I am trying to get time series data of Crypto. And I tried serveral RIC like 'LTC=DARN', 'BTC=DARN', 'ETH=DARN'. Similary, the earliest hourly and minute data it gave me was like only one week ago.

The screeenshot above is the minute data of BTC.

Therefore, I wonder if there is a method to get long-term hourly or minute data.

Eg. I want to grab more historical data of the Cryptos for further research.