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Stockholders' Equity - Warrant activity (Details) - USD ($)
 6 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Jun. 30, 2021
Proceeds from the exercise of warrants $ 59,500 $ 81,251  
Warrant      
Non-vested, Beginning balance 50,000    
Exercised (50,000)    
Non-vested, Ending balance     50,000
Exercisable     50,000
Outstanding, Beginning balance Weighted Average Exercise Price $ 1.19    
Exercised Weighted Average Exercise Price $ 1.19    
Outstanding, Ending Balance Weighted Average Exercise Price     $ 1.19
Exercisable, Weighted Average Exercise Price     $ 1.19
Proceeds from the exercise of warrants $ 59,500