Replying to Avatar 430

#asknostr #Coldcard users, how many GB are necessary for the microsd card that the wallet uses? I didn't purchase the microsd that's offered by Coinkite/coldcard, I went for a less expensive one
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Nice and Kind Vic 2y ago

A less expensive one is perfectly fine.

You use the microsd for a few key reasons, and both are under 1GB.

- shuttling PSBTs for your transaction signing (tends to be small)

- exporting wallet pubkey, addresses, settings (also small)

- Updating firmware (about 1MB)

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430 2y ago

Thank you Vic!

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Rich Nost 2y ago

Actually there are long-term sensitive information backup scenarios where you would uae the sd card, too. You can back up the seed or passphrase encrypted.

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Rich Nost 2y ago

Altho backing up the seed requires you write down a passphrase (oddly). And the passphrase backup is strictly tied to the sd card serial number and the seed.

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Nice and Kind Vic 2y ago

Yeah. And given the track record Ive had with industrial cards I wouldnt trust for long term survival