Seven million bars or five thousand

Verdict: a higher bar count does not prove a more complete history. Gold Snap records 7,901,463 bars because its chart interval is finer than the other examples.

The interval changes the count

All four audits cover XAUUSD from the same start date to the same end date. Their totals differ because one hourly bar represents much more time than one minute bar.

The bar count is therefore useful only beside the chart interval. Comparing the totals alone would make the finer chart look more complete even when the audits describe the same period.

Coverage is a ratio, not a grade

Each audit converts its bar total into minutes and compares that value with an expected weekday total. Coarser bars receive their full interval even when trading occupied only part of it.

That is why a coverage ratio can sit slightly above one. It does not mean the history contains extra time, and a lower ratio on a finer chart does not by itself prove missing market data.

Read three fields together

Use the reported bars, chart interval and coverage method as one block. A late first trade is more informative when the history reaches the requested start, but the ratio cannot tell you which individual minutes are absent.

Open the Gold Snap audit to see its data quality evidence beside the strategy result.