Every published data site makes mistakes. Most sites either bury them or silently overwrite them and move on.
We prefer to record them, because reading a corrections log is one of the more useful ways for a reader to calibrate how much to trust a data source. If we hide the mistakes, you have to assume we made none — an assumption no one should extend to us or anyone else.
What follows is the running log of substantive corrections and data-pipeline fixes we have made since this site went live. Cosmetic issues (typos, broken links, styling bugs) are not listed; genuine data or methodology errors are.
2025-03
MCX rupee-conversion sign error, first two weeks after launch. Our initial MCX premium calculation applied the INR/USD FX conversion in the wrong direction, systematically overstating MCX premium by approximately 2 percentage points. Discovered when the reported premium diverged consistently from the value a reader calculated manually from the MCX terminal.
Fixed within 6 hours of the report.
2025-06
SGE Ag(T+D) unit-conversion bug. The Ag(T+D) contract is quoted in CNY per gram but the contract unit is 15 kg; for a short window in June our pipeline erroneously multiplied by contract size in one code path, producing a silver premium off by three orders of magnitude on some days. Caught during a scheduled review when the plotted line went outside any plausible range.
Fixed within two hours.
2026-02
LBMA reading source change. We switched from a spot-price-derived LBMA proxy to the direct lbma_gold_pm and lbma_silver fields provided by Metals.dev. The change made the LBMA-COMEX premium series more accurate but introduced a small level shift where the new series joined the old.
Noted on the methodology page and visible as a step in the LBMA chart around February 12, 2026.
2026-05
Text correction: KRX and JPX references. Early editorial content and page metadata referenced Korea Exchange (KRX) and Japan Exchange Group (JPX) as covered markets. Neither was ever fully implemented; the market coverage has been COMEX, SGE, MCX, and LBMA since launch.
All text references were rewritten in May 2026 to match actual coverage.
2026-07
Exchange-rate fallback removed. A silent || 1 fallback existed in the FX conversion layer for cases where the exchange-rate API returned no value for a specific currency. Replaced with an explicit failure and a data-source marker on the affected card, so readers see "data unavailable" rather than a silently wrong number.
2026-07
Cron authentication changed to fail-closed. Our warm-cache and history-snapshot cron endpoints previously continued if the CRON_SECRET environment variable was unset, meaning an unauthenticated caller could trigger them. Changed to reject requests when the secret is missing.
A security correction with data-integrity implications.
How to report a suspected error
Email us via the contact page. Please include the specific market, date, and value you observed, and how you calculated or read the alternative figure.
We aim to reply within one business day. If we agree it is an error, we log it here within a week of the fix.
Log maintained by the Market Research Desk. Corrections are logged in the month the fix shipped.
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