Update licenses and add third party notice

.github/actions/test-template/action.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2025, NVIDIA CORPORATION.
+# Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/scripts/notify.py

@@ -1,4 +1,5 @@
-# Copyright (c) 2025, NVIDIA CORPORATION.
+# Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/cicd-approve-test-queue.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2025, NVIDIA CORPORATION.  All rights reserved.
+# Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/cicd-main-speech.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2025, NVIDIA CORPORATION.
+# Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/cicd-main-unit-tests.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2025, NVIDIA CORPORATION.
+# Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/cicd-main.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2025, NVIDIA CORPORATION.
+# Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/copyright-check.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2020-2021, NVIDIA CORPORATION.
+# Copyright (c) 2020-2021, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/release-docs.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2026, NVIDIA CORPORATION.
+# Copyright (c) 2026, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/release-nightly-docs.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2026, NVIDIA CORPORATION.
+# Copyright (c) 2026, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/release.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2020-2026, NVIDIA CORPORATION.
+# Copyright (c) 2020-2026, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.github/workflows/secrets-detector.yml

@@ -1,4 +1,5 @@
-# Copyright (c) 2020-2021, NVIDIA CORPORATION.
+# Copyright (c) 2020-2021, NVIDIA CORPORATION & AFFILIATES.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.pre-commit-config.yaml

@@ -1,4 +1,5 @@
-# Copyright (c) 2022, NVIDIA CORPORATION.  All rights reserved.
+# Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.readthedocs.yml

@@ -1,5 +1,6 @@
 # =============================================================================
-# Copyright (c) 2020 NVIDIA. All Rights Reserved.
+# Copyright (c) 2020 NVIDIA CORPORATION & AFFILIATES. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

CONTRIBUTING.md

@@ -13,6 +13,48 @@ We do all of NeMo's development in the open. Contributions from NeMo community a
 4) Make sure relevant unittests finish successfully before sending PR
 5) Send your PR and request a review
 
+## Signing Your Work
+
+All contributions must be signed off to certify agreement with the Developer Certificate of Origin below. Add a
+`Signed-off-by` trailer to each commit by using `git commit -s`.
+
+```text
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+```
+
 ## Unit tests
 Quick tests (locally, while developing)
 ```

LICENSE

@@ -1,3 +1,5 @@
+Copyright (c) 2019-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -198,4 +200,4 @@
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
-   limitations under the License.
+   limitations under the License.