[28.x] Backports #34270

1. 
   fanquake commented at 10:41 am on January 13, 2026: member

   Backports:

   • #33723
   • #34227
2. Remove unreliable seed from chainparams.cpp, and the associated README

   Github-Pull: #33723
   Rebased-From: b0c706795ce6a3a00bf068a81ee99fef2ee9bf7e

   38d338dbcc
3. guix: Fix `osslsigncode` tests

   Github-Pull: #34227
   Rebased-From: 194114daf385a5db50e1507fda79a1a93240d494

   3dd011ee34
4. doc: update release notes for v28.x 514cf39533
5. fanquake added this to the milestone 28.4 on Jan 13, 2026
6. DrahtBot added the label Backport on Jan 13, 2026
7. 
   DrahtBot commented at 10:42 am on January 13, 2026: contributor

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

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/34270.

   Reviews

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   Type	Reviewers
   ACK	willcl-ark, marcofleon

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8. fanquake marked this as ready for review on Jan 13, 2026
9. fanquake requested review from marcofleon on Jan 13, 2026
10. willcl-ark approved
11. 
    willcl-ark commented at 3:09 pm on January 13, 2026: member

    ACK 514cf395335e96eb688f5a9256d79e569e846a04

    Clean backports. Have not tried a guix build with it though.

12. 
    marcofleon commented at 11:56 am on January 14, 2026: contributor

    crACK 514cf395335e96eb688f5a9256d79e569e846a04
13. fanquake merged this on Jan 14, 2026
14. fanquake closed this on Jan 14, 2026

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15. fanquake deleted the branch on Jan 14, 2026

Contributors
fanquake DrahtBot willcl-ark marcofleon

Labels
Backport

Milestone
28.4