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Coldcard Hardware Wallet
Coldcard Hardware Wallet
  • Why we recommend Coldcard
  • Guide Overview
  • Wasabi Wallet companion app
  • 🏰Security Overview
    • Is Coldcard secure?
    • Securing the wallet: overview of the basics
    • How people lose their Bitcoin
  • πŸ”Create your wallet & backup
    • What you need
    • Initializing the device
    • Coldcard PIN Overview
    • PIN Steps
    • Updating the Firmware
      • Verifying the Firmware
    • Wallet backup basics
    • Create Wallet backup
      • Dice Roll Method (optional)
      • MicroSD backup (optional)
    • Seed XOR (optional)
      • Steps for Seed XOR
      • Restoring from Seed XOR
    • Passphrase Overview
    • Steps for adding a passphrase
      • Lockdown Seed
    • Installing Wasabi Wallet
      • Verifying Wasabi Wallet
    • Connecting to Wasabi Wallet
      • Air-Gapped Coldcard (optional)
  • ⛓️How to use Coldcard with Wasabi Wallet
    • Steps for receiving Bitcoin payments
    • Steps for sending Bitcoin
      • Privacy/Coin Control
      • PSBT Method (optional)
  • 🏹More Features
    • PIN Security Features
    • Power & Login
    • Address Explorer
    • BIP-85 Wallets
      • Using BIP-85 with Wasabi
  • ⚠️Summary
    • DO's & DONT's
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  • Restoring from Seed XOR
  • Restoring your backup with Seed XOR by hand

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  1. Create your wallet & backup
  2. Seed XOR (optional)

Restoring from Seed XOR

Restoring from Seed XOR

In your Coldcard device go to:

  1. Advanced

  2. Danger Zone

  3. Seed functions

  4. Seed XOR

  5. Restore Seed XOR

  6. OK

  7. Enter the words from list A

    • At the 24th word, The Coldcard will display a short list of words for you to choose the correct word from.

  8. Repeat for list B

You must have both parts in order to restore your seed phrase. The order in which you enter them (either seed XOR A or B) does not matter.

If restoring on existing Coldcard:

  • The imported seed XOR will only remain temporarily.

  • You will be asked if you want to use the existing seed by pressing on 1 - DON’T, press OK

If restoring on new Coldcard:

Follow the instructions below if you are restoring your seed on a new, uninitialized Coldcard device.

  1. Import Existing

  2. Seed XOR

  3. Enter one of the parts (lis A or B)

  4. When done, press on 1 to enter the next part

  5. Enter the other list of words

  6. Confirm that the 24th word of your original seed phrase is correct

  7. Press 2 to complete the import

To verify the imported seed:

Use this to see the backup stored in the device and if it matches the original that you have written down.

  1. Advanced

  2. Danger Zone

  3. Seed functions

  4. View Seed Words

  5. OK

Restoring your backup with Seed XOR by hand

It is possible to recreate your original backup using the two seed XOR word lists by hand. Follow the intructions below to do so:

  1. Once lists A and B have been written down in the worksheet, use the table in your worksheet to complete the A + B row.

To do so, associate the hex digits of each word from list A with those from list B.

Whether you look up the row or column first does not change anything since it will produce the same value.

Enter the digit that you obtain from the table in your worksheet. At the end of the process, you will have a new hex code.

Using the wordlist and the newly generated hex codes, retrieve the words that form your seed phrase.

PreviousSteps for Seed XORNextPassphrase Overview

Last updated 3 years ago

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Using this , enter the words from the two lists that have been generated using seed XOR on your Coldcard.

Using this , write down the 3-digit hex code associated with each word in your worksheet.

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worksheet
wordlist