Wormhole Bridge

Information for how to use the multi-chain Wormhole Bridge

The Wormhole network gives users the ability to transfer assets across many top-tier ecosystems including Karura, Ethereum, Avalanche, Solana, Binance Smart Chain and many others. You can learn more about Wormhole here.

Pre-Requisites

• Bound MetaMask and Substrate wallets. You can learn how to do this by following this guide.

• KAR in your Substrate Wallet and other tokens in your MetaMask wallet to pay for transaction fees.

Bridging

1) Go to the Wormhole Interface. Select the chains you would like to bridge between. Click the Connect button to connect the wallet that has your funds on the Source chain.

2) Click Select a Token.

3) Use the dropdown to select the token you'd like to bridge. Keep in mind that sometimes all of your token balances may not automatically populate. In that case, you can search the name or paste the token address in the search bar.

4) Enter the amount you'd like to transfer and click Next.

5) Click Connectto connect to the wallet you'll be using on the target chain.

6) You'll be presented with how you'd like to pay for fees on the target chain. For certain tokens, Karura will pay those fees in which case you'll see that box enabled. If that box is not enabled, you'll have to pay the fees in Manual Payment. Click Next.

7) Click Approve.

8) Click Transfer.

9) Click Confirm.

10) Click Redeem.

11) Congratulations, you've successfully bridged your tokens. Click Add to MetaMask to see the tokens in your wallet.

If you believe you have successfully bridged your tokens, but you can't see them in your MetaMask, please:

1. Open your MetaMask

2. Go to the Assets page and click Import Tokens at the bottom. Paste in the token contract address. The rest of the information should auto populate.

FAQ

My tokens are stuck in the bridge. What do I do?

Go to the Wormhole Interface and click on Redeem in the upper right hand corner. Select the Source chain where you initiated the transaction, connect your wallet and paste the Source Tx. If you've done it correctly, the Recover button should appear and you can proceed with your redeeming your tokens off the bridge.

Why can't I find my USDC tokens in my MetaMask wallet when I'm connected to Karura?

You may need to add the USDC contract address to MetaMask. To do this go to Assets -> Import tokens and then paste in the contract address of 0x1f3a10587a20114ea25ba1b388ee2dd4a337ce27.