Every source, scored by what it actually did

Positive weight: claims the desk approved, plus half weight each time the source corroborated another outlet's reporting or was independently corroborated itself. Negative weight: claims rejected, double weight for approved claims later contested, and verifier source-concern flags. The blend is shrunk toward a neutral 50 until a source has real history, so nobody buys a high score with three good days. Duplicate reports folded by the clustering pass are neutral — reprinting a fact isn't a sin, it's corroboration, and it's counted as such. Identity, ownership, and state-affiliation labels are machine-drafted with cited evidence and published only after editor review — the same rule as everything else here. The ledger is append-only: yesterday's numbers never change, and the full history is public on each source's page.