Timestamps:
00:00 - The Coldcard exploit: what happened and who is affected
02:20 - Move your funds: urgent guidance for Coldcard holders
05:09 - Technical breakdown: how the RNG flaw was exploited
10:17 - Passphrases, firmware bricking, and the silent downgrade
17:14 - Earlier warnings and why same-vendor multisig is exposed
21:22 - Weekend migrations: Michael and Liam's personal anecdotes
30:26 - AI vs quantum: the real threat to Bitcoin security
33:25 - Single-vendor risk, single-entity risk, and custody honeypots
44:03 - Silver linings: the end of the custody purity test
50:26 - Where the industry goes from here
56:15 - One mistake can't knock you out of the game
59:05 - Final guidance and staying vigilant
The TLDR:
The Coldcard exploit escalated into the largest self-custody incident in Bitcoin's history, with close to 2,000 BTC drained after Coinkite confirmed a five-year-old flaw in on-device seed generation that had silently downgraded the random number generator to guessable entropy. Passphrase wallets were confirmed compromised, MK4 and Q devices were exposed alongside the deprecated MK3, and some firmware updates reportedly bricked devices mid-migration. The larger lesson is architectural rather than a verdict on holding your own keys: same-vendor multisig quorums share the same failure, so real fault tolerance comes from spreading trust across independent vendors and institutions. The conversation also weighs why AI may be a nearer-term threat to Bitcoin security than quantum computing, and why a rush to exchanges and ETFs is the wrong response to a single point of failure.
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Episode Links:
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