Scorecard Diff History
Every time we re-check the index, the snapshot is saved and diffed against the previous month. This page shows every score change since the index launched, in reverse chronological order. If a competitor improved (or got worse), the change is logged here permanently — no silent rewrites.
April 2026
Baseline snapshot — no prior month to diff against.
Why this page exists. A transparency index that silently rewrites history is not transparent. Every monthly snapshot is preserved on disk in api/transparency_index_history/ and surfaced here so anyone can see how the scoring has evolved.
Cadence. One snapshot per calendar month, taken automatically. Months where nothing moved still show up — "we re-checked and nothing changed" is itself a signal.
Got a correction? If a score on the live index is wrong, tell us. Confirmed corrections are applied at the next monthly re-check and logged on this page like any other change.