Using precision casino dice, roll 100 (256-bit entropy) or 200 (516-bit entropy) times when creating a seed in Sparrow by selecting "Manual or dice" on the seed creation screen.
#SovereignStack
https://www.amazon.com/Bescon-Professional-Precision-Corner-Random/dp/B0C3LXSCMJ
quotingTo keep your Sparrow USB environment offline, create a watch only wallet on your mobile device:
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1. Download Blockstream Green. It's free and open source. Works on iOS, Android, and #GrapheneOS.
2. Setup a new wallet, choose "single signature" then scan the QR code from Sparrow>Tools>Show xPub.
You'll be able to see the balance and even generate new recieve addresses.
Shut down and stow your Sparrow environment containing your private key, and use Green to proceed with the migration.
#SovereignStack
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