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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023
Net Investment Income [Line Items]
Bitcoin's Value	$ 413,033	$ 357,981	$ 56,241
Derivative investment asset	1,692		2,697
Amount
Net Investment Income [Line Items]
Bitcoin's Value	413,033
Derivative investment asset	1,692		2,697
Investment in debt security	812		726
Total	415,537		3,423
Level 1
Net Investment Income [Line Items]
Bitcoin's Value	413,033
Derivative investment asset	0		0
Investment in debt security	0		0
Total	413,033		0
Level 2
Net Investment Income [Line Items]
Bitcoin's Value	0
Derivative investment asset	0		0
Investment in debt security	0		0
Total	0		0
Level 3
Net Investment Income [Line Items]
Bitcoin's Value	0
Derivative investment asset	1,692		2,697
Investment in debt security	812		726
Total	$ 2,504		$ 3,423

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