🍇Bridge ETH/USDC between Arbitrum and ZKFair

Low fee, fast speed, high safety

We strongly recommend that you do not deposit too much money at once, because the ZKFair network is still in its early stages and may have bugs

1) USDC is used as gas token in ZKFair network, to play in ZKFair, so you must bridge some USDC to ZKFair;

2) When deposit from Arbitrum One to ZKFair, the USDC used in OKOK Network is USDC.e(0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8)

If the USDC you have is another version USDC, you can swap it into USDC.e in Uniswap easily.

Overview

In this turorial, we assume you want to bridge ETH/USDC from Arbitrum one to ZKFair mainnet. This method also apply for bridging from ZKFair mainnet to Arbitrum one. Overall, it includes those four steps:

1. select source chain

2. connect wallet

3. deposit fund

4. check fund in target chain

Step 1 - Select source chain

When you open https://zkfair.okok.network/ in the right 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 ZKFair, you should select Arbitrum as source chain. After you selected Arbitrum, OKOK network will assume you want to bridge ETH to ZKFair network.

Step 2 - Connect wallet

Adding a wallet(optional)

If you do not have a wallet yet, you can use MetaMask: https://metamask.io/download.html

Connecting your wallet

After you have a wallet, you can connect your wallet by pressing the "Connect Wallet" button on the OKOK network bridge page: https://zkfair.okok.network/

If you see the message below, click on "Add Arbitrum" or "Add ZKFair" to add the Arbitrum / ZKFair network to your wallet.

Alternatively, you can manually add the Arbitrum network: https://chainlist.org/chain/42161

Step 3 - Deposit fund

After you successully connect wallet, now you can deposit ETH/USDC to the transparent contract:

If the deposit is successful, you will receive a prompt similar to the following：

Step 4 - Check fund in target chain

After the deposit is successful, you can now check whether fund has reach your target chain.

Backup RPC URLs

Since 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 MetaMask

• Click on the MetaMask icon, then click on the three dot icon and select Expand View

• Click on your account icon on the top right and select Settings

• Click on Networks

• Key in the New RPC URL

• Click Save

About ZKFair chain:

ZKFair is the first community ZK-L2 based on Polygon CDK and Celestia DA, powered by Lumoz, a ZK-RaaS provider. ZKFair utilizes stablecoin USDC as the gas token. ZKFair ensures 100% EVM compatibility, exceptional performance, minimal fees, and robust security.