Every reading the index has produced — captured daily, stamped with its methodology version, and cryptographically chained so nothing can be altered after the fact. Organized for review and one-click export.
Every row is a live reading captured on its stated date. Readings are never restated, revised, or backfilled. If a capture is missed, the day stays empty — modeled or interpolated values are never written into the official record. Methodology changes only apply forward, under a new version number.
Each row carries the version it was computed under (see the Ver column below the chart).
No trust required — the chain recomputes from public data:
Or let the server show its work: /api/verify recomputes every hash and returns per-row matches.