[31.x] More Backports #36319

1. 
   fanquake commented at 4:14 PM on September 23, 2026: member

   Backports:

   • #36309
   • #36377
   • #36441
2. doc: scope claims about private broadcast feature

   Reframe in terms of risk reduction rather than absolutes
   
   Github-Pull: #36309
   Rebased-From: 2630d8e6c9d60579372c019e4b2cc7e73163a5d8

   d1e2b3e56b
3. private broadcast: mark feature as experimental

   Github-Pull: #36309
   Rebased-From: f41372998377ab8310476f0c03294e69cc3222e8

   6701d7c329
4. fanquake added this to the milestone 31.2 on Sep 23, 2026
5. DrahtBot added the label Backport on Sep 23, 2026
6. 
   DrahtBot commented at 4:14 PM on September 23, 2026: contributor

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   External sites

   • Code coverage & benchmarks: https://corecheck.dev/bitcoin/bitcoin/pulls/36319
   • Ralph review <img src=https://review.fish.foo/assets/bitcoin/bitcoin/36319.png alt="Ralph review status"> https://git.fish.foo/bitcoin/bitcoin/pulls/36319#author-ralph

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7. 
   achow101 commented at 5:00 PM on September 23, 2026: member

   Can this include #35445 and #36230?

8. doc: add 461 (Deterministic ECDSA signatures with low-R grinding) to bips.md

   Github-Pull: #36377
   Rebased-From: d57346d682f17e6cf09f8acc5e7893ee16eec193

   6295ab7a2d
9. fanquake force-pushed on Sep 30, 2026
10. doc: fix How to Upgrade section for bitcoin wrapper and libexec

    Since #31375, Linux installs ship a bitcoin wrapper in bin/ that dispatches to multiprocess binaries in libexec/. Copying only bitcoind/bitcoin-qt leaves those stale. Tell users to copy over bin/ and libexec/ instead.
    
    Fixes #36431.
    
    Github-Pull: #36441
    Rebased-From: 2870608661149b0a97ff7ec5b0bd25cc0c010f4d

    655cf21b8c
11. doc: update release notes for v31.x be68f847d4
12. fanquake force-pushed on Oct 12, 2026

Milestone
31.2