# Tutorial: Bridge ETH between Arbitrum and Base

**Published by:** [okok.network](https://paragraph.com/@okok-network/)
**Published on:** 2023-07-23
**URL:** https://paragraph.com/@okok-network/tutorial-bridge-eth-between-arbitrum-and-base

## Content

OverviewIn this turorial, we assume you want to bridge ETH from Arbitrum to Base mainnet. This method also apply for bridging from Base mainnet to Arbitrum. Overall, it includes those four steps:select source chainconnect walletdeposit fundcheck fund in target chainStep 1 - Select source chainWhen you open https://okok.network/#/bridge, in the left top corner, you can select the source blockchain where your fund located in. For example, currently your ETH is in Arbitrum, you want to bridge some ETH to Base, you should select Arbitrum as source chain. After you selected Arbitrum, OKOK network will assume you want to bridge ETH to Base network.Step 2 - Connect walletAdding a walletIf you do not have a wallet yet, you can use MetaMask: https://metamask.io/download.htmlConnecting your walletAfter you have a wallet, you can connect your wallet by pressing the "Connect Wallet" button on the OKOK network bridge page: https://okok.network/#/bridgeIf you see the message below, click on "Add Arbitrum" or "Add Base" to add the Arbitrum / Base network to your wallet.Alternatively, you can manually add the Arbitrum network: https://arbitrum.io/bridge-tutorial/.Step 3 - Deposit fundAfter you successully connect wallet, now you can deposit ETH to the transparent contract:If the deposit is successful, you will receive a prompt similar to the following：We strongly recommend that you do not deposit too much money at once, because the Base network is still in its early stages and may have bugsStep 4 - Check fund in target chainAfter the deposit is successful, you can now check whether fund has reach your target chain.Backup RPC URLsSince OKOK Network is a decentralized application, querying of data and submitting of transactions go through an RPC URL. There may be times when the RPC URL is not as responsive as it should be, during these times you may notice data being slow to load or not loading on your page. It is also possible to hit the rate limit with the public Arbitrum RPC URL (https://arb1.arbitrum.io/rpc), which would result in 429 errors. To continue using the exchange during these times you can use a backup URL from Alchemy, Ankr or QuickNode, switch the RPC URL in the network settings of your wallet and the page should load faster after. For a list of RPC URLs and their statuses: https://chainlist.org/.Steps to change the RPC URL in MetaMaskClick on the MetaMask icon, then click on the three dot icon and select Expand ViewClick on your account icon on the top right and select SettingsClick on NetworksKey in the New RPC URLClick Save

## Publication Information

- [okok.network](https://paragraph.com/@okok-network/): Publication homepage
- [All Posts](https://paragraph.com/@okok-network/): More posts from this publication
- [RSS Feed](https://api.paragraph.com/blogs/rss/@okok-network): Subscribe to updates
- [Twitter](https://twitter.com/okoknetwork): Follow on Twitter