Replying to Avatar Joe Santamaria, MD

Obvious & random, but, man, the ColdCard MK4 is so fucking sick.

#Bitcoin just has all the coolest stuff.
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[ARCHIVED] Jay 2y ago

I absolutely love my CC Mk4. My favorite part is that it can run off a 9V battery.

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Joe Santamaria, MD 2y ago

Same I absolutely love it lol wish I did more on it other than firmware upgrades 😂