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Address Binding
Learn how to bind your Substrate account to an EVM account. This allows you to bring ERC-20 tokens to Karura and interact with Dapps.

Video

Pre-Requisites

  • MetaMask and Substrate Wallets.
  • KAR in your Substrate Wallet and other tokens in your MetaMask wallet to pay for transaction fees.
You can learn how to create a Substrate wallet by following any of these guides. You can learn how to send KAR to your Karura wallet by following this guide.
You can learn how to create a MetaMask wallet by following this guide.

Address Binding

Note there are a few restrictions of the bind feature by design:
  • Binds can only be done between one Substrate and one MetaMask account
  • Neither account can be previously bound to another account. Additionally, binding is final - there is no unbind feature
1) Go to Bind MetaMask in the Karura App. Click Connect to MetaMask and select the account you'd like to connect. Do the same thing for your Substrate account.
2) Double check that you are binding the correct accounts because this action cannot be undone. Click Sign.
If you are having trouble connecting your MetMask, you can manually add the Karura network by opening your MetaMask wallet and going to Settings-> Networks -> Add Networks and entering the following information: Network Name: Karura
New RPC URL: https://eth-rpc-karura.aca-api.network/
Chain ID: 686
Block Explorer: https://blockscout.karura.network/
Symbol: KAR
3) Click Bind. Remember that in order to bind, you must have KAR in your Substrate account. You can learn how to send KAR to your Karura wallet by following this guide.
4) You should see that your accounts have been successfully bound!

FAQ

Can I unbind and bind to a new account?

No. Once you bind two accounts together, you cannot unbind them. If you you'd like to use a different Polkadot account or a different Ethereum account, you'll need to create two new wallets.
Do I need to keep both seed phrases?
Yes. Please keep both seed phrases. If you ever need to recover all of your funds, you will need both sets of seed phrases.
Where can I see the MetaMask address linked to my account?
If you've already completed the binding process, click on your account in the upper right hand corner and then hover over the chain icon to see the linked MetaMask address.
Why is MetaMask having trouble connecting to Karura?
If you are having trouble connecting your MetMask, you can manually add the Karura network by opening your MetaMask wallet and going to Settings-> Networks -> Add Networks and entering the following information: Network Name: Karura
New RPC URL: https://eth-rpc-karura.aca-api.network/
Chain ID: 686
Block Explorer: https://blockscout.karura.network/
Symbol: KAR
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Outline
Video
Pre-Requisites
Address Binding
FAQ