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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |
Net loss | $ (8,380,060) | $ (3,797,217)
Less: Income (loss) from discontinued operations | 562,625 | (1,791,286)
Loss from continuing operations | (8,942,685) | (2,005,931)
Adjustments to reconcile net loss from continuing operations to net cash (used in) provided by operating activities of continuing operations: |  |
Depreciation of property and equipment | 349,082 | 387,452
Amortization of intangible assets | 256,332 | 1,599,721
Amortization of operating lease right-of-use assets | 178,158 |
Reconciliation of shares issued in stock-based compensation arrangement |  | 1
Surrender of common stock for tax withholding |  | (100,000)
Stock-based compensation | 1,385,118 | 1,592,121
Common stock issued for consulting services | 29,015 |
Bad debt expense |  | 8,552
Digital tokens received as payment for services |  | (3,368,127)
Impairment loss on goodwill | 6,760,222 |
Impairment loss on digital tokens | 625,368 | 2,535,235
Realized gain from the sale of digital tokens | (70,995) |
Changes in operating assets and liabilities: |  |
Credit card holdback receivable | 83,175 | 46,291
Accounts receivable | 196,100 | 143,810
Operating lease liability | (101,647) |
Prepaid expense and other current assets | 113,550 | (60,425)
Other assets | 29,891 | 32,770
Accounts payable, accrued expenses and other current liabilities | (2,138,302) | 800,993
Deferred subscription revenue | 360,922 | (467,845)
Deferred technology service revenue | (3,379,435) | 3,379,435
Net cash (used in) provided by continuing operating activities | (4,266,131) | 4,524,053
Net cash used in discontinued operating activities | (199,232) | (1,791,286)
Net cash (used in) provided by operating activities | (4,465,363) | 2,732,767
Cash flows from investing activities: |  |
Purchases of property and equipment | (391,230) | (342,651)
Proceeds from the sale of digital tokens | 130,290 |
Net cash used in continuing investing activities | (260,940) | (342,651)
Net cash provided by discontinued investing activities | 1,600,000 |
Net cash provided by (used in) investing activities | 1,339,060 | (342,651)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock for stock option exercises |  | 28,210
Purchase of treasury stock | (2,015) |
Net cash provided by (used in) continuing financing activities | (2,015) | 28,210
Net cash provided by discontinued financing activities |  |
Net cash provided by (used in) financing activities | (2,015) | 28,210
Net increase (decrease) in cash and cash equivalents | (3,128,318) | 2,418,326
Balance of cash and cash equivalents at beginning of period | 6,555,376 | 4,137,050
Balance of cash and cash equivalents at end of period | 3,427,058 | 6,555,376
Non-cash investing and financing activities: |  |
Operating lease right-of-use asset and liability | $ 630,776 | $ 232,423

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