# Bridge from Avalanche

### Overview

When live on Mainnet, **Plan B** will use [**BTC.b**](https://support.avax.network/en/articles/6349702-what-is-the-btc-b-token-contract-address) as native gas token. BTC.b is the **Avalanche Bridged Bitcoin** and one of the largest market cap wrapped Bitcoin in the crypto market with a TVL of $500M+.

Anyone with BTC bridged to the Avalanche [C-Chain](https://support.avax.network/en/articles/4058262-what-is-the-contract-chain-c-chain) as BTC.b will be able to bridge it Plan B using the **Suzaku Relayer Network**, a purpose-built decentralized cross-L1 messaging network supercharging [**ICM**](https://docs.avax.network/cross-chain/avalanche-warp-messaging/overview) (Inter Chain Messaging) with censorship resistance, liveness, and validity.

### Bridge BTC.b from Fuji C-Chain to Plan B Testnet

The **Suzaku Bridge** is live on testnet at [https://bridge.suzaku-test.network](https://bridge.suzaku-test.network/).

#### Prerequisites

* Some BTC.b ERC-20 on Fuji C-Chain (see [Faucet](/docs/testnet/markdown.md)).
* Fuji C-Chain network available in your wallet (see [How to connect to the Fuji Testnet?](https://support.avax.network/en/articles/6224787-how-to-connect-to-the-fuji-testnet))

The Suzaku Relayer Network can be used to bridge the **BTC.b ERC-20** from the Avalanche Fuji C-Chain to **Native BTC.b** gas token on Plan B Testnet.

<figure><img src="/files/xHfaTjNXz8ujSJsoAlTU" alt=""><figcaption><p>Suzaku bridge</p></figcaption></figure>

To bridge BTC.b:

* Connect your wallet
* Select as **source**: Avalanche -> Bitcoin (BTC.b)
* Select as **destination:** Plan B Testnet
* Type in an **amount**
* Click on **Approve**
* Click on **Transfer**

{% hint style="success" %}
The bridge from Avalanche C-Chain to Plan B is operated by our partner [**Suzaku**](https://www.suzaku.network/)
{% endhint %}

### References

* [Bridging Bitcoin To Avalanche: A Technical Overview](https://medium.com/avalancheavax/bridging-bitcoin-to-avalanche-a-technical-overview-2535e7088b8)
* [Suzaku Relayer Network](https://docs.suzaku.network/suzaku-rn)


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