Blockstream Jade Core

When you save a wallet on Core with a PIN, the device stores encrypted wallet data. Unlocking combines your PIN, a secret on the device and a secret from Blockstream’s PIN service, called a blind oracle. The companion app needs an online connection to relay that exchange. The service does not receive your PIN or recovery phrase.

For everyday PIN unlocking, plan to have the companion app online and able to reach the service. Three incorrect PIN entries require restoring the wallet from its recovery phrase. Keep the written backup independently of the device.

Get the official Blockstream app, then follow its Jade setup instructions. For a new wallet, the recovery words are created on Core; connecting the hardware wallet does not require importing those words into the phone or computer app.

1. Before creating or restoring the wallet, Blockstream recommends updating the firmware. Desktop USB can provide the update prompt before setup; the mobile app prompts after setup is complete.
2. On Core, choose Create New Wallet to create a new wallet, or Restore Wallet if you are deliberately recovering an existing compatible wallet. For a new wallet, write down the recovery words offline and complete the word confirmation on the device.
3. In the Blockstream app, choose Connect Jade and select the connection on Core. Complete pairing and create the 6-digit PIN on the device. The wallet is not saved on Core until this PIN setup is finished.

To receive Bitcoin, open your Jade wallet in the Blockstream app and choose Receive. Select Verify on Device, then compare the address shown on Core with the app’s address before sharing it with the sender. For an exchange withdrawal, the sending network must match the receiving account.

To send, enter the recipient, amount and fee in the app. Core then shows the payment for your approval: compare the address and amount with what you intended, selecting the address field to see it in full. After you approve, Core returns the signed transaction to the app, which broadcasts it. Device approval and network confirmation are separate stages.

If Core is lost, damaged or needs restoration after incorrect PIN attempts, recovery depends on your written phrase. Blockstream documents manual entry of a compatible recovery phrase through Restore Wallet. If you used an optional passphrase, you also need that exact passphrase: changing it opens a different wallet, and Jade does not store it.

While the wallet still works, Blockstream’s Temporary Signer procedure lets you check the written backup without overwriting the PIN-saved wallet. First record the saved wallet’s 8-character fingerprint. Read the official procedure, enter the same recovery words manually on Core and use the exact passphrase if you had one, then compare the fingerprint. A matching fingerprint is Blockstream’s check that the entered backup matches the PIN-saved wallet. Temporary Signer forgets the loaded wallet when Core turns off; keep the recovery backup.

Before recovering a wallet from another device, check the recovery format and the account requirements. Creating a new wallet gives you a new backup and receiving addresses; it does not restore the old wallet.

On desktop, connect Core by USB and follow the Blockstream app’s firmware prompt. On mobile, the prompt appears after initial setup; iPhone uses Bluetooth for data. If the wallet is already in use, have the written recovery phrase and exact optional passphrase available before device changes, and follow the official update instructions.

The Bitcoin workflow described here uses the Blockstream app with standard Bitcoin/Liquid firmware, which is not limited to Bitcoin. No-Radio firmware removes Bluetooth support; it does not fit the iPhone connection described above. Before using another asset or network, check the installed firmware and the app’s support for that task.