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fix: backfill DCO and inbound license grant in CONTRIBUTING.md #11

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TMHSDigital merged 1 commit into from
Apr 26, 2026
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fix: backfill DCO and inbound license grant in CONTRIBUTING.md #11

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26 changes: 26 additions & 0 deletions CONTRIBUTING.md
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Expand Up @@ -46,3 +46,29 @@ See `.cursorrules` for writing conventions. Key points:
## Reporting Issues

Open an issue on GitHub. Include steps to reproduce, expected behavior, and actual behavior.

## Developer Certificate of Origin and Inbound License Grant

This project uses CC-BY-NC-ND-4.0 as its outbound license, which forbids derivatives. Every pull request is a derivative. Contributions are accepted inbound under a broader grant via the Developer Certificate of Origin (DCO), which resolves the conflict so the project can accept and redistribute contributions.

### Required grant

By submitting a contribution to this repository, you certify that you have the right to do so under the Developer Certificate of Origin (DCO) 1.1, and you grant TMHSDigital a perpetual, worldwide, non-exclusive, royalty-free, irrevocable license to use, reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute your contribution under the project's current license (CC-BY-NC-ND-4.0) or any successor license chosen by the project.

### DCO sign-off

Every commit in a pull request must have a `Signed-off-by:` trailer matching the commit author:

```
Signed-off-by: Jane Developer <jane@example.com>
```

Signing is done at commit time:

```bash
git commit -s -m "feat: add new skill"
```

The GitHub DCO App enforces this on every PR.

For the full inbound/outbound model and rationale, see [`standards/licensing.md`](https://github.com/TMHSDigital/Developer-Tools-Directory/blob/main/standards/licensing.md) in the Developer-Tools-Directory meta-repo.
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