stringintech · stringintech · Feb 2, 2026 · Feb 1, 2026 · Feb 1, 2026 · Feb 2, 2026
diff --git a/depend/bitcoin/.github/workflows/ci.yml b/depend/bitcoin/.github/workflows/ci.yml
@@ -258,7 +258,7 @@ jobs:
           sed -i '1s/^/set(ENV{CMAKE_POLICY_VERSION_MINIMUM} 3.5)\n/' "${VCPKG_INSTALLATION_ROOT}/scripts/ports.cmake"
 
       - name: vcpkg tools cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: C:/vcpkg/downloads/tools
           key: ${{ github.job }}-vcpkg-tools
@@ -320,12 +320,15 @@ jobs:
           BITCOIN_BIN: '${{ github.workspace }}\build\bin\Release\bitcoin.exe'
           BITCOIND: '${{ github.workspace }}\build\bin\Release\bitcoind.exe'
           BITCOINCLI: '${{ github.workspace }}\build\bin\Release\bitcoin-cli.exe'
+          BITCOIN_BENCH: '${{ github.workspace }}\build\bin\Release\bench_bitcoin.exe'
           BITCOINTX: '${{ github.workspace }}\build\bin\Release\bitcoin-tx.exe'
           BITCOINUTIL: '${{ github.workspace }}\build\bin\Release\bitcoin-util.exe'
           BITCOINWALLET: '${{ github.workspace }}\build\bin\Release\bitcoin-wallet.exe'
           BITCOINCHAINSTATE: '${{ github.workspace }}\build\bin\Release\bitcoin-chainstate.exe'
           TEST_RUNNER_EXTRA: ${{ github.event_name != 'pull_request' && '--extended' || '' }}
-        run: py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --ci --quiet --tmpdirprefix="${RUNNER_TEMP}" --combinedlogslen=99999999 --timeout-factor=${TEST_RUNNER_TIMEOUT_FACTOR} ${TEST_RUNNER_EXTRA}
+        run: |
+          py -3 -m pip install pyzmq
+          py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --quiet --tmpdirprefix="${RUNNER_TEMP}" --combinedlogslen=99999999 --timeout-factor=${TEST_RUNNER_TIMEOUT_FACTOR} ${TEST_RUNNER_EXTRA}
 
       - name: Clone corpora
         if: matrix.job-type == 'fuzz'
@@ -406,7 +409,7 @@ jobs:
         uses: ./.github/actions/save-caches
 
       - name: Upload built executables
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: ${{ matrix.artifact-name }}-${{ github.run_id }}
           path: |
@@ -444,7 +447,7 @@ jobs:
           ref: ${{ needs.record-frozen-commit.outputs.commit }}
 
       - name: Download built executables
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v7
         with:
           name: ${{ matrix.artifact-name }}-${{ github.run_id }}
 
@@ -483,9 +486,6 @@ jobs:
           ./src/univalue/object.exe
           ./src/univalue/unitester.exe
 
-      - name: Run benchmarks
-        run: ./bin/bench_bitcoin.exe -sanity-check
-
       - name: Adjust paths in test/config.ini
         shell: pwsh
         run: |
@@ -501,11 +501,18 @@ jobs:
 
       - name: Run functional tests
         env:
-          # TODO: Fix the excluded test and re-enable it.
-          # feature_unsupported_utxo_db.py fails on windows because of emojis in the test data directory
-          EXCLUDE: '--exclude wallet_multiwallet.py,feature_unsupported_utxo_db.py'
           TEST_RUNNER_EXTRA: ${{ github.event_name != 'pull_request' && '--extended' || '' }}
-        run: py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --ci --quiet --tmpdirprefix="$RUNNER_TEMP" --combinedlogslen=99999999 --timeout-factor=$TEST_RUNNER_TIMEOUT_FACTOR $EXCLUDE $TEST_RUNNER_EXTRA
+        run: |
+          py -3 -m pip install pyzmq
+          py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --quiet --tmpdirprefix="$RUNNER_TEMP" --combinedlogslen=99999999 --timeout-factor=$TEST_RUNNER_TIMEOUT_FACTOR $TEST_RUNNER_EXTRA \
+            `# feature_unsupported_utxo_db.py fails on Windows because of emojis in the test data directory.` \
+            --exclude feature_unsupported_utxo_db.py \
+            `# See https://github.com/bitcoin/bitcoin/issues/31409.` \
+            --exclude wallet_multiwallet.py
+          # Run feature_unsupported_utxo_db sequentially in ASCII-only tmp dir,
+          # because it is excluded above due to lack of UTF-8 support in the
+          # ancient release.
+          py -3 test/functional/feature_unsupported_utxo_db.py --previous-releases --tmpdir="${RUNNER_TEMP}/test_feature_unsupported_utxo_db"
 
   ci-matrix:
     name: ${{ matrix.name }}

diff --git a/depend/bitcoin/CMakeLists.txt b/depend/bitcoin/CMakeLists.txt
@@ -32,7 +32,7 @@ set(CLIENT_VERSION_MINOR 99)
 set(CLIENT_VERSION_BUILD 0)
 set(CLIENT_VERSION_RC 0)
 set(CLIENT_VERSION_IS_RELEASE "false")
-set(COPYRIGHT_YEAR "2025")
+set(COPYRIGHT_YEAR "2026")
 
 # During the enabling of the CXX and CXXOBJ languages, we modify
 # CMake's compiler/linker invocation strings by appending the content

diff --git a/depend/bitcoin/COPYING b/depend/bitcoin/COPYING
@@ -1,7 +1,7 @@
 The MIT License (MIT)
 
-Copyright (c) 2009-2025 The Bitcoin Core developers
-Copyright (c) 2009-2025 Bitcoin Developers
+Copyright (c) 2009-2026 The Bitcoin Core developers
+Copyright (c) 2009-2026 Bitcoin Developers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

diff --git a/depend/bitcoin/ci/test/00_setup_env_arm.sh b/depend/bitcoin/ci/test/00_setup_env_arm.sh
@@ -10,10 +10,8 @@ export HOST=arm-linux-gnueabihf
 export DPKG_ADD_ARCH="armhf"
 export PACKAGES="python3-zmq g++-arm-linux-gnueabihf libc6:armhf libstdc++6:armhf libfontconfig1:armhf libxcb1:armhf"
 export CONTAINER_NAME=ci_arm_linux
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"  # Check that https://packages.ubuntu.com/noble/g++-arm-linux-gnueabihf (version 13.x, similar to guix) can cross-compile
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"  # Check that https://packages.debian.org/trixie/g++-arm-linux-gnueabihf (version 14.x, similar to guix) can cross-compile
 export CI_IMAGE_PLATFORM="linux/arm64"
-export RUN_UNIT_TESTS=true
-export RUN_FUNCTIONAL_TESTS=false
 export GOAL="install"
 export CI_LIMIT_STACK_SIZE=1
 # -Wno-psabi is to disable ABI warnings: "note: parameter passing for argument of type ... changed in GCC 7.1"

diff --git a/depend/bitcoin/ci/test/00_setup_env_i686_no_ipc.sh b/depend/bitcoin/ci/test/00_setup_env_i686_no_ipc.sh
@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export HOST=i686-pc-linux-gnu
 export CONTAINER_NAME=ci_i686_no_multiprocess
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"
 export CI_IMAGE_PLATFORM="linux/amd64"
 export PACKAGES="llvm clang g++-multilib"
 export DEP_OPTS="DEBUG=1 NO_IPC=1"

diff --git a/depend/bitcoin/ci/test/00_setup_env_native_fuzz_with_valgrind.sh b/depend/bitcoin/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
@@ -6,7 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"
 export CONTAINER_NAME=ci_native_fuzz_valgrind
 export PACKAGES="libevent-dev libboost-dev libsqlite3-dev valgrind libcapnp-dev capnproto"
 export NO_DEPENDS=1

diff --git a/depend/bitcoin/ci/test/00_setup_env_native_valgrind.sh b/depend/bitcoin/ci/test/00_setup_env_native_valgrind.sh
@@ -6,14 +6,14 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"
 export CONTAINER_NAME=ci_native_valgrind
 export PACKAGES="valgrind python3-zmq libevent-dev libboost-dev libzmq3-dev libsqlite3-dev libcapnp-dev capnproto python3-pip"
 export PIP_PACKAGES="--break-system-packages pycapnp"
 export USE_VALGRIND=1
 export NO_DEPENDS=1
 # bind tests excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
-export TEST_RUNNER_EXTRA="--exclude rpc_bind,feature_bind_extra"
+export TEST_RUNNER_EXTRA="--exclude rpc_bind --exclude feature_bind_extra"
 export GOAL="install"
 # TODO enable GUI
 export BITCOIN_CONFIG="\

diff --git a/depend/bitcoin/ci/test/00_setup_env_s390x.sh b/depend/bitcoin/ci/test/00_setup_env_s390x.sh
@@ -9,9 +9,10 @@ export LC_ALL=C.UTF-8
 export HOST=s390x-linux-gnu
 export PACKAGES="python3-zmq"
 export CONTAINER_NAME=ci_s390x
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"
 export CI_IMAGE_PLATFORM="linux/s390x"
-export TEST_RUNNER_EXTRA="--exclude rpc_bind,feature_bind_extra"  # Excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
+# bind tests excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
+export TEST_RUNNER_EXTRA="--exclude rpc_bind --exclude feature_bind_extra"
 export RUN_FUNCTIONAL_TESTS=true
 export GOAL="install"
 export BITCOIN_CONFIG="\

diff --git a/depend/bitcoin/ci/test/00_setup_env_win64_msvcrt.sh b/depend/bitcoin/ci/test/00_setup_env_win64_msvcrt.sh
@@ -7,7 +7,7 @@
 export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_win64_msvcrt
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"  # Check that https://packages.ubuntu.com/noble/g++-mingw-w64-x86-64-posix (version 13.x, similar to guix) can cross-compile
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"  # Check that https://packages.debian.org/trixie/g++-mingw-w64-x86-64-posix (version 14.x, similar to guix) can cross-compile
 export HOST=x86_64-w64-mingw32
 export PACKAGES="g++-mingw-w64-x86-64-posix nsis"
 export RUN_UNIT_TESTS=false

diff --git a/depend/bitcoin/ci/test/01_iwyu.patch b/depend/bitcoin/ci/test/01_iwyu.patch
@@ -539,10 +539,11 @@ See: https://github.com/include-what-you-use/include-what-you-use/blob/clang_21/
  };
 
  const IncludeMapEntry stdlib_c_include_map[] = {
-@@ -601,31 +601,31 @@ const IncludeMapEntry stdlib_c_include_map[] = {
+@@ -600,32 +600,32 @@ const IncludeMapEntry stdlib_c_include_map[] = {
+   // https://github.com/cplusplus/draft/blob/c+%2B20/source/lib-intro.tex
    //
    // $ curl -s -N https://raw.githubusercontent.com/cplusplus/draft/c%2B%2B20/source/lib-intro.tex | sed -n '/begin{multicolfloattable}.*{headers.cpp.c}/,/end{multicolfloattable}/p' | grep tcode | perl -nle 'm/tcode{<c(.*)>}/ && print qq@  { "<$1.h>", kPublic, "<c$1>", kPublic },@' | sort
-   { "<assert.h>", kPublic, "<cassert>", kPublic },
+-  { "<assert.h>", kPublic, "<cassert>", kPublic },
 -  { "<complex.h>", kPublic, "<ccomplex>", kPublic },
 -  { "<ctype.h>", kPublic, "<cctype>", kPublic },
 -  { "<errno.h>", kPublic, "<cerrno>", kPublic },
@@ -568,6 +569,7 @@ See: https://github.com/include-what-you-use/include-what-you-use/blob/clang_21/
 -  { "<uchar.h>", kPublic, "<cuchar>", kPublic },
 -  { "<wchar.h>", kPublic, "<cwchar>", kPublic },
 -  { "<wctype.h>", kPublic, "<cwctype>", kPublic },
++  { "<assert.h>", kPrivate, "<cassert>", kPublic },
 +  { "<complex.h>", kPrivate, "<ccomplex>", kPublic },
 +  { "<ctype.h>", kPrivate, "<cctype>", kPublic },
 +  { "<errno.h>", kPrivate, "<cerrno>", kPublic },

diff --git a/depend/bitcoin/ci/test/03_test_script.sh b/depend/bitcoin/ci/test/03_test_script.sh
@@ -184,7 +184,7 @@ if [ "$RUN_FUNCTIONAL_TESTS" = "true" ]; then
   eval "TEST_RUNNER_EXTRA=($TEST_RUNNER_EXTRA)"
   LD_LIBRARY_PATH="${DEPENDS_DIR}/${HOST}/lib" \
   "${BASE_BUILD_DIR}/test/functional/test_runner.py" \
-    --ci "${MAKEJOBS}" \
+    "${MAKEJOBS}" \
     --tmpdirprefix "${BASE_SCRATCH_DIR}/test_runner/" \
     --ansi \
     --combinedlogslen=99999999 \
@@ -215,7 +215,7 @@ fi
 
 if [[ "${RUN_IWYU}" == true ]]; then
   # TODO: Consider enforcing IWYU across the entire codebase.
-  FILES_WITH_ENFORCED_IWYU="/src/((crypto|index)/.*\\.cpp|node/blockstorage.cpp|node/utxo_snapshot.cpp|core_read.cpp|signet.cpp|kernel/chain.cpp)"
+  FILES_WITH_ENFORCED_IWYU="/src/((crypto|index|kernel)/.*\\.cpp|node/blockstorage.cpp|node/utxo_snapshot.cpp|core_io.cpp|signet.cpp)"
   jq --arg patterns "$FILES_WITH_ENFORCED_IWYU" 'map(select(.file | test($patterns)))' "${BASE_BUILD_DIR}/compile_commands.json" > "${BASE_BUILD_DIR}/compile_commands_iwyu_errors.json"
   jq --arg patterns "$FILES_WITH_ENFORCED_IWYU" 'map(select(.file | test($patterns) | not))' "${BASE_BUILD_DIR}/compile_commands.json" > "${BASE_BUILD_DIR}/compile_commands_iwyu_warnings.json"
 

diff --git a/depend/bitcoin/contrib/debian/copyright b/depend/bitcoin/contrib/debian/copyright
@@ -5,7 +5,7 @@ Upstream-Contact: Satoshi Nakamoto <satoshin@gmx.com>
 Source: https://github.com/bitcoin/bitcoin
 
 Files: *
-Copyright: 2009-2025, Bitcoin Core Developers
+Copyright: 2009-2026, Bitcoin Core Developers
 License: Expat
 Comment: The Bitcoin Core Developers encompasses all contributors to the
          project, listed in the release notes or the git log.

diff --git a/depend/bitcoin/contrib/devtools/README.md b/depend/bitcoin/contrib/devtools/README.md
@@ -61,65 +61,6 @@ the script should be called from the git root folder as follows.
 git diff -U0 HEAD~1.. | ./contrib/devtools/clang-format-diff.py -p1 -i -v
 ```
 
-copyright\_header.py
-====================
-
-Provides utilities for managing copyright headers of `The Bitcoin Core
-developers` in repository source files. It has three subcommands:
-
-```
-$ ./copyright_header.py report <base_directory> [verbose]
-$ ./copyright_header.py update <base_directory>
-$ ./copyright_header.py insert <file>
-```
-Running these subcommands without arguments displays a usage string.
-
-copyright\_header.py report \<base\_directory\> [verbose]
----------------------------------------------------------
-
-Produces a report of all copyright header notices found inside the source files
-of a repository. Useful to quickly visualize the state of the headers.
-Specifying `verbose` will list the full filenames of files of each category.
-
-copyright\_header.py update \<base\_directory\> [verbose]
----------------------------------------------------------
-Updates all the copyright headers of `The Bitcoin Core developers` which were
-changed in a year more recent than is listed. For example:
-```
-// Copyright (c) <firstYear>-<lastYear> The Bitcoin Core developers
-```
-will be updated to:
-```
-// Copyright (c) <firstYear>-<lastModifiedYear> The Bitcoin Core developers
-```
-where `<lastModifiedYear>` is obtained from the `git log` history.
-
-This subcommand also handles copyright headers that have only a single year. In
-those cases:
-```
-// Copyright (c) <year> The Bitcoin Core developers
-```
-will be updated to:
-```
-// Copyright (c) <year>-<lastModifiedYear> The Bitcoin Core developers
-```
-where the update is appropriate.
-
-copyright\_header.py insert \<file\>
-------------------------------------
-Inserts a copyright header for `The Bitcoin Core developers` at the top of the
-file in either Python or C++ style as determined by the file extension. If the
-file is a Python file and it has  `#!` starting the first line, the header is
-inserted in the line below it.
-
-The copyright dates will be set to be `<year_introduced>-<current_year>` where
-`<year_introduced>` is according to the `git log` history. If
-`<year_introduced>` is equal to `<current_year>`, it will be set as a single
-year rather than two hyphenated years.
-
-If the file already has a copyright for `The Bitcoin Core developers`, the
-script will exit.
-
 gen-manpages.py
 ===============
 

diff --git a/depend/bitcoin/contrib/devtools/circular-dependencies.py b/depend/bitcoin/contrib/devtools/circular-dependencies.py
@@ -6,11 +6,6 @@
 import sys
 import re
 
-MAPPING = {
-    'core_read.cpp': 'core_io.cpp',
-    'core_write.cpp': 'core_io.cpp',
-}
-
 # Directories with header-based modules, where the assumption that .cpp files
 # define functions and variables declared in corresponding .h files is
 # incorrect.
@@ -19,8 +14,6 @@
 ]
 
 def module_name(path):
-    if path in MAPPING:
-        path = MAPPING[path]
     if any(path.startswith(dirpath) for dirpath in HEADER_MODULE_PATHS):
         return path
     if path.endswith(".h"):