Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Remix7531 and Luis Schwab to discuss Newsletter #401 (https://bitcoinops.org/en/newsletters/2026/04/17/).

The Bitcoin Optech Podcast and transcription content is licensed Creative Commons CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0/legalcode)

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(https://d3ctxlq1ktw2nl.cloudfront.net/staging/2026-3-21/422553391-44100-2-00da219342443.m4a)

News

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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#discussion-of-using-nested-musig2-in-the-lightning-network)
      Discussion of using nested MuSig2 in the Lightning Network
      (34:05 (javascript:void(0))34:05)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#formal-verification-of-secp256k1-modular-scalar-multiplication)
      Formal verification of secp256k1 modular scalar multiplication
      (01:10 (javascript:void(0))01:10)

Changes to services and client software

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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#coldcard-6-5-0-adds-musig2-and-miniscript)
      Coldcard 6.5.0 adds MuSig2 and miniscript
      (40:56 (javascript:void(0))40:56)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#frigate-1-4-0-released)
      Frigate 1.4.0 released
      (41:46 (javascript:void(0))41:46)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#bitcoin-backbone-updates)
      Bitcoin Backbone updates
      (47:10 (javascript:void(0))47:10)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#utreexod-0-5-released)
      Utreexod 0.5 released
      (16:18 (javascript:void(0))16:18)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#floresta-0-9-0-released)
      Floresta 0.9.0 released
      (19:41 (javascript:void(0))19:41)

Releases and release candidates

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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#bitcoin-core-31-0rc4)
      Bitcoin Core 31.0rc4
      (48:01 (javascript:void(0))48:01)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#core-lightning-26-04rc3)
      Core Lightning 26.04rc3
      (49:00 (javascript:void(0))49:00)

Notable code and documentation changes

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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#bitcoin-core-34401)
      Bitcoin Core #34401
      (50:01 (javascript:void(0))50:01)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#bitcoin-core-35032)
      Bitcoin Core #35032
      (51:51 (javascript:void(0))51:51)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#core-lightning-9021)
      Core Lightning #9021
      (55:33 (javascript:void(0))55:33)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#core-lightning-9046)
      Core Lightning #9046
      (56:53 (javascript:void(0))56:53)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#ldk-4515)
      LDK #4515
      (58:25 (javascript:void(0))58:25)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#ldk-4558)
      LDK #4558
      (59:51 (javascript:void(0))59:51)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#lnd-9985)
      LND #9985
      (1:01:53 (javascript:void(0))1:01:53)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#btcpay-server-7250)
      BTCPay Server #7250
      (1:04:07 (javascript:void(0))1:04:07)



    

  

  
  
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      ● (https://bitcoinops.org/en/podcast/2026/04/21/#bips-2089)
      BIPs #2089
      (1:07:28 (javascript:void(0))1:07:28)

Transcription

transcription coming soon