Stacked imbalances in the footprint of a symbol, computed on the consolidated trade tape of Binance, Bybit, OKX and Hyperliquid. Answers: "Any stacked buying imbalance on BTC in the last hour?", "Where did aggressive selling stack up this morning?", "Which price bands saw one-sided market orders?". Rule (diagonal, the same as the MarketTrace footprint chart): each candle is split into price rows bucket wide; rows with no trades are skipped, so a row's neighbour is the nearest traded row above or below. A row is a buy imbalance when its taker-buy volume is at least ratio × the taker-sell volume of the nearest traded row below it, and a sell imbalance when its taker-sell volume is at least ratio × the taker-buy volume of the nearest traded row above it; a zero opposite side counts, zero against zero does not. A row counts only if its total volume is at least 10% of the candle's largest row. A stacked imbalance = 3 or more consecutive traded rows flagged on the same side within one candle; a row can sit in a buy run and a sell run at once. ratio = 2, 3 or 4 (default 3). interval = 1m, 5m, 15m or 1h candles (default 1m). Per event: t = candle open, epoch ms; kind = buy (aggressive buying) or sell (aggressive selling); low/high = USD band from the lower edge of the run's lowest row to the upper edge of its highest row (it may include untraded rows); rows = flagged rows in the run; usd = dominant-side volume of the run × row price, whole dollars; partial = true while the candle is still forming or closed less than 3 minutes ago (the tape may still add trades). candles = candles with trades in the window. counts = runs per kind in the whole window; events lists at most limit of them (1..=150, default 50): when there are more, the LARGEST by usd are kept and truncated=true; the list is ordered by time. kinds = buy and/or sell (default both). On BTC at ratio 3 a typical hour has about 38 runs on 1m candles, 13 on 5m, 4 on 15m and 1 on 1h. Window: from/to as RFC3339, YYYY-MM-DD or epoch ms; default the last hour; a candle is included when its open lies in [from, to); at most 12 h per call and from no older than 31 days, beyond either is an error, not a clamp. Rows are never merged: when zoomed out the chart merges rows and outlines fewer, wider runs, so it matches this output only at a zoom where each row is one bucket. coverage.venues lists the venues with tape in the window; an empty list means no tape there (ZEC and ENA keep a 14-day tape). Descriptive: an imbalance states where aggressive volume was one-sided, not what price will do. Read-only.