🦉 Ethereum Validator Depositor for Hoodi Testnet

This script automates Ethereum validator deposits to the Hoodi testnet Deposit Contract. It uses EIP-1559 transactions, dynamically adjusts gas pricing, and tracks successful deposits to avoid duplication.

🔧 Features

• Connects to an Ethereum RPC endpoint (e.g., Hoodi testnet)
• Submits deposit(bytes, bytes, bytes, bytes32) transactions
• Dynamically adjusts gas pricing using eth_feeHistory
• Skips previously successful deposits
• Tracks successful pubkeys in successful_deposits.json
• Retries failed transactions with exponential backoff

📦 Dependencies

Minimal external dependencies:

web3>=7.0.0  
python-dotenv>=1.0.0

Install with:

pip install -r requirements.txt

🛠️ Environment Variables

Create a .env file in the root directory with the following variables:

RPC_URL=https://your-hoodi-endpoint  
PRIVATE_KEY=0xyourprivatekey  
DEPOSIT_DATA_FILE=./deposit_data.json

⚠️ Never commit your private key to GitHub or any public repository.

📁 Input Format

The deposit_data.json file must contain a list of deposit entries:

[
  {
    "pubkey": "abcd...",
    "withdrawal_credentials": "1234...",
    "signature": "dead...",
    "deposit_data_root": "beef..."
  }
]

Each field must be a valid hex string without the 0x prefix.

🚀 Running the Script

Activate your virtual environment (if applicable), then run:

python deposit.py

The script will:

• Connect to the Ethereum node
• Check your wallet balance
• Process as many 32 ETH deposits as possible
• Skip pubkeys that were already deposited successfully

✅ Output

• Console output shows transaction status, gas price, and confirmations
• successful_deposits.json stores completed pubkeys to prevent duplicates

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Feel free to contribute or open an issue if you have questions or suggestions.

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