Note 3 - Digital Assets - Summary of Crypto Asset Activities (Details) - Bittensor (TAO) Staking Rewards [Member] |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
|
|
| Tokens purchased, tokens | 348.44 | 0 | 543.96 |
| Crypto purchases, fair value | $ 86,000 | $ 0 | $ 186,000 |