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)

Avsnitt(195)

Bitcoin Optech: Newsletter #385: 2025 Year-in-Review Special Recap

Bitcoin Optech: Newsletter #385: 2025 Year-in-Review Special Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier, Rearden Code, and Pieter Wuille to discuss Newsletter #385: 2025 Year-in-Review Special.January● Updated ChillDKG draft (43:08) ...

24 Dec 20253h 42min

Bitcoin Optech: Newsletter #384 Recap

Bitcoin Optech: Newsletter #384 Recap

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Matt Morehouse and Salvatore Ingala to discuss ⁠Newsletter #384⁠.News● Critical vulnerabilities fixed in LND 0.19.0 (0:59) ●...

16 Dec 20251h 12min

Bitcoin Optech: Newsletter #383 Recap

Bitcoin Optech: Newsletter #383 Recap

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Moonsettler and Julian to discuss Newsletter #383.News● Consensus bug in NBitcoin library (1:04) Changing consensus● LNHANCE...

9 Dec 20251h 20min

Bitcoin Optech: Newsletter #382 Recap

Bitcoin Optech: Newsletter #382 Recap

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt discuss ⁠Newsletter #382⁠.News● Stats on compact block reconstructions updates (0:34) ● Motion to activate BIP3 (7:26) Selected Q&A from B...

3 Dec 20251h 5min

Bitcoin Optech: Newsletter #381 Recap

Bitcoin Optech: Newsletter #381 Recap

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Antoine Poinsot and ZmnSCPxj to discuss Newsletter #381.News● Modeling stale rates by propagation delay and mining centraliz...

25 Nov 20251h 36min

Bitcoin Optech: Newsletter #380 Recap

Bitcoin Optech: Newsletter #380 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by TheCharlatan to discuss Newsletter #380.Releases and release candidates● LND 0.20.0-beta.rc4 (1:30) Notable code and documentation changes● Bitcoin ...

18 Nov 202544min

Bitcoin Optech: Newsletter #379 Recap

Bitcoin Optech: Newsletter #379 Recap

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Sebastian Falbesoner, PortlandHODL, Tadge Dryja, and Antoine Poinsot to discuss Newsletter #379.News● Comparing performance ...

12 Nov 20252h 7min

Bitcoin Optech: Newsletter #378 Recap

Bitcoin Optech: Newsletter #378 Recap

Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #378.News● CPU DoS from unconfirmed transaction processing (1:00) Selected Q&A from Bitcoin Stack Exchange● Why was -datacarriersize redefined ...

4 Nov 20251h 2min

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