In this Guy's Take, I walk through listener questions and comments on the Coldcard random number generation failure and what it really means for Bitcoin self-custody. We dig into why the RNG bug went unnoticed for years, the difference between source-available and truly open source hardware, and how dice rolls and strong passphrases change your threat model. I also share how I’m thinking about safer setups going forward.

Chapters

(00:00:00) - Why Coldcard Questions Remain

(00:01:18) - Features vs Core Failure

(00:03:19) - Speed Over Security Risk

(00:04:54) - Car Without An Engine

(00:06:06) - RNG Paths And Failsafes

(00:08:32) - Open Source Trap

(00:10:36) - Dice Rolls And Passphrases

(00:14:30) - Rolling Your Own Entropy

(00:16:21) - Using Coldcard As Signer

(00:17:48) - Key Takeaways

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