DataSov combines Corda for privacy-preserving Digital Identity (DID) and Solana for high-throughput data ownership trading. This repo contains a minimal end-to-end demo environment and component implementations.

Run the web demo with a local API and frontend:

1. Start the Integration Layer (demo Simple API)

cd integration-layer
npm install
npm run build
node dist/simple-api.js

2. Start the Frontend

cd ../frontend
npm install
npm start

3. Open the app

• Frontend: http://localhost:3000
• API: http://localhost:3001

4. Demo credentials

• Email: [email protected]
• Password: password123

Note: The frontend proxies API requests to http://localhost:3001 (see frontend/package.json proxy field). Ensure the API is running before logging in.

• corda-component/: Kotlin contracts, clients, and workflows for DID and access control on Corda.
• solana-component/: Anchor-based program and TypeScript SDK for data marketplace operations on Solana.
• integration-layer/: TypeScript services that bridge Corda and Solana. Includes a production-like API and a demo simple-api for local runs.
• frontend/: React (CRA + Tailwind) dashboard for identities, marketplace, analytics.
• DataSovMobile/: Lightweight Expo app (mobile UI demo). Also runnable on web via Expo.

Uses the integration-layer/dist/simple-api.js plus the frontend. This is what the integration tests target.

# Terminal A (API)
cd integration-layer && npm run build && node dist/simple-api.js

# Terminal B (Frontend)
cd frontend && npm start

# Optional: Run integration smoke tests
cd .. && node integration-test.js

Start real networks first, then use the full Integration Layer API (dist/index.js). This requires local Corda and Solana environments.

# Corda (example)
cd corda-component
./gradlew deployNodes
./build/nodes/runnodes

# Solana (example)
solana-test-validator
cd solana-component
anchor build
anchor deploy --provider.cluster localnet

# Integration Layer (full API)
cd ../integration-layer
npm run build
node dist/index.js

# Frontend
cd ../frontend
npm start

If you see Cannot find module '@/utils/Logger' when running dist/index.js, use the demo simple-api.js for local runs, or configure TS path aliases resolution at runtime.

From the repo root:

node integration-test.js

This runs a set of HTTP checks against the API and validates frontend availability. Ensure both API and frontend are running. A passing run shows 12/12 tests.

1. Corda Component: privacy-preserving DID

• Identity Registration (KYC-friendly)
• Permissioned Access Control

2. Solana Component: Data Marketplace

• Tokenized data ownership (NFT-like)
• Listing, purchase, fee distribution

3. Integration Layer

• Cross-chain bridge (proof validation, state sync)
• REST API and health/status endpoints

• Frontend shows proxy errors (ECONNREFUSED): Start the API at http://localhost:3001.
• dist/index.js cannot resolve @/... imports: use node dist/simple-api.js for demo, or add runtime alias resolution (e.g., tsconfig-paths), or build without path aliases.
• Port conflicts: change frontend port with CRA env vars, or API PORT in integration-layer/env.example.

cd DataSovMobile
npm install
npm run web    # run with Expo on web

This is a lightweight UI demo using mock data.

• Trust + Privacy (Corda) meets Throughput + Openness (Solana).
• A single integrated user experience with strong identity guarantees and efficient market operations.