Summary of significant accounting policies (Details 1) - USD ($)	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Product Information [Line Items]
Total	$ 14,822,799	$ 7,015,512
Revenue from intelligent computing power service [Member]
Product Information [Line Items]
Total	14,664,937	6,546,249
Revenue from comprehensive data center services [Member]
Product Information [Line Items]
Total	$ 157,862	$ 469,263

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details