CertChain - Blockchain Certificate Management System

Overview

CertChain is a decentralized certificate management system that leverages blockchain technology to provide secure, verifiable, and tamper-proof digital certificates. The system ensures the authenticity and integrity of certificates through smart contracts and blockchain verification.

Features

• Secure certificate issuance and verification
• Blockchain-based certificate storage
• Smart contract integration
• User authentication and authorization
• Admin dashboard for certificate management
• Password reset functionality via https://resetpassword.karadurbanbank.com/

Tech Stack

• Frontend: React.js with TypeScript
• Backend: Node.js with Express
• Database: MongoDB
• Blockchain: Ethereum
• Smart Contracts: Solidity
• Authentication: JWT

Prerequisites

• Node.js (v14 or higher)
• MongoDB
• MetaMask or other Web3 wallet
• npm or yarn package manager

Installation

1. Clone the repository:

git clone [repository-url]
cd CertChain

2. Install dependencies:

# Install backend dependencies
cd backend
npm install

# Install frontend dependencies
npm install

3. Configure environment variables:

   • Create .env file in the backend directory
   • Add necessary environment variables (see .env.example)

4. Start the development servers:

# Start backend server
cd backend
npm run dev

# Start frontend server
cd frontend
npm start

Project Structure

CertChain/
├── backend/
│   ├── controllers/
│   ├── models/
│   ├── routes/
│   ├── middleware/
│   ├── utils/
│   └── config/
├── frontend/
│   ├── src/
│   │   ├── components/
│   │   ├── pages/
│   │   ├── contexts/
│   │   ├── services/
│   │   └── utils/
│   └── public/
└── smart-contracts/
    └── contracts/

API Endpoints

Authentication

• POST /api/auth/signup - User registration
• POST /api/auth/login - User login
• POST /api/auth/forgot-password - Request password reset
• POST /api/auth/reset-password - Reset password

Certificates

• GET /api/certificates - Get all certificates
• POST /api/certificates - Issue new certificate
• GET /api/certificates/:id - Get certificate by ID
• PUT /api/certificates/:id - Update certificate
• DELETE /api/certificates/:id - Delete certificate

Smart Contracts

The system uses smart contracts for:

• Certificate issuance
• Certificate verification
• Ownership management
• Access control

Security Features

• JWT-based authentication
• Password hashing
• Role-based access control
• Blockchain verification
• Secure password reset flow

Acknowledgments

• Ethereum Foundation
• OpenZeppelin
• React.js community
• Node.js community