Nature of business and organization - Liquidity and going concern (Details) - USD ($) |
6 Months Ended | ||||
|---|---|---|---|---|---|
Apr. 16, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Jul. 13, 2025 |
Jun. 30, 2025 |
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| Nature of business and organization [Line Items] | |||||
| Net losses | $ (8,639,336) | $ (2,819,073) | |||
| Net cash used in operating activities | 2,087,601 | $ 2,925,202 | |||
| Accumulated deficit | (106,648,626) | $ (88,265,410) | |||
| Cash and cash equivalents | 484,970 | $ 55,639 | |||
| Equity Purchase Facility Agreement ("EPFA") | Class A Ordinary Shares | |||||
| Nature of business and organization [Line Items] | |||||
| Commitment amount | $ 400,000,000 | $ 400,000,000 | |||
| Subsequent Events | Convertible debt issued on April 16, 2026 | |||||
| Nature of business and organization [Line Items] | |||||
| Proceeds from Convertible Debt | $ 500,000 | ||||
| Conversion price (in dollars per share) | $ 2.76 | ||||
| Subsequent Events | Convertible debt issued on April 16, 2026 | Maximum | |||||
| Nature of business and organization [Line Items] | |||||
| Aggregate principal amount | $ 5,000,000 | ||||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Maximum value of equity that is committed to be purchased by the investors in a new issue of shares. No definition available.
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- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cash inflow (outflow) from operating activity, including, but not limited to, discontinued operation. Operating activity includes, but is not limited to, transaction, adjustment, and change in value not defined as investing or financing activity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated undistributed earnings (deficit) available for dividend distribution. Includes, but is not limited to, retained earnings not appropriated for specific business purpose. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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