# Licensing

OpenScribe is multi-part, so it uses a licence appropriate to each part. All licence
texts are in [`LICENSES/`](LICENSES/). The top-level [`LICENSE`](LICENSE) is a copy of
GPL-3.0 so the forge detects the primary code licence.

| Part | Paths | Licence |
|------|-------|---------|
| Firmware, server, app (all source code) | `firmware/`, `server/`, `app/` | **GPL-3.0-only** |
| Hardware design (BOM, wiring, any future PCB) | `hardware/` | **CERN-OHL-S-2.0** |
| 3D case models and documentation | `case/`, `docs/`, `state/`, `*.md` | **CC-BY-SA-4.0** |

Rationale: strong copyleft keeps derivatives open, which is the point of the project.
CERN-OHL-S and CC-BY-SA are the standard reciprocal licences for open hardware and for
creative/documentation content respectively. See `state/DECISIONS.md` for the full record.

`LICENSES/Apache-2.0.txt` is included for a possible future permissive client SDK; it is
not applied to anything yet.

Where practical, files carry an `SPDX-License-Identifier:` header so the licensing is
machine-checkable (REUSE style). The OpenAPI spec `api/openapi.yaml` is CC-BY-SA-4.0 as
documentation of the interface.

The name "Plaud" and any Plaud trademarks belong to their owner. OpenScribe is an
independent, clean-room, open-source project inspired by that class of device. It is not
affiliated with, endorsed by, or derived from Plaud.