Ticker Data

• OKX perpetual swaps: From the 2026-09 data-integrity release, base_asset_volume is the 24h volume in the base coin (volCcy24h) for linear (BTC-USDT-SWAP) and inverse (BTC-USD-SWAP) swaps. quote_asset_volume is that volume multiplied by the last price. This product gives each earlier fill the value of the current price. Thus, from the 2026-10 data-quality release, quote_asset_volume is empty for swaps, because OKX does not publish swap quote turnover. Before the 2026-09 release, base_asset_volume contained the volume in contracts, and quote_asset_volume contained the base-coin volume. We plan a correction of the published history (base coin volume, empty quote volume). OKX spot volumes are not affected.
• Bybit: From the 2026-09 data-integrity release, price_change_percent is in percent. Before this release, Bybit published a fraction (-0.0207 means -2.07 %).
• Bybit Futures: Before the 2026-09 data-integrity release, ticker, mark price and open interest rows were change-only deltas. A field that did not change in a message is null. An open interest file exists only for hours in which open interest changed. Forward-fill the values for each symbol, and look back into earlier hours if necessary. From the release, each row contains the full carried-forward state. After a collector loses its state, the first hour contains only the fields that the collector received during that hour.
• Binance Futures: Before the 2026-09 data-integrity release, COIN-M contracts (for example, BTCUSD_PERP, BTCUSD_260925) and delisted USDⓈ-M symbols also appeared under binance_futures in ticker, mark price and liquidation files. For COIN-M, the volumes and quantities in these files are in contracts. From the release, we do not publish these symbols there. If you need only listed USDⓈ-M markets, filter them out of older history.

For missing hours, partial periods and pending corrections to published history, refer to Known Gaps & Corrections.