OpenSea is now compatible with the Arbitrum chain Arbitrum One, which features rapid and inexpensive transactions.
If you’re buying an NFT on Arbitrum, you’ll need to add Arbitrum to your wallet and bridge your ETH to Arbi ETH.
Let’s dive in!
Adding Arbitrum to your wallet
Many wallets will automatically prompt you to switch networks. If your wallet doesn’t support this, or you’d like to add the Arbitrum network to your wallet manually, you can follow these steps:
1. Click on your browser extension for MetaMask.
2. From the network drop-down menu, click Add network.
3. This will open up a new window. On the bottom, select Add a network manually.
4. Fill in the network information manually, matching the screenshot below.
- Network Name: Arbitrum One
- New RPC URL: https://arb1.arbitrum.io/rpc
- Chain ID: 42161
- Currency Symbol: ETH
- Block Explorer URL: https://arbiscan.io/
5. Click Save.
6. You should now see Arbitrum One added to your networks.
Bridging ETH onto Arbitrum
In order to spend ETH on Arbitrum, you’ll need to bridge ETH from the Ethereum network to the Arbitrum One network.
1. On OpenSea, click your Wallet balance in the upper right corner.
2. Click the balance dropdown and select Bridge to Arbitrum. If you don’t see this option, switch your wallet to Ethereum Mainnet.
3. Input the amount of ETH you want to convert to Arbi ETH and click Convert tokens. With this action, you'll be making a direct call to the Arbitrum bridge smart contract to perform the conversion.
4. You'll be prompted to sign a transaction with your crypto wallet and pay a gas fee.
5. Once the transaction is processed, you’ll see a Transaction Complete confirmation message.
After this, you should be all set to purchase NFTs using OpenSea!