{"verified":true,"status":"passing","full_history_check_age_days":0,"series_served":{"first":"2022-11-01","last":"2026-07-24","points":930},"checks":{"internal_coherence":{"question":"Does compounding SARB's published daily ZARONIA rates reproduce SARB's published index?","method":"/v1/conventions -> index_methodology"},"storage_faithfulness":{"question":"Is every index value we store and serve identical to the value SARB published?","method":"re-fetch the full published history and compare every point against the stored series"}},"last_full_history_check":{"ran_at":"2026-07-27T09:02:06.616Z","covering":{"first":"2022-11-01","last":"2026-07-24","points":930},"compounding_steps_checked":929,"internal_coherence_passed":true,"storage_faithfulness_passed":true,"worst_relative_deviation":8.675019803176883e-15,"worst_deviation_date":"2026-06-17"},"last_daily_check":{"ran_at":"2026-07-27T08:18:10.019Z","covering":{"first":"2026-07-06","last":"2026-07-24","points":15},"compounding_steps_checked":14,"internal_coherence_passed":true,"storage_faithfulness_passed":null,"worst_relative_deviation":5.816171417592672e-15,"worst_deviation_date":"2026-07-23"},"schedule":{"daily":"every ingest cross-checks the most recent ~21 days before writing","weekly":"full history re-verified Mondays ~09:00 UTC"},"disclaimer":"Independent recomputation from the published SARB Compounded ZARONIA Index — not financial advice and not an official SARB, JSE or bank figure. Confirm material differences with your counterparty before acting."}