diff --git a/layouts/default/60_abnt2/default_60_abnt2/keymap.c b/layouts/default/60_abnt2/default_60_abnt2/keymap.c
index d2c1e212c7..a5a8f61cb6 100644
--- a/layouts/default/60_abnt2/default_60_abnt2/keymap.c
+++ b/layouts/default/60_abnt2/default_60_abnt2/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 #include "keymap_brazilian_abnt2.h"
@@ -39,7 +42,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      */
     [1] = LAYOUT_60_abnt2(
         BR_QUOT, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_DEL,
-        _______, _______, _______, _______, QK_BOOT,   _______, KC_INS,  KC_HOME, KC_UP,   KC_END,  KC_PGUP, _______, _______,
+        _______, _______, _______, _______, QK_BOOT, _______, KC_INS,  KC_HOME, KC_UP,   KC_END,  KC_PGUP, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, _______, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                            _______, _______, _______, _______
diff --git a/layouts/default/60_ansi/default_60_ansi/keymap.c b/layouts/default/60_ansi/default_60_ansi/keymap.c
index e3231a5bcc..965bbd4269 100644
--- a/layouts/default/60_ansi/default_60_ansi/keymap.c
+++ b/layouts/default/60_ansi/default_60_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_ansi_arrow/default_60_ansi_arrow/keymap.c b/layouts/default/60_ansi_arrow/default_60_ansi_arrow/keymap.c
index be081ed647..9540ce43f8 100644
--- a/layouts/default/60_ansi_arrow/default_60_ansi_arrow/keymap.c
+++ b/layouts/default/60_ansi_arrow/default_60_ansi_arrow/keymap.c
@@ -1,28 +1,8 @@
-/*
- * Default 60 ANSI Arrow Keymap.
- *
- * Copyright (C) 2020 Sendy YK <https://mr.sendyyk.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
+// Copyright 2020 QMK / Sendy YK
+// SPDX-License-Identifier: GPL-2.0-or-later/
 
 #include QMK_KEYBOARD_H
 
-enum layer_names {
-    _BASE
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┐
@@ -37,11 +17,11 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      * │Ctrl│GUI │Alt │Space                   │Alt│GUI│←  │↓  │→  │
      * └────┴────┴────┴────────────────────────┴───┴───┴───┴───┴───┘
      */
-    [_BASE] = LAYOUT_60_ansi_arrow(
+    [0] = LAYOUT_60_ansi_arrow(
         QK_GESC, KC_1,    KC_2, KC_3,    KC_4, KC_5, KC_6,   KC_7, KC_8, KC_9,    KC_0,    KC_MINS, KC_EQL,           KC_BSPC,
         KC_TAB,           KC_Q, KC_W,    KC_E, KC_R, KC_T,   KC_Y, KC_U, KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,
         KC_CAPS,          KC_A, KC_S,    KC_D, KC_F, KC_G,   KC_H, KC_J, KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
         KC_LSFT,          KC_Z, KC_X,    KC_C, KC_V, KC_B,   KC_N, KC_M, KC_COMM, KC_DOT,           KC_RSFT, KC_UP,   KC_SLSH,
         KC_LCTL, KC_LGUI,       KC_LALT,             KC_SPC,                      KC_RALT, KC_RGUI, KC_LEFT, KC_DOWN, KC_RGHT
-    ),
+    )
 };
diff --git a/layouts/default/60_ansi_arrow_split_bs_7u_spc/default_60_ansi_arrow_split_bs_7u_spc/keymap.c b/layouts/default/60_ansi_arrow_split_bs_7u_spc/default_60_ansi_arrow_split_bs_7u_spc/keymap.c
index 4e753c2f4c..409f415318 100644
--- a/layouts/default/60_ansi_arrow_split_bs_7u_spc/default_60_ansi_arrow_split_bs_7u_spc/keymap.c
+++ b/layouts/default/60_ansi_arrow_split_bs_7u_spc/default_60_ansi_arrow_split_bs_7u_spc/keymap.c
@@ -1,28 +1,8 @@
-/*
- * Default 60 ANSI Arrow Split Backspace & 7U Space Keymap.
- *
- * Copyright (C) 2020 Sendy YK <https://mr.sendyyk.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
+// Copyright 2020 QMK / Sendy YK
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
-enum layer_names {
-    _BASE
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
@@ -37,7 +17,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      * │Ctrl │GUI│Alt  │Space                      │Alt│←  │↓  │→  │
      * └─────┴───┴─────┴───────────────────────────┴───┴───┴───┴───┘
      */
-    [_BASE] = LAYOUT_60_ansi_arrow_split_bs_7u_spc(
+    [0] = LAYOUT_60_ansi_arrow_split_bs_7u_spc(
         QK_GESC, KC_1,    KC_2, KC_3,    KC_4, KC_5, KC_6,   KC_7, KC_8, KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_DEL,
         KC_TAB,           KC_Q, KC_W,    KC_E, KC_R, KC_T,   KC_Y, KC_U, KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSPC,
         KC_CAPS,          KC_A, KC_S,    KC_D, KC_F, KC_G,   KC_H, KC_J, KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
diff --git a/layouts/default/60_ansi_split_bs_rshift/default_60_ansi_split_bs_rshift/keymap.c b/layouts/default/60_ansi_split_bs_rshift/default_60_ansi_split_bs_rshift/keymap.c
index 2596bdf8ab..1d6d4abf48 100644
--- a/layouts/default/60_ansi_split_bs_rshift/default_60_ansi_split_bs_rshift/keymap.c
+++ b/layouts/default/60_ansi_split_bs_rshift/default_60_ansi_split_bs_rshift/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_ansi_tsangan/default_60_ansi_tsangan/keymap.c b/layouts/default/60_ansi_tsangan/default_60_ansi_tsangan/keymap.c
index dad37938f6..aa8c7e2a76 100644
--- a/layouts/default/60_ansi_tsangan/default_60_ansi_tsangan/keymap.c
+++ b/layouts/default/60_ansi_tsangan/default_60_ansi_tsangan/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_hhkb/default_60_hhkb/keymap.c b/layouts/default/60_hhkb/default_60_hhkb/keymap.c
index 81a0fc7d9f..17c107e2b4 100644
--- a/layouts/default/60_hhkb/default_60_hhkb/keymap.c
+++ b/layouts/default/60_hhkb/default_60_hhkb/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_iso/default_60_iso/keymap.c b/layouts/default/60_iso/default_60_iso/keymap.c
index e663d62cce..81d6599ee4 100644
--- a/layouts/default/60_iso/default_60_iso/keymap.c
+++ b/layouts/default/60_iso/default_60_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_iso_split_bs_rshift/default_60_iso_split_bs_rshift/keymap.c b/layouts/default/60_iso_split_bs_rshift/default_60_iso_split_bs_rshift/keymap.c
index 6e38dac3b5..a4d1d4602a 100644
--- a/layouts/default/60_iso_split_bs_rshift/default_60_iso_split_bs_rshift/keymap.c
+++ b/layouts/default/60_iso_split_bs_rshift/default_60_iso_split_bs_rshift/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_iso_tsangan/default_60_iso_tsangan/keymap.c b/layouts/default/60_iso_tsangan/default_60_iso_tsangan/keymap.c
index d15358a81e..a0d3b8acf0 100644
--- a/layouts/default/60_iso_tsangan/default_60_iso_tsangan/keymap.c
+++ b/layouts/default/60_iso_tsangan/default_60_iso_tsangan/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/60_tsangan_hhkb/default_60_tsangan_hhkb/keymap.c b/layouts/default/60_tsangan_hhkb/default_60_tsangan_hhkb/keymap.c
index 073601dec8..1327639590 100644
--- a/layouts/default/60_tsangan_hhkb/default_60_tsangan_hhkb/keymap.c
+++ b/layouts/default/60_tsangan_hhkb/default_60_tsangan_hhkb/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
@@ -20,5 +23,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,          KC_ENT,
         KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, KC_RSFT,
         KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                                      KC_RALT, KC_RGUI, KC_RCTL
-  )
+    )
 };
diff --git a/layouts/default/64_ansi/default_64_ansi/keymap.c b/layouts/default/64_ansi/default_64_ansi/keymap.c
index d386ccd719..fdbb44117f 100644
--- a/layouts/default/64_ansi/default_64_ansi/keymap.c
+++ b/layouts/default/64_ansi/default_64_ansi/keymap.c
@@ -1,18 +1,6 @@
-/* Copyright 2020 noroadsleft
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+// Copyright 2020 QMK / James Young (@noroadsleft)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/64_iso/default_64_iso/keymap.c b/layouts/default/64_iso/default_64_iso/keymap.c
index 9e8c202ec0..1dfcdd3eb7 100644
--- a/layouts/default/64_iso/default_64_iso/keymap.c
+++ b/layouts/default/64_iso/default_64_iso/keymap.c
@@ -1,18 +1,6 @@
-/* Copyright 2020 noroadsleft
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+// Copyright 2020 QMK / James Young (@noroadsleft)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/65_ansi/default_65_ansi/keymap.c b/layouts/default/65_ansi/default_65_ansi/keymap.c
index 6c9199c1e8..358c721831 100644
--- a/layouts/default/65_ansi/default_65_ansi/keymap.c
+++ b/layouts/default/65_ansi/default_65_ansi/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2018-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ Backsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______,
         _______,          _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______, _______, _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_ansi_blocker/default_65_ansi_blocker/keymap.c b/layouts/default/65_ansi_blocker/default_65_ansi_blocker/keymap.c
index b134a5e6c7..3283d142d0 100644
--- a/layouts/default/65_ansi_blocker/default_65_ansi_blocker/keymap.c
+++ b/layouts/default/65_ansi_blocker/default_65_ansi_blocker/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2019-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ Backsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______,
         _______,          _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_ansi_blocker_split_bs/default_65_ansi_blocker_split_bs/keymap.c b/layouts/default/65_ansi_blocker_split_bs/default_65_ansi_blocker_split_bs/keymap.c
index 099e714395..15c56af31b 100644
--- a/layouts/default/65_ansi_blocker_split_bs/default_65_ansi_blocker_split_bs/keymap.c
+++ b/layouts/default/65_ansi_blocker_split_bs/default_65_ansi_blocker_split_bs/keymap.c
@@ -1,4 +1,4 @@
-// Copyright 2020-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
@@ -45,6 +45,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______,
         _______,          _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_ansi_blocker_tsangan/default_65_ansi_blocker_tsangan/keymap.c b/layouts/default/65_ansi_blocker_tsangan/default_65_ansi_blocker_tsangan/keymap.c
index b5935888d4..9d251e8efe 100644
--- a/layouts/default/65_ansi_blocker_tsangan/default_65_ansi_blocker_tsangan/keymap.c
+++ b/layouts/default/65_ansi_blocker_tsangan/default_65_ansi_blocker_tsangan/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2020-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ Backsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______,
         _______,          _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                            _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_ansi_blocker_tsangan_split_bs/default_65_ansi_blocker_tsangan_split_bs/keymap.c b/layouts/default/65_ansi_blocker_tsangan_split_bs/default_65_ansi_blocker_tsangan_split_bs/keymap.c
index eef519f090..619e07b446 100644
--- a/layouts/default/65_ansi_blocker_tsangan_split_bs/default_65_ansi_blocker_tsangan_split_bs/keymap.c
+++ b/layouts/default/65_ansi_blocker_tsangan_split_bs/default_65_ansi_blocker_tsangan_split_bs/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │Bsp│Bsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______,
         _______,          _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                            _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_ansi_split_bs/default_65_ansi_split_bs/keymap.c b/layouts/default/65_ansi_split_bs/default_65_ansi_split_bs/keymap.c
index e1dacf6067..2816f75dea 100644
--- a/layouts/default/65_ansi_split_bs/default_65_ansi_split_bs/keymap.c
+++ b/layouts/default/65_ansi_split_bs/default_65_ansi_split_bs/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2020-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = |Bsp|Bsp|Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______,
         _______,          _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______, _______, _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_iso/default_65_iso/keymap.c b/layouts/default/65_iso/default_65_iso/keymap.c
index 245b542c13..4f84ec8094 100644
--- a/layouts/default/65_iso/default_65_iso/keymap.c
+++ b/layouts/default/65_iso/default_65_iso/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2019-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ Backsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PAUS, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______, _______, _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_iso_blocker/default_65_iso_blocker/keymap.c b/layouts/default/65_iso_blocker/default_65_iso_blocker/keymap.c
index 1b1cbce8c4..6f08a42c59 100644
--- a/layouts/default/65_iso_blocker/default_65_iso_blocker/keymap.c
+++ b/layouts/default/65_iso_blocker/default_65_iso_blocker/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2019-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ Backsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PAUS, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_iso_blocker_split_bs/default_65_iso_blocker_split_bs/keymap.c b/layouts/default/65_iso_blocker_split_bs/default_65_iso_blocker_split_bs/keymap.c
index 33ebc159ad..4f58f51b14 100644
--- a/layouts/default/65_iso_blocker_split_bs/default_65_iso_blocker_split_bs/keymap.c
+++ b/layouts/default/65_iso_blocker_split_bs/default_65_iso_blocker_split_bs/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2020-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │Bsp│Bsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PAUS, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_iso_blocker_tsangan/default_65_iso_blocker_tsangan/keymap.c b/layouts/default/65_iso_blocker_tsangan/default_65_iso_blocker_tsangan/keymap.c
index 4dbd379f89..a5eb352101 100644
--- a/layouts/default/65_iso_blocker_tsangan/default_65_iso_blocker_tsangan/keymap.c
+++ b/layouts/default/65_iso_blocker_tsangan/default_65_iso_blocker_tsangan/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───────┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │ Backsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PAUS, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                            _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_iso_blocker_tsangan_split_bs/default_65_iso_blocker_tsangan_split_bs/keymap.c b/layouts/default/65_iso_blocker_tsangan_split_bs/default_65_iso_blocker_tsangan_split_bs/keymap.c
index fa21d951bd..db0b6eef8d 100644
--- a/layouts/default/65_iso_blocker_tsangan_split_bs/default_65_iso_blocker_tsangan_split_bs/keymap.c
+++ b/layouts/default/65_iso_blocker_tsangan_split_bs/default_65_iso_blocker_tsangan_split_bs/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │Bsp│Bsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PAUS, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                            _______,          _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/65_iso_split_bs/default_65_iso_split_bs/keymap.c b/layouts/default/65_iso_split_bs/default_65_iso_split_bs/keymap.c
index 4cd8ddd53b..e0900dd6b7 100644
--- a/layouts/default/65_iso_split_bs/default_65_iso_split_bs/keymap.c
+++ b/layouts/default/65_iso_split_bs/default_65_iso_split_bs/keymap.c
@@ -1,10 +1,9 @@
-// Copyright 2019-2022 QMK (@qmk)
+// Copyright 2023 QMK
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-
     /*
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
      * │Esc│ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 0 │ - │ = │Bsp│Bsp│Hom│
@@ -45,6 +44,5 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PAUS, _______, _______,
         _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______, _______,
         _______, _______, _______,                            _______,                   _______, _______, _______, _______, _______, _______
-    ),
-
+    )
 };
diff --git a/layouts/default/66_ansi/default_66_ansi/keymap.c b/layouts/default/66_ansi/default_66_ansi/keymap.c
index e0a5e95128..88d65e4210 100644
--- a/layouts/default/66_ansi/default_66_ansi/keymap.c
+++ b/layouts/default/66_ansi/default_66_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/66_iso/default_66_iso/keymap.c b/layouts/default/66_iso/default_66_iso/keymap.c
index 1e2c16c9f7..8093ec1c42 100644
--- a/layouts/default/66_iso/default_66_iso/keymap.c
+++ b/layouts/default/66_iso/default_66_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/68_ansi/default_68_ansi/keymap.c b/layouts/default/68_ansi/default_68_ansi/keymap.c
index 97e7e24c27..75200e46d4 100644
--- a/layouts/default/68_ansi/default_68_ansi/keymap.c
+++ b/layouts/default/68_ansi/default_68_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/68_iso/default_68_iso/keymap.c b/layouts/default/68_iso/default_68_iso/keymap.c
index 228057fac7..3e18ce1c82 100644
--- a/layouts/default/68_iso/default_68_iso/keymap.c
+++ b/layouts/default/68_iso/default_68_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/75_ansi/default_75_ansi/keymap.c b/layouts/default/75_ansi/default_75_ansi/keymap.c
index 92fbfead50..74a98bacd9 100644
--- a/layouts/default/75_ansi/default_75_ansi/keymap.c
+++ b/layouts/default/75_ansi/default_75_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/75_iso/default_75_iso/keymap.c b/layouts/default/75_iso/default_75_iso/keymap.c
index 67d83fdaf1..7a9b366822 100644
--- a/layouts/default/75_iso/default_75_iso/keymap.c
+++ b/layouts/default/75_iso/default_75_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/96_ansi/default_96_ansi/keymap.c b/layouts/default/96_ansi/default_96_ansi/keymap.c
index 35ece2f708..09257fd43a 100644
--- a/layouts/default/96_ansi/default_96_ansi/keymap.c
+++ b/layouts/default/96_ansi/default_96_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 /* Copyright 2021 QMK
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/layouts/default/96_iso/default_96_iso/keymap.c b/layouts/default/96_iso/default_96_iso/keymap.c
index 742bb9cec3..c812dfb1d3 100644
--- a/layouts/default/96_iso/default_96_iso/keymap.c
+++ b/layouts/default/96_iso/default_96_iso/keymap.c
@@ -1,18 +1,5 @@
-/* Copyright 2021 QMK
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
diff --git a/layouts/default/alice/default_alice/keymap.c b/layouts/default/alice/default_alice/keymap.c
index 55a689b75e..0a54534c8b 100644
--- a/layouts/default/alice/default_alice/keymap.c
+++ b/layouts/default/alice/default_alice/keymap.c
@@ -1,18 +1,6 @@
-/* Copyright 2020 MudkipMao
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+// Copyright 2020 QMK / MudkipMao
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/alice_split_bs/default_alice_split_bs/keymap.c b/layouts/default/alice_split_bs/default_alice_split_bs/keymap.c
index eb6a9ec7e1..3fabab25b1 100644
--- a/layouts/default/alice_split_bs/default_alice_split_bs/keymap.c
+++ b/layouts/default/alice_split_bs/default_alice_split_bs/keymap.c
@@ -1,18 +1,6 @@
-/* Copyright 2020 MudkipMao, noroadsleft
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+// Copyright 2020 QMK / MudkipMao, James Young (@noroadsleft)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ergodox/default_ergodox/keymap.c b/layouts/default/ergodox/default_ergodox/keymap.c
index e403511721..a7f32116a4 100644
--- a/layouts/default/ergodox/default_ergodox/keymap.c
+++ b/layouts/default/ergodox/default_ergodox/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/fullsize_ansi/default_fullsize_ansi/keymap.c b/layouts/default/fullsize_ansi/default_fullsize_ansi/keymap.c
index 2e7bd55f95..b350c1c28a 100644
--- a/layouts/default/fullsize_ansi/default_fullsize_ansi/keymap.c
+++ b/layouts/default/fullsize_ansi/default_fullsize_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/fullsize_iso/default_fullsize_iso/keymap.c b/layouts/default/fullsize_iso/default_fullsize_iso/keymap.c
index c88693b2d8..a1873be5c8 100644
--- a/layouts/default/fullsize_iso/default_fullsize_iso/keymap.c
+++ b/layouts/default/fullsize_iso/default_fullsize_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/numpad_4x4/default_numpad_4x4/keymap.c b/layouts/default/numpad_4x4/default_numpad_4x4/keymap.c
index 11cb61aff4..b907381f0f 100644
--- a/layouts/default/numpad_4x4/default_numpad_4x4/keymap.c
+++ b/layouts/default/numpad_4x4/default_numpad_4x4/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/numpad_5x4/default_numpad_5x4/keymap.c b/layouts/default/numpad_5x4/default_numpad_5x4/keymap.c
index b69dea2848..2954e61896 100644
--- a/layouts/default/numpad_5x4/default_numpad_5x4/keymap.c
+++ b/layouts/default/numpad_5x4/default_numpad_5x4/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/numpad_5x6/default_numpad_5x6/keymap.c b/layouts/default/numpad_5x6/default_numpad_5x6/keymap.c
index 5ea08e1921..ef00036ecc 100644
--- a/layouts/default/numpad_5x6/default_numpad_5x6/keymap.c
+++ b/layouts/default/numpad_5x6/default_numpad_5x6/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/numpad_6x4/default_numpad_6x4/keymap.c b/layouts/default/numpad_6x4/default_numpad_6x4/keymap.c
index f33574e696..7be963139c 100644
--- a/layouts/default/numpad_6x4/default_numpad_6x4/keymap.c
+++ b/layouts/default/numpad_6x4/default_numpad_6x4/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/numpad_6x5/default_numpad_6x5/keymap.c b/layouts/default/numpad_6x5/default_numpad_6x5/keymap.c
index 5fe7123087..8dc8847ff6 100644
--- a/layouts/default/numpad_6x5/default_numpad_6x5/keymap.c
+++ b/layouts/default/numpad_6x5/default_numpad_6x5/keymap.c
@@ -1,18 +1,5 @@
-/* Copyright 2021 NachoxMacho
-*
-* This program is free software: you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation, either version 2 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.
-*/
+// Copyright 2021 QMK / NachoxMacho
+// SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
 
diff --git a/layouts/default/ortho_1x1/default_ortho_1x1/keymap.c b/layouts/default/ortho_1x1/default_ortho_1x1/keymap.c
index 9bda2ff9a7..af651a7aaa 100644
--- a/layouts/default/ortho_1x1/default_ortho_1x1/keymap.c
+++ b/layouts/default/ortho_1x1/default_ortho_1x1/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_2x3/default_ortho_2x3/keymap.c b/layouts/default/ortho_2x3/default_ortho_2x3/keymap.c
index a38146d020..6759a595b8 100644
--- a/layouts/default/ortho_2x3/default_ortho_2x3/keymap.c
+++ b/layouts/default/ortho_2x3/default_ortho_2x3/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_2x6/default_ortho_2x6/keymap.c b/layouts/default/ortho_2x6/default_ortho_2x6/keymap.c
index 1c8a6b7ef9..ac6d6bd504 100644
--- a/layouts/default/ortho_2x6/default_ortho_2x6/keymap.c
+++ b/layouts/default/ortho_2x6/default_ortho_2x6/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_3x10/default_ortho_3x10/keymap.c b/layouts/default/ortho_3x10/default_ortho_3x10/keymap.c
index 91cf6b34a0..7d6c73be46 100644
--- a/layouts/default/ortho_3x10/default_ortho_3x10/keymap.c
+++ b/layouts/default/ortho_3x10/default_ortho_3x10/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_3x3/default_ortho_3x3/keymap.c b/layouts/default/ortho_3x3/default_ortho_3x3/keymap.c
index fbcca233bd..ea111ba6fe 100644
--- a/layouts/default/ortho_3x3/default_ortho_3x3/keymap.c
+++ b/layouts/default/ortho_3x3/default_ortho_3x3/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_4x10/default_ortho_4x10/keymap.c b/layouts/default/ortho_4x10/default_ortho_4x10/keymap.c
index ee4b6d346e..03ea16c4de 100644
--- a/layouts/default/ortho_4x10/default_ortho_4x10/keymap.c
+++ b/layouts/default/ortho_4x10/default_ortho_4x10/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_4x12/default_ortho_4x12/keymap.c b/layouts/default/ortho_4x12/default_ortho_4x12/keymap.c
index a55d3963b1..d560414ce2 100644
--- a/layouts/default/ortho_4x12/default_ortho_4x12/keymap.c
+++ b/layouts/default/ortho_4x12/default_ortho_4x12/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_4x16/default_ortho_4x16/keymap.c b/layouts/default/ortho_4x16/default_ortho_4x16/keymap.c
index 0703038bdf..46d0fc4665 100644
--- a/layouts/default/ortho_4x16/default_ortho_4x16/keymap.c
+++ b/layouts/default/ortho_4x16/default_ortho_4x16/keymap.c
@@ -1,4 +1,4 @@
-// Copyright 2022 QMK (James Young @noroadsleft)
+// Copyright 2022 QMK / James Young (@noroadsleft)
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include QMK_KEYBOARD_H
diff --git a/layouts/default/ortho_4x4/default_ortho_4x4/keymap.c b/layouts/default/ortho_4x4/default_ortho_4x4/keymap.c
index 26769e0bee..53ae7925cd 100644
--- a/layouts/default/ortho_4x4/default_ortho_4x4/keymap.c
+++ b/layouts/default/ortho_4x4/default_ortho_4x4/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_4x6/default_ortho_4x6/keymap.c b/layouts/default/ortho_4x6/default_ortho_4x6/keymap.c
index 47f2b8dab5..0cf87b8bbc 100644
--- a/layouts/default/ortho_4x6/default_ortho_4x6/keymap.c
+++ b/layouts/default/ortho_4x6/default_ortho_4x6/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_5x10/default_ortho_5x10/keymap.c b/layouts/default/ortho_5x10/default_ortho_5x10/keymap.c
index 1f935473e2..87a50c9d82 100644
--- a/layouts/default/ortho_5x10/default_ortho_5x10/keymap.c
+++ b/layouts/default/ortho_5x10/default_ortho_5x10/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_5x12/default_ortho_5x12/keymap.c b/layouts/default/ortho_5x12/default_ortho_5x12/keymap.c
index 5f6115cefa..cb0617343d 100644
--- a/layouts/default/ortho_5x12/default_ortho_5x12/keymap.c
+++ b/layouts/default/ortho_5x12/default_ortho_5x12/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_5x14/default_ortho_5x14/keymap.c b/layouts/default/ortho_5x14/default_ortho_5x14/keymap.c
index 4b19843105..5816e968d1 100644
--- a/layouts/default/ortho_5x14/default_ortho_5x14/keymap.c
+++ b/layouts/default/ortho_5x14/default_ortho_5x14/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_5x15/default_ortho_5x15/keymap.c b/layouts/default/ortho_5x15/default_ortho_5x15/keymap.c
index 565c810392..d646b99580 100644
--- a/layouts/default/ortho_5x15/default_ortho_5x15/keymap.c
+++ b/layouts/default/ortho_5x15/default_ortho_5x15/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_5x4/default_ortho_5x4/keymap.c b/layouts/default/ortho_5x4/default_ortho_5x4/keymap.c
index c8514a29e0..5354a899bb 100644
--- a/layouts/default/ortho_5x4/default_ortho_5x4/keymap.c
+++ b/layouts/default/ortho_5x4/default_ortho_5x4/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 enum custom_keycodes {
diff --git a/layouts/default/ortho_5x5/default_ortho_5x5/keymap.c b/layouts/default/ortho_5x5/default_ortho_5x5/keymap.c
index fbcd47b79d..04644e40c7 100644
--- a/layouts/default/ortho_5x5/default_ortho_5x5/keymap.c
+++ b/layouts/default/ortho_5x5/default_ortho_5x5/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/ortho_6x4/default_ortho_6x4/keymap.c b/layouts/default/ortho_6x4/default_ortho_6x4/keymap.c
index cf9f7d8963..b6add76db3 100644
--- a/layouts/default/ortho_6x4/default_ortho_6x4/keymap.c
+++ b/layouts/default/ortho_6x4/default_ortho_6x4/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 enum custom_keycodes {
diff --git a/layouts/default/planck_mit/default_planck_mit/keymap.c b/layouts/default/planck_mit/default_planck_mit/keymap.c
index 429e260815..8e24170a34 100644
--- a/layouts/default/planck_mit/default_planck_mit/keymap.c
+++ b/layouts/default/planck_mit/default_planck_mit/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/split_3x5_2/default_split_3x5_2/keymap.c b/layouts/default/split_3x5_2/default_split_3x5_2/keymap.c
index 68ffd797a7..82db680a0b 100644
--- a/layouts/default/split_3x5_2/default_split_3x5_2/keymap.c
+++ b/layouts/default/split_3x5_2/default_split_3x5_2/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/split_3x5_3/default_split_3x5_3/keymap.c b/layouts/default/split_3x5_3/default_split_3x5_3/keymap.c
index f4c3e308fe..909e3fb382 100644
--- a/layouts/default/split_3x5_3/default_split_3x5_3/keymap.c
+++ b/layouts/default/split_3x5_3/default_split_3x5_3/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/split_3x6_3/default_split_3x6_3/keymap.c b/layouts/default/split_3x6_3/default_split_3x6_3/keymap.c
index 4fb2bab573..a4b5f59f50 100644
--- a/layouts/default/split_3x6_3/default_split_3x6_3/keymap.c
+++ b/layouts/default/split_3x6_3/default_split_3x6_3/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_ansi/default_tkl_ansi/keymap.c b/layouts/default/tkl_ansi/default_tkl_ansi/keymap.c
index caed507c75..bdfbdab574 100644
--- a/layouts/default/tkl_ansi/default_tkl_ansi/keymap.c
+++ b/layouts/default/tkl_ansi/default_tkl_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_f13_ansi/default_tkl_f13_ansi/keymap.c b/layouts/default/tkl_f13_ansi/default_tkl_f13_ansi/keymap.c
index a4063f3211..9510c8710a 100644
--- a/layouts/default/tkl_f13_ansi/default_tkl_f13_ansi/keymap.c
+++ b/layouts/default/tkl_f13_ansi/default_tkl_f13_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_f13_ansi_tsangan/default_tkl_f13_ansi_tsangan/keymap.c b/layouts/default/tkl_f13_ansi_tsangan/default_tkl_f13_ansi_tsangan/keymap.c
index 7ca7427405..72b26cb4d2 100644
--- a/layouts/default/tkl_f13_ansi_tsangan/default_tkl_f13_ansi_tsangan/keymap.c
+++ b/layouts/default/tkl_f13_ansi_tsangan/default_tkl_f13_ansi_tsangan/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_f13_iso/default_tkl_f13_iso/keymap.c b/layouts/default/tkl_f13_iso/default_tkl_f13_iso/keymap.c
index 61d00b2df4..5ee81c55ec 100644
--- a/layouts/default/tkl_f13_iso/default_tkl_f13_iso/keymap.c
+++ b/layouts/default/tkl_f13_iso/default_tkl_f13_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_f13_iso_tsangan/default_tkl_f13_iso_tsangan/keymap.c b/layouts/default/tkl_f13_iso_tsangan/default_tkl_f13_iso_tsangan/keymap.c
index 6ca10433d1..1ef3fe09bb 100644
--- a/layouts/default/tkl_f13_iso_tsangan/default_tkl_f13_iso_tsangan/keymap.c
+++ b/layouts/default/tkl_f13_iso_tsangan/default_tkl_f13_iso_tsangan/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_iso/default_tkl_iso/keymap.c b/layouts/default/tkl_iso/default_tkl_iso/keymap.c
index 2c4ffd0128..5ec7384c11 100644
--- a/layouts/default/tkl_iso/default_tkl_iso/keymap.c
+++ b/layouts/default/tkl_iso/default_tkl_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_nofrow_ansi/default_tkl_nofrow_ansi/keymap.c b/layouts/default/tkl_nofrow_ansi/default_tkl_nofrow_ansi/keymap.c
index c2b7ecfeaf..71221fca1e 100644
--- a/layouts/default/tkl_nofrow_ansi/default_tkl_nofrow_ansi/keymap.c
+++ b/layouts/default/tkl_nofrow_ansi/default_tkl_nofrow_ansi/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
diff --git a/layouts/default/tkl_nofrow_iso/default_tkl_nofrow_iso/keymap.c b/layouts/default/tkl_nofrow_iso/default_tkl_nofrow_iso/keymap.c
index 5f6d7bf162..f32b871c49 100644
--- a/layouts/default/tkl_nofrow_iso/default_tkl_nofrow_iso/keymap.c
+++ b/layouts/default/tkl_nofrow_iso/default_tkl_nofrow_iso/keymap.c
@@ -1,3 +1,6 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 #include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {