diff --git a/.github/workflows/handle_potential_conflicts.py b/.github/workflows/handle_potential_conflicts.py
index cf744de059d8..bd4232752f7e 100644
--- a/.github/workflows/handle_potential_conflicts.py
+++ b/.github/workflows/handle_potential_conflicts.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2022 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 import sys
 import requests
 
diff --git a/ci/dash/build-docker.sh b/ci/dash/build-docker.sh
index 5aea849fc688..fd541928e85d 100755
--- a/ci/dash/build-docker.sh
+++ b/ci/dash/build-docker.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021-2022 The Dash Core 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/ci/dash/build_depends.sh b/ci/dash/build_depends.sh
index 40639bcd12ad..cefd55047c74 100755
--- a/ci/dash/build_depends.sh
+++ b/ci/dash/build_depends.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 # This script is executed inside the builder image
 
diff --git a/ci/dash/build_src.sh b/ci/dash/build_src.sh
index 013fc4a10b1b..d2af35179fb3 100755
--- a/ci/dash/build_src.sh
+++ b/ci/dash/build_src.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021-2022 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 # This script is executed inside the builder image
 
diff --git a/ci/dash/matrix.sh b/ci/dash/matrix.sh
index c498cd4b810d..21028410a408 100755
--- a/ci/dash/matrix.sh
+++ b/ci/dash/matrix.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2019-2022 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 # This script is meant to be sourced into the actual build script. It contains the build matrix and will set all
 # necessary environment variables for the request build target
diff --git a/ci/dash/push-docker.sh b/ci/dash/push-docker.sh
index 3b3d0a5c47b2..93fa73450633 100755
--- a/ci/dash/push-docker.sh
+++ b/ci/dash/push-docker.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021 The Dash Core 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/ci/dash/test_integrationtests.sh b/ci/dash/test_integrationtests.sh
index 2fc86c44171a..fb45f14bd979 100755
--- a/ci/dash/test_integrationtests.sh
+++ b/ci/dash/test_integrationtests.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2018-2022 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 # This script is executed inside the builder image
 
diff --git a/ci/dash/test_unittests.sh b/ci/dash/test_unittests.sh
index 0a8d180897e0..e7abe0a80417 100755
--- a/ci/dash/test_unittests.sh
+++ b/ci/dash/test_unittests.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021-2022 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 # This script is executed inside the builder image
 
diff --git a/configure.ac b/configure.ac
index 67c69c7fa91f..d9b08a4cfdc3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ define(_CLIENT_VERSION_MINOR, 0)
 define(_CLIENT_VERSION_BUILD, 0)
 define(_CLIENT_VERSION_RC, 0)
 define(_CLIENT_VERSION_IS_RELEASE, false)
-define(_COPYRIGHT_YEAR, 2022)
+define(_COPYRIGHT_YEAR, 2023)
 define(_COPYRIGHT_HOLDERS,[The %s developers])
 define(_COPYRIGHT_HOLDERS_SUBSTITUTION,[[Dash Core]])
 AC_INIT([Dash Core],m4_join([.], _CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MINOR, _CLIENT_VERSION_BUILD)m4_if(_CLIENT_VERSION_RC, [0], [], [rc]_CLIENT_VERSION_RC),[https://github.com/dashpay/dash/issues],[dashcore],[https://dash.org/])
diff --git a/contrib/auto_gdb/common_helpers.py b/contrib/auto_gdb/common_helpers.py
index d85ffb0b0493..fafecd63b751 100644
--- a/contrib/auto_gdb/common_helpers.py
+++ b/contrib/auto_gdb/common_helpers.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2018-2020 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 
 import sys
diff --git a/contrib/auto_gdb/dash_dbg.sh b/contrib/auto_gdb/dash_dbg.sh
index dd9588c906bd..0486c1889405 100755
--- a/contrib/auto_gdb/dash_dbg.sh
+++ b/contrib/auto_gdb/dash_dbg.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2018-2020 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 # use testnet settings,  if you need mainnet,  use ~/.dashcore/dashd.pid file instead
 export LC_ALL=C
 
diff --git a/contrib/auto_gdb/log_size.py b/contrib/auto_gdb/log_size.py
index 4bb84e2eb24f..149b6a29357c 100644
--- a/contrib/auto_gdb/log_size.py
+++ b/contrib/auto_gdb/log_size.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2018-2021 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 
 try:
diff --git a/contrib/auto_gdb/simple_class_obj.py b/contrib/auto_gdb/simple_class_obj.py
index b3c9d852e69e..d624a23df6bd 100644
--- a/contrib/auto_gdb/simple_class_obj.py
+++ b/contrib/auto_gdb/simple_class_obj.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2018-2021 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 
 import sys
diff --git a/contrib/auto_gdb/stl_containers.py b/contrib/auto_gdb/stl_containers.py
index a4fdb4afe9a1..9e50becbe639 100644
--- a/contrib/auto_gdb/stl_containers.py
+++ b/contrib/auto_gdb/stl_containers.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2018-2020 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 
 try:
diff --git a/contrib/auto_gdb/used_size.py b/contrib/auto_gdb/used_size.py
index 9ca88507bb35..14cfac289a5e 100644
--- a/contrib/auto_gdb/used_size.py
+++ b/contrib/auto_gdb/used_size.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python3
+# Copyright (c) 2018-2021 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 
 try:
diff --git a/contrib/containers/deploy/docker-entrypoint.sh b/contrib/containers/deploy/docker-entrypoint.sh
index 493d8d4e44bf..313c2d44f17f 100755
--- a/contrib/containers/deploy/docker-entrypoint.sh
+++ b/contrib/containers/deploy/docker-entrypoint.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021 The Dash Core 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
 set -e
diff --git a/contrib/devtools/copyright_header.py b/contrib/devtools/copyright_header.py
index 66727aaebcf3..2c112feabea0 100755
--- a/contrib/devtools/copyright_header.py
+++ b/contrib/devtools/copyright_header.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 # Copyright (c) 2016-2019 The Bitcoin Core developers
-# Copyright (c) 2019-2021 The Dash Core developers
+# Copyright (c) 2019-2023 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -17,10 +17,16 @@
 
 EXCLUDE = [
     # auto generated:
-    'src/qt/bitcoinstrings.cpp',
+    'src/qt/dashstrings.cpp',
     'src/chainparamsseeds.h',
     # other external copyrights:
+    'src/bip39.cpp',
+    'src/bip39.h',
+    'src/bip39_english.h',
+    'src/crypto/*',
+    'src/ctpl_stl.h',
     'src/reverse_iterator.h',
+    'src/statsd_client.cpp',
     'src/test/fuzz/FuzzedDataProvider.h',
     'src/tinyformat.h',
     'src/bench/nanobench.h',
diff --git a/src/batchedlogger.cpp b/src/batchedlogger.cpp
index 562eca0cd60a..0199ae4227ee 100644
--- a/src/batchedlogger.cpp
+++ b/src/batchedlogger.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/batchedlogger.h b/src/batchedlogger.h
index e86b9dbad64c..09e72d36251a 100644
--- a/src/batchedlogger.h
+++ b/src/batchedlogger.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/bench/ecdsa.cpp b/src/bench/ecdsa.cpp
index a26e932ad492..7a835a268f68 100644
--- a/src/bench/ecdsa.cpp
+++ b/src/bench/ecdsa.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/bench/string_cast.cpp b/src/bench/string_cast.cpp
index ff592b7af42c..6cbd0a1d34fe 100644
--- a/src/bench/string_cast.cpp
+++ b/src/bench/string_cast.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/bls/bls_batchverifier.h b/src/bls/bls_batchverifier.h
index 4e5f162f13d6..c897d1567c8c 100644
--- a/src/bls/bls_batchverifier.h
+++ b/src/bls/bls_batchverifier.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/bls/bls_ies.cpp b/src/bls/bls_ies.cpp
index 2928ed5ffc3b..b57dfdb2edd6 100644
--- a/src/bls/bls_ies.cpp
+++ b/src/bls/bls_ies.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/cachemap.h b/src/cachemap.h
index 5d7d0a5f524f..011e28824c42 100644
--- a/src/cachemap.h
+++ b/src/cachemap.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/cachemultimap.h b/src/cachemultimap.h
index d036be08a2e7..ab61b5806c24 100644
--- a/src/cachemultimap.h
+++ b/src/cachemultimap.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index c3e5fc24d2c6..6853b3797e8f 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2014 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/coinjoin/client.cpp b/src/coinjoin/client.cpp
index 9ea0c36e3045..bed147b9499f 100644
--- a/src/coinjoin/client.cpp
+++ b/src/coinjoin/client.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/coinjoin/client.h b/src/coinjoin/client.h
index c764be63da8c..a5816843442a 100644
--- a/src/coinjoin/client.h
+++ b/src/coinjoin/client.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/coinjoin/coinjoin.cpp b/src/coinjoin/coinjoin.cpp
index 35edcbffe838..cbae86edd348 100644
--- a/src/coinjoin/coinjoin.cpp
+++ b/src/coinjoin/coinjoin.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/coinjoin/coinjoin.h b/src/coinjoin/coinjoin.h
index d9e0ab123dff..e74a8537435c 100644
--- a/src/coinjoin/coinjoin.h
+++ b/src/coinjoin/coinjoin.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/coinjoin/server.cpp b/src/coinjoin/server.cpp
index 649e1c4b4ead..b48aedeb12fa 100644
--- a/src/coinjoin/server.cpp
+++ b/src/coinjoin/server.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/coinjoin/server.h b/src/coinjoin/server.h
index 5ff06c1cefc9..c011a1122654 100644
--- a/src/coinjoin/server.h
+++ b/src/coinjoin/server.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/dsnotificationinterface.cpp b/src/dsnotificationinterface.cpp
index 0b4562bd012f..627bf4d5a381 100644
--- a/src/dsnotificationinterface.cpp
+++ b/src/dsnotificationinterface.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/evo/deterministicmns.cpp b/src/evo/deterministicmns.cpp
index 353015fbbfc4..e23fad45f972 100644
--- a/src/evo/deterministicmns.cpp
+++ b/src/evo/deterministicmns.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/evo/dmnstate.h b/src/evo/dmnstate.h
index 29c1f18f6534..c2853ae54478 100644
--- a/src/evo/dmnstate.h
+++ b/src/evo/dmnstate.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/evo/evodb.cpp b/src/evo/evodb.cpp
index bed829f9f802..fcb63371f556 100644
--- a/src/evo/evodb.cpp
+++ b/src/evo/evodb.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/evo/evodb.h b/src/evo/evodb.h
index d9720afa7fe2..5758fe36d976 100644
--- a/src/evo/evodb.h
+++ b/src/evo/evodb.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2021 The Dash Core developers
+// Copyright (c) 2018-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/evo/mnauth.cpp b/src/evo/mnauth.cpp
index 8750b9c8a0e4..56056dc0a9fb 100644
--- a/src/evo/mnauth.cpp
+++ b/src/evo/mnauth.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2022 The Dash Core developers
+// Copyright (c) 2019-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/flat-database.h b/src/flat-database.h
index 424c21b517b5..3235569c0cf9 100644
--- a/src/flat-database.h
+++ b/src/flat-database.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/governance/classes.cpp b/src/governance/classes.cpp
index 3be148bffad8..e3ceb77be536 100644
--- a/src/governance/classes.cpp
+++ b/src/governance/classes.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/governance/classes.h b/src/governance/classes.h
index 8d2b96c3c622..2ae710c34acd 100644
--- a/src/governance/classes.h
+++ b/src/governance/classes.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #ifndef BITCOIN_GOVERNANCE_CLASSES_H
diff --git a/src/governance/governance.cpp b/src/governance/governance.cpp
index 999485156c6a..6792d390c7dd 100644
--- a/src/governance/governance.cpp
+++ b/src/governance/governance.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/governance/object.cpp b/src/governance/object.cpp
index 66a6ef278b32..dddd8d8dbd74 100644
--- a/src/governance/object.cpp
+++ b/src/governance/object.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/governance/vote.cpp b/src/governance/vote.cpp
index 75345b19180b..516acbedabf6 100644
--- a/src/governance/vote.cpp
+++ b/src/governance/vote.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/governance/vote.h b/src/governance/vote.h
index 9fab997fcec4..0675b59c25ac 100644
--- a/src/governance/vote.h
+++ b/src/governance/vote.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/hdchain.h b/src/hdchain.h
index e1a146e03b30..35e055a95e56 100644
--- a/src/hdchain.h
+++ b/src/hdchain.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 #ifndef BITCOIN_HDCHAIN_H
 #define BITCOIN_HDCHAIN_H
diff --git a/src/init.cpp b/src/init.cpp
index 8a64cd9450a5..2d498dbb3c6c 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2018 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/blockprocessor.cpp b/src/llmq/blockprocessor.cpp
index 08edcd0634e2..53dc969de8ca 100644
--- a/src/llmq/blockprocessor.cpp
+++ b/src/llmq/blockprocessor.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/chainlocks.cpp b/src/llmq/chainlocks.cpp
index 45eeb988b8c0..145f5094ef1f 100644
--- a/src/llmq/chainlocks.cpp
+++ b/src/llmq/chainlocks.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2022 The Dash Core developers
+// Copyright (c) 2019-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/chainlocks.h b/src/llmq/chainlocks.h
index 0fd4669bc1a6..98c3918c2f4e 100644
--- a/src/llmq/chainlocks.h
+++ b/src/llmq/chainlocks.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2022 The Dash Core developers
+// Copyright (c) 2019-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/context.cpp b/src/llmq/context.cpp
index c83f2d79d9d7..27f92e43fae5 100644
--- a/src/llmq/context.cpp
+++ b/src/llmq/context.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/instantsend.cpp b/src/llmq/instantsend.cpp
index de14e329dad8..9cd86f2b9a43 100644
--- a/src/llmq/instantsend.cpp
+++ b/src/llmq/instantsend.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2022 The Dash Core developers
+// Copyright (c) 2019-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/instantsend.h b/src/llmq/instantsend.h
index c7afb943dae1..c9a01c9bcc93 100644
--- a/src/llmq/instantsend.h
+++ b/src/llmq/instantsend.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2022 The Dash Core developers
+// Copyright (c) 2019-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/quorums.cpp b/src/llmq/quorums.cpp
index f874094f252c..64f89d457850 100644
--- a/src/llmq/quorums.cpp
+++ b/src/llmq/quorums.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/quorums.h b/src/llmq/quorums.h
index db77e85a883e..98e16e037bac 100644
--- a/src/llmq/quorums.h
+++ b/src/llmq/quorums.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/llmq/utils.cpp b/src/llmq/utils.cpp
index 805c621ad75c..814f3aa840c9 100644
--- a/src/llmq/utils.cpp
+++ b/src/llmq/utils.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The Dash Core developers
+// Copyright (c) 2018-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/masternode/meta.h b/src/masternode/meta.h
index 662456fced87..e0f15c0c8ae8 100644
--- a/src/masternode/meta.h
+++ b/src/masternode/meta.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/masternode/payments.cpp b/src/masternode/payments.cpp
index e576bd04837d..e3ab3cc058ac 100644
--- a/src/masternode/payments.cpp
+++ b/src/masternode/payments.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/masternode/payments.h b/src/masternode/payments.h
index 86a5ad5f6dad..2026863ab797 100644
--- a/src/masternode/payments.h
+++ b/src/masternode/payments.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/masternode/utils.cpp b/src/masternode/utils.cpp
index 16d5cfac092b..9454793cd03a 100644
--- a/src/masternode/utils.cpp
+++ b/src/masternode/utils.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/masternode/utils.h b/src/masternode/utils.h
index ad276f62e3d0..3437175d627c 100644
--- a/src/masternode/utils.h
+++ b/src/masternode/utils.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/messagesigner.cpp b/src/messagesigner.cpp
index cf0740ec1228..1cb8a99a276f 100644
--- a/src/messagesigner.cpp
+++ b/src/messagesigner.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/messagesigner.h b/src/messagesigner.h
index 4f54fe39cfb6..6b063936c385 100644
--- a/src/messagesigner.h
+++ b/src/messagesigner.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/net.cpp b/src/net.cpp
index d013cc48868d..e3d3cbde76c4 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2019 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/netfulfilledman.cpp b/src/netfulfilledman.cpp
index 8a2462010ec8..03fe91ea874b 100644
--- a/src/netfulfilledman.cpp
+++ b/src/netfulfilledman.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/netfulfilledman.h b/src/netfulfilledman.h
index f97fa339b2ad..9cd7c40254b4 100644
--- a/src/netfulfilledman.h
+++ b/src/netfulfilledman.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/appearancewidget.cpp b/src/qt/appearancewidget.cpp
index e265b0ead68d..ba1872e28751 100644
--- a/src/qt/appearancewidget.cpp
+++ b/src/qt/appearancewidget.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2020-2021 The Dash Core developers
+// Copyright (c) 2020-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/appearancewidget.h b/src/qt/appearancewidget.h
index 0de5b18da73e..85bfaccc6510 100644
--- a/src/qt/appearancewidget.h
+++ b/src/qt/appearancewidget.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2020-2021 The Dash Core developers
+// Copyright (c) 2020-2022 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/askpassphrasedialog.cpp b/src/qt/askpassphrasedialog.cpp
index c6b91a092be2..98132f565035 100644
--- a/src/qt/askpassphrasedialog.cpp
+++ b/src/qt/askpassphrasedialog.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2011-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/bitcoinaddressvalidator.cpp b/src/qt/bitcoinaddressvalidator.cpp
index 168f9b481f1d..e09c61ae35fe 100644
--- a/src/qt/bitcoinaddressvalidator.cpp
+++ b/src/qt/bitcoinaddressvalidator.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2011-2014 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/bitcoinunits.h b/src/qt/bitcoinunits.h
index 3b7f04dd4384..3c2fccf1ab8d 100644
--- a/src/qt/bitcoinunits.h
+++ b/src/qt/bitcoinunits.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2011-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/editaddressdialog.cpp b/src/qt/editaddressdialog.cpp
index 2a136f7958ce..b6ab26870777 100644
--- a/src/qt/editaddressdialog.cpp
+++ b/src/qt/editaddressdialog.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2011-2014 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/governancelist.cpp b/src/qt/governancelist.cpp
index 08d89e3e5cf4..0ced87e011fa 100644
--- a/src/qt/governancelist.cpp
+++ b/src/qt/governancelist.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2021-2022 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/forms/ui_governancelist.h>
 #include <qt/governancelist.h>
 
diff --git a/src/qt/governancelist.h b/src/qt/governancelist.h
index 568cac6685e6..65834e54e584 100644
--- a/src/qt/governancelist.h
+++ b/src/qt/governancelist.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2021-2022 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_QT_GOVERNANCELIST_H
 #define BITCOIN_QT_GOVERNANCELIST_H
 
diff --git a/src/qt/guiconstants.h b/src/qt/guiconstants.h
index 8d7486e9e91d..4e5b8db3bb57 100644
--- a/src/qt/guiconstants.h
+++ b/src/qt/guiconstants.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2011-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/masternodelist.cpp b/src/qt/masternodelist.cpp
index 79a32638e604..ef03bebca1dc 100644
--- a/src/qt/masternodelist.cpp
+++ b/src/qt/masternodelist.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2016-2022 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/masternodelist.h>
 #include <qt/forms/ui_masternodelist.h>
 
diff --git a/src/qt/masternodelist.h b/src/qt/masternodelist.h
index acfd1007423d..c6238935372c 100644
--- a/src/qt/masternodelist.h
+++ b/src/qt/masternodelist.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2016-2021 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_QT_MASTERNODELIST_H
 #define BITCOIN_QT_MASTERNODELIST_H
 
diff --git a/src/qt/networkstyle.cpp b/src/qt/networkstyle.cpp
index 9b28277122d2..47f8f3e7eb74 100644
--- a/src/qt/networkstyle.cpp
+++ b/src/qt/networkstyle.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2014 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/networkstyle.h b/src/qt/networkstyle.h
index e7278a2d3dd2..96f76a420d13 100644
--- a/src/qt/networkstyle.h
+++ b/src/qt/networkstyle.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2014 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/qt/test/trafficgraphdatatests.cpp b/src/qt/test/trafficgraphdatatests.cpp
index ef25a739b4fa..a6ca93fa445b 100644
--- a/src/qt/test/trafficgraphdatatests.cpp
+++ b/src/qt/test/trafficgraphdatatests.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2020 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/test/trafficgraphdatatests.h>
 #include <qt/trafficgraphdata.h>
 #include <algorithm>
diff --git a/src/qt/test/trafficgraphdatatests.h b/src/qt/test/trafficgraphdatatests.h
index c7032f01984d..0df234998328 100644
--- a/src/qt/test/trafficgraphdatatests.h
+++ b/src/qt/test/trafficgraphdatatests.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2018 The Dash Core 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_TRAFFICGRAPHDATATESTS_H
 #define BITCOIN_QT_TEST_TRAFFICGRAPHDATATESTS_H
 
diff --git a/src/qt/trafficgraphdata.cpp b/src/qt/trafficgraphdata.cpp
index 277a08ace645..5474b2fc9f49 100644
--- a/src/qt/trafficgraphdata.cpp
+++ b/src/qt/trafficgraphdata.cpp
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2020 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #include <qt/trafficgraphdata.h>
 
 const int TrafficGraphData::RangeMinutes[] = {5,10,15,30,60,120,180,360,720,1440};
diff --git a/src/qt/trafficgraphdata.h b/src/qt/trafficgraphdata.h
index 096baeae0422..5a3a0764d902 100644
--- a/src/qt/trafficgraphdata.h
+++ b/src/qt/trafficgraphdata.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2017-2020 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_QT_TRAFFICGRAPHDATA_H
 #define BITCOIN_QT_TRAFFICGRAPHDATA_H
 
diff --git a/src/rpc/governance.cpp b/src/rpc/governance.cpp
index 5dd144995273..41745741ec23 100644
--- a/src/rpc/governance.cpp
+++ b/src/rpc/governance.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/rpc/masternode.cpp b/src/rpc/masternode.cpp
index a737c629bbd6..eff93f14ccd7 100644
--- a/src/rpc/masternode.cpp
+++ b/src/rpc/masternode.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 5843817b296d..d7614ff9ea28 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2018 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/rpc/misc.cpp b/src/rpc/misc.cpp
index 231b5e7ce72f..9d1e88dedab3 100644
--- a/src/rpc/misc.cpp
+++ b/src/rpc/misc.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/saltedhasher.cpp b/src/saltedhasher.cpp
index 856c84eb620d..93ec9a6d695e 100644
--- a/src/saltedhasher.cpp
+++ b/src/saltedhasher.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2021 The Dash Core developers
+// Copyright (c) 2019-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/saltedhasher.h b/src/saltedhasher.h
index aeeb16195ed8..917642a0528f 100644
--- a/src/saltedhasher.h
+++ b/src/saltedhasher.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2019-2021 The Dash Core developers
+// Copyright (c) 2019-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/statsd_client.h b/src/statsd_client.h
index b222918eb3e4..ed331ccd5836 100644
--- a/src/statsd_client.h
+++ b/src/statsd_client.h
@@ -1,3 +1,7 @@
+// Copyright (c) 2020-2022 The Dash Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 #ifndef BITCOIN_STATSD_CLIENT_H
 #define BITCOIN_STATSD_CLIENT_H
 
diff --git a/src/support/allocators/mt_pooled_secure.h b/src/support/allocators/mt_pooled_secure.h
index 9f2a61cf6728..c479cb0edfd2 100644
--- a/src/support/allocators/mt_pooled_secure.h
+++ b/src/support/allocators/mt_pooled_secure.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/support/allocators/pooled_secure.h b/src/support/allocators/pooled_secure.h
index 00dba8ecb1da..289cd9c187fe 100644
--- a/src/support/allocators/pooled_secure.h
+++ b/src/support/allocators/pooled_secure.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/test/specialtx_tests.cpp b/src/test/specialtx_tests.cpp
index 401eb16f0eee..fc325122f61b 100644
--- a/src/test/specialtx_tests.cpp
+++ b/src/test/specialtx_tests.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2021-2022 The Dash Core developers
+// Copyright (c) 2021-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/uint256.h b/src/uint256.h
index f8c99afbd674..b6aee3cf1413 100644
--- a/src/uint256.h
+++ b/src/uint256.h
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2021 The Dash Core developers
+// Copyright (c) 2014-2022 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/validation.cpp b/src/validation.cpp
index 81a0e8e615a7..ac3f9c228bc0 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2018 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/version.h b/src/version.h
index 41c91f529d9b..1ded6e1ba363 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2012-2014 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index d9ce5e9ce1fa..24dcc9947bf8 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 78d1a382b975..9b01245711e2 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2019 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 616b19ea5af2..90b26ba8015d 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2019 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index cec677e1acad..8b7354f8d19e 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2015 The Bitcoin Core developers
-// Copyright (c) 2014-2022 The Dash Core developers
+// Copyright (c) 2014-2023 The Dash Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_llmq_chainlocks.py b/test/functional/feature_llmq_chainlocks.py
index 9efc39162183..87ea496af283 100755
--- a/test/functional/feature_llmq_chainlocks.py
+++ b/test/functional/feature_llmq_chainlocks.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2015-2021 The Dash Core developers
+# Copyright (c) 2015-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_llmq_connections.py b/test/functional/feature_llmq_connections.py
index cb6ffcda8eb0..37e1979a6392 100755
--- a/test/functional/feature_llmq_connections.py
+++ b/test/functional/feature_llmq_connections.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2015-2021 The Dash Core developers
+# Copyright (c) 2015-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_llmq_data_recovery.py b/test/functional/feature_llmq_data_recovery.py
index c69ad8ae6a86..db2331654724 100755
--- a/test/functional/feature_llmq_data_recovery.py
+++ b/test/functional/feature_llmq_data_recovery.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2021 The Dash Core developers
+# Copyright (c) 2021-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_llmq_dkgerrors.py b/test/functional/feature_llmq_dkgerrors.py
index 74ae53ea73cf..72a0a17fb1c4 100755
--- a/test/functional/feature_llmq_dkgerrors.py
+++ b/test/functional/feature_llmq_dkgerrors.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2015-2021 The Dash Core developers
+# Copyright (c) 2015-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_llmq_is_retroactive.py b/test/functional/feature_llmq_is_retroactive.py
index e38bb6c2cc5f..9f82b1883d96 100755
--- a/test/functional/feature_llmq_is_retroactive.py
+++ b/test/functional/feature_llmq_is_retroactive.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2015-2021 The Dash Core developers
+# Copyright (c) 2015-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_llmq_simplepose.py b/test/functional/feature_llmq_simplepose.py
index 650b13f0ef6a..bc254c552a50 100755
--- a/test/functional/feature_llmq_simplepose.py
+++ b/test/functional/feature_llmq_simplepose.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2015-2021 The Dash Core developers
+# Copyright (c) 2015-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/feature_multikeysporks.py b/test/functional/feature_multikeysporks.py
index cda780e16e79..01b7ac1ba5eb 100755
--- a/test/functional/feature_multikeysporks.py
+++ b/test/functional/feature_multikeysporks.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2018-2021 The Dash Core developers
+# Copyright (c) 2018-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 import time
diff --git a/test/functional/feature_sporks.py b/test/functional/feature_sporks.py
index d41237f37e3d..60597ce5ea12 100755
--- a/test/functional/feature_sporks.py
+++ b/test/functional/feature_sporks.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2018-2021 The Dash Core developers
+# Copyright (c) 2018-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/p2p_connect_to_devnet.py b/test/functional/p2p_connect_to_devnet.py
index 0586e057524e..ebe53ed22e5d 100755
--- a/test/functional/p2p_connect_to_devnet.py
+++ b/test/functional/p2p_connect_to_devnet.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2021 The Dash Core developers
+# Copyright (c) 2021-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test being able to connect to the same devnet"""
diff --git a/test/functional/rpc_masternode.py b/test/functional/rpc_masternode.py
index cdf74c24ce1c..7ec1c34d4719 100755
--- a/test/functional/rpc_masternode.py
+++ b/test/functional/rpc_masternode.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2020-2021 The Dash Core developers
+# Copyright (c) 2020-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 from test_framework.test_framework import DashTestFramework
diff --git a/test/functional/rpc_mnauth.py b/test/functional/rpc_mnauth.py
index d63d9de117c6..54c43b059279 100755
--- a/test/functional/rpc_mnauth.py
+++ b/test/functional/rpc_mnauth.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2021 The Dash Core developers
+# Copyright (c) 2021-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/rpc_platform_filter.py b/test/functional/rpc_platform_filter.py
index eba00b3782d5..82c45be46f87 100755
--- a/test/functional/rpc_platform_filter.py
+++ b/test/functional/rpc_platform_filter.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2020-2021 The Dash Core developers
+# Copyright (c) 2020-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test that commands submitted by the platform user are filtered."""
diff --git a/test/functional/rpc_verifychainlock.py b/test/functional/rpc_verifychainlock.py
index 85779a641ac7..fcb31321298a 100755
--- a/test/functional/rpc_verifychainlock.py
+++ b/test/functional/rpc_verifychainlock.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2021 The Dash Core developers
+# Copyright (c) 2021-2022 The Dash Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.