{"pair":"btc/usd","exchanges":5,"summary":[{"exchange":"okx","spread_bps":0.0165,"tob_imbalance":-0.3544,"depth_imbalance":-0.3564},{"exchange":"binance","spread_bps":0.0165,"tob_imbalance":-0.6139,"depth_imbalance":-0.6166},{"exchange":"bybit","spread_bps":0.0165,"tob_imbalance":-0.2365,"depth_imbalance":-0.2288},{"exchange":"deribit","spread_bps":0.0824,"tob_imbalance":0.2949,"depth_imbalance":0.2044},{"exchange":"hyperliquid","spread_bps":0.1646,"tob_imbalance":0.6732,"depth_imbalance":0.5403}],"preview":true,"signed":false,"note":"Preview — spread and imbalance only, unsigned Data cached — may be up to 60 minutes old.","preview_cached":true,"cache_max_age_minutes":60}