Looking for dates alpaca added each crypto

Hi all,

Alpaca has supported crypto for awhile but continuously added assets over time. If I build a backtest from 2018 using all the assets currently available, the results won’t be true to reality since alpaca didn’t allow trading of all those assets back then.

Therefore, I need to know the date that alpaca supported trading of each crypto asset. Does anyone have that or know how I can get it?