{"type":"raw_signal","id":"nr-a153-claude-check-files-provenance-surface","slug":"claude-check-files-provenance-surface","title":"Claude Check Files Adds a User-Facing Provenance Surface","description":"Anthropic's Check Files page gives users a direct way to inspect whether a file was made with Claude.","observed_at":"2026-09-05T20:00:00+03:00","record_date":"2026-09-05","date_kind":"observed_at","why_it_matters":"This is not a broad authenticity solution. The site value is narrower: model vendors are starting to expose user-facing inspection workflows for artifacts created in their own systems. The follow-up is whether those checks become interoperable, auditable, and available at publish or export boundaries.","novelty":"new","verification_level":"source-inspected","signal_type":"newsroom_basket_signal","source_platform":"claude.com","topics":["provenance","trust","artifacts","claude"],"entities":["Anthropic","Claude"],"related_patterns":["artifact-provenance"],"source_url":"https://claude.com/check-files","source_urls":["https://claude.com/check-files"],"basket":{"id":"a153bc19-d6a9-42fb-b661-d17c3d8775c7","revision":1,"review_ref":"A153-015","cluster_id":"9a098c77-8f38-4d87-94d4-2a6474b2451d","mention_count":3,"source_lanes":["claude_batch","telegram_channel_scan"]},"schema_version":"newruntime-agent-readable-v0.2","stable_id":"signal:claude-check-files-provenance-surface","retrieval_nugget":"Anthropic's Check Files page gives users a direct way to inspect whether a file was made with Claude. Anthropic's Check Files page is recorded as a provenance-tooling signal. It gives users a direct surface for checking whether files were made with Claude, which matters because generation provenance is shifting from metadata discussions into product UX. This is not a broad","status":"published","visuals":[],"routes":{"html":"https://newruntime.com/signals/claude-check-files-provenance-surface/","markdown":"https://newruntime.com/signals/claude-check-files-provenance-surface.md","json":"https://newruntime.com/signals/claude-check-files-provenance-surface.json"}}