💸 Multi-Chain Token Transfer (ETH / ERC-20 / L2 networks)

A simple Streamlit interface to send tokens across Ethereum L1 and L2 networks (Base, Linea, Arbitrum, Optimism), with support for both Mainnet and Testnet (Sepolia)

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🚀 Features

✅ Select Mainnet or Testnet
✅ Supports ETH native transfers and ERC-20 tokens ✅ Add custom ERC-20 tokens manually ✅ Check your balance before sending ✅ Block explorer link after transaction
✅ Private key is hidden for safety

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⚙️ Installation

git clone https://github.com/<your_repo>/multi-chain-transfer.git
cd multi-chain-transfer
pip install streamlit web3

▶️ Usage

streamlit run transfer_multi_network_token.py

Then open the local link displayed in your terminal (http://localhost:8501).
🔧 Supported Networks
Layer	Network	RPC Example	Explorer
L1	Ethereum Mainnet
L1	Ethereum Testnet	
L2	Base	
L2	Linea	
L2	Arbitrum	
L2	Optimism	

    🧠 Replace YOUR_INFURA_KEY with your own Infura project key, or use a public RPC endpoint.

🧩 How to Use

    Select network layer and token type

    Enter your private key (hidden input)

    Click 💰 Check Balance to verify available funds

    Enter destination address and amount

    Click 🚀 Send to broadcast the transaction

    A link to the transaction explorer will appear on success

➕ Add Custom ERC-20 Tokens

You can easily send any custom ERC-20 token by:

    Choosing “Custom ERC-20” mode by entering:

Token name

Contract address

Decimals

    The app will register your token and use it for balance check & transfer.

🔒 Security Notes

    Never share your private key — this app is for local or educational use only

    Always test on Sepolia or other testnets before using real funds


👨‍💻 Author
Made with love by dnapog.base.eth