontend
npm install
npm run dev

4. Environment Configuration

Create .env files in both frontend and smartContract directories:

smartContract/.env

PRIVATE_KEY=your_private_key_hereBLAZE_RPC_URL=https://rpc.blaze.soniclabs.com

frontend/.env.local

NEXT_PUBLIC_DIPLOMA_TOKEN_ADDRESS=0xF0bC756473b8667912E7EB0413301ceCf5c08a4ANEXT_PUBLIC_DIPLOMA_NFT_ADDRESS=0x232B40F317315A303D75A7d846c85e8330db4329NEXT_PUBLIC_CHAIN_ID=57054

🔧 Development Commands

Smart Contracts

# Compile contracts
npm run compile
# Run tests
npm run test# Deploy to testnet
npm run build
# Security analysis
npm run slither

Frontend

# Development server
npm run dev
# Build for production
npm run build
# Code linting
npm run lint
# Format code
npm run format

🔒 Security Features

Smart Contract Security

• Mythril Analysis: Automated vulnerability scanning
• Access Control: Role-based permissions
• OpenZeppelin: Battle-tested contract libraries
• Immutable Data: Blockchain-based storage

Code Quality

• ESLint: Code quality enforcement
• Prettier: Consistent code formatting
• TypeScript: Type safety
• Husky: Pre-commit hooks

🎯 Usage Scenarios

For Educational Institutions

1. Register as accredited institution
2. Mint diploma NFTs for graduates
3. Store metadata on IPFS
4. Track issued certificates

For Students

1. Connect MetaMask wallet
2. Receive diploma NFTs
3. Share verification links
4. Manage academic credentials

For Companies

1. Purchase DIPTOK tokens
2. Verify candidate diplomas
3. Pay verification fees
4. Access verification history

🧪 Testing

Contract Testing

cd smartContract
npx hardhat test

Security Analysis

# Install Mythril
pip install mythril
# Analyze contracts
myth analyze contracts/diplomaNFT.sol --solv 0.8.24
myth analyze contracts/diplomaToken.sol --solv 0.8.24

🚀 Deployment

Local Development

# Start local Hardhat node
npx hardhat node
# Deploy contracts locally
npx hardhat run scripts/deployDiploma.ts --network localhost

Testnet Deployment

# Deploy to Blaze Testnet
npx hardhat run scripts/deployDiploma.ts --network blaze

🤝 Contributing

1. Fork the repository
2. Create feature branch (git checkout -b feature/AmazingFeature)
3. Commit changes (git commit -m 'Add AmazingFeature')
4. Push to branch (git push origin feature/AmazingFeature)
5. Open Pull Request

📋 Roadmap

• Phase 1: Core NFT diploma minting
• Phase 2: Token economy implementation
• Phase 3: IPFS integration
• Phase 4: Mobile application
• Phase 5: Mainnet deployment

🏆 Team Roles

• DEV 1: Smart Contracts & Blockchain Backend
• DEV 2: Frontend & Web3 Integration
• DEV 3: Infrastructure & Security Testing

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🔗 Links

• Live Demo: DiploChain DApp
• Documentation: Project Docs
• Blaze Explorer: View Contracts

📞 Support

For support and questions:

• Create an issue on GitHub
• Contact the development team
• Join our community discussions

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Built with ❤️ using Ethereum, Next.js, and cutting-edge Web3 technologies