report_date 2026-01-19 spot_inst_ids BTC-USDT,ETH-USDT,SOL-USDT swap_inst_ids BTC-USDT-SWAP,ETH-USDT-SWAP,SOL-USDT-SWAP lookback_days 30 flow_window_minutes 30 depth_bps 50 oi_change_days 7 funding_avg_days 7