How to bridge ETH to Robinhood Chain
IN SHORT
ETH reaches Robinhood Chain through the canonical Arbitrum Orbit bridge: one depositEth()transaction to the chain’s Delayed Inbox on Ethereum. Whatever you send as msg.value is credited to the same address on Robinhood Chain (chain ID 4663) in about ten minutes.
It is fully self-custodial — one transaction you sign, no intermediary, no token approval. Going the other way is the slow direction: a canonical withdrawal carries roughly a seven-day challenge period.
The canonical deposit, step by step
- Hold ETH on Ethereum mainnet. The canonical bridge moves ETH from Ethereum L1 to Robinhood Chain. You need the ETH on mainnet first, plus a little extra for the L1 gas of the deposit transaction itself.
- Send a depositEth transaction to the Delayed Inbox. Robinhood Chain’s Delayed Inbox exposes a payable depositEth() function with no arguments. The ETH you send as msg.value is credited to the same address on Robinhood Chain. No token approval and no third party are involved.
- Wait roughly ten minutes. The deposit is picked up and credited on the L2 in about ten minutes. Nothing else is required from you; the balance appears at the same address you sent from.
- Verify the balance on chain 4663. Point a wallet or RPC client at Robinhood Chain mainnet (chain ID 4663) and check the balance. Gas on the chain is around 0.01 gwei, so a small deposit goes a long way.
Why this route is the safe default
Bridges are the most consistently exploited component in crypto, and most of that risk comes from third parties holding funds mid-transit or from token approvals that outlive the transaction. The canonical deposit has neither:
- One transaction, signed by you.
depositEth()is payable and takes no arguments. There is nothing to approve and nothing to revoke afterwards. - Same address on both sides. The credit lands at the address that sent it, so there is no recipient field to get wrong.
- No custodian.The funds move through the chain’s own rollup contracts, not a bridge operator’s wallet.
Deposits are fast, withdrawals are not
| Direction | Route | Time | Trust |
|---|---|---|---|
| Ethereum → Robinhood Chain | Canonical Delayed Inbox deposit | ~10 minutes | Self-custodial |
| Robinhood Chain → Ethereum | Canonical rollup withdrawal | ~7 days (challenge period) | Self-custodial |
| Robinhood Chain → Ethereum | Third-party liquidity route | Seconds to minutes | Trusts a third party, charges a fee |
The seven-day exit is not a flaw, it is how optimistic rollups establish finality — the challenge period is the security. It does mean you should not bridge in more than you intend to use on the chain, unless you are comfortable waiting or paying a third party to skip the wait.
How much to bring
Gas on Robinhood Chain runs around 0.01 gwei, so transaction costs are close to a rounding error. What you actually need to size is your own activity: the Pons launch fee if you are launching, plus whatever you intend to buy of your own token. Budget for the position, not the gas.
If you are only rehearsing, you do not need to bridge at all — the testnet (chain ID 46630) has a faucet and runs the identical flow free.
Frequently asked questions
How long does bridging to Robinhood Chain take?
A canonical deposit from Ethereum to Robinhood Chain credits in roughly ten minutes. Withdrawing in the other direction is very different: an Arbitrum-style withdrawal carries a challenge period of about seven days unless you use a third-party route that fronts the liquidity.
Is bridging to Robinhood Chain self-custodial?
The canonical deposit is. It is a single transaction you sign yourself to the chain’s Delayed Inbox, with no intermediary holding your funds and no token approval to grant. The ETH is credited to the same address you sent it from.
What does it cost to bridge to Robinhood Chain?
You pay Ethereum L1 gas for the deposit transaction, which is the dominant cost and varies with mainnet conditions. There is no bridge fee on the canonical route itself, and gas on Robinhood Chain afterwards is negligible at around 0.01 gwei.
Can you withdraw from Robinhood Chain back to Ethereum?
Yes, but the canonical withdrawal is an Arbitrum-style exit with roughly a seven-day challenge period before funds are claimable on L1. Third-party routes can settle in seconds or minutes instead, by fronting liquidity on the destination and charging for it.
Next
With ETH on the chain, the next step is launching a token. For background on the network itself, see Robinhood Chain, and for the launchpad you will be using, Pons.