AddictingSports
Production Data Sources
This page lists sources that are actually used in production. Internal source evaluations and rights reviews are not published here.
NFL
nflverse provides season-level NFL statistics under its published project terms and attribution requirements.
Baseball and hockey
Published MLB and NHL questions use curated, source-cited records that pass the same puzzle validation checks.
Source questions
Contact us if you need the provenance record for a published question or believe an attribution is incomplete.