# MRTDown Data License

Unless a file or generated notice says otherwise, MRTDown-authored canonical
data and generated data exports in this repository are licensed under the
Creative Commons Attribution 4.0 International License (`CC-BY-4.0`):

https://creativecommons.org/licenses/by/4.0/

This covers MRTDown-authored static rail entities, issue metadata, normalized
claims, impact events, generated fixture records, and generated export
metadata.

## Third-Party Material

Evidence records may include third-party source text, posts, article metadata,
government or agency source material, user-submitted report text, trademarks,
screenshots, or links to upstream publications. MRTDown does not license those
third-party materials under `CC-BY-4.0`.

Consumers must follow the upstream rights and terms for third-party material.
The source registry in `data/rights/source-registry.json` classifies recurring
source types and records the attribution policy used by generated artifacts.

## Singapore Open Data

Where data is mirrored or derived from Singapore government open data sources,
upstream Singapore Open Data Licence notices continue to apply to the upstream
material. MRTDown licenses only its own curation, normalization, and derived
metadata under `CC-BY-4.0`.

## Source Code

This data license does not apply to package source code, scripts, or tooling.
Package source code, scripts, tooling, and associated documentation are
licensed separately under the MIT License as described in `LICENSE-CODE.md`.