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Significant accounting policies, Revenue and Other Income Recognition, Property, Plant and Equipment and Trade and Other Payables (Details) - USD ($)
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Revenue and other income recognition [Abstract]    
Bitcoin on hand $ 0 $ 0
Maximum [Member]    
Trade and other payables [Abstract]    
Period of unsecured amount paid 30 days  
Buildings [member]    
Property, plant and equipment [Abstract]    
Expected useful lives 20 years  
Plant and Equipment [Member] | Minimum [Member]    
Property, plant and equipment [Abstract]    
Expected useful lives 3 years  
Plant and Equipment [Member] | Maximum [Member]    
Property, plant and equipment [Abstract]    
Expected useful lives 7 years  
Mining Hardware [Member]    
Property, plant and equipment [Abstract]    
Expected useful lives 4 years