# Withdrawing from Optimistic Ethereum
Where is my money?
If you withdrew using the Optimism gateway and are not sure what is happening with your withdrawal, search for the transaction hash here (opens new window), the withdrawal might still be in the validity challenge period. Alternatively, you might just need to claim the withdrawal.
When you transfer assets to a centralized exchange you send it to an address provided by that centralized exchange. By default, this is an L1 address and the exchange does not look at this address in Optimistic Ethereum. As a result, assets transferred directly to a centralized exchange that doesn't support Optimistic Ethereum are irrevocably lost. Don't do it.
When a centralized exchange supports Optimistic Ethereum we will publish that fact.
# Which Assets?
At writing there are two ways to withdraw ETH:
Hop exchange (opens new window), which is quick and tells you the cost upfront.
# ERC-20 Tokens
The Optimism Gateway (opens new window). We have a list of supported ERC-20 tokens (opens new window), but you are not limited to them, you can select any token that exists on both L1 and L2 (opens new window).
Third-party bridges (opens new window). Those bridges are usually cheaper and faster than our main gateway, but have a more limited list of supported tokens. The way this works is that the bridge loans you the relevant asset on L1 (mainnet).
When enough of an asset has accumulated, the bridge sends all of those tokens to L1 in one gateway transaction. This way:
- You don't have to wait the normal challenge verification period. The bridge takes the risk that the block with the transaction (or a prior one) is invalid. Bridges run their own verification so it's not a big risk for them.
- The cost of the merkle proof required for a withdrawal transaction is spread over a larger pool of tokens, so the relative cost of the withdrawal is smaller.
# Withdrawing through the Optimism Gateway
Withdrawals through the Optimism Gateway is a multi-step process:
Initiate the withdrawal on Optimistic Ethereum
Wait the verification challenge period, which is seven days from the time the transaction is published on L1.
Normally transactions are published on L1 quickly, but in the case of an outage it might take longer, in which case it will take longer until you can claim your withdrawal.
# Initiate the withdrawal
Click CONNECT, select your wallet type, and approve the connection in the wallet itself if asked.
Make sure the form is correct:
Withdraw is selected
From OPTIMISTIC ETHEREUM
The asset is the one you with to withdraw.
Set an amount that is available in your account. Click MAX if you want to withdraw your entire balance.
Click WITHDRAW again to confirm.
Confirm the transaction in the wallet.
# While waiting
There are several ways to see if your withdrawal is ready to be claimed:
- Browse to the gateway (opens new window) and click your account. This shows you the list of recent withdrawals and their status:
Click a specific withdrawal to see exactly when it will become available.
Search the transaction hash on the Etherscan message relayer (opens new window). If the withdrawal is ready to be claimed, the Execute button will be enabled.
You can search for the transaction hash on Optimistic Etherscan (opens new window). Click the L1 State Root Submission Tx.
The verification challenge period starts when that transaction is confirmed:
# Claim the withdrawal
Once the challenge period is over, the status in the gateway changes to Ready to claim!. Click the transaction.
Click CLAIM WITHDRAWAL, wait for the transaction to be created, and approve it in your wallet.