Get Market Chart

Get historical price, market cap, and volume data for a cryptocurrency as time series. Returns [timestamp, value] pairs from oldest to newest. Granularity: 5-min (1d), hourly (2-90d), daily (90d+). Set interval='daily' to force daily data. Range: 1 day to 'max'. Ideal for: price charts, trend analysis, return calculations, backtesting strategies.