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Coordinate Multisig

Now that we have all your public key information in Specter-Desktop, we need to create your 2-of-3 multisig wallet. We tell Specter-Desktop and each hardware wallet that these are your 3 public keys and that any 2 of them is sufficient to sign a transaction. This is a one-time setup that you’ll never need to repeat.

Setup Specter Desktop

  1. On Specter Desktop, select + Add new wallet > Multisignature wallet

  2. Give a name to your wallet (i.e. Redundant Multisig), choose Segwit (default), 2-of-3 (default) and select your 3 cosigners: Cobo, Coldcard and Paper Wallet

  3. Select your public keys. If you’ve followed the default steps, you’ll just select all 3 of them.

  4. See your first bitcoin address!:
    (we’ll learn how to trustlessly verify addresses in the Verify Receive Address section)

Setup Cobo Vault

  1. On Specter Desktop, select your wallet (Redundant Multisig) > Settings > Show Cobo QR Code:
    Which will generate a popup like this:

  2. Scan the QR code on your Cobo Vault:

  3. View wallet information and confirm:

Setup Coldcard

  1. On Specter Desktop, select your wallet (Redundant Multisig) > Settings > Download Coldcard File:

  2. Save this file to your microSD card and put the microSD card in your Coldcard.

  3. On your Coldcard, enter: Settings > Multisig Wallets > Import from SD
    (select the file and press √)

Advanced Configuration

Click here for advanced details on how to improve your security at this step.

>> Next Section: Verify Receive Address