Note 2 - Significant Accounting Policies - Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member]	Apr. 30, 2026 USD ($)
Fair Value, Inputs, Level 1 [Member]
Bitcoin	$ 38,220
Total	38,220
Fair Value, Inputs, Level 2 [Member]
Bitcoin	0
Total	0
Fair Value, Inputs, Level 3 [Member]
Bitcoin	0
Total	$ 0

Fair value of financial and nonfinancial obligations.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Name:	us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant