MediChain: Blockchain-Based Supply Chain Management System for Pharmaceutical

Objective:

To develop a transparent, secure, and tamper-proof blockchain system that tracks pharmaceutical products from manufacturer to consumer, ensuring authenticity and reducing counterfeit drugs.

Key Features:

End-to-End Traceability: Tracks every step of the drug’s journey.

Immutable Records: All product movements are stored on the blockchain.

Smart Contracts for Verification: Automates quality checks, compliance, and handovers.

Real-Time Product Scanning: QR/NFC-based product verification by consumers and stakeholders.

Temperature & Condition Logging: IoT integration for tracking environmental conditions.

Multi-Stakeholder Access: Different roles for manufacturers, distributors, regulators, and pharmacies.

Technologies Used:

Blockchain Platform (Hyperledger Fabric / Ethereum): For decentralized ledger of transactions.

Smart Contracts (Solidity / Chaincode): Enforce rules for product handling and transfer.

IoT Sensors & Devices: Capture and transmit real-time temperature, humidity, and location.

QR Code / RFID / NFC: For tracking and verifying products.

Web3.js / Hyperledger SDK: For blockchain interaction.

React.js / Angular: For dashboard and user interfaces.

Node.js / Express: For backend services and APIs.

IPFS / Cloud Storage: For storing related documents and logs securely.

How It Works:

Product Registration: Manufacturer creates a digital identity for each batch on the blockchain.

Tracking & Handover: As drugs move through the supply chain (wholesaler → distributor → pharmacy), each transfer is logged immutably.

Smart Contracts Execution: Validate that proper conditions (e.g., cold storage) are met before each handoff.

IoT Integration: Monitors temperature and location data in real-time and logs it on-chain.

Consumer Verification: Customers scan QR/NFC to verify authenticity and view full supply chain history.

Audit & Compliance: Regulators access immutable logs for inspections or recall processes.

Benefits:

Counterfeit Prevention: Every product’s journey is recorded, deterring tampering or fakes.

Transparency: All stakeholders can view product origin and handling.

Real-Time Monitoring: Ensures safety and regulatory compliance.

Automation: Reduces paperwork and manual tracking.

Trust & Accountability: Increases consumer and partner confidence in drug authenticity.