> For the complete documentation index, see [llms.txt](https://docs.fractalbitcoin.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fractalbitcoin.io/getting-started/how-to.../how-to-use-the-simple-bridge.md).

# How to use the Simple Bridge?

Simple Bridge, developed by UniSat, is a small service designed to securely and efficiently connect assets from different protocols to PizzaSwap. By integrating the latest cryptographic algorithms, Simple Bridge enhances the security and performance of cross-chain asset transfers, bringing innovation to the blockchain ecosystem.

Try it out:  <https://fractal.unisat.io/bridge>&#x20;

***

### **Understand Simple Bridge Rules**

* Before you begin, make sure to familiarize yourself with the [Simple Bridge rules](https://docs.unisat.io/fractal-services/simple-bridge-cross-chain-asset-transfers).&#x20;

### **Setting Up Your Fractal Bitcoin Wallet**

* Open the UniSat Wallet extension. You can download it by clicking [here](https://fractal.unisat.io/download).

### **Using Simple Bridge**

#### **Step 1: Access the Simple Bridge Page**

* Go to Simple Bridge Page [https://fractal.unisat.io/bridge ](<https://fractal.unisat.io/bridge >) and click "Connect" in the top-right corner to sign in with your wallet.&#x20;

<figure><img src="/files/9ZKIvxTPzsf9Z0co0ZQY" alt=""><figcaption></figcaption></figure>

#### Step 2: Bridge BTC or Inscribe Transfer for brc-20

* For BTC: Select BTC and simply input the amount you wish to bridge in the "You Pay" section.&#x20;

<figure><img src="/files/z5VTCoyZw2TXeyGZFnu9" alt="" width="563"><figcaption></figcaption></figure>

* For brc-20: First, you need to perform an Inscribe Transfer. Select the ticker you want to bridge from the dropdown menu next to the ticker name, then choose a transfer to bridge.&#x20;

<figure><img src="/files/FwFK3riT2jk6hQGDYLa1" alt="" width="563"><figcaption></figcaption></figure>

If you haven't completed an Inscribe Transfer yet, follow the steps below:

* In the "You Pay" section, select the ticker you wish to bridge and click + to start the Inscribe Transfer.
* In the pop-up signature window, enter the Amount, Output Value, and Fee Rate. After verifying the information is correct, click "Next."
* Confirm the signature details, and click "Next" again.
* Double-check the inputs and outputs in the signature window. Once everything is correct, click "Sign & Pay" to complete the Inscribe Transfer.
* After inscribe transfer, you need to patiently wait for 3 block confirmations.
* Make sure the amount for the Inscribe Transfer is not less than the minimum value specified on the interface.

<figure><img src="/files/uQLavOnDau0CfRcuPSKK" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/PFGYQJtoVtccgce45uzC" alt="" width="563"><figcaption></figcaption></figure>

#### **Step 3: Bridge Operation**

1. In the Simple Bridge page, select the asset you want to bridge and input the amount in the You Pay field.
2. The system will automatically calculate and display the amount you will receive in the You Receive field. Verify the Receiving Address and Fee. If everything is correct, click Deposit.
3. In the signature window, confirm the inputs and outputs, then click Sign to complete the operation.&#x20;

<figure><img src="/files/MfQh6AKs0II5QYlO37WK" alt=""><figcaption></figcaption></figure>

**Step 4: View Bridge Details**

* After signing, you'll be taken to the Bridge Details page. The system will automatically complete the bridge operation.&#x20;

<figure><img src="/files/Tbc0x4IBVRgGeYTQ0IMj" alt=""><figcaption></figcaption></figure>

### Withdraw from Simple Bridge

The operations for withdrawing and depositing through the bridge are the same.

First, click the 🔁 icon on the page to switch to withdraw mode.&#x20;

<figure><img src="/files/qYWHziQ1QVOHEfZuCYYJ" alt="" width="563"><figcaption></figcaption></figure>

#### **Step 1: Inscribe Transfer**

* First, you need to perform an Inscribe Transfer. Select the ticker you want to withdraw from the dropdown menu next to the ticker name, then choose a transfer to withdraw.&#x20;

<figure><img src="/files/n0onfJTxfyrgO603tVk3" alt="" width="563"><figcaption></figcaption></figure>

* If you haven't completed an Inscribe Transfer yet, follow the steps below:In the "You Pay" section, select the ticker you wish to withdraw and click + to perform the Inscribe Transfer.
* In the pop-up signature window, enter the Amount, Output Value, and Fee Rate. After verifying the information is correct, click "Next."
* Confirm the signature details, and click "Next" again.
* Double-check the inputs and outputs in the signature window. Once everything is correct, click "Sign & Pay" to complete the Inscribe Transfer.
* After inscribe transfer, you need to patiently wait for 3 block confirmations.
* Make sure the amount for the Inscribe Transfer is not less than the minimum value specified on the interface.&#x20;

<figure><img src="/files/IPB8B7T620JFMHmvxK70" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/6a3lsawRbBtEYtxaDpTx" alt="" width="563"><figcaption></figcaption></figure>

#### Step 2: Withdraw Operation

1. In the "You Pay" section, select the ticker you want to withdraw, and click the amount you previously Inscribe Transferred.
2. 2.The system will auto-fill the "You Receive" field with the corresponding amount. Double-check the Receiving Address and Fee. Once confirmed, click "Withdraw."
3. In the signature window, confirm the inputs and outputs, then click "Sign" to complete the process.&#x20;

<figure><img src="/files/1LriovxdZxaSGUvk7KgB" alt=""><figcaption></figcaption></figure>

#### **Step 3: View Withdraw Details**

* After signing, you'll be redirected to the Withdraw Bridge Details page. The system will automatically complete the bridge operation.&#x20;

<figure><img src="/files/0Uv7Jh3ouAdF5f2qQvVk" alt=""><figcaption></figcaption></figure>

### View Bridge History

You can view your Bridge Deposit and Withdraw history anytime by visiting the Bridge History page: <https://fractal.unisat.io/bridge/history>

<figure><img src="/files/0b3CfNLmPuxhXtWcsvJG" alt=""><figcaption></figcaption></figure>


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