The per-match status ledger — every status / event_status transition with its UTC instant (BASIC, history)

Added 2026-09-12. Append-only, oldest first: one row per change of status and/or event_status, with the instant we published it, the value before and the effective value after, the derived outcome, and the newest score row at that instant. A correction is a new row, never an edit — a close published as unresolved and later confirmed shows the flip to completed; a completion that reopened shows completed -> live. basis: observed rows exist from 2026-09-11T22:45:48Z; basis: backfill rows (2026-09-12) were reconstructed from the one stamp per kind the match row kept before the ledger existed (last promotion to live from 2026-09-05, completion instant from 2026-08-21, last reopen, last event_status change) — one row per stamp, overwritten intermediate transitions are not recovered. A correction to a PUBLISHED result — status, event_status, winner or the final score changing after the match was first published as completed — is a new row with basis: restatement (from 2026-09-22), never a silent edit; result_restated_at / result_version on the match summarise them and GET /history/matches?restated_since= finds them. History capability (BASIC and the Historical Data plans), like the tape.