1. Export multisig xpub from @COLDCARDwallet (settings > multisig wallets > export xpub to SD)
2. Upload Coldcard multisig xpub via files app (airdrop) with FN2. Connected to my own pruned node on my macbook installed via http://Standup.app  ( @BlockchainComns). Send the multisig wallet .txt file back to Coldcard via airdrop and SD card.
3. Use the offline seed and xpubs FN2 gives me and create the same multisig wallet on @ElectrumWallet on a separate machine so it can be a signer.
4. Now I can use FN2 to create a psbt and pass it to either my @COLDCARDwallet or @ElectrumWallet for signing. Or I bypass FN2 and just use Coldcard/Electrum. For bonus points I added the offline seed to my partners FN2 app for even more redundancy, can use both iPhones to sign.
5. People say but what about the saving all your pubkeys? Now I have a backed up node that has the pubkeys, electrum wallet has the pubkeys, two iPhones have the pubkeys, and Specter desktop. Not to mention the backups which I have saved to cloud, emailed my self and printed.
6. Easy, achievable, ultra redundant, ultra secure collaborative multisig using psbt on top of @bitcoincoreorg is here to stay.
You can follow @FullyNoded.
Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.

Latest Threads Unrolled:
Those who think consciousness raising & movement building are disconnected, or even a distraction from electoral politics have not paid attention to the history of social change.In this thread, we
Read more
The 2020s will be known as the Remote Work decadeA few predictions of what is likely to emerge[ a thread ] Third Space: Office and Working from Home will
Read more
1/29: Have you ever had a concept explained to you that helps frame complex issues you’ve been wrestling with and opens your eyes to new possibilities? A concept that I
Read more
By continuing to use the site, you are consenting to the use of cookies as explained in our Cookie Policy to improve your experience.