How do I upload a key using my Coldcard?

Sign into your account, then click 'Keys' on the left to get started.

Keys are required to create vaults and loans. You will use a Coldcard hardware wallet to upload a key to your account in air-gapped mode.

What you'll need

  • Your Coldcard hardware wallet with its power cord and SD card
  • A PC or Mac with an SD card reader
  • An active Unchained Tier 1 approved account

How to upload a Coldcard key to your account

  1. Follow the guide from the manufacturer to set up the device as new.
  2. Sign in to your Unchained Capital account, click Keys on the left side menu and Upload new key.
  3. Type a name for your key.
  4. Choose Coldcard as your hardware wallet.
  5.  Upload your XPUB by selecting Settings > Multisig Wallets > Export XPUB on the Coldcard. Select 0 for the account.
  6. Remove the SD card from the Coldcard and insert it into your computer’s SD card reader.
  7. Upload the XPUB to the Unchained platform and click Next.

That’s it! You can now use your key to create vaults and loans.

Tip: Practice good key management by reviewing our operational security article.