Long-Term Investment and Fair Value Measurement (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2025

Dec. 31, 2024

Long-Term Investment and Fair Value Measurement [Abstract]

Schedule of Unrealized Gains and Losses

The following is a summary of annual upward or downwards adjustments and impairment recorded in other income (expenses), net, and included as adjustments to the carrying value of non-marketable investments held as of December 31, 2024, 2023 and 2022 based on the observable price in an orderly transaction for the same or similar security of the same issuers:

		Year ended December 31, 2024				Year ended December 31, 2023			Year ended December 31, 2022
Upward adjustments		$	—			$	6,431,088		$	6,108,872
Downward adjustments			—				—			—
Impairment			(1,000,000	)			—			(520,821	)
Total unrealized (loss) gain from fair value change of non-marketable investments, net		$	(1,000,000	)		$	6,431,088		$	5,588,051

Schedule of Carrying Value of the Non-Marketable Investments

The following table summarizes the total carrying value of the non-marketable investments held as of June 30, 2025 and December 31, 2024 including cumulative unrealized upward and downward adjustments and impairment made to the initial cost basis of the investments:

		June 30, 2025				December 31, 2024
		(Unaudited)
Initial cost basis		$	4,079,707			$	4,079,707
Upward adjustments			12,539,960				12,539,960
Downward adjustments and impairment			(1,520,821	)			(1,520,821	)
Total carrying value at the end of the period		$	15,098,846			$	15,098,846

The following table summarizes the total carrying value of the non-marketable investments held as of December 31, 2024 and 2023 including cumulative unrealized upward and downward adjustments and impairment made to the initial cost basis of the investments:

		December 31, 2024				December 31, 2023
Initial cost basis		$	4,079,707			$	4,079,707
Upward adjustments			12,539,960				12,539,960
Downward adjustments			—				—
Impairment			(1,520,821	)			(520,821	)
Total carrying value at the end of the year		$	15,098,846			$	16,098,846

Schedule of Fair Value Reconciliation of Level 3 Assets

The following is a reconciliation of Level 3 assets measured and recorded at fair value on a recurring basis during the years ended December 31, 2023.

		Common Stock
Balance at January 1, 2023		$	77,200
Impairment			(77,200	)
Balance at December 31, 2023		$	—

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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