# How to use the Bool Bridge?

#### What is Bool Bridge?

Bool Bridge allows transferring BTC from the mainchain to Fractal as a BRC-20 token and vice versa. This enhances interoperability and unlocks opportunities for decentralized applications.

The assets that are available for transfer are:

* BTC <> bBTC
* ordi <> bORDI
* sats <> bSATS

Please do your own research. This guide serves only as a reference for users.

### Connect your UniSat wallet

Step 1: Go to <https://fractal.boolbridge.com/>.

Step 2: Click “Connect wallet”.

<figure><img src="/files/ExhzcdHwNCJ17rrrYiAU" alt="" width="563"><figcaption></figcaption></figure>

Step 3: Ensure you have the UniSat Wallet installed on your browser. You can download it through <https://unisat.io/download> or [the Chrome web store](https://chromewebstore.google.com/detail/unisat-wallet/ppbibelpcjmhbdihakflkdcoccbgbkpo?pli=1).

*Please make sure you are:*

🔶  *using the latest version of the extension.* 🔶 *using a Taproot wallet. Understand the different types of* [*wallet addresses here*](https://docs.unisat.io/services/unisat-wallet/unisat-wallet-address-type)*.*

<figure><img src="/files/XL9vGf3YK9TAG3HxSHdG" alt="" width="563"><figcaption></figcaption></figure>

### Bridging Bitcoin to Fractal Assets (e.g. bBTC)

Step 1: Choose the asset that you would like bridge from the Bitcoin mainnet to Fractal.

<figure><img src="/files/JAEeai2ToAFoLcq2ici0" alt="" width="563"><figcaption></figcaption></figure>

Step 2: Enter the amount you would like to bridge to Fractal.

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

Step 3: Press “Deposit” when you are ready.

<figure><img src="/files/odQ4EgeyneGwZwa0IpqX" alt="" width="563"><figcaption></figcaption></figure>

Step 4: In the pop-up window, check if the input and output addresses correspond to your desired destination. If the details are right, click “Sign” to confirm the transaction.

<figure><img src="/files/IoAQZphx7K5FR9LhBdHw" alt="" width="563"><figcaption></figcaption></figure>

Step 5: The transaction is now sent. You can track your transaction on the mempool explorer by clicking “View on explorer”.

<figure><img src="/files/utCbpFeV3C9qY6C3mbK2" alt="" width="370"><figcaption></figcaption></figure>

### Bridging Fractal Assets (e.g. bBTC) to Bitcoin

Step 1: Click this arrow to switch to transfer from the Fractal BItcoin mainnet.

<figure><img src="/files/pPzKsISF6DWbpouEem2a" alt="" width="563"><figcaption></figcaption></figure>

Step 2:&#x20;

a. Click ”Refresh” to transfer your inscriptions.&#x20;

b. A pop-up window will appear, allowing you to select your desired output value and fee rate. To prioritize your transaction during periods of high network congestion, you can enable the "Replace-By-Fee (RBF)" option, which allows you to modify the transaction fee for quicker processing. After configuring your settings, click "Next" to proceed.

<figure><img src="/files/HBkK2Oq42g8ZyKX1nMMv" alt="" width="563"><figcaption></figcaption></figure>

Step 3: Check if the details of your transfer are correct. Click “Next”.

<figure><img src="/files/xBdSiFkq0Z7rgpkSYnjW" alt="" width="563"><figcaption></figcaption></figure>

Step 4: Once your inscriptions are successfully processed, it may take a few minutes for them to be indexed and appear on the interface.

<figure><img src="/files/0VSyh3bSNJWQV4BXFJ9f" alt="" width="563"><figcaption></figcaption></figure>

Step 5: Once your inscriptions have been indexed, they will appear as selectable options in the interface. Click on the inscription you wish to transfer, as shown below, to confirm your selection.

<figure><img src="/files/5sV74dn710sz0KDrR6uo" alt="" width="563"><figcaption></figcaption></figure>

Step 6: To confirm your transfer, click “Withdraw”.

<figure><img src="/files/17Sjo4Gxr29qaRbphqTG" alt="" width="563"><figcaption></figcaption></figure>

Step 7: In the pop-up window, check the details and sign the transaction.

<figure><img src="/files/YBXQIecesPkQL1G84Xjq" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="/files/S3hiHDg4cM7VZq80J4X3" alt="" width="563"><figcaption></figcaption></figure>

Step 8: The transaction is now sent. You can track your transaction on the mempool explorer by clicking “View on explorer”.

<figure><img src="/files/9d67EyZb2eLSOt2fjBDv" alt="" width="563"><figcaption></figcaption></figure>

### Viewing Your Transaction on The Explorer

**Option A:** Click the link on the transaction confirmation page

<figure><img src="/files/Po7DHXwEzBakbxJBJJ0M" alt="" width="414"><figcaption></figcaption></figure>

**Option B:** Click "History”.

<figure><img src="/files/L2kAg5jzGBhaerDZ3LUi" alt="" width="563"><figcaption></figcaption></figure>

a. To view the transaction in the Bitcoin mempool explorer, click the link located below the BTC amount.

b. To view the transaction in the Fractal mempool explorer, click the link located below the Fractal asset.

<figure><img src="/files/lY5b7Z071qwpFGQvV6QM" alt="" width="563"><figcaption></figcaption></figure>

#### Block Confirmation Times

Please note that the Fractal Bool Bridge requires four confirmation blocks on Bitcoin before it shows in your Fractal balance. This is to ensure the security of the assets. In general, it will take between 30-40 minutes for you to receive your bBTC on Fractal.

### Checking bBTC Assets in Your UniSat Wallet

To check all bBTC addresses, access this link: <https://explorer.unisat.io/fractal-mainnet/brc20/bBTC___>

<figure><img src="/files/iRRcAg2Mr2dz9RQsSnTC" alt="" width="563"><figcaption></figcaption></figure>

To check your bBTC assets, access this link: <https://fractal.unisat.io/address/account?tab=brc20>.

Step 1: Connect your wallet.

<figure><img src="/files/WMOa3ZNIdMmUS8DDYffh" alt=""><figcaption></figcaption></figure>

Step 2: If your wallet holds any bBTC, it will be displayed in the interface under the BRC-20 section, showing the available and transferable amounts.

<figure><img src="/files/T2NsgaqSDCf3GSHgJqa3" alt="" width="563"><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.fractalbitcoin.io/getting-started/how-to.../how-to-use-the-bool-bridge.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.