Users can download the Core browser extension to access BTC bridging. Note that BTC bridging is ONLY currently available through the Core Wallet Extension. BTC bridging with Avalanche Bridge is not supported with Metamask or any other wallet. This is because the Core extension was custom-built to support Bitcoin and the Avalanche Bridge and to handle the technical problems of linking Bitcoin and EVM chains within a wallet. See here for more details on how to bridge BTC. Do not attempt to use any wallet other than the Core extension for BTC bridging – you may lose all your funds.

What is the Core extension?

Core Wallet Extension is a new alternative to other crypto wallet extensions, such as the Metamask Wallet Extension. Users can use the Core extension to bridge BTC to Avalanche C-Chain or ERC20 tokens to Avalanche C-Chain and back.

To learn more about the BTC bridge, please read the BTC bridge FAQ.

For a more in-depth read on how the Avalanche Bridge works, please read the following articles.


For any additional questions, please visit our knowledge base or contact a support team member via the chat button at support.avax.network.

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