We held an impromptu Twitter spaces on Proof of Keys day to discuss Bitcoin self custody. I was joined by guests including Justine Harper, Jameson Lopp, Dee, Craig Raw, Lazy Ninja and Rijndael among others, to discuss all things Bitcoin self custody - from noob to self custody guru! Discussion Topics: 00:07:46 Most common ways to lose coins 00:19:01 Passphrases 00:27:30 Leaving coins on exchanges 00:34:51 Metal backups 00:40:21 Wallet recovery 00:44:01 Singe sig roundup 00:44:45 Seed XOR 00:48:14 Multisig overview 00:51:34 Multisig solutions 00:57:28 Unchained capital collaborative multisig 01:00:56 Casa collaborative multisig 01:04:55 Nunchuk multisig 01:09:27 Summary of self custody solutions 01:17:12 Security 01:18:34 Can SHA256 be broken? 01:22:53 Entropy and secure key generation 01:29:30 Air gapping and secure software/hardware 01:36:59 Binaries 01:38:24 Hardware random number generators 01:46:00 Quantum computer risk 01:46:48 Multisig grifting attacks 01:49:13 All signing devices are not made equal 01:51:34 Rolling dice for entropy 01:52:18 Correctly adding entropy to key generation 01:54:15 Important features of hardware wallets 01:56:06 "Strength in numbers" in Bitcoin security 01:59:06 Different approaches to signing device security 02:00:34 True versus concatenated random number generators 02:04:00 Summary of complexities and theoretical risks in wallet generation 02:05:32 USB VS SD 02:11:00 Non secure chip attack vectors 02:12:40 Firmware attack vectors 02:15:38 Multichip approach to hardware security 02:16:18 Relevancy of weighting of dice for creating entropy Links & Contacts: Website: https://bitcoin.review/Podcast Twitter: https://twitter.com/bitcoinreviewhq NVK Twitter: https://twitter.com/nvk Telegram: https://t.me/BitcoinReviewPod Email: [email protected] Nostr & LN:⚡[email protected] (not an email!) Full show notes: https://bitcoin.review/podcast/episode-19/

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“What did the council decide on item 42?” — answered with the speaker and the moment.

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