Frank Stellmacher
7f03a9536a
* docs: add NOTICE and TRADEMARK files Adds a NOTICE.md with the GPLv3 §7(b) attribution-preservation terms that derivative works must carry forward, and a TRADEMARK.md that covers the Psysonic name, logo, brand identity, and the names of original Psysonic features (in particular Orbit) — none of which are licensed under the GPLv3. Forks remain free under GPLv3 to reuse the code, but must rename Psysonic-branded assets and feature names, and must preserve the attribution that original Psysonic features were designed and implemented in this project. * docs(readme): add Forks and Attribution section Points readers at the GPLv3 freedoms while clarifying the expectations for forks: keep the project name and feature names as documented in TRADEMARK.md, preserve attribution as required by NOTICE.md, and do not present original Psysonic work (such as Orbit) as independent creations of a fork.
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Notice
Psysonic is licensed under the GNU GPLv3.
Psysonic, including features such as Orbit (synchronized shared listening sessions), was originally designed and implemented by the Psysonic project maintainers and contributors.
Forks and modified versions are welcome under the GPLv3, but they must preserve copyright notices, license information, and clear attribution to the original Psysonic project.
Modified versions must not imply that original Psysonic features were independently created by the fork, nor imply endorsement by the Psysonic project.
Required Attribution for Derivative Works
The following attribution requirements apply to all derivative works under the additional terms permitted by GPLv3 §7(b). Forks and redistributions must preserve these notices intact:
- The unmodified contents of this
NOTICE.mdfile must be retained in the source tree of any fork or derivative work. - Derivative works that include or are based on the Orbit feature — its design, protocol, or implementation — must clearly state in their own documentation and release notes that the Orbit feature was originally designed and implemented in Psysonic, and must not present Orbit's design or implementation as independent original work of the fork.
- The user-facing name "Orbit" is a Psysonic feature mark and may
not be reused by forks; see
TRADEMARK.md. The attribution requirement in (2) applies regardless of what the feature is renamed to in a fork. - The same applies to any other original Psysonic feature that a fork chooses to retain.
These terms do not restrict the freedoms granted by the GPLv3; they are attribution-preservation terms explicitly permitted by GPLv3 §7(b) and must be carried forward in further redistribution.