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Fair Value Measurements - Summary of Fair Value Liabilities Measured at Fair Value on Recurring Basis (Details) (10-K) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Digital currencies |  | $ 199 |
Derivative Liabilities |  | 23,231,938 | $ 3,794,153
Derivative liabilities for shortfall of shares |  | 14,915,419 |
Convertible notes inclusive of derivative liabilities |  | 3,283,034 | $ 1,781,156
Level 1 [Member] |  |  |
Digital currencies |  | 199 |
Derivative Liabilities |  |  |
Derivative liabilities for shortfall of shares |  |  |
Convertible notes inclusive of derivative liabilities |  |  |
Level 2 [Member] |  |  |
Digital currencies |  |  |
Derivative Liabilities |  |  |
Derivative liabilities for shortfall of shares |  |  |
Convertible notes inclusive of derivative liabilities |  |  |
Level 3 [Member] |  |  |
Digital currencies |  |  |
Derivative Liabilities |  | 23,231,938 |
Derivative liabilities for shortfall of shares |  | 14,915,419 |
Convertible notes inclusive of derivative liabilities |  | $ 3,283,034 |

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