Every important fact carries source, date, confidence, and last-checked.
A fact you cannot check is not a fact you can act on. Every important answer carries its receipt: source, date, confidence, and last-checked. Those four fields are the minimum. Without them the answer is unverified. The same pattern runs on this site. Click a mark, land on a claim, read the evidence.
A receipt is the reason you can trust an answer or audit it in one click. It is not decoration. It is the record.
On every important fact: where it came from, when, at what confidence, and when it was last checked. The same pattern is used on this website — click any check mark.
Receipts travel with exports. If you walk away with the briefcase, the evidence walks with you.
Every important fact carries source, date, confidence, and last-checked.
An answer is checkable when you can open its receipt and see where it came from.
Facts are re-checked on a schedule set by how critical their freshness is.
This site uses the same receipt pattern on its own claims.
Machine-readable → index.json · /ai-info · llms.txt