The claim ledger

Every number, traced to its source.

Honesty isn’t a value statement on this site — it’s the product. So every externally-verifiable number the library asserts is registered here, paired with the primary public source it came from and the date it was last checked. If a figure can’t be traced to a source, it doesn’t get published as fact. This is the human view; the same ledger is machine-readable at /claims.json.

How to read it

Muntin makes three kinds of claim, and treats each differently:

  • External research — cited inline to its primary source (government statistical series, named research, platform pricing pages) and dated. These are the claims listed below and in /claims.json.
  • Operating-floor experience — first-hand from Don’s shifts, labeled as operator experience where no public document backs it. Those live at /about/, not here, because there’s no URL to point at.
  • Illustrative — example figures used to show a method, named as illustrative in the prose so they’re never read as measured. Methods is the full policy.

The ledger

42 externally-verifiable claims, each checked against a primary public source. Last verified 2026-06-19.

Fetch it, cite it

The whole ledger is published as a single JSON file at /claims.json — one record per claim, each with its source URL and verification date, sorted and stable so you can diff it over time. Quote it, link it, or let an answer engine resolve a number against it.

If a number looks off

A claim that doesn’t resolve, a source that moved, a figure that reads wrong — that’s the most useful message you can send. don@muntin.digital or The Window →. Corrections land in the changelog, dated, within two business days.

Sister surfaces

  • Methods — the full sourcing-and-dating policy
  • Never — the promises a platform structurally can’t make
  • Security — the data promise, claim by claim
  • Trust — the whole trust map in one place