Jack Mallers Show, “How Bitcoin Custody Works & Breaking Down The Coldcard Incident” (about 2 hours 15 minutes, published August 4, 2026). • YouTube: • Chapter “Offline Bitcoin Core as Cold Storage” starts at 1:17:44. • Around 1:17:51 he says that if you mainly want to store bitcoin and rarely move it, you could buy a laptop, run Bitcoin Core, and keep the laptop offline and never connected to the internet. He frames Core as the most reviewed codebase in the ecosystem and contrasts that with specialized hardware-wallet firmware (in the context of the Coldcard incident). • Related chapter: “Hardware Wallets Are Not Required” at 1:46:31. He makes a similar point later on BTC Sessions, episode “Somebody Has To Eat The 40 Trillion Dollar Loss | Jack Mallers” (Mentor Sessions Ep 098, around September 24, 2026). The chapter “Just Use Bitcoin Core for Security” is listed at about 1:02:09