One coin's spot taker buy and sell volume, summed across exchanges, over time

One coin's spot taker flow over time: the US-dollar volume that takers bought (market buys, lifting the offer) and sold (market sells, hitting the bid) on the coin's spot pairs, summed across twelve major centralized exchanges (Binance, OKX, Bybit, Coinbase, Bitfinex, Kraken, Gemini, Gate, Bitget, Bitstamp, Crypto.com, Upbit), per time bucket, oldest first, with the net of the two. Spot only: not perpetuals or dated futures. Its running sum from the first returned bucket is the cumulative volume delta over that window. The series starts at the coin's first traded bucket; after it, a side on which no taker traded states 0. The newest bucket is normally the one still in progress when the figures were read (complete: false, its figures still growing); it counts toward limit. An answer may be served from a cache up to a few minutes old. symbol is the coin ticker (e.g. "BTC"), matched case-insensitively — not a pair, not a token mint or contract address, and not scoped to any of this API's chains. An unknown ticker answers 404. With venue (optionally quote), the same series for the coin's one pair on that exchange instead of the cross-exchange sum — still in US dollars whatever the quote currency, a KRW pair included — and the answer also names venue, quote and pair; without quote, the exchange's USDT pair is used, else its USD pair, else its USDC pair, else the first other quote the exchange lists (alphabetically; Upbit BTC answers its KRW pair). A coin the exchange lists no pair for, or none in the quote asked, answers 404.