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Stockholders' Equity (Details) - USD ($)
3 Months Ended 9 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Apr. 30, 2021
Apr. 30, 2020
Equity [Abstract]        
Balance at beginning     $ 10,079,449  
Increase in common stock payable     (1,472,826)  
Change in fair value of common stock payable $ (68,158) $ 96,183 $ (102,382) $ (18,871)
Balance at end $ 8,504,241   $ 8,504,241