4. Derivative Liability (Details)	6 Months Ended	12 Months Ended
Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Dividend yield	0.00%
Minimum [Member]
Volatility	171.00%	108.00%	102.00%
Risk-free interest rate	0.54%	0.20%	0.50%
Expected life (years)	1 month 24 days
Maximum [Member]
Volatility	199.00%	254.00%	112.00%
Risk-free interest rate	1.31%	2.50%	1.20%
Expected life (years)	1 year 8 months 2 days	10 years	3 years

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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Risk-free interest rate assumption used in valuing an instrument.

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