# wallet\_openBridge

## Help Users Bridge Assets Between Bitcoin Layers

Your app can use the `wallet_openBridge` method to prompt the user to bridge assets between Bitcoin layers with their Xverse wallet.\
\
This can be especially useful to onboard users to apps operating on Bitcoin and Bitcoin L2s like Starknet, Spark or Stacks.

## Request Params <a href="#id-6c42baa3-c47d-47b0-9a64-be9a102ea8ad" id="id-6c42baa3-c47d-47b0-9a64-be9a102ea8ad"></a>

* `fromAsset`
  * The asset (ticker) you wish your user to bridge to another Bitcoin layer
  * Example: `BTC` when bridging BTC from Bitcoin Mainnet to Starknet
* `toAsset`
  * The asset (ticker) you wish your user to receive on the destination Bitcoin layer
  * Example: `WBTC` when bridging BTC from Bitcoin Mainnet to Starknet

## Permissions Required <a href="#id-616fb9ae-ded6-43dc-9c32-52a1a9ca8e55" id="id-616fb9ae-ded6-43dc-9c32-52a1a9ca8e55"></a>

* 🔓 Your app must have first [connected to the wallet](https://docs.xverse.app/sats-connect/connecting-to-the-wallet/connect-to-xverse-wallet) and obtained [account read permissions](https://docs.xverse.app/sats-connect/xverse-wallet-permissions)
* 🔒 If your user has not [connected their active Xverse account to your app](https://docs.xverse.app/sats-connect/connecting-to-the-wallet/connect-to-xverse-wallet) yet, and your app does not the necessary account read [permissions](https://docs.xverse.app/sats-connect/xverse-wallet-permissions) -> the method will throw with an access denied error

## wallet\_openBridge Result: Open the Bridge Flow <a href="#id-4c07a335-c0e0-4b42-81af-85ec2d1171bb" id="id-4c07a335-c0e0-4b42-81af-85ec2d1171bb"></a>

### ✅ Success <a href="#c7fcb152-b219-4511-9f1d-f3992d2c739e" id="c7fcb152-b219-4511-9f1d-f3992d2c739e"></a>

If the account is connected and the requested bridge route exists

* -> the method successfully returns `openBridgeResult`
* -> Xverse wallet opens the relevant bridge screen for the requested bridge route
  * the user can then choose an amount and confirm the bridge in Xverse Wallet<br>

    <figure><img src="/files/cKLFvDWIHKnL8oksxxu2" alt=""><figcaption></figcaption></figure>

### ❌ Error <a href="#d6911fd7-b946-47e4-8dc8-70af3607487a" id="d6911fd7-b946-47e4-8dc8-70af3607487a"></a>

* If the account is not connected or the requested bridge route does not exist, the method will reject with an error object


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