Keystone 3 Pro: Generate Your Seed Phrase with Dice Rolls

Preparing Your Device

If you already have a wallet set up on your Keystone, you have two choices: you can either add a completely separate wallet to the device (it supports up to three, each protected by a unique PIN), or you can completely factory reset the device to start fresh.

To wipe the device and start fresh:

1. Tap the three dots at the top right of the screen.
2. Go to Device Settings, then System Settings.
3. Scroll down and select Wipe Device.
4. Enter your current PIN to authorize the reset. Ensure the device is plugged in during this process!

Initiating the Dice Roll Process

Once your device is wiped (or if it's brand new), proceed through the initial language and verification prompts until you reach the "Create Wallet" screen.

1. Select Create Wallet and establish a strong PIN.
2. Give your wallet a name.
3. Instead of pressing "Standard Seed Phrase" right away, tap the three dots at the top right corner.
4. Select Change Entropy, then choose Dice Roll, and press continue.
5. Select "Standard Seed Phrase". You are now ready to begin rolling!

Rolling the Dice

Make sure you are in a private environment with no cameras pointing at your workspace.

You will need standard 6-sided dice. Roll the dice thoroughly (using a cup or box is a great idea for maximum randomness). Input the resulting numbers into the Keystone's interface as you roll them.

• For a 12-word seed phrase, you must input a minimum of 50 rolls.
• For a 24-word seed phrase, you must input a minimum of 100 rolls.

The Keystone is incredibly flexible. You can actually input far more than the minimum required rolls (I tested up to 239 rolls!) and the device will compute the additional entropy perfectly.

Verifying the Keystone is Not Lying (Optional, but Recommended)

How do you know the Keystone isn't secretly ignoring your dice rolls and just generating a random phrase anyway? You can test it!

To verify the math, you can perform a test run. Roll your dice and generate a seed phrase on the Keystone. Then, take those exact same dice rolls and input them into a trusted third-party tool, like another hardware wallet with a dice roll calculator (like the Coldcard) or an open-source tool like Ian Coleman's BIP39 tool.

If the seed phrases match, you have mathematically proven the Keystone is computing your physical entropy accurately.

CRITICAL WARNING: If you use an online tool or a separate device to verify the rolls, that specific seed phrase is now considered compromised! You must discard that test phrase, reset the process on your Keystone, and do a fresh batch of dice rolls for your real wallet without verifying them anywhere else!

Finalizing Your Wallet

Once you have completed your final, un-verified batch of dice rolls, follow the prompts on the Keystone to finalize the wallet. Write down your seed phrase on a physical backup, confirm the words on the device, and you are good to go!

I highly commend Keystone for building physical entropy tools directly into their software. It is a fantastic feature that significantly reduces the trust you have to place in the manufacturer.