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orderbook is withheld from sale. Cannot rebuild the dYdX order book from this data. dYdX's v4_orderbook channel sends each change as one price level with its new absolute size, and the update carries no timestamp and no sequence number. We deduplicate these updates by their content (market + level), so whenever a level returns to a size it already held earlier in the same minute or 2-hour file, that update is discarded as a duplicate. Measured on 2026-09-29: about 26% of updates are dropped per minute and a further 18-20% per 2-hour file, about 40% in total, and 99.8% of the dropped updates changed the book. Replaying what we store therefore does not reproduce dYdX's book. Not for sale until the recorder keeps a per-update id; data already written cannot be repaired.

Bytes and rows are totals across all recorded days, including days not yet sellable.