ImageChain is a secure, blockchain-powered platform for storing digital images and verifying certificates using MongoDB and Hyperledger Fabric. It enables secure image storage and real-time certificate validation via a simple, responsive UI.
- 📤 Upload and store digital images securely
- 🔐 Certificate issuance and verification using Hyperledger Fabric
- 🧾 Transparent and immutable record of images and certificates
- 🧠 MongoDB used for fast and scalable off-chain storage
- 💻 User-friendly UI using HTML + TailwindCSS
| Layer | Technology |
|---|---|
| Frontend | HTML, TailwindCSS, Jinja2 |
| Backend | Python (Flask) |
| Database | MongoDB |
| Blockchain | Hyperledger Fabric |
| Tools | Docker, Docker Compose, Fabric CA |
graph TD
A[User Uploads Image] --> B[Store image & metadata in MongoDB]
B --> C[Hash image]
C --> D[Record hash in Hyperledger Fabric]
D --> E[Issue or Verify Certificate]
git clone https://github.com/your-username/imagechain.git
cd imagechainpip install -r requirements.txtEnsure MongoDB is running locally, or update your .env with the connection string.
Follow Fabric documentation:
cd fabric-samples/test-network
./network.sh up createChannel -c mychannel -ca./network.sh deployCC -ccn certcc -ccp ../chaincode/cert -ccl javascriptpython app.pyVisit http://localhost:5000 in your browser.
| Method | Route | Description |
|---|---|---|
| GET | / |
Homepage with blockchain viewer |
| POST | /upload |
Upload image |
| POST | /verify |
Verify uploaded image |
| POST | /issue-certificate |
Issue new certificate |
| GET | /verify-certificate/<cert_id> |
Verify issued certificate |
- University issuing certificates to students on blockchain
- Validating image originality and timestamp
- Tracking digital asset authenticity
- Add JWT-based authentication
- Role-based access control (Admin, Institution, User)
- IPFS fallback for optional decentralized image backup
- Add certificate QR code generation