# Simple Bitcoin Wallet

Firmware version B-2.5 (BTC-Only) or newer will allow you to set *Simple Bitcoin Wallet* V2.4.23 or newer as a watch-only wallet that functions as the companion app for Keystone Essential or Pro.

## **I. Preparation**

1\. Setup your Keystone Essential or Pro. ([Tutorial](https://support.keyst.one/getting-started/setting-up-keystone-in-5-steps))

2.[ Firmware](https://keyst.one/firmware?locale=en) version B-2.5 (BTC-Only) or newer running on Keystone Essential or Pro.

{% content-ref url="/pages/-MVz-o9g8Dc-vlyVuAZj" %}
[Firmware Upgrade](/getting-started/firmware-upgrading.md)
{% endcontent-ref %}

3\. Android device with *Simple Bitcoin Wallet* V2.4.23 or later downloaded and logged in with your *Simple Bitcoin Wallet* account.

## **II. Creating a Watch-Only Wallet (BTC-Only) using *****Simple Bitcoin Wallet***

1\. On the Keystone hardware wallet, touch \[Menu] > \[Settings] > \[Watch-Only Wallet]. You can also complete this setup for your watch-only wallet during the initialization phase of your keystone device.

<figure><img src="/files/xKANJZ2xrzkFQD0ag6iI" alt="Keystone-SimpleBitcoinWallet-1"><figcaption></figcaption></figure>

2\. Select \[Generic Wallet], then touch \[Confirm] and enter the wallet. Touch the \[•••] icon, then select \[Export Wallet] to show the QR code to display the information required to pair your keystone device with a generic wallet (includes the wallet XPUB, Keystone's fingerprint, and derivation path).

<figure><img src="/files/9fAgLBmoyFvXsGzBslmM" alt="Keystone-SimpleBitcoinWallet-2"><figcaption></figcaption></figure>

3\. Run the *Simple Bitcoin Wallet* app, touch \[Create new wallet], then touch the “setting” icon on the top right corner and press \[Add hardware wallet].

<figure><img src="/files/SsfZGA5lB0rS4YwZEJ9E" alt="Keystone-SimpleBitcoinWallet-3"><figcaption></figcaption></figure>

4\. Use your smartphone's camera to scan the QR code displayed on your Keystone device, then set a label for your hardware wallet and press \[OK]. *Simple Bitcoin Wallet* can now be used as the watch-only wallet for Keystone.

<figure><img src="/files/OtwTaDksjQQmWYAOhdnZ" alt="Keystone-SimpleBitcoinWallet-4"><figcaption></figcaption></figure>

## III. Sending and Receiving Bitcoin with *Simple Bitcoin Wallet*&#x20;

### A. Receiving Bitcoin&#x20;

You can use either receiving addresses displayed on your Keystone device or *Simple Bitcoin Wallet* to receive bitcoin.

**- Displaying Address on Keystone**

1\. Enter your generic wallet interface on your Keystone device and select a receiving address to display it in QR code format.

<figure><img src="/files/JH3atoyiVIZQI3FBn0tY" alt="Keystone-SimpleBitcoinWallet-5"><figcaption></figcaption></figure>

**- Displaying Addresses on your&#x20;*****Simple Bitcoin Wallet***

1\. Select the wallet that you want to display its address, for this tutorial, this would be \[Keystone Hardware wallet].

<figure><img src="/files/PsYXTA8r433hAnDR9Ji2" alt="Keystone-SimpleBitcoinWallet-6"><figcaption></figcaption></figure>

2\. Alternatively touch \[Receive] on the bottom right of your screen > then select \[Receive to Bitcoin address] to display the receiving address.

<figure><img src="/files/q0tzod6xRfUsbtnr6FZT" alt="Keystone-SimpleBitcoinWallet-7"><figcaption></figcaption></figure>

### B. Sending Bitcoin

**1. Using&#x20;*****Simple Bitcoin Wallet*****&#x20;to Create Transactions**

1\) Touch \[Send] to enter the remittance interface, then configure the receiving address and touch \[OK] and choose a wallet (e.g. Keystone hardware wallet).

<figure><img src="/files/G49MAyMTx5e4rgcKHxKX" alt="Keystone-SimpleBitcoinWallet-8"><figcaption></figcaption></figure>

2\) Set your desired amount, transaction fees, and label (optional), then touch \[OK] to display the unsigned transaction information in a dynamic QR code format.

<figure><img src="/files/MrnPVjx9U81jKfzKQGUJ" alt="Keystone-SimpleBitcoinWallet-9"><figcaption></figcaption></figure>

**2. Using Keystone Hardware Wallet to Sign Transactions**

1\) Touch the \[scan] icon on Keystone and use the camera on your hardware wallet device to scan the QR code displayed on *Simple Bitcoin Wallet*.

<figure><img src="/files/LDO4ThCRwN1wiYreDrV9" alt="Keystone-SimpleBitcoinWallet-10"><figcaption></figcaption></figure>

2\) Check the transaction details. Then touch \[Sign], and input your password / fingerprint for your device to obtain the signed transaction information (awaiting broadcast).

<figure><img src="/files/cbu1zMyyABToIYKZXkc7" alt="Keystone-SimpleBitcoinWallet-11"><figcaption></figcaption></figure>

**3. Using&#x20;*****Simple Bitcoin Wallet*****&#x20;to Broadcast Transactions**

1\) Touch \[OK], and use your smartphone camera to scan the QR code displayed on your Keystone device to transmit the signed transaction data.

2\) Open up the broadcasting interface on your *Simple Bitcoin Wallet* and touch \[OK] to broadcast the transaction.

<figure><img src="/files/UaJRVGkRgbPmp4w50eVq" alt="Keystone-SimpleBitcoinWallet-12"><figcaption></figcaption></figure>


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