🏥 MediChain – AI + Blockchain Powered Prescription Verification

Secure. Transparent. Fraud-proof.
MediChain is a prescription verification system that ensures the authenticity of medical prescriptions using AI and blockchain.
It helps prevent medical fraud, promotes trust in healthcare, and makes prescription validation accessible — even in remote areas.

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🎯 Problem Statement

Prescription fraud and tampering are major issues in healthcare, leading to:

• Misuse of restricted medicines
• Black market circulation
• Forged doctor signatures and details
• Difficulty in verifying authenticity, especially in rural areas

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💡 Our Solution

MediChain combines AI-based prescription data extraction with blockchain storage to create a tamper-proof verification system.

1. Upload Prescription → Doctor or patient uploads a typed prescription.
2. AI Extraction → Key details (doctor ID, medicine name, dosage, date) are parsed.
3. Blockchain Storage → Prescription hash & metadata are stored on a public blockchain.
4. QR Code Verification → Each verified prescription gets a QR code for instant authentication.
5. Secure Lookup → Pharmacists or patients scan the QR code to validate authenticity.

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🎯 Key Features

• Digital Prescription Generation – Doctors can issue secure, typed prescriptions.
• Unique QR Code for Each Prescription – Encodes verification details for fast scanning.
• Instant Verification – Pharmacies can scan and verify prescriptions in real time.
• Secure Doctor Database – Only registered and verified doctors can issue prescriptions.
• Blockchain-Ready Architecture – Option to store verification records on blockchain for immutability and audit trail.
• Offline-Friendly – Verification works even with minimal internet connectivity (QR scan + local database check).
• User-Friendly Web App – Simple UI for doctors, pharmacies, and admins.

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🛠️ Tech Stack

Frontend: Typescript, Tailwind CSS, qrcode.react
Backend: Node.js, Express.js
Database: MongoDB
Blockchain: Solidity, Polygon Mumbai Testnet, Ethers.js, MetaMask
AI Integration: OpenAI GPT-4o (for extracting key data from typed prescriptions)

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📂 Project Structure

medichain/
│
├── backend/        # Backend server & APIs
├── frontend/       # React frontend
├── contracts/      # Smart contracts
├── docs/           # Documentation & diagrams
└── README.md

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📌 Demo Flow

1. Doctor Login → Doctor enters prescription details.
2. AI Parsing → GPT-4o extracts and formats key data.
3. Blockchain Storage → Prescription hash stored on Polygon Mumbai.
4. QR Code Generation → QR linked to verification API.
5. Verification → Anyone can scan QR to check blockchain authenticity.

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🌟 Future Scope

• OCR for handwritten prescriptions
• Integrate with national e-health systems
• Add analytics dashboard for regulator insights (prescribing patterns, anomalies)
• A mobile app for rural pharmacists with offline sync

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👥 Built by Team Void

• @ssid18 – AI & Blockchain Integration
• @Dakshx07 – Frontend Development & UI
• @lakshitsoni26 – Backend & API Development

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