diff --git a/Makefile.am b/Makefile.am
index af63cf0cbbc..9f50e51ce0b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -206,6 +206,7 @@ LCOV_FILTER_PATTERN = \
 	-p "src/bench/" \
 	-p "src/univalue" \
 	-p "src/crypto/ctaes" \
+	-p "src/minisketch" \
 	-p "src/secp256k1" \
 	-p "depends"
 
diff --git a/ci/lint/06_script.sh b/ci/lint/06_script.sh
index f7dacd8512f..90f8a6e7c8d 100755
--- a/ci/lint/06_script.sh
+++ b/ci/lint/06_script.sh
@@ -17,6 +17,7 @@ export COMMIT_RANGE
 # check with -r to not have to fetch all the remotes.
 test/lint/git-subtree-check.sh src/crypto/ctaes
 test/lint/git-subtree-check.sh src/secp256k1
+test/lint/git-subtree-check.sh src/minisketch
 test/lint/git-subtree-check.sh src/univalue
 test/lint/git-subtree-check.sh src/leveldb
 test/lint/git-subtree-check.sh src/crc32c
diff --git a/ci/test/wrap-qemu.sh b/ci/test/wrap-qemu.sh
index 2cd7c8cec29..de07fa32c63 100755
--- a/ci/test/wrap-qemu.sh
+++ b/ci/test/wrap-qemu.sh
@@ -6,7 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
-for b_name in {"${BASE_OUTDIR}/bin"/*,src/secp256k1/*tests,src/univalue/{no_nul,test_json,unitester,object}}; do
+for b_name in {"${BASE_OUTDIR}/bin"/*,src/secp256k1/*tests,src/minisketch/test{,-verify},src/univalue/{no_nul,test_json,unitester,object}}; do
     # shellcheck disable=SC2044
     for b in $(find "${BASE_ROOT_DIR}" -executable -type f -name $(basename $b_name)); do
       echo "Wrap $b ..."
diff --git a/ci/test/wrap-wine.sh b/ci/test/wrap-wine.sh
index 82964897e13..3b2259028b1 100755
--- a/ci/test/wrap-wine.sh
+++ b/ci/test/wrap-wine.sh
@@ -6,7 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
-for b_name in {"${BASE_OUTDIR}/bin"/*,src/secp256k1/*tests,src/univalue/{no_nul,test_json,unitester,object}}.exe; do
+for b_name in {"${BASE_OUTDIR}/bin"/*,src/secp256k1/*tests,src/minisketch/test{,-verify},src/univalue/{no_nul,test_json,unitester,object}}.exe; do
     # shellcheck disable=SC2044
     for b in $(find "${BASE_ROOT_DIR}" -executable -type f -name "$(basename $b_name)"); do
       if (file "$b" | grep "Windows"); then
diff --git a/contrib/devtools/copyright_header.py b/contrib/devtools/copyright_header.py
index 9a555c70bb4..d6914bf6553 100755
--- a/contrib/devtools/copyright_header.py
+++ b/contrib/devtools/copyright_header.py
@@ -33,6 +33,7 @@ EXCLUDE_DIRS = [
     # git subtrees
     "src/crypto/ctaes/",
     "src/leveldb/",
+    "src/minisketch",
     "src/secp256k1/",
     "src/univalue/",
     "src/crc32c/",
diff --git a/doc/developer-notes.md b/doc/developer-notes.md
index a05ea93a46f..7ff1d36442c 100644
--- a/doc/developer-notes.md
+++ b/doc/developer-notes.md
@@ -1029,6 +1029,9 @@ Current subtrees include:
   - Subtree at https://github.com/bitcoin-core/univalue-subtree ; maintained by Core contributors.
   - Deviates from upstream https://github.com/jgarzik/univalue.
 
+- src/minisketch
+  - Upstream at https://github.com/sipa/minisketch ; maintained by Core contributors.
+
 Upgrading LevelDB
 ---------------------
 
diff --git a/src/Makefile.am b/src/Makefile.am
index cca66b35d96..f8644280cb9 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -15,7 +15,7 @@ AM_LIBTOOLFLAGS = --preserve-dup-deps
 PTHREAD_FLAGS = $(PTHREAD_CFLAGS) $(PTHREAD_LIBS)
 EXTRA_LIBRARIES =
 
-BITCOIN_INCLUDES=-I$(builddir) -I$(srcdir)/secp256k1/include -I$(srcdir)/$(UNIVALUE_INCLUDE_DIR_INT) $(BDB_CPPFLAGS) $(BOOST_CPPFLAGS) $(LEVELDB_CPPFLAGS)
+BITCOIN_INCLUDES=-I$(builddir) -I$(srcdir)/$(MINISKETCH_INCLUDE_DIR_INT) -I$(srcdir)/secp256k1/include -I$(srcdir)/$(UNIVALUE_INCLUDE_DIR_INT) $(BDB_CPPFLAGS) $(BOOST_CPPFLAGS) $(LEVELDB_CPPFLAGS)
 
 LIBBITCOIN_SERVER=libbitcoin_server.a
 LIBBITCOIN_COMMON=libbitcoin_common.a
diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index 27f93826313..f1a78bcc826 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -188,7 +188,7 @@ test_test_bitcoin_LDADD += $(LIBBITCOIN_WALLET)
 endif
 
 test_test_bitcoin_LDADD += $(LIBBITCOIN_SERVER) $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) $(LIBBITCOIN_CONSENSUS) $(LIBBITCOIN_CRYPTO) $(LIBUNIVALUE) \
-  $(LIBLEVELDB) $(LIBLEVELDB_SSE42) $(LIBMEMENV) $(BOOST_LIBS) $(BOOST_UNIT_TEST_FRAMEWORK_LIB) $(LIBSECP256K1) $(EVENT_LIBS) $(EVENT_PTHREADS_LIBS)
+  $(LIBLEVELDB) $(LIBLEVELDB_SSE42) $(LIBMEMENV) $(BOOST_LIBS) $(BOOST_UNIT_TEST_FRAMEWORK_LIB) $(LIBSECP256K1) $(EVENT_LIBS) $(EVENT_PTHREADS_LIBS) $(MINISKETCH_LIBS)
 test_test_bitcoin_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 
 test_test_bitcoin_LDADD += $(BDB_LIBS) $(MINIUPNPC_LIBS) $(NATPMP_LIBS) $(SQLITE_LIBS)
diff --git a/test/lint/README.md b/test/lint/README.md
index c4d76eac945..f4165f908e8 100644
--- a/test/lint/README.md
+++ b/test/lint/README.md
@@ -31,6 +31,7 @@ maintained:
 * for `src/univalue`: https://github.com/bitcoin-core/univalue-subtree.git (branch master)
 * for `src/crypto/ctaes`: https://github.com/bitcoin-core/ctaes.git (branch master)
 * for `src/crc32c`: https://github.com/bitcoin-core/crc32c-subtree.git (branch bitcoin-fork)
+* for `src/minisketch`: https://github.com/sipa/minisketch.git (branch master)
 
 To do so, add the upstream repository as remote:
 
diff --git a/test/lint/extended-lint-cppcheck.sh b/test/lint/extended-lint-cppcheck.sh
index 0ab6aad50ce..1f72aef80e5 100755
--- a/test/lint/extended-lint-cppcheck.sh
+++ b/test/lint/extended-lint-cppcheck.sh
@@ -73,7 +73,7 @@ function join_array {
 
 ENABLED_CHECKS_REGEXP=$(join_array "|" "${ENABLED_CHECKS[@]}")
 IGNORED_WARNINGS_REGEXP=$(join_array "|" "${IGNORED_WARNINGS[@]}")
-WARNINGS=$(git ls-files -- "*.cpp" "*.h" ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" | \
+WARNINGS=$(git ls-files -- "*.cpp" "*.h" ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/secp256k1/" ":(exclude)src/minisketch/" ":(exclude)src/univalue/" | \
     xargs cppcheck --enable=all -j "$(getconf _NPROCESSORS_ONLN)" --language=c++ --std=c++17 --template=gcc -D__cplusplus -DCLIENT_VERSION_BUILD -DCLIENT_VERSION_IS_RELEASE -DCLIENT_VERSION_MAJOR -DCLIENT_VERSION_MINOR -DCOPYRIGHT_YEAR -DDEBUG -I src/ -q 2>&1 | sort -u | \
     grep -E "${ENABLED_CHECKS_REGEXP}" | \
     grep -vE "${IGNORED_WARNINGS_REGEXP}")
diff --git a/test/lint/lint-files.py b/test/lint/lint-files.py
index 400921e5f39..68b795eef7d 100755
--- a/test/lint/lint-files.py
+++ b/test/lint/lint-files.py
@@ -19,7 +19,7 @@ CMD_SHEBANG_FILES = "git grep --full-name --line-number -I '^#!'"
 ALLOWED_FILENAME_REGEXP = "^[a-zA-Z0-9/_.@][a-zA-Z0-9/_.@-]*$"
 ALLOWED_SOURCE_FILENAME_REGEXP = "^[a-z0-9_./-]+$"
 ALLOWED_SOURCE_FILENAME_EXCEPTION_REGEXP = (
-    "^src/(secp256k1/|univalue/|test/fuzz/FuzzedDataProvider.h)"
+    "^src/(secp256k1/|minisketch/|univalue/|test/fuzz/FuzzedDataProvider.h)"
 )
 ALLOWED_PERMISSION_NON_EXECUTABLES = 644
 ALLOWED_PERMISSION_EXECUTABLES = 755
diff --git a/test/lint/lint-format-strings.sh b/test/lint/lint-format-strings.sh
index cb3ec09ae6e..d98f12b1a1b 100755
--- a/test/lint/lint-format-strings.sh
+++ b/test/lint/lint-format-strings.sh
@@ -34,7 +34,7 @@ if ! python3 -m doctest test/lint/lint-format-strings.py; then
 fi
 for S in "${FUNCTION_NAMES_AND_NUMBER_OF_LEADING_ARGUMENTS[@]}"; do
     IFS="," read -r FUNCTION_NAME SKIP_ARGUMENTS <<< "${S}"
-    for MATCHING_FILE in $(git grep --full-name -l "${FUNCTION_NAME}" -- "*.c" "*.cpp" "*.h" | sort | grep -vE "^src/(leveldb|secp256k1|tinyformat|univalue|test/fuzz/strprintf.cpp)"); do
+    for MATCHING_FILE in $(git grep --full-name -l "${FUNCTION_NAME}" -- "*.c" "*.cpp" "*.h" | sort | grep -vE "^src/(leveldb|secp256k1|minisketch|tinyformat|univalue|test/fuzz/strprintf.cpp)"); do
         MATCHING_FILES+=("${MATCHING_FILE}")
     done
     if ! test/lint/lint-format-strings.py --skip-arguments "${SKIP_ARGUMENTS}" "${FUNCTION_NAME}" "${MATCHING_FILES[@]}"; then
diff --git a/test/lint/lint-include-guards.sh b/test/lint/lint-include-guards.sh
index c23b903bce1..ac2177bbe3b 100755
--- a/test/lint/lint-include-guards.sh
+++ b/test/lint/lint-include-guards.sh
@@ -10,7 +10,7 @@ export LC_ALL=C
 HEADER_ID_PREFIX="BITCOIN_"
 HEADER_ID_SUFFIX="_H"
 
-REGEXP_EXCLUDE_FILES_WITH_PREFIX="src/(crypto/ctaes/|leveldb/|crc32c/|secp256k1/|test/fuzz/FuzzedDataProvider.h|tinyformat.h|bench/nanobench.h|univalue/)"
+REGEXP_EXCLUDE_FILES_WITH_PREFIX="src/(crypto/ctaes/|leveldb/|crc32c/|secp256k1/|minisketch/|test/fuzz/FuzzedDataProvider.h|tinyformat.h|bench/nanobench.h|univalue/)"
 
 EXIT_CODE=0
 for HEADER_FILE in $(git ls-files -- "*.h" | grep -vE "^${REGEXP_EXCLUDE_FILES_WITH_PREFIX}")
diff --git a/test/lint/lint-includes.sh b/test/lint/lint-includes.sh
index bf7aeb5b4f9..e9893558e4e 100755
--- a/test/lint/lint-includes.sh
+++ b/test/lint/lint-includes.sh
@@ -9,7 +9,7 @@
 # Check includes: Check for duplicate includes. Enforce bracket syntax includes.
 
 export LC_ALL=C
-IGNORE_REGEXP="/(leveldb|secp256k1|univalue|crc32c)/"
+IGNORE_REGEXP="/(leveldb|secp256k1|minisketch|univalue|crc32c)/"
 
 # cd to root folder of git repo for git ls-files to work properly
 cd "$(dirname $0)/../.." || exit 1
diff --git a/test/lint/lint-locale-dependence.sh b/test/lint/lint-locale-dependence.sh
index b119cffec80..712808c748c 100755
--- a/test/lint/lint-locale-dependence.sh
+++ b/test/lint/lint-locale-dependence.sh
@@ -48,7 +48,7 @@ KNOWN_VIOLATIONS=(
     "src/torcontrol.cpp:.*strtol"
 )
 
-REGEXP_IGNORE_EXTERNAL_DEPENDENCIES="^src/(crypto/ctaes/|leveldb/|secp256k1/|tinyformat.h|univalue/)"
+REGEXP_IGNORE_EXTERNAL_DEPENDENCIES="^src/(crypto/ctaes/|leveldb/|secp256k1/|minisketch/|tinyformat.h|univalue/)"
 
 LOCALE_DEPENDENT_FUNCTIONS=(
     alphasort    # LC_COLLATE (via strcoll)
diff --git a/test/lint/lint-shell-locale.sh b/test/lint/lint-shell-locale.sh
index 084dc93f76b..bd6b6ce05c4 100755
--- a/test/lint/lint-shell-locale.sh
+++ b/test/lint/lint-shell-locale.sh
@@ -12,7 +12,7 @@
 export LC_ALL=C
 
 EXIT_CODE=0
-for SHELL_SCRIPT in $(git ls-files -- "*.sh" | grep -vE "src/(secp256k1|univalue)/"); do
+for SHELL_SCRIPT in $(git ls-files -- "*.sh" | grep -vE "src/(secp256k1|minisketch|univalue)/"); do
     if grep -q "# This script is intentionally locale dependent by not setting \"export LC_ALL=C\"" "${SHELL_SCRIPT}"; then
         continue
     fi
diff --git a/test/lint/lint-shell.sh b/test/lint/lint-shell.sh
index 73ac583d843..0e18c730130 100755
--- a/test/lint/lint-shell.sh
+++ b/test/lint/lint-shell.sh
@@ -25,7 +25,7 @@ fi
 SHELLCHECK_CMD=(shellcheck --external-sources --check-sourced)
 EXCLUDE="--exclude=$(IFS=','; echo "${disabled[*]}")"
 SOURCED_FILES=$(git ls-files | xargs gawk '/^# shellcheck shell=/ {print FILENAME} {nextfile}')  # Check shellcheck directive used for sourced files
-if ! "${SHELLCHECK_CMD[@]}" "$EXCLUDE" $SOURCED_FILES $(git ls-files -- '*.sh' | grep -vE 'src/(leveldb|secp256k1|univalue)/'); then
+if ! "${SHELLCHECK_CMD[@]}" "$EXCLUDE" $SOURCED_FILES $(git ls-files -- '*.sh' | grep -vE 'src/(leveldb|secp256k1|minisketch|univalue)/'); then
     EXIT_CODE=1
 fi
 
diff --git a/test/lint/lint-spelling.sh b/test/lint/lint-spelling.sh
index 111091b7f8a..8eefa8f2ce9 100755
--- a/test/lint/lint-spelling.sh
+++ b/test/lint/lint-spelling.sh
@@ -15,6 +15,6 @@ if ! command -v codespell > /dev/null; then
 fi
 
 IGNORE_WORDS_FILE=test/lint/lint-spelling.ignore-words.txt
-if ! codespell --check-filenames --disable-colors --quiet-level=7 --ignore-words=${IGNORE_WORDS_FILE} $(git ls-files -- ":(exclude)build-aux/m4/" ":(exclude)contrib/seeds/*.txt" ":(exclude)depends/" ":(exclude)doc/release-notes/" ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/qt/locale/" ":(exclude)src/qt/*.qrc" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)contrib/builder-keys/keys.txt" ":(exclude)contrib/guix/patches"); then
+if ! codespell --check-filenames --disable-colors --quiet-level=7 --ignore-words=${IGNORE_WORDS_FILE} $(git ls-files -- ":(exclude)build-aux/m4/" ":(exclude)contrib/seeds/*.txt" ":(exclude)depends/" ":(exclude)doc/release-notes/" ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/qt/locale/" ":(exclude)src/qt/*.qrc" ":(exclude)src/secp256k1/" ":(exclude)src/minisketch/" ":(exclude)src/univalue/" ":(exclude)contrib/builder-keys/keys.txt" ":(exclude)contrib/guix/patches"); then
     echo "^ Warning: codespell identified likely spelling errors. Any false positives? Add them to the list of ignored words in ${IGNORE_WORDS_FILE}"
 fi
diff --git a/test/lint/lint-whitespace.sh b/test/lint/lint-whitespace.sh
index 37fcf7804a3..7967a212e7d 100755
--- a/test/lint/lint-whitespace.sh
+++ b/test/lint/lint-whitespace.sh
@@ -33,14 +33,14 @@ if [ -z "${COMMIT_RANGE}" ]; then
 fi
 
 showdiff() {
-  if ! git diff -U0 "${COMMIT_RANGE}" -- "." ":(exclude)depends/patches/" ":(exclude)contrib/guix/patches/" ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/" ":(exclude)src/qt/locale/"; then
+  if ! git diff -U0 "${COMMIT_RANGE}" -- "." ":(exclude)depends/patches/" ":(exclude)contrib/guix/patches/" ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/secp256k1/" ":(exclude)src/minisketch/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/" ":(exclude)src/qt/locale/"; then
     echo "Failed to get a diff"
     exit 1
   fi
 }
 
 showcodediff() {
-  if ! git diff -U0 "${COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/" ":(exclude)src/qt/locale/"; then
+  if ! git diff -U0 "${COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/crc32c/" ":(exclude)src/secp256k1/" ":(exclude)src/minisketch/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/" ":(exclude)src/qt/locale/"; then
     echo "Failed to get a diff"
     exit 1
   fi