Stephan Livera Podcast Coldcard Mk5, quantum, and AI with NVK | SLP735
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May 6, 2026 
NVK, founder of CoinKite and creator of the Coldcard hardware wallet, talks about the Coldcard Mk5 hardware refresh and key firmware upgrades. He covers Miniscript-based spending policies, practical operational use-cases like whitelists, and debates trade-offs around usability versus full self-custody. He also addresses AI tools, llm‑wiki concepts, and debunks quantum panic affecting crypto security.
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Enforce Spending Policies On Hotter Signing Devices
- Lock devices into spending policies to limit losses under duress or operational exposure by enforcing limits and whitelists on Coldcard.
- NVK described setups where a device can only spend up to a cap or only to loan-provider whitelisted addresses for topping up loans.
Coldcard Users Are Security Sophisticates
- Coldcard's user base self-selects for more security-savvy customers, so advanced features are actively used rather than ignored.
- NVK contrasted Coldcard users with general consumer wallets, advising phones suffice until holdings justify hardware upgrades.
Vendor Lock-In Undermines True Self Custody
- NVK criticized BitKey/Block for removing a true unilateral exit and not being honest about vendor lock-in risks, calling their emergency exit more theater than a robust escape.
- He warned public companies face shareholder and government pressures that can compromise unilateral key export over time.