ZeroData

A decentralized data-sharing network powered by zero-knowledge proofs. ZeroData allows users to prove the validity of their data without exposing the raw information, enabling secure and private data transactions in a decentralized ecosystem.

Features

• Privacy-Preserving Data Sharing: Use zero-knowledge proofs to verify data without revealing it
• Decentralized Storage: Data encrypted and stored on IPFS/Arweave
• Smart Contract Integration: Ethereum-based access control and payment settlement
• DID Identity Management: Decentralized identity for secure authentication
• Data Trading Market: Transparent data transactions with ERC-20 token payments
• DAO Governance: Community-driven decision making

Architecture

Core Components

1. Blockchain Layer: Ethereum L2 (StarkNet/zkSync) for cost efficiency
2. Cryptography Layer: zk-SNARKs/zk-STARKs for zero-knowledge proofs
3. Storage Layer: IPFS/Arweave for encrypted data storage
4. Client SDK: Cross-language SDKs for easy integration

Smart Contracts

• DataRegistry: Manages data metadata and proofs
• AccessControl: Handles permission management
• PaymentSettlement: Processes data transactions

Getting Started

Prerequisites

• Node.js >= 16.0.0
• Git
• Ethereum wallet (MetaMask recommended)

Installation

# Clone the repository
git clone https://github.com/jeanettaskafidas/ZeroData.git
cd ZeroData

# Install dependencies
npm install

# Set up environment variables
cp .env.example .env
# Edit .env with your configuration

# Start the development server
npm run dev

Environment Variables

Create a .env file with the following variables:

PORT=3000
NODE_ENV=development
ETHEREUM_RPC_URL=https://goerli.infura.io/v3/YOUR_PROJECT_ID
IPFS_API_URL=http://localhost:5001
DATABASE_URL=mongodb://localhost:27017/zerodata
REDIS_URL=redis://localhost:6379
JWT_SECRET=your-jwt-secret

Usage

Upload Data

const { ZeroDataClient } = require('zerodata-sdk');

const client = new ZeroDataClient({
  rpcUrl: process.env.ETHEREUM_RPC_URL,
  privateKey: process.env.PRIVATE_KEY
});

// Upload encrypted data
const result = await client.uploadData({
  data: "sensitive information",
  accessPolicy: "public",
  price: "1000000000000000000" // 1 token in wei
});

Verify Data Access

// Generate zero-knowledge proof
const proof = await client.generateProof({
  dataHash: result.dataHash,
  accessor: "0x...",
  conditions: ["age > 18", "verified == true"]
});

// Verify proof without revealing data
const isValid = await client.verifyProof(proof);

Development

Project Structure

src/
├── contracts/          # Smart contracts
├── circuits/           # Zero-knowledge proof circuits
├── services/           # Core business logic
├── utils/              # Utility functions
├── middleware/         # Express middleware
├── routes/             # API routes
└── tests/              # Test files

Running Tests

npm test

Building

npm run build

Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'feat: add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Tokenomics

The ZeroData ecosystem uses a native ERC-20 token for:

• Data Transactions: Payment for data access
• Node Incentives: Rewards for storage and validation nodes
• Governance: DAO voting rights

Incentive Structure

• Data Providers: Earn tokens for sharing valuable data
• Validators: Receive rewards for proof computation services
• Storage Nodes: Get stable income for long-term data storage

Security

• All smart contracts undergo third-party security audits
• GDPR/CCPA compliant data handling
• Data abuse reporting and arbitration mechanisms
• Regular security updates and patches

Roadmap

• [x] Phase 1 (MVP): Data upload, encryption, and ZKP verification
• [ ] Phase 2: Data trading market and incentive mechanisms
• [ ] Phase 3: DID integration and multi-chain interoperability
• [ ] Phase 4: DAO governance and developer ecosystem

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

• Documentation: docs.zerodata.io
• Discord: discord.gg/zerodata
• Twitter: @ZeroDataProtocol

Acknowledgments

• Circom for zero-knowledge proof circuits
• IPFS for decentralized storage
• Ethereum Foundation for blockchain infrastructure