This is how easy ultra safe ColdCard HSM/remote signed coinjoin will work:
https://blossom.primal.net/9d83f6cb49e2cb0e395c9d45f7e0828a3c2a32b243ab31774cd8efce58e31663.png
https://blossom.primal.n...
Oh damn, plus you can now do pay join from a coldcard right?!?! Wow, I guess we will call this new device the WarmCard
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