[30.x] More Backports #36401

1. 
   fanquake commented at 4:35 PM on October 1, 2026: member

   Backports:

   • #36377
   • #36441
2. doc: add 461 (Deterministic ECDSA signatures with low-R grinding) to bips.md

   Github-Pull: #36377
   Rebased-From: d57346d682f17e6cf09f8acc5e7893ee16eec193

   528ee56171
3. fanquake added this to the milestone 30.4 on Oct 1, 2026
4. DrahtBot added the label Backport on Oct 1, 2026
5. 
   DrahtBot commented at 4:36 PM on October 1, 2026: contributor

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   External sites

   • Code coverage & benchmarks: https://corecheck.dev/bitcoin/bitcoin/pulls/36401
   • Ralph review <img src=https://review.fish.foo/assets/bitcoin/bitcoin/36401.png alt="Ralph review status"> https://git.fish.foo/bitcoin/bitcoin/pulls/36401#author-ralph

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6. 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

   c09191a0fd
7. doc: update 30.x release notes fe4a98b847
8. fanquake force-pushed on Oct 12, 2026
9. fanquake marked this as ready for review on Oct 21, 2026
10. fanquake requested review from willcl-ark on Oct 22, 2026
11. willcl-ark approved
12. 
    willcl-ark commented at 7:12 AM on October 22, 2026: member

    ACK fe4a98b8477ca4fcb49f6d5e92e0496ba64bc84d

    backports look good.

13. fanquake merged this on Oct 22, 2026
14. fanquake closed this on Oct 22, 2026

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15. fanquake deleted the branch on Oct 22, 2026

Milestone
30.4