The spot CVD is a core chart for analyzing the order book of the BTC/USDT spot pair, largely consisting of the upper 'Volume Heatmap' and the lower 'Cumulative Volume Delta (CVD)' indicators.

1. Upper: Volume Heatmap This indicator tracks the volume scale generated at specific price levels. The background color of a zone brightens when the price stays in that range for a long time or moves significantly. In particular, zones where the color appears bright are highly likely to act as strong support or resistance levels in the future chart.

2. Lower: Cumulative Volume Delta (CVD) This indicator shows the buying and selling order trends by fund size. As buy orders increase, the line of the corresponding color rises, and the meaning of each line is as follows.

• Yellow line: Small orders ranging from $100 to $1,000
• Brown line: Large orders ranging from $1 million to $10 million