Note 11 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements at
			September 30, 2024
			Quoted		Significant
			Prices		Other		Significant
			in Active		Observable		Unobservable
			Markets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Haywood derivative	$	428,850	$	—	$	428,850	$	—
Stock held by GenMat advances (see Note 3)		1,188,862		—		1,188,862		—
Total assets measured at fair value	$	1,617,712	$	—	$	1,617,712	$	—
Liabilities:
2023 Kips Bay convertible debt derivative	$	10,000	$	—	$	—	$	10,000
2024 Kips Bay convertible debt derivative		1,240,000		—		—		1,240,000
Total liabilities measured at fair value	$	1,250,000	$	—	$	—	$	1,250,000

			Fair Value Measurements at
			December 31, 2023
			Quoted		Significant
			Prices		Other		Significant
			in Active		Observable		Unobservable
			Markets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Liabilities:
2023 Kips Bay convertible debt derivative	$	1,360,000	$	—	$	—	$	1,360,000
LINICO related derivative		2,383,162		—		2,383,162		—
Haywood derivative		875,000		—		875,000		—
GenMat derivative		781,966		—		781,966		—
Total liabilities measured at fair value	$	5,400,128	$	—	$	4,040,128	$	1,360,000

Schedule of Derivative Liabilities at Fair Value [Table Text Block]

	For the Three-Months Ended September 30, 2024
	As of June 30, 2024			(Additions) Deductions			Change in Fair Value			Payments for Decrease in Contractual Stock Consideration		As of September 30, 2024
2023 Kips Bay convertible debt derivative	$	(470,000	)	$	55,206		$	404,794		$	—	$	(10,000	)
Leviston convertible debt derivative		—			(130,000	)		130,000			—		—
2024 Kips Bay convertible debt derivative		—			(1,120,000	)		(120,000	)		—		(1,240,000	)
LINICO related derivative		(3,252,429	)		3,243,853			8,576			—		—
Haywood derivative		(678,150	)		—			927,000			180,000		428,850
Total derivative assets and liabilities measured at fair value	$	(4,400,579	)	$	2,049,059		$	1,350,370		$	180,000	$	(821,150	)

	For the Nine-Months Ended September 30, 2024
	As of December 31, 2023			(Additions) Deductions			Change in Fair Value			Payments for Decrease in Contractual Stock Consideration		As of September 30, 2024
2023 Kips Bay convertible debt derivative	$	(1,360,000	)	$	(110,875	)	$	1,460,875		$	—	$	(10,000	)
Leviston convertible debt derivative		—			(130,000	)		130,000			—		—
2024 Kips Bay convertible debt derivative		—			(1,120,000	)		(120,000	)		—		(1,240,000	)
LINICO related derivative		(2,383,162	)		3,243,853			(860,691	)		—		—
Haywood derivative		(875,000	)		409,850			594,000			300,000		428,850
GenMat derivative		(781,966	)		(694,970	)		(687,428	)		2,164,364		—
Total derivative assets and liabilities measured at fair value	$	(5,400,128	)	$	1,597,858		$	516,756		$	2,464,364	$	(821,150	)

	For the Three-Months Ended September 30, 2023
	As of June 30, 2023			(Additions) Deductions		Change in Fair Value			Payments for Decrease in Contractual Stock Consideration		As of September 30, 2023
Ionic convertible debt derivative	$	(600,000	)	$	523,333	$	76,667		$	—	$	—
LINICO related derivative		(3,278,162	)		—		(1,120,000	)		625,000		(3,773,162	)
Haywood derivative		(605,000	)		—		(480,000	)		—		(1,085,000	)
GenMat derivative		(3,303,172	)		—		(845,843	)		1,500,000		(2,649,015	)
Total derivative liabilities measured at fair value	$	(7,786,334	)	$	523,333	$	(2,369,176	)	$	2,125,000	$	(7,507,177	)

	For the Nine-Months Ended September 30, 2023
	As of December 31, 2022			(Additions) Deductions		Change in Fair Value			Payments for Decrease in Contractual Stock Consideration		As of September 30, 2023
Ionic convertible debt derivative	$	(420,000	)	$	1,519,587	$	(1,099,587	)	$	—	$	—
LINICO related derivative		(6,053,162	)		—		455,000			1,825,000		(3,773,162	)
Haywood derivative		(1,480,000	)		—		195,000			200,000		(1,085,000	)
GenMat derivative		(6,592,638	)		—		343,623			3,600,000		(2,649,015	)
Total derivative liabilities measured at fair value	$	(14,545,800	)	$	1,519,587	$	(105,964	)	$	5,625,000	$	(7,507,177	)

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

Date	Description	Fair Value		Beginning Stock Price		Volatility			Risk Free Rate
April 6, 2023	10 million ABTC shares (make-whole provision $6.6 million to $7.6 million)	$	7,000,000	$	0.78		94.0	%		4.80	%
April 21, 2023	Change in fair value of the 10 million ABTC shares for a change in make-whole commitment	$	2,000,000	$	0.86		95.0	%		5.00	%
May 12, 2023	1 million ABTC shares	$	365,000	$	0.74		95.0	%		5.07	%