Bitcoin Optech: Newsletter #274 Recap

Bitcoin Optech: Newsletter #274 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier, Fabian Jahr, Ethan Heilman, and Armin Sabouri to discuss Newsletter #274.


News

  • Replacement cycling vulnerability against HTLCs (1:40)
  • Bitcoin UTXO set summary hash replacement (24:21)
  • Research into generic covenants with minimal Script language changes (40:02)
  • Proposed BIP for OP_CAT (45:38)

Selected Q&A from Bitcoin Stack Exchange

  • How does the Branch and Bound coin selection algorithm work? (52:17)
  • Why is each transaction broadcast twice in the Bitcoin network? (54:29)
  • Why are OP_MUL and OP_DIV disabled in Bitcoin? (56:57)
  • Why are hashSequence and hashPrevouts computed separately? (58:56)
  • Why does Miniscript add an extra size check for hash preimage comparisons? (59:52)
  • How can the next block fee be less than the mempool purging fee rate? (1:00:51)

Releases and release candidates

  • Bitcoin Core 25.1 (1:12:00)
  • Bitcoin Core 24.2 (1:12:00)
  • Bitcoin Core 26.0rc1 (1:14:23)

Jaksot(190)

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Bitcoin Optech: Newsletter #372 Recap

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Bitcoin Optech: Newsletter #371 Recap

Bitcoin Optech: Newsletter #371 Recap

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Bitcoin Optech: Newsletter #370 Recap

Bitcoin Optech: Newsletter #370 Recap

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10 Syys 20251h 5min

Bitcoin Optech: Newsletter #368 Recap

Bitcoin Optech: Newsletter #368 Recap

Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #368.News● Draft BIP for block template sharing (0:30) ● Trusted delegation of script evaluation (28:07) Changes to services and client softwar...

8 Syys 20251h 7min

Bitcoin Optech: Newsletter #369 Recap

Bitcoin Optech: Newsletter #369 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by Bruno Garcia and Liam Eagen to discuss Newsletter #369.News● Update on differential fuzzing of Bitcoin and LN implementations (24:56) ● Garbled lock...

2 Syys 20251h 8min

Bitcoin Optech: Newsletter #367 Recap

Bitcoin Optech: Newsletter #367 Recap

Mark “Murch” Erhardt and Mike Schmidt discuss ⁠Newsletter #367⁠.Releases and release candidates● LND v0.19.3-beta.rc1 (0:19) ● Bitcoin Core 29.1rc1 (0:46) Notable code and documentation changes● Bitco...

19 Elo 202523min

Bitcoin Optech: Newsletter #366 Recap

Bitcoin Optech: Newsletter #366 Recap

Gloria Zhao and Mike Schmidt are joined by Tadge Dryja and Anthony Towns to discuss ⁠Newsletter #366⁠.News● Draft BIPs proposed for Utreexo (1:03) ● Continued discussion about lowering the minimum rel...

13 Elo 20251h 43min

Bitcoin Optech: Newsletter #365 Recap

Bitcoin Optech: Newsletter #365 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by David Gumberg, Lauren Shareshian, Jameson Lopp, Steven Roose, and Tim Ruffing to discuss Newsletter #365.News● Testing compact block prefilling (1:1...

6 Elo 20251h 56min

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