references/source-integrity.md

# Evidence grounding for factual visuals

Prefer user-provided authoritative documents, then official current sources, then strong secondary sources. A chart that looks convincing but uses invented values fails.

Evidence ledger fields: claim ID, text, source document/URL, source page/line, retrieval date where freshness matters, unit, population, year/window, verification status.

Do not invent numbers, rankings, dates, locations, customer counts, prices or quotes. For conflicts, surface the disagreement or omit disputed value. For a template, placeholders must be visibly labeled.

Derived values must specify denominators, grouping grain and rounding. Avoid comparing incompatible periods or totals. If user asks for a factual graphic about current information, verify using available web or connected-source tools first and cite sources in prose or on the visual when appropriate.