[29.x] Backports #36604

1. 
   fanquake commented at 10:41 AM on October 22, 2026: member

   Backports:

   • #34252
   • #36377
2. doc: add 433 (Pay to Anchor) to bips.md

   Github-Pull: #34252
   Rebased-From: 44b12cdb11f0fd3264f24f537a5d6989e4fe96a9

   db5d48a8ee
3. doc: add 461 (Deterministic ECDSA signatures with low-R grinding) to bips.md

   Github-Pull: #36377
   Rebased-From: d57346d682f17e6cf09f8acc5e7893ee16eec193

   6756083790
4. DrahtBot added the label Backport on Oct 22, 2026
5. 
   DrahtBot commented at 10:41 AM on October 22, 2026: contributor

   <!--e57a25ab6845829454e8d69fc972939a-->

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   <!--006a51241073e994b41acfe9ec718e94-->

   External sites

   • Code coverage & benchmarks: https://corecheck.dev/bitcoin/bitcoin/pulls/36604
   • Ralph review <img src=https://review.fish.foo/assets/bitcoin/bitcoin/36604.png alt="Ralph review status"> https://git.fish.foo/bitcoin/bitcoin/pulls/36604#author-ralph

   <!--021abf342d371248e50ceaed478a90ca-->

   Reviews

   See the guideline and AI policy for information on the review process.

   Type	Reviewers
   ACK	willcl-ark

   If your review is incorrectly listed, please copy-paste <code>&lt;!--meta-tag:bot-skip--&gt;</code> into the comment that the bot should ignore.

   <!--5faf32d7da4f0f540f40219e4f7537a3-->

6. doc: update release notes for v29.x fc74e9965d
7. fanquake force-pushed on Oct 22, 2026
8. fanquake marked this as ready for review on Oct 22, 2026
9. fanquake requested review from willcl-ark on Oct 23, 2026
10. willcl-ark approved
11. 
    willcl-ark commented at 11:27 AM on October 26, 2026: member

    ACK fc74e9965debc76b201cdf16ceb72966bce85208

    #36377 conflict is dropping BIP434 context as this doesnt' exist in 29.x.

    everything else looks fine.

12. fanquake merged this on Oct 26, 2026
13. fanquake closed this on Oct 26, 2026

    ---

14. fanquake deleted the branch on Oct 26, 2026
15. fanquake added this to the milestone 29.5 on Oct 26, 2026

Milestone
29.5