Note 8 - Segment Reporting (Details Textual)		3 Months Ended				9 Months Ended
		Sep. 30, 2025 USD ($)		Sep. 30, 2024 USD ($)		Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)
Number of Operating Segments						2
Operating Expenses		$ 1,046,000		$ 1,151,000		$ 2,897,000	$ 3,470,000
Revenue from Contract with Customer, Including Assessed Tax		601,000		578,000		1,815,000	1,815,000
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		357,000		499,000		1,095,000	1,619,000
Cash Advisory Fees		23,000				23,000
Stock-based Advisory Fees		$ 84,000				$ 84,000
Number of Reportable Segments						2
Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Staked Bittensor (TAO) [Member]
Concentration Risk, Percentage		16.00%				5.00%
Digital Assets [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 97,000				$ 99,000
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		8,000				$ 9,000
Billed in Foreign Currency [Member] | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage						1.00%
Operating Segments [Member]
Revenue from Contract with Customer, Including Assessed Tax		504,000		578,000		$ 1,716,000	1,815,000
Operating Segments [Member] | Managed Services [Member]
Operating Expenses	[1],[3]	0	[2]	0	[2]	0	0
Revenue from Contract with Customer, Including Assessed Tax		490,000		510,000		1,495,000	1,540,000
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		$ 345,000		$ 295,000		$ 1,076,000	$ 995,000

[1] There were no operating expenses related to our Managed Service segment during the three and nine months ended September 30, 2025, or 2024.

[2] There were no operating expenses related to our Managed Service segment during the three months ended June 30, 2025, or 2024.

[3] There were no operating expenses related to our Managed Service segment during the three months ended September 30, 2025, or 2024.