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Project Checklist

✅ Complete Implementation Checklist

Core Components

  • Chaincode (Smart Contract)

    • chaincode/hash-chaincode/package.json
    • chaincode/hash-chaincode/index.js
    • chaincode/hash-chaincode/lib/chaincode.js
    • Functions: recordFile, verifyFile, fileExists, getAllFiles

  • Backend API

    • backend/package.json
    • backend/src/app.js - Main Express application
    • backend/src/fabricClient.js - Hyperledger Fabric integration
    • backend/src/minioClient.js - MinIO object storage integration
    • backend/src/utils.js - Utility functions (hashing, formatting)

  • Configuration

    • .env.example - Environment variables template
    • backend/.env - Default environment configuration
    • .gitignore - Git ignore rules
    • docker-compose.yml - MinIO container setup

API Endpoints

  • GET /health - Health check
  • POST /upload - Upload file and record on blockchain
  • GET /verify/:fileID - Verify file integrity
  • GET /files - List all files
  • GET /file/:fileID - Get file metadata

Testing & Scripts

  • tests/tamper-test.sh - Tamper detection test
  • tests/api-test.sh - API endpoint tests
  • backend/scripts/benchmark.sh - Performance benchmarking
  • backend/scripts/enrollUser.js - User enrollment script
  • Sample test files in tests/sample-files/

Documentation

  • README.md - Main project documentation
  • SETUP.md - Detailed setup instructions
  • fabric/README-FABRIC.md - Fabric network setup
  • docs/evaluation-plan.md - Testing and evaluation methodology
  • hyperledger_fabric_min_io_prototype_readme.md - Original specification

Helper Scripts

  • start.sh - Quick start script
  • package.json - Root package.json with convenience scripts

🚀 Setup Steps

1. Prerequisites Installed

  • Docker & Docker Compose
  • Node.js v18+
  • Git
  • cURL (for testing)
  • (Optional) jq for JSON parsing

2. MinIO Setup

3. Hyperledger Fabric Setup

  • Downloaded fabric-samples repository
  • Downloaded Fabric binaries and Docker images
  • Test network started (./network.sh up createChannel)
  • Peer and orderer containers running
  • CA containers running

4. Chaincode Deployment

  • Chaincode dependencies installed (cd chaincode/hash-chaincode && npm install)
  • Chaincode deployed to test network (./network.sh deployCC)
  • Chaincode container running (dev-peer*)

5. Backend Configuration

  • Backend dependencies installed (cd backend && npm install)
  • .env file created and configured
  • Connection profile copied from test-network
  • User identity enrolled (node scripts/enrollUser.js)
  • Wallet directory created with appUser identity

6. Testing

  • Backend server starts successfully (npm start)
  • Health endpoint responds (curl http://localhost:3000/health)
  • File upload works
  • File verification works
  • Tamper detection works
  • All API tests pass

🧪 Testing Checklist

Functional Tests

  • Upload a small file (< 1KB)
  • Upload a medium file (1-10MB)
  • Upload a large file (> 10MB)
  • Verify file integrity (should pass)
  • Tamper with file and verify (should fail)
  • List all files
  • Get specific file metadata

Performance Tests

  • Measure upload latency (1KB, 10KB, 100KB, 1MB, 10MB)
  • Measure verify latency
  • Test with 10 concurrent users
  • Test with 50 concurrent users
  • Test with 100 concurrent users
  • Record throughput (TPS)

Security Tests

  • Tamper detection works 100%
  • Blockchain records are immutable
  • Hash mismatches are detected
  • Audit trail is maintained

Scalability Tests

  • System handles multiple files
  • Storage overhead is reasonable
  • Database growth is predictable
  • System recovers from failures

🔮 Future Enhancements

Short Term

  • Add API authentication (JWT tokens)
  • Implement file deletion
  • Add file versioning
  • Improve error messages
  • Add request validation
  • Add rate limiting

Medium Term

  • Multi-organization support
  • Client-side encryption
  • File access control (permissions)
  • Web UI for file management
  • Automated backup and recovery
  • Advanced monitoring and alerting

Long Term

  • Integration with public blockchain
  • Decentralized storage (IPFS)
  • Smart contract upgrades
  • Compliance reporting
  • Enterprise integration
  • Production deployment guide

📞 Support & Resources

Official Documentation

Community

Troubleshooting

  • Check SETUP.md for common issues
  • Review logs in docker logs <container>
  • Verify all prerequisites are installed
  • Ensure all containers are running
  • Check network connectivity

✨ Success Criteria

The prototype is considered successful if:

  1. ✅ All core functionality works:

    • File upload
    • Hash recording on blockchain
    • File verification
    • Tamper detection

  2. ✅ Performance is acceptable:

    • Upload latency < 5 seconds
    • Verify latency < 1 second
    • Handles 50+ concurrent users

  3. ✅ Security is demonstrated:

    • 100% tamper detection rate
    • Immutable blockchain records
    • Cryptographic integrity

  4. ✅ Documentation is complete:

    • Setup instructions work
    • API is documented
    • Tests are reproducible

  5. ✅ Evaluation is thorough:

    • Performance metrics collected
    • Security validated
    • Scalability tested
    • Results analyzed

Status: ✅ COMPLETE - All components implemented and ready for testing!

Last Updated: October 7, 2025