Subsequent events (Details) - USD ($)					1 Months Ended		3 Months Ended
	Dec. 03, 2025	Mar. 17, 2025	Nov. 06, 2024	Oct. 29, 2024	Dec. 31, 2025	Aug. 31, 2025	Oct. 31, 2025
Issuance of shares [Abstract]
Number of shares issued (in shares)				9,176
Crypto Strategy Convertible Debt [Member]
Side Letter with Helena I [Abstract]
Number of trading days							5 days
Helena Global Investment Opportunities I Ltd [Member]
Agreement and Plan of Merger with Southern Energy Renewables Inc [Abstract]
Share price (in dollars per share)			$ 7.5
Side Letter with Helena I [Abstract]
Number of trading days			5 days				10 days
Issuance of shares [Abstract]
Number of shares issued (in shares)		16,666				300,000
Gross proceeds						$ 756,600
Subsequent Event [Member]
Side Letter with Helena I [Abstract]
Number of trading days	5 days
Subsequent Event [Member] | Crypto Strategy Convertible Debt [Member]
Issuance of shares [Abstract]
Gross proceeds					$ 205,307
Subsequent Event [Member] | Helena Global Investment Opportunities I Ltd [Member]
Issuance of shares [Abstract]
Number of shares issued (in shares)					411,000
Gross proceeds					$ 821,229
Subsequent Event [Member] | Minimum [Member] | Helena Global Investment Opportunities I Ltd [Member]
Side Letter with Helena I [Abstract]
Net proceeds	$ 7,500,000
Subsequent Event [Member] | Southern Energy Renewables Inc. [Member] | Merger Agreement [Member]
Agreement and Plan of Merger with Southern Energy Renewables Inc [Abstract]
Percentage of common shares on fully diluted basis	70.00%
Proceeds from issuance of private placement investment	$ 2,000,000
Private placement investment (in shares)	128,370
Share price (in dollars per share)	$ 15.58