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Warrants (Tables)
9 Months Ended
Apr. 30, 2021
Warrants Abstract  
Schedule of additional warrants

The following is a table of outstanding warrants issued in connection with the PIPE deal during the nine months ended April 30, 2021:

 

    Initial Exercise Price   Initial Warrants Issued   Additional Warrants Issued   Reset Exercise Price   Outstanding Warrants as of April 30, 2021
Series A Warrants   $ 0.392       5,102,040       5,112,463     $ 0.196       10,214,503  
Series B Warrants   $ 0.392       15,306,120       15,337,389     $ 0.196       30,643,509  
Series C Warrants   $ 0.539       10,204,080       9,142,973     $ 0.281       19,347,053  
Total Warrants from PIPE deal             30,612,240       29,592,825               60,205,065  
Schedule of warrant activities

A summary of the Company’s warrant activities is as follows:

 

    Number of Warrants   Weighted Average Exercise Price per Share   Weighted Average Remaining Life (Years)   Aggregate Intrinsic Value
Outstanding - July 31, 2020     567,553     $ 2.50       2.20     $ —    
Issued     71,355,955       0.21       5       —    
Exercised     (9,142,973 )     0.001       5       —    
Expired     —         —         —         —    
Outstanding – April 30, 2021     62,780,535     $ 0.24       4.68     $ 2,665,819