> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sponsor.gl/llms.txt
> Use this file to discover all available pages before exploring further.

# Wallet & chain setup

> Add Robinhood Chain (chain id 4663) to an EVM wallet and fund it with enough ETH to launch or claim.

Sponsor runs on Robinhood Chain (chain id **4663**). Any EVM wallet works. You need the network added and a little ETH on it for gas.

## Add Robinhood Chain

Open your wallet's add-network flow and enter:

| Parameter       | Value                                      |
| --------------- | ------------------------------------------ |
| Network name    | Robinhood Chain                            |
| Chain id        | **4663**                                   |
| RPC URL         | `https://rpc.mainnet.chain.robinhood.com/` |
| Currency symbol | ETH                                        |
| Block explorer  | `https://robinhoodchain.blockscout.com`    |

The RPC is public. Every balance and event in these docs can be read from it without an account or gas.

## Bridge ETH

You pay your own Robinhood Chain gas, for claiming and launching alike. The canonical bridge and partner routes are listed in [Robinhood's bridging guide](https://docs.robinhood.com/chain/bridging/).

* **Claiming:** gas is the only cost. The app suggests bridging when your wallet holds **0.0002 ETH** or less.
* **Launching:** each launch pays the **0.0005 ETH** launch fee plus any optional [dev buy](/launch/how-launching-works), plus gas.

Both numbers are canonical on [Fees & parameters](/reference/fees-and-parameters).

<Note>
  **Payouts are WETH.** Claims pay WETH (an ERC-20 transfer), not native ETH. Add the WETH token to your wallet to see the balance, and unwrap to ETH whenever you want. WETH on Robinhood Chain:

  ```
  0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73
  ```

  [View on Blockscout](https://robinhoodchain.blockscout.com/address/0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73)
</Note>

Next: [launch a coin](/getting-started/launch-a-coin), or [claim your fees](/claim/claim-your-fees) if someone has already directed fees to your handle.