50:29

Ep. 102 Nov 6, 2026

Episode 102: Bitcoin Core 32.1 — Live

Aaron and Sjors discuss Bitcoin Core 32.1 and its updated security disclosure policy in this live conference recording, followed by audience questions. Links Bitcoin Core 32.1 release announcement and release notes Bitcoin Core security disclosure policy Pull requests and discussion Tor proof-of-work defenses: #33414 CJDNS support: discussion #36041 and release-note update #36202 Replacing libevent with a custom HTTP server: #35182 More inbound block-relay capacity: #28463 Fetching block inputs in parallel: #35295 Removing the experimental warning from send and sendall: #35601 Watch-only wallet exports: RPC #32489 and GUI #872 Undo-file overflow: advisory and fix #36669 TCP urgent-data memory exhaustion: advisory and fix #36665 The briefly mentioned paused-peer memory issue: advisory and fix #36667 Chapters 00:00:00 Live introduction 00:05:00 Tor proof-of-work defenses and CJDNS 00:12:06 Removing libevent: dependencies and the RPC server 00:15:40 More inbound block-relay connections 00:19:16 Faster validation with parallel input fetching 00:25:16 Wallet RPCs and watch-only exports 00:28:59 AI and the security disclosure policy 00:34:19 Undo-file overflow and chain reorganizations 00:41:15 TCP urgent data and memory exhaustion 00:48:11 Audience Q&A: watch-only wallets and descriptors Aaron’s Nostr: npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5 Sjors’ Nostr: npub1v25jqj332n630klwtqeqxgyrjl4alw4phmluhu2x6lcxzwy9m03suqexw3 If you’d like to sponsor the show, please email info at bitcoinexplainedpodcast.com. https://bitcoinexplainedpodcast.com/

1:05:46

Ep. 101 Aug 26, 2026

Episode 101: The COLDCARD Hack

Aaron and Sjors discuss the COLDCARD hack: the bug itself, how it could have happened, and some reflections on having had Coinkite as a sponsor. Note: If you’re using a COLDCARD and still haven’t moved your funds to a secure location, do this as soon as possible. (Also listen to the previous emergency broadcast.) Further reading: https://wizardsardine.com/blog/coldcard-rng-vulnerability/ https://engineering.block.xyz/blog/predictable-rng-fallback-and-32-bit-reseed-in-coldcard-firmware Chapters 00:00:00 The Hack and Weak Seeds 00:05:33 Simulator Code and Weak Randomness 00:19:15 Why MK4 Was Vulnerable 00:25:56 Open Source and Security Audits 00:35:34 Preventing the Next Failure 00:38:47 Multisig and Custody Tradeoffs 00:44:11 Could Victims Recover Funds? 00:48:50 Our Sponsorship Responsibilities Aaron’s Nostr: npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: npub1v25jqj332n630klwtqeqxgyrjl4alw4phmluhu2x6lcxzwy9m03suqexw3 If you’d like to sponsor the show, please email info at bitcoinexplainedpodcast.com. https://bitcoinexplainedpodcast.com/

1:05

Jul 31, 2026

Emergency broadcast: COLDCARD vulnerability

The COLDCARD hardware wallet has a critical vulnerability. If you are using the COLDCARD to store bitcoin, move them to a secure location as soon as you can. More information: https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/ https://blog.coinkite.com/entropy-technical-backgrounder/

41:03

Ep. 100 Jul 15, 2026

Episode 100: Bitcoin Core 31

Aaron and Sjors discuss what’s new in Bitcoin Core 31. Chapters 00:00:00 Episode 100 and Core 31 00:02:41 Cluster Mempool 00:10:45 Package Relay and Fee Selection 00:18:59 Private Broadcast over Tor 00:24:03 ASMAP and Eclipse Attacks 00:31:45 The Private Broadcast Bug 00:33:44 Mining IPC and Stratum V2 This episode’s sponsor: CoinKite, maker of the COLDCARD. Aaron’s Nostr: ⁠npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: npub1v25jqj332n630klwtqeqxgyrjl4alw4phmluhu2x6lcxzwy9m03suqexw3