How to Retrieve Your Unchained XPUB Key
Choose the proper hardware wallet manufacturer, and follow the prompts to export your public key.
For Trezor: Click Connect to Trezor. A Trezor Connect window will open in another tab. Choose Allow once for this session and Export. Enter your Trezor's PIN when prompted.
For Ledger: Unlock the Ledger with your PIN, select the Bitcoin app, and click Connect to Ledger. Click the right button several times and select Approve.
For Coldcard: Unlock the Coldcard with your PIN. Reupload your XPUB file by navigating to Settings > Multisig Wallets > Export XPUB on the Coldcard. Transfer the file to the Unchained web page via USB or SD card.
If you have a multi-signature wallet on Unchained, please follow this NODE40 support document on how to upload transactions to NODE40 Balance: https://node40.atlassian.net/wiki/x/VACHg
For more information on Unchained XPUB keys, please refer to the following Support Documents from Unchained: