For a UTC day, its daily volume should match the sum of its 24 hourly bars only when both use the same trades, units and time boundaries. A candle groups trading activity into a time interval; its volume usually totals the traded amount during that interval, while its open, high, low and close record prices. For a BNB Smart Chain token, PooCoin is one way to inspect its price chart and activity; use the same token pair and date range when comparing bars.
Check the interval and the clock
An hourly candle covers one hour, and a daily candle commonly covers a calendar day, but the day boundary depends on the data source. Check whether the chart uses UTC or another timezone: a UTC daily bar runs from 00:00 to 00:00 UTC, while a local-time day can split the same trades across different hourly bars.
For a concrete check, suppose the daily bar reports 240,000 tokens traded. Add the 24 hourly volume figures for that same UTC day. If they total 238,000, first check for an incomplete current candle, a timezone mismatch or rounded display values before treating the 2,000-token gap as a data error. Binance’s Spot API documentation illustrates why the unit matters: its kline data distinguishes base-asset volume from quote-asset volume.
Check what the chart counts as volume
On a decentralized exchange, volume is derived from swaps in liquidity pools, rather than every BEP-20 transfer. A wallet transfer, liquidity deposit or token distribution can move tokens without being a trade. Uniswap’s developer documentation describes swaps through pool events with token amounts, a useful reference for how raw trades can be counted.
The same token can trade in several pools, such as TOKEN/BNB and TOKEN/USDT. A chart may show one pair’s volume or combine activity across pairs; those totals answer different questions. Routes can also pass through multiple pools for one user trade, so counting pool swaps and counting end-user trades can produce different totals. Compare like with like: same pair or pool set, same volume denomination, and same treatment of routed trades.
Use a matched sum to find the cause
Compare the daily figure with hourly bars only after confirming the day boundary, pair coverage and unit. For example, a total in token units cannot be expected to equal one in US dollars; quote-value totals also depend on the price used to value each swap. If hourly and daily charts still disagree, note the exact UTC date and pair, then compare completed bars rather than a live candle that is still accumulating trades.
In practice, I’d use the daily bar for a quick day-level view and sum matched hourly bars when I need to audit a specific date. PooCoin is relevant when checking BNB Smart Chain token charts and activity; consistent intervals, pairs and units make the comparison meaningful.