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Bitcoin, Explained — The Technical Side of Bitcoin

Episode 101: The COLDCARD Hack

By Aaron van Wirdum and Sjors Provoost

Aired Aug 26, 2026 · 1h 5m · Last boosted 27d ago

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Show Notes

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… Aaron’s Nostr: npub1art8cs66ff...

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Nostr Community

Everyone who has boosted Episode 101: The COLDCARD Hack on Nostr, ranked by sats sent, all time.

  1. Kevin Ravens₿erg ⚡️ ☁️ 10k sats
  2. Cykros 500 sats
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Thanks from the https://coinjoin.nl coordinator from the Netherlands
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My favorite bitcoin bookclub ⚡️
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Thanks for covering the coordinator topic here, from https://coinjoin.nl.
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A million times yes. Thank you for addressing this in the right way. You're one of the only podcasts that hasn't responded to Coinkite with yet more bad options. Very much excited that Learning Bitcoin From The Command Line is getting a new edition too -- long overdue.
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Re:other nodes and making news, you're clearly not watching Eric Voskuil on Twitter. Libbitcoin 4 just did IBD in 14 minutes on a consumer connection (with assumevalid height of 950k) and 55 min for full validation. Older than Knots, and older than Core being called, well, Core. They slept for a good few years but are waking up with a vengeance.
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Thanks for removing the friction from consuming Mises.
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Love the new host of this podcast 🕶️from https://coinjoin.nl
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Ben, if you see bears in the future, give them something they'd want instead of grapes. Picnic baskets.
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Ben's the Boy who cried Bear. Haha.
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Welcome back Walker, congrats on the bigger family Also, xpubs will only give unhardened addresses. That said, I expect a Venn diagram of people who didn't roll dice and people using hardened addresses is probably two separate circles.
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CykrosJul 17, 2026
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This is sweet, thanks for covering this. Been getting excited listening to @npub1v25jqj332… talk about Stratum v2 for a while now. Nice to see it in action.
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Welcome back
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People would hit me with things suggesting Slackware to a Linux beginner, but you seem keen on appropriately following documentation, and it's got some of the best documentation, and very vanilla software which makes using upstream documentation easy to use too. Some key audio thoughts too. https://web.archive.org/web/20260426090835/https://blog.sla… Doing your work you may want more than the standard pulseaudio back end.
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Robinhood's 'tokenization' sounds more like an Exchange Traded Note (ETN) that is just a liability of Robinhood and traded on chain. These aren't new, but putting them on chain is. The SEC is talking more about trading actual stock ownership using the chain as a ledger. Very different despite the similar performance in ideal circumstances. If the stock goes up but robinhood goes under, you are out, while with the shares the SEC is talking about, you're good. Maybe a little market downtime, but you'd just get regular shares with SIPC coverage.
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'Rear admiral' 😅 Tom Luongo calls him Big Gay Patton. Still amused Trump brought us the highest ranking gay man in American history.
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Boston Bitdevs is coming up on July 30 at MIT Building 4. Be sure to RSVP through bostonbitdevs.org (or with the link if David wants to put it in notes). https://app.evento.so/e/evt_3M48gmwDKdbzNc63 Come with questions!
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MOAR LUONGO
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