Market ticker identifier
"KXBTCD-26MAR31-B99999"
Predefined time range: 7d, 30d, 90d, 180d, or 1y. Ignored when interval=latest.
7d, 30d, 90d, 180d, 1y "30d"
Data interval: 1h for hourly, 1d for daily OHLC, latest for real-time price from trades
1h, 1d, latest "1d"