Policy change tracking

When a site quietly changes its terms, 2257 statement, or DMCA/removal policy.

How it’s collected

Each policy document’s text is hashed on every visit; a new version is recorded only when the content hash changes, with a summary of what changed.

Known limits

• Tracks the text of the documents we monitor; it does not interpret their legal effect.

See it in use: Movements. Found an error? How we handle corrections.

Every figure in this dataset is drawn from the source above and dated. This is measured, first-party data — where a number is an estimate it is labelled as one. This site is in development.