diff --git a/cmake/utils/filter-lcov.py b/cmake/utils/filter-lcov.py
--- a/cmake/utils/filter-lcov.py
+++ b/cmake/utils/filter-lcov.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2020 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 import argparse
 
diff --git a/contrib/devtools/circular-dependencies.py b/contrib/devtools/circular-dependencies.py
--- a/contrib/devtools/circular-dependencies.py
+++ b/contrib/devtools/circular-dependencies.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2018-2020 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 import re
 import sys
diff --git a/contrib/gitian-build.py b/contrib/gitian-build.py
--- a/contrib/gitian-build.py
+++ b/contrib/gitian-build.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2019-2020 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 import argparse
 import multiprocessing
diff --git a/doc/man/gen-manpages.sh b/doc/man/gen-manpages.sh
--- a/doc/man/gen-manpages.sh
+++ b/doc/man/gen-manpages.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2020 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 export LC_ALL=C
 
diff --git a/src/crypto/sha256_avx2.cpp b/src/crypto/sha256_avx2.cpp
--- a/src/crypto/sha256_avx2.cpp
+++ b/src/crypto/sha256_avx2.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2019 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifdef ENABLE_AVX2
 
 #include <cstdint>
diff --git a/src/crypto/sha256_sse41.cpp b/src/crypto/sha256_sse41.cpp
--- a/src/crypto/sha256_sse41.cpp
+++ b/src/crypto/sha256_sse41.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2019 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifdef ENABLE_SSE41
 
 #include <cstdint>
diff --git a/src/qt/test/addressbooktests.h b/src/qt/test/addressbooktests.h
--- a/src/qt/test/addressbooktests.h
+++ b/src/qt/test/addressbooktests.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2020 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_QT_TEST_ADDRESSBOOKTESTS_H
 #define BITCOIN_QT_TEST_ADDRESSBOOKTESTS_H
 
diff --git a/src/qt/test/addressbooktests.cpp b/src/qt/test/addressbooktests.cpp
--- a/src/qt/test/addressbooktests.cpp
+++ b/src/qt/test/addressbooktests.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2021 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/test/addressbooktests.h>
 #include <test/util/setup_common.h>
 
diff --git a/src/qt/test/util.h b/src/qt/test/util.h
--- a/src/qt/test/util.h
+++ b/src/qt/test/util.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2019 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_QT_TEST_UTIL_H
 #define BITCOIN_QT_TEST_UTIL_H
 
diff --git a/src/qt/test/util.cpp b/src/qt/test/util.cpp
--- a/src/qt/test/util.cpp
+++ b/src/qt/test/util.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2018-2019 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/test/util.h>
 
 #include <QApplication>
diff --git a/src/qt/test/wallettests.h b/src/qt/test/wallettests.h
--- a/src/qt/test/wallettests.h
+++ b/src/qt/test/wallettests.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2020 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_QT_TEST_WALLETTESTS_H
 #define BITCOIN_QT_TEST_WALLETTESTS_H
 
diff --git a/src/qt/test/wallettests.cpp b/src/qt/test/wallettests.cpp
--- a/src/qt/test/wallettests.cpp
+++ b/src/qt/test/wallettests.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2015-2021 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/test/util.h>
 #include <qt/test/wallettests.h>
 
diff --git a/src/test/blockchain_tests.cpp b/src/test/blockchain_tests.cpp
--- a/src/test/blockchain_tests.cpp
+++ b/src/test/blockchain_tests.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2019-2021 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <rpc/blockchain.h>
 
 #include <chain.h>
diff --git a/test/functional/combine_logs.py b/test/functional/combine_logs.py
--- a/test/functional/combine_logs.py
+++ b/test/functional/combine_logs.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2017-2020 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Combine logs from multiple bitcoin nodes as well as the test_framework log.
 
 This streams the combined log output to stdout. Use combine_logs.py > outputfile