Bitcoin, Explained — The Technical Side of Bitcoin

Aaron van Wirdum and Sjors Provoost
  • 4.9 (17)
  • Technology
  • Updated Semimonthly

Bitcoin journalist Aaron van Wirdum teams up with Bitcoin Core contributor Sjors Provoost to explain Bitcoin one episode at a time.

  1. Aug 26

    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 Aaron’s Nostr: npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: npub1v25jqj332n630klwtqeqxgyrjl4alw4phmluhu2x6lcxzwy9m03suqexw3 If you’d like to sponsor the show, please email info at bitcoinexplainedpodcast.com. https://bitcoinexplainedpodcast.com/

  2. Jul 31

    Emergency broadcast: COLDCARD vulnerability

    More information: https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/ https://blog.coinkite.com/entropy-technical-backgrounder/

  3. Jul 15

    Episode 100: Bitcoin Core 31

    Aaron and Sjors discuss what's new in Bitcoin Core 31. This episode’s sponsor: CoinKite, maker of the COLDCARD. Aaron’s Nostr: ⁠npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: npub1v25jqj332n630klwtqeqxgyrjl4alw4phmluhu2x6lcxzwy9m03suqexw3

  4. 11/06/2025

    Episode 99: Bitcoin Core 30

    Aaron and Sjors discuss what's new in Bitcoin Core v30 This episode’s sponsor: CoinKite, maker of the COLDCARD. Aaron’s Nostr: ⁠npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: npub1v25jqj332n630klwtqeqxgyrjl4alw4phmluhu2x6lcxzwy9m03suqexw3

  5. 05/08/2025

    Episode 98: Return of the OP_RETURN

    Aaron and Sjors discuss the proposal to remove the OP_RETURN limit from Bitcoin Core. This episode’s sponsor: CoinKite, maker of the COLDCARD. Aaron’s Nostr: ⁠npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: ⁠nprofile1qyvhwumn8ghj7mn0wd68ytnnwpex7an0daehgtnwdshsqgyxsh477ejn8rwkjv0zen0ncxwe7rj6zpnujx8j9ecgrsj43786lqyul0f2

  6. 04/20/2025

    Episode 97: Bitcoin Core 29

    Aaron and Sjors talk about the new Bitcoin Core 29.0 release. .=== This episode’s sponsor: CoinKite, maker of the COLDCARD. Aaron’s Nostr: ⁠npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5⁠ Sjors’ Nostr: ⁠nprofile1qyvhwumn8ghj7mn0wd68ytnnwpex7an0daehgtnwdshsqgyxsh477ejn8rwkjv0zen0ncxwe7rj6zpnujx8j9ecgrsj43786lqyul0f2

  7. 02/05/2025

    Episode 96: Mining Decentralization Update

    Stratum v2, DATUM, Bitaxe, P2Pool and friends. In Bitcoin, Explained 96, Aaron and Sjors discuss some recent innovations in mining, and in particular mining decentralization. Specifically, they discuss the Stratum V2 and DATUM mining protocols to decentralize transaction selection in mining pools, the open source hardware Bitaxe miner, and some recent proposals to make decentralized mining pools like P2Pool more viable. === This episode’s sponsor: Coinkite, maker of the COLDCARD. Aaron’s Nostr: npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5 Sjors’ Nostr: nprofile1qyvhwumn8ghj7mn0wd68ytnnwpex7an0daehgtnwdshsqgyxsh477ejn8rwkjv0zen0ncxwe7rj6zpnujx8j9ecgrsj43786lqyul0f2

  8. 10/07/2024

    Episode 95: Bitcoin Core 28

    In Bitcoin, Explained 95, Aaron and Sjors discuss the new Bitcoin Core 28.0 release. Specifically, they cover upgrades to Bitcoin’s testnet (testnet 4), new mempool policies, full RBF integration, the introduction of assume UTXO, improved wallet migration support and the implementation of block file XOR. Bitcoin Core download page: https://bitcoincore.org/en/download/ Release notes: https://bitcoincore.org/en/releases/28.0/ This episode’s sponsor: Coinkite, maker of the COLDCARD. Aaron’s Twitter: @AaronvanW Aaron’s Nostr: npub1art8cs66ffvnqns5zs5qa9fwlctmusj5lj38j94lv0ulw0j54wjqhpm0w5 Sjors’ Nostr: nprofile1qyvhwumn8ghj7mn0wd68ytnnwpex7an0daehgtnwdshsqgyxsh477ejn8rwkjv0zen0ncxwe7rj6zpnujx8j9ecgrsj43786lqyul0f2

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Bitcoin journalist Aaron van Wirdum teams up with Bitcoin Core contributor Sjors Provoost to explain Bitcoin one episode at a time.

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