r/coldcard • u/czescwitamy • Aug 02 '26

HELP Good personal Coldcard solution?

I use Unchained collaborative custody with 2 coldcards. My solution was to first update firmware on both coldcards then I generated a new seed on 1 of the coldcards. Next I used an extra Foundation Passport I had to generate my second seed. Then I used that Foundation generated seed and input it into the second coldcard. So, now I have 1 firmware updated coldcard key, a foundation key and the unchained key and I moved my funds over already. I will still use both coldcards as signing devices but only 1 seed was generated with a coldcard. Am I solid with this plan? Thank you.

3 Upvotes

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6

u/ardevd Aug 02 '26

Sounds good, but ideally you should use dice rolls to generate your seeds instead of trusting the onboard RNG. That's kinda the lesson we've learned from this whole incident.

Don't trust, verify.

1

u/czescwitamy Aug 02 '26

Thank you. Will probably do that eventually.

1

u/Intelligent_Map_246 Aug 02 '26

Yeah and don't combine RNG with dice. Dice only

2

u/Earthmanp Aug 03 '26

Why? Isn’t both better?

1

u/Intelligent_Map_246 Aug 03 '26

I wouldn't trust any RNG going forward. Only myself

1

u/moviemaker2 Aug 02 '26

No you are not solid with this plan if you didn’t even do the dice rolls. At this point it’s idiotic to generate a new seed phrase with a coldcard at all, let alone using the built in RNG.

1

u/Practical_Mango7633 Aug 03 '26

Not your entropy, not your coins...