From c7034f48544ec8be43d2574bf21d648deb41c2d1 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Wed, 6 May 2026 16:04:54 +0200
Subject: [PATCH 1/8] depends: Unset `SOURCE_DATE_EPOCH` in `gen_id` script

Github-Pull: #34228
Rebased-From: 9f7a2293c48f8afb5e87765a327a0c89fd21fa56
---
 depends/gen_id | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/depends/gen_id b/depends/gen_id
index 5504deeb0eb..b9104c43359 100755
--- a/depends/gen_id
+++ b/depends/gen_id
@@ -28,6 +28,10 @@
     # Redirect stderr to stdout
     exec 2>&1
 
+    # Unset SOURCE_DATE_EPOCH to prevent it from leaking into tool
+    # outputs and to maximize reuse of the built package cache.
+    unset SOURCE_DATE_EPOCH
+
     echo "BEGIN ALL"
 
     # Include any ID salts supplied via command line

From f92bd8b8ba08f2cd8bccf208e00d13bea355c1d6 Mon Sep 17 00:00:00 2001
From: junbyjun1238 <251473466+junbyjun1238@users.noreply.github.com>
Date: Thu, 14 May 2026 00:30:10 +0900
Subject: [PATCH 2/8] doc: mention -DWITH_ZMQ=ON in BSD build guides

The FreeBSD, NetBSD, and OpenBSD build guides state that ZMQ support is compiled in when the package is installed. Since WITH_ZMQ defaults to OFF, update the wording to mention the required CMake option.

Github-Pull: #35283
Rebased-From: ca93ab808c488324990eb91ed8297a37dd10d580
---
 doc/build-freebsd.md | 2 +-
 doc/build-netbsd.md  | 2 +-
 doc/build-openbsd.md | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/doc/build-freebsd.md b/doc/build-freebsd.md
index de373d1ecb1..40740d7fb7b 100644
--- a/doc/build-freebsd.md
+++ b/doc/build-freebsd.md
@@ -64,7 +64,7 @@ Otherwise, if you don't need QR encoding support, use the `-DWITH_QRENCODE=OFF`
 #### Notifications
 ###### ZeroMQ
 
-Bitcoin Core can provide notifications via ZeroMQ. If the package is installed, support will be compiled in.
+Bitcoin Core can provide notifications via ZeroMQ. To compile ZMQ support, install the following dependency and pass `-DWITH_ZMQ=ON` when configuring.
 ```bash
 pkg install libzmq4
 ```
diff --git a/doc/build-netbsd.md b/doc/build-netbsd.md
index 103e62568a4..4d4a23a6f55 100644
--- a/doc/build-netbsd.md
+++ b/doc/build-netbsd.md
@@ -82,7 +82,7 @@ Otherwise, if you don't need QR encoding support, use the `-DWITH_QRENCODE=OFF`
 #### Notifications
 ###### ZeroMQ
 
-Bitcoin Core can provide notifications via ZeroMQ. If the package is installed, support will be compiled in.
+Bitcoin Core can provide notifications via ZeroMQ. To compile ZMQ support, install the following dependency and pass `-DWITH_ZMQ=ON` when configuring.
 ```bash
 pkgin install zeromq
 ```
diff --git a/doc/build-openbsd.md b/doc/build-openbsd.md
index 4ea58795a05..5edc56f0bfc 100644
--- a/doc/build-openbsd.md
+++ b/doc/build-openbsd.md
@@ -64,7 +64,7 @@ Otherwise, if you don't need QR encoding support, use the `-DWITH_QRENCODE=OFF`
 #### Notifications
 ###### ZeroMQ
 
-Bitcoin Core can provide notifications via ZeroMQ. If the package is installed, support will be compiled in.
+Bitcoin Core can provide notifications via ZeroMQ. To compile ZMQ support, install the following dependency and pass `-DWITH_ZMQ=ON` when configuring.
 ```bash
 pkg_add zeromq
 ```

From 1dba05e7f6b188e2fb4183037aaf27cfb1bff916 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C5=91rinc?= <pap.lorinc@gmail.com>
Date: Wed, 6 May 2026 14:27:13 +0200
Subject: [PATCH 3/8] wallet: use outpoint when estimating input size

`CalculateMaximumSignedInputSize()` is passed the outpoint being sized, but that context was not used when estimating the signed input size.
Pass the outpoint through so externally selected inputs are not underestimated.

Co-authored-by: Antoine Poinsot <darosior@protonmail.com>

Github-Pull: #35228
Rebased-From: cd8d3bd937b5515ea000408eb07d2ae3cd1aa417
---
 src/wallet/spend.cpp            |  2 +-
 src/wallet/test/spend_tests.cpp | 17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/wallet/spend.cpp b/src/wallet/spend.cpp
index dc34060d729..9524e7a0bec 100644
--- a/src/wallet/spend.cpp
+++ b/src/wallet/spend.cpp
@@ -94,7 +94,7 @@ int CalculateMaximumSignedInputSize(const CTxOut& txout, const COutPoint outpoin
     if (!provider) return -1;
 
     if (const auto desc = InferDescriptor(txout.scriptPubKey, *provider)) {
-        if (const auto weight = MaxInputWeight(*desc, {}, coin_control, true, can_grind_r)) {
+        if (const auto weight = MaxInputWeight(*desc, CTxIn{outpoint}, coin_control, true, can_grind_r)) {
             return static_cast<int>(GetVirtualTransactionSize(*weight, 0, 0));
         }
     }
diff --git a/src/wallet/test/spend_tests.cpp b/src/wallet/test/spend_tests.cpp
index 963c0f838b1..ac76fe4dda0 100644
--- a/src/wallet/test/spend_tests.cpp
+++ b/src/wallet/test/spend_tests.cpp
@@ -3,6 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <consensus/amount.h>
+#include <key.h>
 #include <policy/fees.h>
 #include <script/solver.h>
 #include <validation.h>
@@ -16,6 +17,22 @@
 namespace wallet {
 BOOST_FIXTURE_TEST_SUITE(spend_tests, WalletTestingSetup)
 
+BOOST_AUTO_TEST_CASE(max_signed_input_size_uses_external_outpoint)
+{
+    const CKey key{GenerateRandomKey()};
+    FillableSigningProvider provider;
+    BOOST_REQUIRE(provider.AddKey(key));
+
+    const CTxOut txout{COIN, GetScriptForDestination(PKHash{key.GetPubKey()})};
+    const COutPoint outpoint{Txid{}, 0};
+    CCoinControl coin_control;
+    coin_control.Select(outpoint).SetTxOut(txout);
+
+    const int low_r{CalculateMaximumSignedInputSize(txout, COutPoint{}, &provider, /*can_grind_r=*/true, &coin_control)};
+    const int high_r{CalculateMaximumSignedInputSize(txout, outpoint, &provider, /*can_grind_r=*/true, &coin_control)};
+    BOOST_CHECK_EQUAL(high_r, low_r + 1);
+}
+
 BOOST_FIXTURE_TEST_CASE(SubtractFee, TestChain100Setup)
 {
     CreateAndProcessBlock({}, GetScriptForRawPubKey(coinbaseKey.GetPubKey()));

From c913cd9add9944bee684aadce4318b5869838faa Mon Sep 17 00:00:00 2001
From: Andrew Toth <andrewstoth@gmail.com>
Date: Tue, 19 May 2026 11:38:51 -0400
Subject: [PATCH 4/8] Disable seek compaction

Seek compaction is causing a cascade effect in the chainstate DB, causing large parts of the database to be rewritten every ~hour.

Every periodic flush writes around 2 MiB. Since this is roughly the `write_buffer_size`, these writes regularly cause the memtable to rotate into a small L0 file. This file has a small seek budget, and with the random UTXO reads done during validation, it can get scheduled for seek compaction quickly.

That seek compaction pushes the small file down to L1. Since most UTXOs are already lower down in L4/L5, many reads that consult this file do not find the key there and continue downward. The bloom filter makes those misses cheap, but LevelDB still decrements the file's seek budget. The file then gets scheduled for another seek compaction, and the same pattern pushes it down through L2 and L3.

The expensive part happens around L3/L4. L4 has many ~32 MiB files holding the bulk of the UTXO set. When LevelDB compacts into L3, it may split the output into many smaller L3 files to limit how much L4 "grandparent" data any one output overlaps. Each of these small L3 files then gets its own small seek budget. Because chainstate keys are hash-random, each small L3 file can still have a broad key range, so many random reads consult it and quickly drain its budget. Once seek-compacted into L4, each tiny L3 file can overlap many L4 files, so compacting a few hundred KiB from L3 can require rewriting hundreds of MiB from L4. Repeating that across many small L3 files can rewrite most of the chainstate.

This is a poor fit for chainstate because UTXO keys are hash-random, the DB is large enough to have many levels, writes are relatively small and periodic, and reads are frequent. The result is that read misses trigger compactions much earlier than size pressure would, and those compactions have very high write amplification.

Disabling seek compaction may leave more files in upper levels for longer, so reads could theoretically consult more files. But Bitcoin Core enables bloom filters for all its LevelDB instances, so these misses are usually cheap in-memory filter checks rather than disk reads.

For the other DBs, the risk is much smaller. They also use bloom filters, and most are smaller and less read-heavy. With fewer levels and less random read pressure, disabling seek compaction should have little effect there.

Co-authored-by: l0rinc <pap.lorinc@gmail.com>

Github-Pull: #35313
Rebased-From: 6bfdb6093bba4710d0f8313ed0113967a8b5176f
---
 src/leveldb/db/autocompact_test.cc | 18 ++++++++----------
 src/leveldb/db/db_test.cc          | 16 +++++++++-------
 src/leveldb/db/version_set.cc      | 17 +++++++----------
 3 files changed, 24 insertions(+), 27 deletions(-)

diff --git a/src/leveldb/db/autocompact_test.cc b/src/leveldb/db/autocompact_test.cc
index e6c97a05a6b..f6e714c6524 100644
--- a/src/leveldb/db/autocompact_test.cc
+++ b/src/leveldb/db/autocompact_test.cc
@@ -54,8 +54,8 @@ static const int kValueSize = 200 * 1024;
 static const int kTotalSize = 100 * 1024 * 1024;
 static const int kCount = kTotalSize / kValueSize;
 
-// Read through the first n keys repeatedly and check that they get
-// compacted (verified by checking the size of the key space).
+// Read through the first n keys repeatedly and check that reads do NOT
+// trigger compaction (seek compaction is disabled in this fork).
 void AutoCompactTest::DoReads(int n) {
   std::string value(kValueSize, 'x');
   DBImpl* dbi = reinterpret_cast<DBImpl*>(db_);
@@ -76,25 +76,23 @@ void AutoCompactTest::DoReads(int n) {
   const int64_t initial_size = Size(Key(0), Key(n));
   const int64_t initial_other_size = Size(Key(n), Key(kCount));
 
-  // Read until size drops significantly.
+  // Read repeatedly. The size of the read range must NOT shrink: with
+  // seek compaction disabled, reads never schedule a compaction.
   std::string limit_key = Key(n);
-  for (int read = 0; true; read++) {
-    ASSERT_LT(read, 100) << "Taking too long to compact";
+  for (int read = 0; read < 100; read++) {
     Iterator* iter = db_->NewIterator(ReadOptions());
     for (iter->SeekToFirst();
          iter->Valid() && iter->key().ToString() < limit_key; iter->Next()) {
       // Drop data
     }
     delete iter;
-    // Wait a little bit to allow any triggered compactions to complete.
-    Env::Default()->SleepForMicroseconds(1000000);
     uint64_t size = Size(Key(0), Key(n));
     fprintf(stderr, "iter %3d => %7.3f MB [other %7.3f MB]\n", read + 1,
             size / 1048576.0, Size(Key(n), Key(kCount)) / 1048576.0);
-    if (size <= initial_size / 10) {
-      break;
-    }
   }
+  // Give any background work a chance to run, even though none should.
+  Env::Default()->SleepForMicroseconds(1000000);
+  ASSERT_EQ(Size(Key(0), Key(n)), static_cast<uint64_t>(initial_size));
 
   // Verify that the size of the key space not touched by the reads
   // is pretty much unchanged.
diff --git a/src/leveldb/db/db_test.cc b/src/leveldb/db/db_test.cc
index 5ed9c1d75eb..48cc9373728 100644
--- a/src/leveldb/db/db_test.cc
+++ b/src/leveldb/db/db_test.cc
@@ -735,15 +735,14 @@ TEST(DBTest, GetPicksCorrectFile) {
   } while (ChangeOptions());
 }
 
-TEST(DBTest, GetEncountersEmptyLevel) {
+TEST(DBTest, GetDoesNotTriggerSeekCompaction) {
   do {
     // Arrange for the following to happen:
     //   * sstable A in level 0
     //   * nothing in level 1
     //   * sstable B in level 2
-    // Then do enough Get() calls to arrange for an automatic compaction
-    // of sstable A.  A bug would cause the compaction to be marked as
-    // occurring at level 1 (instead of the correct level 0).
+    // Seek compaction is disabled in this fork, so repeated reads must
+    // not change the level layout. A manual compaction must still work.
 
     // Step 1: First place sstables in levels 0 and 2
     int compaction_count = 0;
@@ -761,14 +760,17 @@ TEST(DBTest, GetEncountersEmptyLevel) {
     ASSERT_EQ(NumTableFilesAtLevel(1), 0);
     ASSERT_EQ(NumTableFilesAtLevel(2), 1);
 
-    // Step 3: read a bunch of times
+    // Step 3: many read misses must not schedule any compaction.
     for (int i = 0; i < 1000; i++) {
       ASSERT_EQ("NOT_FOUND", Get("missing"));
     }
-
-    // Step 4: Wait for compaction to finish
     DelayMilliseconds(1000);
+    ASSERT_EQ(NumTableFilesAtLevel(0), 1);
+    ASSERT_EQ(NumTableFilesAtLevel(1), 0);
+    ASSERT_EQ(NumTableFilesAtLevel(2), 1);
 
+    // Step 4: a manual compaction still moves the L0 file down.
+    dbfull()->TEST_CompactRange(0, nullptr, nullptr);
     ASSERT_EQ(NumTableFilesAtLevel(0), 0);
   } while (ChangeOptions());
 }
diff --git a/src/leveldb/db/version_set.cc b/src/leveldb/db/version_set.cc
index cd07346ea8a..8dc73295b84 100644
--- a/src/leveldb/db/version_set.cc
+++ b/src/leveldb/db/version_set.cc
@@ -400,16 +400,11 @@ Status Version::Get(const ReadOptions& options, const LookupKey& k,
   return state.found ? state.s : Status::NotFound(Slice());
 }
 
-bool Version::UpdateStats(const GetStats& stats) {
-  FileMetaData* f = stats.seek_file;
-  if (f != nullptr) {
-    f->allowed_seeks--;
-    if (f->allowed_seeks <= 0 && file_to_compact_ == nullptr) {
-      file_to_compact_ = f;
-      file_to_compact_level_ = stats.seek_file_level;
-      return true;
-    }
-  }
+bool Version::UpdateStats(const GetStats& /*stats*/) {
+  // Disable automatic compactions triggered by read seek counters.
+  // The heuristic was tuned for expensive random seeks and can create
+  // severe write amplification on large random-key databases.
+  // Size and manual compactions still run.
   return false;
 }
 
@@ -661,6 +656,8 @@ class VersionSet::Builder {
       // same as the compaction of 40KB of data.  We are a little
       // conservative and allow approximately one seek for every 16KB
       // of data before triggering a compaction.
+      //
+      // Note: seek compactions are disabled. See Version::UpdateStats.
       f->allowed_seeks = static_cast<int>((f->file_size / 16384U));
       if (f->allowed_seeks < 100) f->allowed_seeks = 100;
 

From 827f9343c4b4aa488a249f216cfb5480616d80cd Mon Sep 17 00:00:00 2001
From: will <will@256k1.dev>
Date: Mon, 11 May 2026 10:06:55 +0100
Subject: [PATCH 5/8] ci: switch runners from cirrus to warpbuild

Github-Pull: #35378
Rebased-From: 4bdd46ace37f02da062a53a2943caeddca4ed8f9
---
 .github/workflows/ci.yml | 40 ++++++++++++++++++++--------------------
 ci/README.md             |  8 ++++----
 2 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 59403bd3b16..1603de1a5ec 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,8 +19,7 @@ concurrency:
 
 env:
   CI_FAILFAST_TEST_LEAVE_DANGLING: 1  # GHA does not care about dangling processes and setting this variable avoids killing the CI script itself on error
-  CIRRUS_CACHE_HOST: http://127.0.0.1:12321/ # When using Cirrus Runners this host can be used by the docker `gha` build cache type.
-  REPO_USE_CIRRUS_RUNNERS: 'bitcoin/bitcoin' # Use cirrus runners and cache for this repo, instead of falling back to the slow GHA runners
+  REPO_USE_WARP_RUNNERS: 'bitcoin/bitcoin' # Use warp runners for this repo, instead of falling back to the slow GHA runners
 
 defaults:
   run:
@@ -37,9 +36,9 @@ jobs:
     steps:
       - id: runners
         run: |
-          if [[ "${REPO_USE_CIRRUS_RUNNERS}" == "${{ github.repository }}" ]]; then
-            echo "provider=cirrus" >> "$GITHUB_OUTPUT"
-            echo "::notice title=Runner Selection::Using Cirrus Runners"
+          if [[ "${REPO_USE_WARP_RUNNERS}" == "${{ github.repository }}" ]]; then
+            echo "provider=warp" >> "$GITHUB_OUTPUT"
+            echo "::notice title=Runner Selection::Using Warp Runners"
           else
             echo "provider=gha" >> "$GITHUB_OUTPUT"
             echo "::notice title=Runner Selection::Using GitHub-hosted runners"
@@ -47,7 +46,8 @@ jobs:
 
   test-each-commit:
     name: 'test each commit'
-    runs-on: ubuntu-24.04
+    needs: runners
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-8x' || 'ubuntu-24.04' }}
     if: github.event_name == 'pull_request' && github.event.pull_request.commits != 1
     timeout-minutes: 360  # Use maximum time, see https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#jobsjob_idtimeout-minutes. Assuming a worst case time of 1 hour per commit, this leads to a --max-count=6 below.
     env:
@@ -329,7 +329,7 @@ jobs:
   windows-cross:
     name: 'Linux->Windows cross, no tests'
     needs: runners
-    runs-on: ${{ needs.runners.outputs.provider == 'cirrus' && 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm' || 'ubuntu-24.04' }}
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-4x' || 'ubuntu-24.04' }}
     if: ${{ vars.SKIP_BRANCH_PUSH != 'true' || github.event_name == 'pull_request' }}
 
     env:
@@ -446,7 +446,7 @@ jobs:
   ci-matrix:
     name: ${{ matrix.name }}
     needs: runners
-    runs-on: ${{ needs.runners.outputs.provider == 'cirrus' && matrix.cirrus-runner || matrix.fallback-runner }}
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && matrix.warp-runner || matrix.fallback-runner }}
     if: ${{ vars.SKIP_BRANCH_PUSH != 'true' || github.event_name == 'pull_request' }}
     timeout-minutes: ${{ matrix.timeout-minutes }}
 
@@ -459,68 +459,68 @@ jobs:
       matrix:
         include:
           - name: '32 bit ARM, unit tests, no functional tests'
-            cirrus-runner: 'ubuntu-24.04-arm' # Cirrus' Arm runners are Apple (with virtual Linux aarch64), which doesn't support 32-bit mode
+            warp-runner: 'ubuntu-24.04-arm' # Warp's Arm runners don't support 32-bit mode currently
             fallback-runner: 'ubuntu-24.04-arm'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_arm.sh'
             provider: 'gha'
 
           - name: 'ASan + LSan + UBSan + integer, no depends, USDT'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md' # has to match container in ci/test/00_setup_env_native_asan.sh for tracing tools
+            warp-runner: 'warp-ubuntu-2404-x64-8x' # has to match container in ci/test/00_setup_env_native_asan.sh for tracing tools
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_asan.sh'
 
           - name: 'macOS-cross, gui, no tests'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
+            warp-runner: 'warp-ubuntu-latest-x64-4x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_mac_cross.sh'
 
           - name: 'No wallet, libbitcoinkernel'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
+            warp-runner: 'warp-ubuntu-latest-x64-4x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_nowallet_libbitcoinkernel.sh'
 
           - name: 'no IPC, i686, DEBUG'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
+            warp-runner: 'warp-ubuntu-latest-x64-8x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_i686_no_ipc.sh'
 
           - name: 'fuzzer,address,undefined,integer, no depends'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-lg'
+            warp-runner: 'warp-ubuntu-latest-x64-16x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 240
             file-env: './ci/test/00_setup_env_native_fuzz.sh'
 
           - name: 'previous releases, depends DEBUG'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
+            warp-runner: 'warp-ubuntu-latest-x64-16x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_previous_releases.sh'
 
           - name: 'CentOS, depends, gui'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-lg'
+            warp-runner: 'warp-ubuntu-latest-x64-16x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_centos.sh'
 
           - name: 'tidy'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
+            warp-runner: 'warp-ubuntu-latest-x64-8x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_tidy.sh'
 
           - name: 'TSan, depends, no gui'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
+            warp-runner: 'warp-ubuntu-latest-x64-8x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_tsan.sh'
 
           - name: 'MSan, depends'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-lg'
+            warp-runner: 'warp-ubuntu-latest-x64-16x'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_msan.sh'
@@ -560,7 +560,7 @@ jobs:
   lint:
     name: 'lint'
     needs: runners
-    runs-on: ${{ needs.runners.outputs.provider == 'cirrus' && 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-xs' || 'ubuntu-24.04' }}
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-2x' || 'ubuntu-24.04' }}
     if: ${{ vars.SKIP_BRANCH_PUSH != 'true' || github.event_name == 'pull_request' }}
     timeout-minutes: 20
     env:
diff --git a/ci/README.md b/ci/README.md
index 81e048ce687..8e69fa568c5 100644
--- a/ci/README.md
+++ b/ci/README.md
@@ -61,8 +61,8 @@ trigger cache-invalidation and rebuilds as necessary.
 
 To configure the primary repository, follow these steps:
 
-1. Register with [Cirrus Runners](https://cirrus-runners.app/) and purchase runners.
-2. Install the Cirrus Runners GitHub app against the GitHub organization.
+1. Register with [WarpBuild](https://www.warpbuild.com/) and purchase runners.
+2. Install the WarpBuild GitHub app against the GitHub organization.
 3. Enable organisation-level runners to be used in public repositories:
    1. `Org settings -> Actions -> Runner Groups -> Default -> Allow public repos`
 4. Permit the following actions to run:
@@ -76,5 +76,5 @@ To configure the primary repository, follow these steps:
 When used in a fork the CI will run on GitHub's free hosted runners by default.
 In this case, due to GitHub's 10GB-per-repo cache size limitations caches will be frequently evicted and missed, but the workflows will run (slowly).
 
-It is also possible to use your own Cirrus Runners in your own fork with an appropriate patch to the `REPO_USE_CIRRUS_RUNNERS` variable in ../.github/workflows/ci.yml
-NB that Cirrus Runners only work at an organisation level, therefore in order to use your own Cirrus Runners, *the fork must be within your own organisation*.
+It is also possible to use your own WarpBuild Runners in your own fork with an appropriate patch to the `REPO_USE_WARP_RUNNERS` variable in ../.github/workflows/ci.yml
+NB that WarpBuild Runners only work at an organisation level, therefore in order to use your own WarpBuild Runners, *the fork must be within your own organisation*.

From 922626571efbcf8f88f61fd96ffb0f2befd13b63 Mon Sep 17 00:00:00 2001
From: fanquake <fanquake@gmail.com>
Date: Fri, 29 May 2026 08:59:43 +0100
Subject: [PATCH 6/8] doc: remove reference to cirrus

Github-Pull: #35408
Rebased-From: 265563bf75c0b8b615e28d47398098020ff0b109
---
 .editorconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.editorconfig b/.editorconfig
index c5f3028c503..d7fe7ad5e24 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -13,7 +13,7 @@ trim_trailing_whitespace = true
 [*.{h,cpp,rs,py,sh}]
 indent_size = 4
 
-# .cirrus.yml, etc.
+# ci.yml, etc.
 [*.yml]
 indent_size = 2
 

From f074c479a55bf27033a413c0050716c568869ba7 Mon Sep 17 00:00:00 2001
From: fanquake <fanquake@gmail.com>
Date: Fri, 29 May 2026 09:03:07 +0100
Subject: [PATCH 7/8] ci: use ubuntu-latest instead of ubuntu-24.04

To match the usage of -latest for the warp runners.

Github-Pull: #35408
Rebased-From: 5700a61b73342b506b0114b342499da7642c1c10
---
 .github/workflows/ci.yml | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1603de1a5ec..d9337a501f6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,7 +47,7 @@ jobs:
   test-each-commit:
     name: 'test each commit'
     needs: runners
-    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-8x' || 'ubuntu-24.04' }}
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-8x' || 'ubuntu-latest' }}
     if: github.event_name == 'pull_request' && github.event.pull_request.commits != 1
     timeout-minutes: 360  # Use maximum time, see https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#jobsjob_idtimeout-minutes. Assuming a worst case time of 1 hour per commit, this leads to a --max-count=6 below.
     env:
@@ -329,7 +329,7 @@ jobs:
   windows-cross:
     name: 'Linux->Windows cross, no tests'
     needs: runners
-    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-4x' || 'ubuntu-24.04' }}
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-4x' || 'ubuntu-latest' }}
     if: ${{ vars.SKIP_BRANCH_PUSH != 'true' || github.event_name == 'pull_request' }}
 
     env:
@@ -467,61 +467,61 @@ jobs:
 
           - name: 'ASan + LSan + UBSan + integer, no depends, USDT'
             warp-runner: 'warp-ubuntu-2404-x64-8x' # has to match container in ci/test/00_setup_env_native_asan.sh for tracing tools
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_asan.sh'
 
           - name: 'macOS-cross, gui, no tests'
             warp-runner: 'warp-ubuntu-latest-x64-4x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_mac_cross.sh'
 
           - name: 'No wallet, libbitcoinkernel'
             warp-runner: 'warp-ubuntu-latest-x64-4x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_nowallet_libbitcoinkernel.sh'
 
           - name: 'no IPC, i686, DEBUG'
             warp-runner: 'warp-ubuntu-latest-x64-8x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_i686_no_ipc.sh'
 
           - name: 'fuzzer,address,undefined,integer, no depends'
             warp-runner: 'warp-ubuntu-latest-x64-16x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 240
             file-env: './ci/test/00_setup_env_native_fuzz.sh'
 
           - name: 'previous releases, depends DEBUG'
             warp-runner: 'warp-ubuntu-latest-x64-16x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_previous_releases.sh'
 
           - name: 'CentOS, depends, gui'
             warp-runner: 'warp-ubuntu-latest-x64-16x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_centos.sh'
 
           - name: 'tidy'
             warp-runner: 'warp-ubuntu-latest-x64-8x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_tidy.sh'
 
           - name: 'TSan, depends, no gui'
             warp-runner: 'warp-ubuntu-latest-x64-8x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_tsan.sh'
 
           - name: 'MSan, depends'
             warp-runner: 'warp-ubuntu-latest-x64-16x'
-            fallback-runner: 'ubuntu-24.04'
+            fallback-runner: 'ubuntu-latest'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_msan.sh'
 
@@ -560,7 +560,7 @@ jobs:
   lint:
     name: 'lint'
     needs: runners
-    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-2x' || 'ubuntu-24.04' }}
+    runs-on: ${{ needs.runners.outputs.provider == 'warp' && 'warp-ubuntu-latest-x64-2x' || 'ubuntu-latest' }}
     if: ${{ vars.SKIP_BRANCH_PUSH != 'true' || github.event_name == 'pull_request' }}
     timeout-minutes: 20
     env:

From f3320b316e3d6737a4608189c7b92c12ef8a50b5 Mon Sep 17 00:00:00 2001
From: fanquake <fanquake@gmail.com>
Date: Thu, 7 May 2026 11:30:06 +0200
Subject: [PATCH 8/8] doc: update release notes for v30.x

---
 doc/release-notes.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/doc/release-notes.md b/doc/release-notes.md
index e7627fde43a..9f9fac558fa 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -40,11 +40,21 @@ unsupported systems.
 Notable changes
 ===============
 
+
+### Validation
+
+- #35209 validation: correct lifetime of precomputed tx data
+
+### Leveldb
+
+- #61(bitcoin-core/leveldb): Disable seek compaction
+
 ### Wallet
 
 - #34358 wallet: fix removeprunedfunds bug with conflicting transactions
 - #34870 wallet: feebumper, fix crash when combined bump fee is unavailable
 - #34888 wallet: fix amount computed as boolean in coin selection
+- #35228 wallet: use outpoint when estimating input size
 
 ### Net
 
@@ -62,6 +72,7 @@ Notable changes
 
 ### Build
 
+- #34228 depends: Unset SOURCE_DATE_EPOCH in gen_id script
 - #34281 build: Temporarily remove confusing and brittle -fdebug-prefix-map
 - #34554 build: avoid exporting secp256k1 symbols
 - #34627 guix: use a temporary file over sponge, drop moreutils
@@ -97,6 +108,7 @@ Notable changes
 - #34702 doc: Fix fee field in getblock RPC result
 - #34706 doc: Improve dependencies.md IPC documentation
 - #34789 doc: update build guides pre v31
+- #35283 doc: mention -DWITH_ZMQ=ON in BSD build guides
 
 ### CI
 
@@ -107,6 +119,8 @@ Notable changes
 - #34802 ci: Bump GHA actions versions
 - #34815 ci: bump cirruslabs actions versions
 - #35202 ci: restore sockets in i686, no IPC job
+- #35378 ci: switch runners from cirrus to warpbuild
+- #35408 ci: 35378 followups
 
 ### Misc
 
@@ -118,6 +132,7 @@ Credits
 Thanks to everyone who directly contributed to this release:
 
 - ANAVHEOBA
+- andrewtoth
 - brunoerg
 - Cory Fields
 - Daniel Pfeifer
@@ -126,6 +141,7 @@ Thanks to everyone who directly contributed to this release:
 - furszy
 - Hennadii Stepanov
 - jayvaliya
+- junbyjun1238
 - kevkevinpal
 - Lőrinc
 - m3dwards