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4. BITCOIN - Company's Bitcoin Holdings (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Sep. 30, 2024
Common Domain Members [Abstract]    
Number Of Bitcoins Held $ 10,075 $ 6,819
Cost basis - per bitcoin 94,058 55,408
Fair value - per bitcoin 107,173 63,301
Cost basis of bitcoin (in '000s) 947,625 377,839
Fair value of bitcoin (in '000s) $ 1,079,754 $ 431,661