000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Condensed Consolidated Statements of Net Loss (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Condensed Consolidated Statement of Stockholders' Equity (Deficit) (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 006 - Disclosure - Note 1 - Company Information link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 2 - Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 3 - Discontinued Operations link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 4 - Contracts With Customers link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 5 - Digital Assets link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 6 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 7 - Property and Equipment, Net link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 8 - Contingencies link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 9 - Leases link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 10 - Note Payable link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 11 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 12 - Stock-Based Compensation link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 13 - Net Loss Per Share link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 14 - Segment Information link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 15 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 995445 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995446 - Disclosure - Note 3 - Discontinued Operations (Tables) link:calculationLink link:definitionLink link:presentationLink 995447 - Disclosure - Note 5 - Digital Assets (Tables) link:calculationLink link:definitionLink link:presentationLink 995448 - Disclosure - Note 6 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 995449 - Disclosure - Note 7 - Property and Equipment, Net (Tables) link:calculationLink link:definitionLink link:presentationLink 995450 - Disclosure - Note 9 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995451 - Disclosure - Note 11 - Stockholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995452 - Disclosure - Note 12 - Stock-Based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 995453 - Disclosure - Note 13 - Net Loss Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995454 - Disclosure - Note 14 - Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995455 - Disclosure - Note 1 - Company Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995456 - Disclosure - Note 3 - Discontinued Operations (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995457 - Disclosure - Note 3 - Discontinued Operations - Schedule of Disposal Groups by Balance Sheet Classification (Details) link:calculationLink link:definitionLink link:presentationLink 995458 - Disclosure - Note 3 - Discontinued Operations - Schedule of Disposal Groups Including Discontinued Operations (Details) link:calculationLink link:definitionLink link:presentationLink 995459 - Disclosure - Note 4 - Contracts With Customers (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995460 - Disclosure - Note 5 - Digital Assets (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995461 - Disclosure - Note 5 - Crypto Asset Holdings - Crypto Asset, Holding (Details) link:calculationLink link:definitionLink link:presentationLink 995462 - Disclosure - Note 5 - Digital Assets - Reconciliation of Digital Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995463 - Disclosure - Note 6 - Fair Value Measurements (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995464 - Disclosure - Note 6 - Fair Value Measurements - Fair Value of Assets and Liabilities on a Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 995465 - Disclosure - Note 7 - Property and Equipment, Net (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995466 - Disclosure - Note 7 - Property and Equipment, Net - Schedule of Property, Plant and Equipment (Details) link:calculationLink link:definitionLink link:presentationLink 995467 - Disclosure - Note 9 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995468 - Disclosure - Note 9 - Leases - Lease Information (Details) link:calculationLink link:definitionLink link:presentationLink 995469 - Disclosure - Note 9 - Leases - Rent Obligation (Details) link:calculationLink link:definitionLink link:presentationLink 995470 - Disclosure - Note 10 - Note Payable (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995471 - Disclosure - Note 11 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995472 - Disclosure - Note 11 - Stockholders' Equity - Schedule of Warrants (Details) link:calculationLink link:definitionLink link:presentationLink 995473 - Disclosure - Note 11 - Stockholders' Equity - Warrant Valuation Assumption (Details) link:calculationLink link:definitionLink link:presentationLink 995474 - Disclosure - Note 12 - Stock-Based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995475 - Disclosure - Note 12 - Stock-Based Compensation - Schedule of Nonvested Restricted Stock Units Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995476 - Disclosure - Note 12 - Stock-Based Compensation - Schedule of Share-based Compensation (Details) link:calculationLink link:definitionLink link:presentationLink 995477 - Disclosure - Note 13 - Net Loss Per Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995478 - Disclosure - Note 13 - Net Loss Per Share - Schedule of Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995479 - Disclosure - Note 13 - Net Loss Per Share - Schedule of Antidilutive Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995480 - Disclosure - Note 14 - Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995481 - Disclosure - Note 14 - Segment Information - Segments (Details) link:calculationLink link:definitionLink link:presentationLink 995482 - Disclosure - Note 15 - Subsequent Events (Details Textual) link:calculationLink link:definitionLink link:presentationLink