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0 sats \ 6 replies \ @TSW 14 Jun 2023 \ on: Self Custody Help - Coldcard bitcoin
If you never ran the test before putting significant funds on it then I wouldn’t test it by wiping your existing seed from your CC, what if the seed you wrote down is wrong.
Assuming you want to keep the private key air gapped you can either test with another CC or cheaper, with a Blockstream
Also, I don’t see any mention of a pass phrase.
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10 sats \ 5 replies \ @DandelionLightning OP 14 Jun 2023
Thanks. I need to add a pass phrase, you’re right.
I’ll look into grabbing a block stream jade to stay air gapped.
Do I really need to wipe out my existing seed though? That’s my point, since I still have everything and in the event that I wrote down a wrong seed, won’t I just not be able to recover onto the second device? This is where I’m a little fuzzy because I’ve never needed to
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44 sats \ 2 replies \ @TSW 14 Jun 2023
Let's look at the following events:
  • Your seed backup is wrong but CC is still working fine. In this case you can continue to use your CC with access to the private key
  • Your seed backup is wrong and your CC is unusable/lost. In this case you cannot access your private key anymore.
As stated you can check your private key within the CC itself. But what if you swapped around two words when writing it down and you didn't see that. This is highly unlikely but you would only find it when really testing the seed import on a factory wiped device.
For me on your situation it would come down to how much bitcoin I would have in cold storage:
  • Small amount (for you to decide), I wouldn't buy a 2nd wallet. I would: -- Check the Seed words against my backup -- Factory reset the device and import the seed to ensure it is working as expected
  • Large amount (for you to decide), get a 2nd wallet to test the seed import
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0 sats \ 1 reply \ @DandelionLightning OP 14 Jun 2023
Thanks again. And if for whatever reason the seed wasn’t right (not likely) and I attempt to import onto the second device (Jade), then basically my wallet just wouldn’t import, right? It’s as simple as that?
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22 sats \ 0 replies \ @TSW 15 Jun 2023
Correct. It is highly unlikely to find a working seed by mistake as the checksum won’t check out https://www.blockplate.com/blogs/blockplate/the-special-last-word-of-a-seed-phrase
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10 sats \ 1 reply \ @senf 14 Jun 2023
You can check your Coldcard's seed in the Danger Zone menu.
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0 sats \ 0 replies \ @TSW 14 Jun 2023
Yes. You can view the Seed there, which is still not the same as testing it as if you have lost your CC. https://coldcard.com/docs/advanced
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