Public log

Corrections log

Current through Sep 29, 2026

Every correction across our section datasets is recorded here: section, what changed, why, and who requested it. Entries are dated, and none is ever removed. Corrections are free for everyone, always, and verified errors are fixed within five business days.

3194 entries, newest first. Each links its change to a section, scope and the party that requested it.

A SHA-256 hash-chained audit log underlies the price data: each dated entry commits to the data as it stood that day and to the previous entry's head, so altering a past entry breaks every entry after it. Removing the newest entry breaks no link, so the chain alone cannot show it; one entry has been removed that way — entry 17, on 2026-07-25, minutes after it was written — and the corrections log records it. Since 2026-10-22, history is not rewritten silently. Each removal of material we may not publish, or of a claim we got wrong, is logged in /corrections/ with its date and reason. Before that day not every change was logged when it was made; the log now describes those we have found. See each section's methodology for how changes are verified before they are published.