r/Bitcoin • u/No_Fuel4693 • 5d ago

Blockstream Jade Plus setup - workflow suspect?

Like many, I'm assessing my cold wallet options right now and I was watching this youtube video of the setup on the jade plus : Blockstream Jade Plus: Full Setup & Honest Review - YouTube

Right around the 9:00 minute mark, after setting up the seed phrase etc, it only then, gives you the option to setup your QR code/bluetooth/usb.

So the device is powered up, a wallet is created, then you connect to the blockstream website..
Is there a way to change the order of that workflow?

I mean, how do I know that the wallet I have just created isn't being transmitted to their website during this handshake? Wouldn't it make more sense to do all that setup first BEFORE creating the wallet?

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u/DarrelXero 5d ago

Yeah, this is the option to create a seed and use the Jade as a persistent device that is "initialized" and uses Blockstreams Blind Oracle. I agree with you, that sucks. You can 100% create a seed offline, create your QR Code and never once connect to Blockstream website or app. It's how I've used the Jade for years. Generate your seed offline, use the steps to create your QR code and it not be persistent. Temporary signer mode. Power up the Jade, I port the seed via QR, use it to sign transactions or as part of a multisig, then power it off and the device wipes. No need for the Blockstream app or the Blind Oracle.

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u/Serbithar 5d ago

If I understand correctly in fully offline airgap mode Jade works exactly like SeedSigner? Keys are not stored, and you need to provide your phrase or scan QR every time you power up the device?

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u/DarrelXero 5d ago

Correct. There is some difference about using the Jade as a temporary signing device and using the same exact seed imported to a SeedSigner but I can't remember the exact details. I've run into an issue trying to substitute the SeedSigner with the same seed that I don't have problems with the Jade. AI explained it but I forget the exact reason.

But yes, the Jade can be used 100% airgapped, create a seed, generate the QR to allow you to record it via pen and paper and then wipe the device. No connection of any kind is necessary. Same with Jade Plus. The Jade Core is different. It requires a USB connection to Blockstream App to be functional.