Book Depth

• “On the day this level held, were there real bids supporting it?”
• “Was that resistance above price actually filled with sell orders, or was the book empty?”
• “Is the support stacked tight to price or way out further away?”
• “Did the book lean buy-side or sell-side on the day the move started?”
• “Across all coins right now, who has the most one-sided book?”

Book Depth shows you where the crowd parked their orders around price, day by day. Gold below the candle means bids were stacked there. Silver above the candle means asks were stacked there. The closer the rectangle to the candle, the closer to price the orders were resting. The taller the rectangle, the harder the skew on that side.

Three bands let you read the shape of commitment. Heavy gold near, silver in the middle, gold far is a coin where the immediate buyers and the long-distance buyers are squeezing the seller layer. A different signal than “all bids” or “all asks”.

You don’t read order books. You watch where the gold and the silver sit around the candles.

• Validate Sigma zonesA gold Sigma zone with gold Book Depth bars stacking under the zone day after day means real demand kept reloading at that level. Zone is well-defended. The opposite (gold zone but Book Depth ask-heavy on those days) suggests sellers were waiting in the zone, the zone is fragile.
• Confirm support/resistance qualityA flat horizontal level is just price memory. The same line with consistent gold underneath (support) or consistent silver above (resistance) across many days is a level the book itself agreed with.
• Read the shape of commitmentGold band 1 plus gold band 3, with band 2 neutral, on the same day is the “barbell” posture. Buyers tight to price and parking long distance, with nothing in between. Often a tell of patient accumulation.
• Spot the shiftA run of mostly silver bars (sellers stacked) flipping to mostly gold bars often precedes a basing pattern. The book changes its mind before price does.
• Filter the universe with the Scanner glowScanner tiles glow gold or silver at the edges based on the latest day’s averaged book ratio. A scan of the heatmap tells you which coins entered the most one-sided night, before you open any chart.
• Combine with Whale WallsBook Depth is the aggregate of every order in the band. Whale Walls is the individual outliers. A band that is gold (broad bid weight) plus a cyan whale wall sitting inside it means both the crowd and a whale agreed on that price. The deepest read of support the app can give you.

Book Depth is a daily snapshot, not a live state. The wall you saw at end-of-day yesterday may be gone now. For live commitment, use Whale Walls. It shows the order book, not what was traded; for traded direction use Buy/Sell, for traded size use Cash Volume.

Older portions of the chart will simply have no Book Depth bars; the collector started recently. Don’t use it as a price target on its own, and don’t lean on it for low-liquidity coins where thin books make ratios noisy.

The order book is the only structural part of a market that doesn’t depend on what already traded. Two coins can have the same chart pattern and the same volume but completely different books, one with stacked bids, one with stacked asks. Book Depth turns that hidden structure into a colour, every day, on every bar of the historical chart. It is a map of where the crowd was committed, persisted across time so you can read it after the fact.