Creative Commons Attribution 4.0 International

The SunsetDiff dataset (the JSON and CSV files under /dataset and /api/v1, and the data files that feed them) is licensed under CC BY 4.0.

You can copy and share it if you give credit to SunsetDiff and link to the license:
https://creativecommons.org/licenses/by/4.0/

The website code is MIT. See LICENSE.txt.