Quoted verbatim from the "License" section of https://opentdb.com/api_config.php, read on the day the pack was built: "All data provided by the API is available under the Creative Commons Attribution-ShareAlike 4.0 International License." CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/. The page as fetched is archived, unaltered, in data/catalog/licenses/tv3-video-games-medium-en.html; it is the archive, not this field, that stands as the proof of rights.