Data Catalogue Monitor

Tracking every change on data catalogue pages that very large online platforms and search engines must publish under Article 40(4) of the Digital Services Act ↗.

25 platforms monitored

460 changes on record 38 significant 422 minor

85 monitoring runs

AI Assessment noise claude / claude-haiku-4-5

All 8 platforms showed only noise: functional UI updates (Wikipedia), automatic metadata drift (LinkedIn), page rendering variations (Google properties), and technical formatting changes with no substantive content or policy impact.

Wikipedia noise Linkedin DE noise Google Google Search Data Catalogue noise Google Google Shopping Data Catalogue noise Google Youtube Data Catalogue noise Google DE Google Search Data Catalogue DE noise Google DE Google Shopping Data Catalogue DE noise Google DE Youtube Data Catalogue DE noise

Per-platform breakdown (8 platforms analyzed)

Wikipedia noise high confidence The change adds print/export utility links (printable version, PDF download, book creator) that are standard Wikimedia Foundation platform features, not substantive content or research-relevant catalogue changes. These are functional interface elements, not new data endpoints or policy updates.

Linkedin DE noise high confidence Only the relative timestamp ('Vor 8 Monaten' → 'Vor 9 Monaten') changed, reflecting automatic page age updates rather than substantive content revision. This is metadata-only drift with no research or policy significance.

Google Google Search Data Catalogue noise high confidence No real change. The page alternates between two versions of itself (for example, with and without a login prompt), and this capture matches a version seen in a recent check. Classified automatically without AI analysis.

Google Google Shopping Data Catalogue noise high confidence No real change. The page alternates between two versions of itself (for example, with and without a login prompt), and this capture matches a version seen in a recent check. Classified automatically without AI analysis.

Google Youtube Data Catalogue noise high confidence No visible change. The page's technical fingerprint changed, but no text or links differ - invisible page machinery, not content. Classified automatically without AI analysis.

Google DE Google Search Data Catalogue DE noise high confidence No visible change. The page's technical fingerprint changed, but no text or links differ - invisible page machinery, not content. Classified automatically without AI analysis.

Google DE Google Shopping Data Catalogue DE noise high confidence No visible change. The page's technical fingerprint changed, but no text or links differ - invisible page machinery, not content. Classified automatically without AI analysis.

Google DE Youtube Data Catalogue DE noise high confidence Language selector links were converted from plain text to clickable URLs with ?hl= locale parameters. This is a technical formatting change with no substantive impact on content or research value—the links already pointed to the same page in different languages, now they are just explicitly linked rather than plain text.

Data Catalogue Monitor

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