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Digital Currencies (Narrative) (Details) - USD ($)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Disclosure of Digital Currencies [Abstract]      
Digital currencies, fair value $ 57,499,720 $ 3,455,756 $ 4,158,501
Proceeds from sale of digital currencies 46,435,625 34,369,504  
Digital currency sold (38,437,132) (32,996,432)  
Gain on sale of digital currencies $ 7,998,493 $ 1,373,072