v3.25.2
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Cash flows from operating activities:              
Net loss $ (605,000) $ (672,000) $ (983,000) $ (1,136,000) $ (1,277,000) $ (2,119,000)  
Adjustments to reconcile net loss to net cash used in operating activities:              
Bad debt recovery         (18,000) 0  
Non-cash lease expense from right-of-use asset         0 17,000  
Stock-based compensation         0 62,000  
Non-cash revenue from digital assets         (2,000) 0  
Unrealized gain on digital assets (31,000)   0   (31,000) 0  
Changes in operating assets and liabilities:              
Accounts receivable         190,000 393,000  
Inventory         0 151,000  
Prepaid expenses and other current assets         (114,000) (74,000)  
Other assets         1,000 1,000  
Accounts payable         17,000 (100,000)  
Accrued expenses and other current liabilities         522,000 151,000  
Deferred revenue         (5,000) (75,000)  
Lease liabilities         0 (17,000)  
Net cash used in operating activities         (717,000) (1,610,000)  
Cash flows from investing activities:              
Purchases of digital assets         (1,650,000) 0  
Net cash used in investing activities         (1,650,000) 0  
Cash flows from financing activities:              
Proceeds from private placement, net of issuance costs         6,925,000 0  
Net cash provided by financing activities         8,197,000 1,478,000  
Increase (decrease) in cash         5,830,000 (132,000)  
Cash and cash equivalents at beginning of period   $ 4,965,000   $ 5,990,000 4,965,000 5,990,000 $ 5,990,000
Cash and cash equivalents at end of period 10,795,000   5,858,000   10,795,000 5,858,000 4,965,000
Reconciliation of cash and cash equivalents              
Cash 10,295,000   5,358,000   10,295,000 5,358,000  
Current certificates of deposit 500,000   500,000   500,000 500,000 500,000
Total cash and cash equivalents $ 10,795,000   $ 5,858,000   10,795,000 5,858,000 $ 4,965,000
Cash paid during the period for interest         1,000 5,000  
Non-cash investing and financing activities:              
Common warrant issuance         335,000 0  
Series F Preferred Stock conversion         19,000 194,000  
Dividends, Preferred Stock         25,000 64,000  
Common Stock Warrants [Member]              
Cash flows from financing activities:              
Proceeds from exercise of common stock warrants, net of costs         1,272,000 0  
Preferred Warrants [Member]              
Cash flows from financing activities:              
Proceeds from exercise of common stock warrants, net of costs         $ 0 $ 1,478,000