Riot Blockchain (RIOT) 10-Q 8 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 08, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	Riot Blockchain, Inc.
Entity Central Index Key	0001167419
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2019
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		23,555,930
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 16,110,630	$ 225,390
Prepaid expenses and other current assets	331,642	1,378,534
Digital currencies	1,923,813	706,625
Total current assets	18,366,085	2,310,549
Property and equipment, net	27,977	26,269
Right of use assets	957,332
Intangible rights acquired	700,167	700,167
Long-term investments	9,502,900	9,412,726
Security deposits	703,275	703,275
Other long-term assets, net:
Patents, net	490,094	507,342
Convertible note and accrued interest	219,578	200,000
Total assets	30,967,408	13,860,328
Current liabilities
Accounts payable	817,454	3,829,315
Accrued expenses	1,982,790	1,516,252
Deferred purchase price - BMSS		1,200,000
Operating lease liability, current	889,232
Deferred revenue, current portion	96,698	96,698
Current liabilities of discontinued operations	16,340	16,340
Total current liabilities	3,802,514	6,658,605
Notes payable		1,696,083
Operating lease liability, less current portion	61,055
Deferred revenue, less current portion	823,570	871,919
Deferred income tax liability	142,709	142,709
Total liabilities	4,829,848	9,369,316
Commitments and contingencies - Note 13
Stockholders' equity
Common stock, no par value; 170,000,000 shares authorized; 22,625,111 and 14,519,058 shares issued and outstanding as of June 30, 2019 and December 31, 2018, respectively	238,082,374	202,917,443
Accumulated deficit	(212,006,522)	(197,199,197)
Total Riot Blockchain stockholders' equity	26,102,408	5,787,305
Non-controlling interest	35,152	(1,296,293)
Total stockholders' equity	26,137,560	4,491,012
Total liabilities and stockholders' equity	30,967,408	13,860,328
2% Convertible Preferred Stock Series A [Member]
Stockholders' equity
Preferred stock, no par value
0% Convertible Preferred Stock Series B [Member]
Stockholders' equity
Preferred stock, no par value	$ 26,556	$ 69,059

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Preferred stock, par value
Preferred stock, shares authorized	15,000,000	15,000,000
Common stock, par value
Common stock, shares authorized	170,000,000	170,000,000
Common stock, shares issued	22,625,111	14,519,058
Common stock, shares outstanding	22,625,111	14,519,058
2% Convertible Preferred Stock Series A [Member]
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
0% Convertible Preferred Stock Series B [Member]
Preferred stock, shares authorized	1,750,001	1,750,001
Preferred stock, shares issued	4,999	13,000
Preferred stock, shares outstanding	4,999	13,000

Condensed Interim Consolidated

Condensed Interim Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue:
Total Revenue	$ 2,467,050	$ 2,792,794	$ 3,897,310	$ 3,718,348
Costs and expenses:
Cost of revenues (exclusive of depreciation and amortization shown below)	1,587,983	1,477,587	3,059,321	1,826,598
Selling, general and administrative	2,225,499	6,432,883	5,377,637	10,343,612
Depreciation and amortization	23,229	2,870,899	47,068	5,027,326
Impairment of property and equipment		15,377,532		26,858,023
Impairment of digital currencies		511,170		2,979,045
Total costs and expenses	3,836,711	26,670,071	8,484,026	47,034,604
Operating loss from continuing operations	(1,369,661)	(23,877,277)	(4,586,716)	(43,316,256)
Other income (expense):
Loss on issuance of convertible notes, common stock and warrants			(6,154,660)
Change in fair value of warrant liability	(116,498)		(2,869,726)
Change in fair value of convertible notes	(2,250,651)		(3,895,233)
Gain on deconsolidation of Tess	1,138,787		1,138,787
Non-compliance penalty for SEC registration requirement				(333,338)
Interest expense	(48,819)	(15,093)	(117,182)	(16,162)
Other income	729,154		808,026
Investment income	3,261	6,690	20,103	69,276
Realized gain on sale of digital currencies	636,822		641,610
Other expense	(696)	(1,020,158)	(13,737)	(1,023,840)
Total other income (expense)	91,360	(1,028,561)	(10,442,012)	(1,304,064)
Loss from continuing operations before income taxes	(1,278,301)	(24,905,838)	(15,028,728)	(44,620,320)
Deferred income tax benefit		472,000		3,525,000
Loss from continuing operations	(1,278,301)	(24,433,838)	(15,028,728)	(41,095,320)
Discontinued operations
Income from operations				96,132
Income from discontinued operations				96,132
Net loss	(1,278,301)	(24,433,838)	(15,028,728)	(40,999,188)
Net (income) loss attributable to non-controlling interest	(19)	416,918	221,403	632,176
Net loss attributable to Riot Blockchain	$ (1,278,320)	$ (24,016,920)	$ (14,807,325)	$ (40,367,012)
Basic and diluted net loss per share:
Continuing operations attributable to Riot Blockchain	$ (0.08)	$ (1.81)	$ (0.97)	$ (3.19)
Discontinued operations attributable to Riot Blockchain				0.01
Net loss per share	$ (0.08)	$ (1.81)	$ (0.97)	$ (3.18)
Basic and diluted weighted average number of shares outstanding	15,995,092	13,511,427	15,226,629	12,897,147
Revenue - digital currency mining [Member]
Revenue:
Total Revenue	$ 2,442,876	$ 2,768,619	$ 3,848,961	$ 3,669,999
License fees [Member]
Revenue:
Total Revenue	$ 24,174	$ 24,175	$ 48,349	$ 48,349

Condensed Interim Consolidate_2

Condensed Interim Consolidated Statement of Stockholders' Equity (Deficit) (Unaudited) - USD ($)	Preferred Stock	Common Stock [Member]	Accumulated Deficit	Total riot blockchain stockholder's equity [Member]	Noncontrolling Interest [Member]	Total
BALANCE at Dec. 31, 2017	$ 7,745,266	$ 180,387,518	$ (139,263,480)	$ 48,869,304	$ 758,095	$ 49,627,399
BALANCE, shares at Dec. 31, 2017	1,458,001	11,622,112
Delivery of common stock underlying restricted stock units
Delivery of common stock underlying restricted stock units, shares		124,583
Common stock issued for asset purchase - Prive		$ 8,480,000		8,480,000		8,480,000
Common stock issued for asset purchase - Prive, shares		800,000
Common stock escrow shares issued for asset purchase - Prive
Common stock escrow shares issued for asset purchase - Prive, shares		200,000
Preferred stock converted to Common stock	$ (4,010,754)	$ 4,010,755		1		1
Preferred stock converted to Common stock, shares	(755,001)	755,001
Exercise of warrants		$ 350,000		350,000		350,000
Exercise of warrants, shares		100,000
Stock-based compensation		$ 2,492,029		2,492,029		2,492,029
Stock-based compensation, shares
Exercise of stock options		$ 78,522		78,522		78,522
Exercise of stock options, shares		19,533
Common stock issued for services		$ 277,940		277,940		277,940
Common stock issued for services, shares		20,754
Sale of Riot shares held by Tess Pay, Inc.		$ 320,000		320,000		320,000
Sale of Riot shares held by Tess Pay, Inc., shares
Cashless exercise of stock purchase warrants
Cashless exercise of stock purchase warrants, shares		3,215
Non-controlling interest - Logical Brokerage					40,541	40,541
Net income (loss) attributable to non-controlling interest					(632,176)	(632,176)
Net loss			(40,367,012)	(40,367,012)		(40,367,012)
BALANCE at Jun. 30, 2018	$ 3,734,512	$ 196,396,764	(179,630,492)	20,500,784	166,460	20,667,244
BALANCE, shares at Jun. 30, 2018	703,000	13,645,198
BALANCE at Mar. 31, 2018	$ 4,929,768	$ 193,335,481	(155,613,572)	42,651,677	583,378	43,235,055
BALANCE, shares at Mar. 31, 2018	928,000	13,327,615
Delivery of common stock underlying restricted stock units
Delivery of common stock underlying restricted stock units, shares		74,583
Preferred stock converted to Common stock	$ (1,195,256)	$ 1,195,256
Preferred stock converted to Common stock, shares	(225,000)	225,000
Stock-based compensation		$ 1,608,086		1,608,086		1,608,086
Stock-based compensation, shares
Common stock issued for services		$ 257,941		257,941		257,941
Common stock issued for services, shares		18,000
Net income (loss) attributable to non-controlling interest					(416,918)	(416,918)
Net loss			(24,016,920)	(24,016,920)		(24,016,920)
BALANCE at Jun. 30, 2018	$ 3,734,512	$ 196,396,764	(179,630,492)	20,500,784	166,460	20,667,244
BALANCE, shares at Jun. 30, 2018	703,000	13,645,198
BALANCE at Dec. 31, 2018	$ 69,059	$ 202,917,443	(197,199,197)	5,787,305	(1,296,293)	4,491,012
BALANCE, shares at Dec. 31, 2018	13,000	14,519,058
Delivery of common stock underlying restricted stock units
Delivery of common stock underlying restricted stock units, shares		106,251
Common stock issued with convertible notes		$ 255,000		255,000		255,000
Common stock issued with convertible notes, shares		150,000
Common stock issued in connection with conversion of notes payable		$ 10,225,959		10,225,959		10,225,959
Common stock issued in connection with conversion of notes payable, shares		1,813,500
Reclassification of warrant liability to equity		$ 5,438,660		5,438,660		5,438,660
Preferred stock converted to Common stock	$ (42,503)	$ 42,503
Preferred stock converted to Common stock, shares	(8,001)	8,001
Stock-based compensation		$ 350,068		350,068		350,068
Stock-based compensation, shares
Issuance of common stock, net of offering costs/At-the-market offering		$ 18,852,741		18,852,741		18,852,741
Issuance of common stock, net of offering costs/At-the-market offering, shares		6,028,301
Net income (loss) attributable to non-controlling interest					(221,403)	(221,403)
Deconsolidation of Tess					1,552,848	1,552,848
Net loss			(14,807,325)	(14,807,325)		(14,807,325)
BALANCE at Jun. 30, 2019	$ 26,556	$ 238,082,374	(212,006,522)	26,102,408	35,152	26,137,560
BALANCE, shares at Jun. 30, 2019	4,999	22,625,111
BALANCE at Mar. 31, 2019	$ 69,059	$ 203,407,485	(210,728,202)	(7,251,658)	(1,517,715)	(8,769,373)
BALANCE, shares at Mar. 31, 2019	13,000	14,762,809
Delivery of common stock underlying restricted stock units
Delivery of common stock underlying restricted stock units, shares		12,500
Common stock issued in connection with conversion of notes payable		$ 10,225,959		10,225,959		$ 10,225,959
Common stock issued in connection with conversion of notes payable, shares		1,813,500				1,813,500
Reclassification of warrant liability to equity		$ 5,438,660		5,438,660		$ 5,438,660
Preferred stock converted to Common stock	$ (42,503)	$ 42,503
Preferred stock converted to Common stock, shares	(8,001)	8,001
Stock-based compensation		$ 115,026		115,026		115,026
Stock-based compensation, shares
Issuance of common stock, net of offering costs/At-the-market offering		$ 18,852,741		18,852,741		18,852,741
Issuance of common stock, net of offering costs/At-the-market offering, shares		6,028,301
Net income (loss) attributable to non-controlling interest					19	19
Deconsolidation of Tess					1,552,848	1,552,848
Net loss			(1,278,320)	(1,278,320)		(1,278,320)
BALANCE at Jun. 30, 2019	$ 26,556	$ 238,082,374	$ (212,006,522)	$ 26,102,408	$ 35,152	$ 26,137,560
BALANCE, shares at Jun. 30, 2019	4,999	22,625,111

Condensed Interim Consolidate_3

Condensed Interim Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net loss	$ (15,028,728)	$ (40,999,188)
Income from discontinued operations		96,132
Loss from continuing operations	(15,028,728)	(41,095,320)
Adjustments to reconcile net loss from continuing operations to net cash used in operating activities of continuing operations:
Stock-based compensation	350,068	2,492,029
Depreciation and amortization	47,068	5,027,326
Deferred income tax benefit		(3,525,000)
Amortization of license fee revenue	(48,349)	(48,349)
Amortization of right of use assets	1,148,481
Common stock issued for services		277,940
Loss on issuance of convertible notes, common stock and warrants	6,154,660
Change in fair value of convertible notes	3,895,233
Change in fair value of warrant liability	2,869,726
Gain on deconsolidation of Tess	(1,138,787)
Gain on extiguishment of accounts payable, other liabilities and accrued interest	(808,026)
Impairment of property and equipment		26,858,023
Impairment of digital currencies		2,979,045
Realized gain on sale of digital currencies	(641,610)
Changes in assets and liabilities:
Prepaid contracts		(2,584,699)
Prepaid expenses and other current assets	916,460	221,142
Digital currencies - mining, net of mining pool operating fees	(3,771,888)	(3,669,999)
Accrued interest	(19,578)
Accounts payable	(1,831,697)	2,303,611
Accrued expenses	880,210	1,253,072
Lease liability	(1,155,526)
Net cash used in operating activities of continuing operations	(8,182,283)	(9,511,179)
Net cash used in operating activities of discontinued operations		(68,824)
Net cash used in operating activities	(8,182,283)	(9,580,003)
Cash flows from investing activities - continuing operations:
Proceeds from sale of digital currencies	3,196,310	1,626,800
Purchase of digital currencies		(5,625,000)
Purchases of property and equipment	(5,569)	(20,084,225)
Purchases of other investments		(6,412,726)
Security deposits		(703,275)
Purchases of patent costs	(25,959)	(31,068)
Investment in Logical Brokerage, net of cash acquired		(516,918)
Purchase of developed technology by Tess		(60,019)
Net cash provided by (used in) investing activities	3,164,782	(31,806,431)
Cash flows from financing activities - continuing operations:
Proceeds from issuance of convertible notes	3,000,000	775,555
Repayment of notes payable and other obligations	(950,000)	(135,574)
Proceeds from the issuance of common stock / At-the-market offering	19,671,712
Offering costs for the issuance of common stock / At-the-market offering	(818,971)
Proceeds from exercise of warrants		350,000
Proceeds from exercise of stock options		78,522
Proceeds from sale of Riot shares held by Tess Pay, Inc.		320,000
Net cash provided by financing activities of continuing operations	20,902,741	1,388,503
Net increase (decrease) in cash and cash equivalents	15,885,240	(39,997,931)
Cash and cash equivalents at beginning of period	225,390	41,651,965
Cash and cash equivalents at end of period	16,110,630	1,654,034
Supplemental disclosure of cash flow information:
Cash paid for interest		1,526
Cash paid for taxes
Supplemental disclosure of noncash investing and financing activities:
Conversion of notes payable to common stock	10,225,959
Reclassification of warrant liability to equity	5,438,660
Value of shares issued for Prive asset acquisition		$ 8,480,000
Conversion of Preferred stock to Common stock	42,503	4,010,755
Deferred purchase price for BMSS		$ 1,500,000

Organization

Organization	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Note 1. Organization: Nature of operations: Riot Blockchain, Inc. (“we,” “us,” “our,” the “Company,” “Riot” or “Riot Blockchain”) was originally organized on July 24, 2000, as a Colorado corporation. Effective October 19, 2017, the Company's name was changed to Riot Blockchain, Inc., from Bioptix, Inc., and changed its state of incorporation to Nevada from Colorado. The Company operates a digital currency mining operation, which utilizes specialized computers (also known as “miners”) that generate digital currency (primarily bitcoin) from the blockchain. The Company acquired approximately 8,000 miners through its acquisition of Kairos Global Technology, Inc. (“Kairos”) in November 2017, and from Prive Technologies, Inc. (“Prive”), and separately from Blockchain Mining Supply & Services Ltd. (“BMSS”) in February 2018.

Liquidity and Financial Conditi

Liquidity and Financial Condition	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Liquidity and Financial Condition	Note 2. Liquidity and Financial Condition: The Company has experienced recurring losses and negative cash flows from operations. At June 30, 2019, the Company had approximate balances of cash and cash equivalents of $16.1 million, digital currencies of $1.9 million, working capital of $14.6 million, total stockholders' equity of $26.1 million and an accumulated deficit of $212.0 million. To date, the Company has, in large part, relied on equity and debt financing to fund its operations. The Company expects to continue to incur losses from operations for the near-term and these losses could be significant as the Company incurs costs and expenses associated with recent and potential future acquisitions, and development of the RiotX exchange platform, as well as public company, legal and administrative related expenses being incurred. As disclosed in Note 8, during the six months ended June 30, 2019, the Company issued a series of Senior Secured Convertible Promissory Notes (the “Notes”), to investors for an aggregate principal amount of $3,358,333 and an equal value of warrants for the purchase of shares of the Company’s common stock (the “Warrants”) in exchange for a total investment of $3,000,000. During the three months ended June 30, 2019, all of the Notes were converted into common stock and have been satisfied in full. The Company is closely monitoring its cash balances, cash needs and expense levels. As disclosed in Note 9, during the six months ended June 30, 2019, the Company entered into a Sales Agreement with H.C. Wainwright & Co., LLC (“H.C. Wainwright”) dated May 24, 2019 (the “Sales Agreement”), pursuant to which the Company may, from time to time, sell up to $100.0 million in shares of the Company’s common stock through H.C. Wainwright, acting as the Company’s sales agent and/or principal, in an at-the-market offering (“ATM Offering”). All sales of the shares in connection with the ATM Offering have been made pursuant to an effective shelf registration statement on Form S-3 filed with the U.S. Securities and Exchange Commission (“SEC”). The Company pays H.C. Wainwright a commission of approximately 3.0% of the aggregate gross proceeds the Company received from all sales of the Company's common stock under the Sales Agreement. The Company received net proceeds on sales under the Sales Agreement of approximately $18.9 million at a weighted average price of $3.26 (net of commissions) during the six months ended June 30, 2019.

Basis of presentation, summary

Basis of presentation, summary of significant accounting policies and recent accounting pronouncements	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of presentation, summary of significant accounting policies and recent accounting pronouncements	Note 3. Basis of presentation, summary of significant accounting policies and recent accounting pronouncements: Basis of presentation and principles of consolidation The accompanying unaudited condensed interim consolidated financial statements have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the SEC. In the opinion of management, the accompanying unaudited condensed interim consolidated financial statements reflect all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation of such interim results. The results for the unaudited condensed interim consolidated statement of operations are not necessarily indicative of results to be expected for the year ending December 31, 2019 or for any future interim period. The unaudited condensed interim consolidated financial statements do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying unaudited condensed interim consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2018 and notes thereto included in the Company’s Annual Report on Form 10-K filed with the SEC on April 2, 2019. Use of estimates: The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the balance sheet and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ significantly from those estimates. The most significant accounting estimates inherent in the preparation of the Company's unaudited condensed interim consolidated financial statements include estimates associated with revenue recognition, asset valuations, the useful lives and recoverability of long-lived assets, impairment analysis of intangibles and goodwill, stock-based compensation, assumptions used in estimating the fair value of convertible notes and warrants, and the valuation allowance associated with the Company’s deferred tax assets. Significant Accounting Policies: For a detailed discussion about the Company’s significant accounting policies, see 2018 Annual Report. Sequencing: On January 28, 2019, the Company adopted a sequencing policy under Accounting Standards Codification (“ASC”) 815-40-35 Derivatives and Hedging Notes Payable Fair Value Option: As described further in Note 8 - Notes and Other Obligations, During the three months ended June 30, 2019, all of the Notes were converted into 1,813,500 shares of the Company’s common stock valued at their estimated fair value at the time of conversion totaling approximately $10.2 million. Warrant Liability: The Company issued Warrants to purchase 1,908,144 shares of its common stock in connection with the Notes issued to the Investors in January 2019, and recorded these outstanding Warrants as a liability at fair value utilizing a Monte Carlo simulation model. This liability is subject to re-measurement at each balance sheet date, and any change in fair value is recognized in the Company's condensed interim consolidated statements of operations. As of June 25, 2019, the Company’s Notes had been converted in their entirety and the warrant liability was revalued and reclassified to equity, because the Warrants are no longer subject to the Company’s sequencing policy as described above. Leases: Effective January 1, 2019, the Company accounts for its leases under ASC 842, Leases In calculating the right of use asset and lease liability, the Company elects to combine lease and non-lease components as permitted under ASC 842. The Company excludes short-term leases having initial terms of 12 months or less from the new guidance as an accounting policy election, and recognizes rent expense on a straight-line basis over the lease term. The Company continues to account for leases in the prior period financial statements under ASC Topic 840. Loss per share : Basic net loss per share (“EPS”) of common stock is computed by dividing net loss by the weighted average number of shares of common stock outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. The Company excludes its unvested restricted shares and escrow shares from the net loss per share calculation. The escrow shares are excluded due to their related contingencies, the inclusion of which would result in anti-dilution. Since the Company has net losses attributable to Riot Blockchain, basic and diluted net loss per share is the same. Securities that could potentially dilute loss per share in the future were not included in the computation of diluted loss per share at June 30, 2019 and 2018 because their inclusion would be anti-dilutive are as follows: June 30, 2019 2018 Warrants to purchase common stock 3,574,257 1,671,113 Options to purchase common stock 12,000 150,000 Escrow shares 200,000 200,000 Unvested restricted stock awards 42,980 571,567 Convertible Series B preferred shares 4,999 703,000 Total 3,834,236 3,295,680 Recently issued and adopted accounting pronouncements: In February 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-02, Leases Leases In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment In August 2018, the FASB issued ASU 2018-15, “ Intangibles–Goodwill and Other–Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is A Service Contract In November 2018, the FASB issued ASU 2018-18, C ollaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606, .

Digital Currencies

Digital Currencies	6 Months Ended
	Jun. 30, 2019
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Digital Currencies	Note 4. Digital Currencies: The following table presents additional information about digital currencies: June 30, 2019 (Unaudited) Beginning balance, January 1, 2019 $ 706,625 Revenue recognized from digital currencies mined 3,848,961 Mining pool operating fees (77,073 ) Sale of digital currencies (3,196,310 ) Realized gain on sale of digital currencies 641,610 Ending balance $ 1,923,813

Fair value measurements

Fair value measurements	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair value measurements	Note 5 Fair value measurements: During the six months ended June 30, 2019 the Company issued the Notes and Warrants in connection with the Notes. The Notes and Warrants were classified as liabilities and measured at fair value on the issuance date, with changes in fair value recognized as other expense on the consolidated statements of operations and disclosed in the unaudited condensed interim consolidated financial statements. During the three months ended June 30, 2019, in accordance with their original terms, all of the Notes were converted into a total of 1,813,500 shares of the Company’s common stock by their holders. A summary of weighted average (in aggregate) significant unobservable inputs (Level 3 inputs) used in measuring the Company’s Notes and Warrants at the issuance date of January 28, 2019 and during the conversion of the Notes for the three months ended June 30, 2019, are as follows: Senior Secured Promissory Notes: January 28, 2019 Three months ended June 30, 2019 (Unaudited) (Unaudited) Dividend yield 0% 0% Expected price volatility 119.5% 122.2%-127.1% Risk free interest rate 2.60% 2.07%-2.44% Expected term 1 year - Warrants: January 28, 2019 Three months ended June 30, 2019 (Unaudited) (Unaudited) Dividend yield 0% 0% Expected price volatility 111.6% 119.9%-120.5% Risk free interest rate 2.58% 2.23%-2.58% Expected term 5 years 4 years, 10 months There were no assets or liabilities measured at fair value during the six months ended June 30, 2018. Unobservable inputs were used to determine the fair value of positions that the Company has classified within the Level 3 category. The following table presents changes in Level 3 liabilities measured at fair value for the six months ended June 30, 2019. Convertible Notes Warrant Liability Issuance of senior secured convertible notes $ 6,330,726 $ — Issuance of warrants in connection with convertible notes — 2,568,934 Balance at January 28, 2019 6,330,726 2,568,934 Change in fair value 1,644,582 2,753,228 Balance at March 31, 2019 7,975,307 5,322,162 Change in fair value 2,250,651 116,498 Conversion of convertible notes to common stock (10,225,959 ) — Recalssification of warrant liability to equity — (5,438,660 ) Balance at June 30, 2019 $ — $ —

Investment in Coinsquare

Investment in Coinsquare	6 Months Ended
	Jun. 30, 2019
Investments, All Other Investments [Abstract]
Investment in Coinsquare	Note 6. Investment in Coinsquare: In September 2017, the Company acquired a minority interest for $3.0 million in Coinsquare, which operates a digital crypto-currency exchange platform in Canada. During February 2018, the Company invested an additional $6.4 million to acquire additional common stock of Coinsquare. The investment included an additional equity investment of $2.8 million that was part of an approximate $24 million financing by Coinsquare. Additionally, warrants acquired in the original investment were exercised in exchange of a cash payment of $3.6 million. These additional investments resulted in a current ownership in Coinsquare by the Company of approximately 12% based upon Coinsquare’s issued and outstanding shares. The Company has evaluated the guidance in ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities

Investment in Tess

Investment in Tess	6 Months Ended
	Jun. 30, 2019
Investments, All Other Investments [Abstract]
Investment in Tess	Note 7. Investment in Tess: In October 2017, the Company acquired approximately 52.01% of Tess, which is developing blockchain solutions for telecommunications companies. As of June 30, 2019, the Company evaluated its remaining interest in Tess under the guidance of ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, and determined it should remeasure its retained interest at fair value upon deconsolidation to establish a new cost basis. As of April 10, 2019, the fair value of the Tess shares owned by the Company is approximately $0.1 million, calculated based upon the April 10, 2019 funding price as follows: April 10, 2019 Tess shares held by Riot Blockchain, Inc. 2,708,333 Per share fair value $ 0.03 Fair value of Tess shares held by Riot Blockchain, Inc. $ 90,174 The Company accounts for deconsolidation of subsidiaries in which it loses controlling interest in the financial interest of the subsidiary in accordance with Accounting Standards Codification (“ASC”) 810-10-40 – “Consolidation”. The deconsolidation of Tess resulted in a gain of approximately $1.1 million calculated as follows: Current assets $ 130,432 Less: Accounts payable 761,875 Accrued expenses 273,935 Convertible notes 1,696,083 Net liabilities (2,601,461 ) Non-controlling interest share 1,552,848 Sub-total (1,048,613 ) Less: fair value of shares owned by Riot Blockchain 90,174 Gain on deconsolidation of Tess $ (1,138,787 )

Notes and Other Obligations

Notes and Other Obligations	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Notes and Other Obligations	Note 8. Notes and Other Obligations: Senior Secured Convertible Promissory Notes and Warrants On January 28, 2019, in connection with a private financing (the “Private Financing”), the Company issued the Notes, to investors (collectively, the “Investors” and each an “Investor”) for an aggregate principal amount of $3,358,333, along with Warrants for the purchase of and equal value of shares of the Company’s common stock in exchange for $3,000,000 of private financing. The Notes were convertible into shares of the Company’s common stock at any time after the issuance date, provided that at no time would the Company be required to issue shares in excess of the aggregate number of shares of its commons stock outstanding. The Notes were set to mature twelve months from date of issuance and accrue interest at a rate of 8% per annum, with twelve months of interest guaranteed. The Notes were subject to prepayment penalties, default conditions and other terms and conditions, as further defined in the Financing Agreements (the “Financing Agreements”) as disclosed in the Company’s current report on Form 8-K filed with the SEC on February 1, 2019. As additional consideration for the investment, the Company issued a total of 150,000 restricted common shares to the Investors. The Notes were convertible into shares of the common stock of the Company at a price equal to the lower of $2.00 or 80% of the lowest volume-weighted adjusted price of shares of the Company’s common stock in the twenty trading days prior to the conversion date, subject to adjustments in certain cases as defined in the Financing Agreements. Provided, however, that according to the Notes, the cumulative shares of the Company’s common stock issuable upon conversion of the Notes cannot exceed 19.99% of the total number of the Company’s outstanding common stock as of January 28, 2019. Pursuant to the Financing Agreements between the Company and the Investors, the Company granted the Investors a security interest in its assets to secure repayment of the Notes. Further to the Financing Agreements, the Company also reserved a number of shares of its common stock equal to 300% of the total number of shares issuable upon full conversion of the Notes. Due to the complexity and number of embedded features within the Notes and as permitted under applicable accounting guidance, the Company elected to account for the Notes and all the embedded features under the fair value option, which records the Notes at fair value rather than at historical cost, with changes in fair value recorded in the condensed interim consolidated statements of operations. Direct costs and fees incurred to issue the Notes were recognized in earnings as incurred and were not deferred. On the initial measurement date of January 28, 2019, the fair value of the Notes was estimated at $6,330,726. Upfront costs and fees related to items for which the fair value option was elected were approximately $358,333 and were recorded as a component of other expenses for the six months ended June 30, 2019. In connection with the Notes, the Company entered into registration rights agreement with the Investors. The Company filed a registration statement with the SEC covering the equity rights and any other shares issuable in connection with the Notes on March 14, 2019 and the registration statement was declared effective on April 29, 2019. During the three months ended June 30, 2019, holders of the Notes issued on January 28, 2019, converted 100% of the Notes into 1,813,500 shares of the Company’s common stock. The aggregate fair value of the Notes converted during the three months ended June 30, 2019 was $10.2 million, an increase in fair value of $3.9 million, which is reflected on the interim condensed consolidated statements of operations for the six months ended June 30, 2019, as change in fair value of convertible note. ( See In connection with the Private Financing, the Company also issued the Warrants to the Investors to acquire up to an aggregate of 1,908,144 shares of the Company’s common stock at an exercise price of $1.94 per share. The Warrants are exercisable by the Investors beginning on July 29, 2019, through the fifth year anniversary of the effective date of the Private Financing; provided, however, each Investor’s beneficial ownership of the Company’s common stock may not exceed 4.99% of the total outstanding shares of the Company’s common stock without first providing sixty days’ notice to the Company, and, in any event, the ownership, including beneficial ownership, of shares of the Company’s common stock by each of the Investors, shall not exceed 9.99% of the total outstanding shares of our common stock. Tess Investment As of March 28, 2018, Tess, a subsidiary of the Company, entered into a note purchase agreement with a private investor under which a convertible promissory note issued by Tess in the principal amount CAD $2.2 million (the “Tess Convertible Note”) and cash proceeds of CAD $2.2 million were placed into a third-party controlled escrow account. Upon the successful achievement of conditions defined under the escrow agreement relating to closing of a transaction between Tess and Cresval Capital Corp, (“Cresval”) whereby Tess and Cresval would merge as provided in the merger agreements and Tess would become publicly traded on the TSX-V exchange, the then-remaining cash and the Tess Convertible Note would be issued to Tess and the investor, respectively. The Tess Convertible Note was convertible at $0.10 per share of the merged entity, as defined, subject to certain adjustments. On February 15, 2019, Cresval terminated its definitive agreement with Tess due to Tess’s inability to complete one of the specified closing conditions in the agreement. The interim release consisted of CAD $1.0 million (USD $775,555) of cash released to Tess and an unsecured promissory note issued by Tess (“Tess Promissory Note”) released to the investor. The Tess Promissory Note bears interest at 5%, is unsecured and due in 2021. On August 23, 2018, the final release from escrow occurred. Tess received approximately USD $921,000, bringing the total Tess Promissory Note balance to approximately USD $1,696,000. During the six months ended June 30, 2019, the Company’s ownership in Tess was reduced to 9% and as a result, Tess is no longer consolidated in the Company’s unaudited interim condensed consolidated financial statements (see Note 7). BMSS and Other Liabilities Settlements On February 21, 2018, the Company completed an asset purchase under an agreement (the "BMSS Purchase Agreement") with BMSS, to purchase the 3,000 AntMiner S9 bitcoin mining machines owned by BMSS Equipment (the "BMSS Equipment"). Pursuant to the BMSS Purchase Agreement, the Company purchased the BMSS Equipment for aggregate consideration of Eight Million Five Hundred Thousand Dollars ($8,500,000). As of June 27, 2019, in connection with the BMSS agreement, the Company owed approximately $1,340,000 of principal and interest and the Company and BMSS agreed to a one-time settlement payment totaling $950,000. The remaining $390,000 was recorded as a gain on extinguishment of notes and interest, and included in other income in the accompanying interim consolidated statement of operations for the three and six months ended June 30, 2019. During the six months ended June 30, 2019, the Company reached agreements with certain creditors to settle the amounts of outstanding liabilities at a discount. The computed value of the modifications as compared to the liability balances were recorded as other income from the gains on extinguishment of debt. The liabilities settled including BMSS, during the period totaled approximately $3,287,000 in exchange for cash payments of $2,479,000, resulting in a gain of $808,000 of which $729,000 was recognized in the three months ended June 30, 2019.

Stockholders' equity

Stockholders' equity	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Stockholders' equity	Note 9. Stockholders’ equity: Preferred Stock: During the six months ended June 30, 2019, 8,001 shares of the Company’s Series B preferred stock were converted into 8,001 shares of the Company’s common stock. At-the-Market Equity Offering: The Company entered into a Sales Agreement with H.C. Wainwright dated May 24, 2019, pursuant to which the Company may, from time to time, sell up to $100 million in shares of the Company’s common stock through H. C. Wainwright, as the Company’s sales agent and/or principal, in the ATM Offering. All sales of the shares have been made pursuant to an effective shelf registration statement on Form S-3 filed with the SEC. The Company paid H.C. Wainwright a commission of approximately 3.0% of the aggregate gross proceeds the Company received from all sales of the Company's common stock under the Sales Agreement. The Company received net proceeds on sales of 6,028,301 shares of common stock under the Sales Agreement of approximately $18.9 million at a weighted average price of $3.26 (excluding commissions) during the six months ended June 30, 2019. Restricted Stock: During the six months ended June 30, 2019, 106,251 shares of restricted common stock related to fully vested shares of restricted stock were issued under the Company’s 2017 Equity Incentive Plan. The fully vested shares were issued to two former officers who separated from the Company in February 2019 and a former director who resigned in October of 2018 totaling 93,751 shares. The remaining 12,500 fully vested shares were issued to a consultant.

Stock based compensation, optio

Stock based compensation, options and warrants	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Stock based compensation, options and warrants	Note 10. Stock based compensation, options and warrants: Stock based compensation: The Company’s stock-based compensation expenses recognized during the six months ended June 30, 2019 and 2018, were attributable to selling, general and administrative expenses, which are included in the accompanying unaudited condensed interim consolidated statements of operations. The Company recognized total stock-based compensation expense during the three and six months ended June 30, 2019 and 2018 granted under the Company’s 2017 equity incentive plan (the “Plan”), from the following categories: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Restricted stock awards under the Plan $ 115,026 $ 1,432,593 $ 291,570 $ 2,199,542 Stock option awards under the Plan — 175,493 58,498 292,487 Total stock-based compensation $ 115,026 $ 1,608,086 $ 350,068 $ 2,492,029 Restricted stock: A summary of the Company’s unvested restricted stock activity in the six months ended June 30, 2019 is presented here: Number of Shares Weighted Average Grant-Date Unvested at January 1, 2019 95,939 $ 12.49 Vested (37,459 ) $ 8.01 Granted 24,500 $ 5.11 Forfeited (40,000 ) $ 16.82 Unvested at June 30, 2019 42,980 $ 7.43 During the six months ended June 30, 2019, the Company granted 24,500 shares of restricted stock to consultants. The total fair value of restricted stock granted during the six months ended June 30, 2019 was approximately $0.1 million. The fair value of each restricted stock was based upon the closing stock price on the grant date. During the six months ended June 30, 2019, forfeitures of restricted common stock totaled 40,000, which consisted of shares forfeited due to the termination of two of the Company’s officers. The fair value of restricted stock grants is measured based on their fair value on the date of grant and amortized over the vesting period of twelve to twenty-four months. As of June 30, 2019, there was approximately $0.3 million of unrecognized compensation cost related to unvested restricted stock, which is expected to be recognized over a remaining weighted-average vesting period of approximately 5 months. Stock incentive plan options: A summary of activity under the Plan for the six months ended June 30, 2019 is presented below: Shares Underlying Options Weighted Average Exercise Price Weighted Average Remaining Contractual Aggregate Intrinsic Value Outstanding at January 1, 2019 62,000 $ 15.71 9.2 $ — Forfeited (50,000 ) $ 18.50 — — Outstanding at June 30, 2019 12,000 $ 4.09 9.2 $ — Exercisable at June 30, 2019 12,000 $ 4.09 9.2 $ — Aggregate intrinsic value represents the total intrinsic value (the difference between the Company’s closing stock price on June 30, 2019 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders, had all option holders been able to, and in fact had, exercised their options on June 30, 2019. Other common stock purchase warrants: Following is a summary of outstanding warrants that were issued outside of the Plan for the six months ended June 30, 2019: Shares Underlying Options/Warrants Weighted Average Exercise Price Weighted Average Remaining Contractual Aggregate Intrinsic Value Outstanding at January 1, 2019 1,671,113 $ 39.47 2.0 $ — Granted 1,908,144 $ 1.94 5.2 $ 2,537,832 Forfeited (5,000 ) $ 7.90 — $ — Outstanding at June 30, 2019 3,574,257 $ 19.48 3.4 $ 2,289,773 Exercisable at June 30, 2019 1,928,144 $ 19.48 0.7 $ — The Company granted Warrants to purchase 1,908,144 shares of its common stock with an exercise price of $1.94, in connection with the Notes issued on January 28, 2019. (See Note 8). The aggregate intrinsic value in the table above represents the total intrinsic value (the difference between the Company’s closing stock price on June 30, 2019 and the exercise price, multiplied by the number of in-the-money warrants) that would have been received by the warrant holders, had all warrant holders exercised their warrants on June 30, 2019.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Note 11. Discontinued Operations: During the quarter ended March 31, 2017, the Company made the decision to discontinue the operations of its wholly-owned subsidiary BDI. BDI had developed a proprietary Enhanced Surface Plasmon Resonance technology platform for the detection of molecular interactions. The decision to adopt this plan was made following an evaluation by the Company's Board of Directors in January 2017 of the estimated results of operations projected during the near to mid-term period for BDI, including consideration of product development required and updated sales forecasts, and estimated additional cash resources required. The Company substantially disposed of the assets and operations during 2017 by selling the assets and licensing the intellectual property rights. The Company has recognized the exit of BDI in accordance with ASC 205-20, Discontinued Operations The Company's historical financial statements have been revised to present the operating results of the BDI business as a discontinued operation. Liabilities related to the discontinued operations of BDI totaled approximately $16,000 in accounts payable as of June 30, 2019 and December 31, 2018, respectively. There were no results of discontinued operations for the three and six months ended June 30, 2019. Summarized results of the discontinued operation are as follows for the three and six months ended June 30, 2018: Revenue $ 137,000 Cost of revenue 41,000 Gross margin 96,000 Operating expenses — Operating income 96,000 Income from discontinued operations, net of tax $ 96,000

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	Note 12. Leases: Oklahoma Lease Agreement. On February 27, 2018, Kairos entered into a lease agreement (the “Lease”) with 7725 Reno #1, LLC (the “Landlord”) to lease an approximately 107,600 square foot warehouse located in Oklahoma City, Oklahoma, including improvements thereon. Under the Lease, Kairos has the right to operate from the premises on a 24 hour/seven day a week basis. The initial term of the Lease was scheduled to terminate on February 15, 2019; however the term of the Lease was extended by agreement of the parties as discussed below. Prior to the first amendment of the Lease discussed below, the base rent for the facility was equal to $55.95/kW per month for a total of 4 Megawatts (MW) of available electrical power, or $223,800 per month. On March 26, 2018, Kairos entered into a first amendment to the Lease, whereby the Landlord agreed to increase the electrical power available for Kairos’s use from 6MW to 12MW, and, effective as of the date when such additional power became available for use, the base rent under the Lease was increased to approximately $664,760 per month. Effective November 29, 2018, Kairos entered into the second amendment to the Lease which provides the following: · extends the initial term of the Lease through August 19, 2019; · monthly base rent of $235,000 for December 2018, $230,000 for January and $190,000 per month thereafter for the duration of the Lease, including any renewals; · changes the monthly electricity usage charges; and · Kairos shall have the option to renew the Lease for up to two, three-month periods after expiration of the initial term. On May 15, 2019, the Company renewed the Lease for the first renewal term of three months, extending the lease through November 15, 2019. Corporate Lease Agreement On April 9, 2018, the Company entered into a commercial lease covering 1,694 rentable square feet of office space in Fort Lauderdale, Florida, with a third-party. The lease is for an initial term of thirty-nine months, with one five-year option to renew. The lease requires initial monthly rent of approximately $7,000, including base rent and associated operating expenses. Operating Leases At June 30, 2019, the Company had operating lease liabilities of approximately $1.0 million and right of use assets of approximately $1.0 million, which are included in the condensed interim consolidated balance sheet. The following summarizes quantitative information about the Company’s operating leases: Lease cost Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Operating lease cost $ 600,593 $ 1,201,185 Variable lease cost 861,282 1,637,335 Operating lease expense 1,461,875 2,838,520 Short-term lease rent expense 4,620 9,240 Total rent expense $ 1,466,495 $ 2,847,760 Other information Operating cash flows from operating leases $ 584,255 $ 1,208,231 Right of use assets exchanged for new operating lease liabilities $ 558,314 $ 2,105,813 Weighted-average remaining lease term – operating leases 0.5 years 0.5 years Weighted-average discount rate – operating leases 10.00 % 10.00 % Maturities of the Company’s operating lease liabilities, are as follows (unaudited): For the six months ended December 31, 2019 $ 883,790 For the year ended December 31, 2020 58,731 For the year ended December 31, 2021 35,040 Total $ 977,561 Less present value discount (27,274 ) Operating lease liabilities $ 950,287 Rent expense, recorded on a straight-line basis, was approximately $1.5 million for each of the three months ended June 30, 2019 and 2018; and was approximately $2.8 million and $1.8 million for the six months ended June 30, 2019 and 2018, respectively.

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Note 13. Commitments and contingencies: Contingencies: The Company, and its subsidiaries, are subject at times to various claims, lawsuits and governmental proceedings relating to the Company’s business and transactions arising in the ordinary course of business. The Company cannot predict the final outcome of such proceedings. Where appropriate, the Company vigorously defends such claims, lawsuits and proceedings. Some of these claims, lawsuits and proceedings seek damages, including, consequential, exemplary or punitive damages, in amounts that could, if awarded, be significant. Certain of the claims, lawsuits and proceedings arising in ordinary course of business are covered by the Company’s insurance program. The Company maintains property, and various types of liability insurance in an effort to protect the Company from such claims. In terms of any matters where there is no insurance coverage available to the Company, or where coverage is available and the Company maintains a retention or deductible associated with such insurance, the Company may establish an accrual for such loss, retention or deductible based on current available information. In accordance with accounting guidance, if it is probable that an asset has been impaired or a liability has been incurred as of the date of the financial statements, and the amount of loss is reasonably estimable, then an accrual for the cost to resolve or settle these claims is recorded by the Company in the accompanying consolidated balance sheets. If it is reasonably possible that an asset may be impaired as of the date of the financial statement, then the Company discloses the range of possible loss. Paid expenses related to the defense of such claims are recorded by the Company as incurred and paid and included in the accompanying consolidated statements of operations. Management, with the assistance of outside counsel, may from time to time adjust such accruals according to new developments in the matter, court rulings, or changes in the strategy affecting the Company’s defense of such matters. On the basis of current information, the Company does not believe there is a reasonable possibility that, other than with regard to the Class Action described below, any material loss, if any, will result from any claims, lawsuits and proceedings to which the Company is subject to either individually, or in the aggregate. On February 17, 2018, Creighton Takata filed an action asserting putative class action claims on behalf of the Company's stockholders in the United District Court for the District of New Jersey, Takata v. Riot Blockchain Inc., et al. Two additional, nearly identical complaints were subsequently filed by Richard Roys and Bruce Greenawalt in the United District States Court for the Southern District of Florida ( Roys v. Riot Blockchain Inc., et al. Greenawalt v. Riot Blockchain Inc., et al. On April 18, 2018, Joseph J. Klapper, Jr., filed a complaint against Riot Blockchain, Inc., and certain of its officers and directors in the United District Court for the District of New Jersey ( Klapper v. Riot Blockchain Inc., et al. Lead Plaintiff filed a consolidated complaint on January 15, 2019. Defendants filed motions to dismiss on March 18, 2019. In lieu of opposing defendants’ motions to dismiss, Lead Plaintiff filed another amended complaint on May 9, 2019. Defendants intend to file motions to dismiss the amended complaint on September 3, 2019. Briefing on the motions to dismiss is expected to be completed on October 22, 2019. Subject to the outcome of the pending motions, defendants intend to continue to vigorously contest Lead Plaintiff’s allegations. Because this litigation is still at this early stage, we cannot reasonably estimate the likelihood of an unfavorable outcome or the magnitude of such an outcome, if any. Shareholder Derivative Cases On April 5, 2018, Michael Jackson filed a shareholder derivative complaint on behalf of the Company in the Supreme Court of the State of New York, County of Nassau, against certain of the Company's officers and directors, as well as against an investor ( Jackson v. Riot Blockchain, Inc., et al. On May 22, 2018, two additional shareholder derivative complaints were filed on behalf of the Company in the Eighth Judicial District Court of the State of Nevada in and for the County of Clark ( Kish v. O'Rourke, et al. Gaft v. O'Rourke, et al. On September 24, 2018, the court entered an order consolidating the Gaft Kish In re Riot BlockChain, Inc. Shareholder Derivative Litigation On October 9, 2018, another shareholder derivative complaint was filed on behalf of the Company in the United District Court for the Eastern District of New York ( Rotkowitz v. O'Rourke, et al. On October 22, 2018, a fifth shareholder derivative complaint was filed on behalf of the Company in the United District Court for the Southern District of New York ( Finitz v. O'Rourke, et al. Defendants intend to vigorously contest plaintiffs’ allegations in the shareholder derivative actions and plaintiffs’ right to bring the action in the name of Riot Blockchain. But because this litigation is still at this early stage, we cannot reasonably estimate the likelihood of an unfavorable outcome or the magnitude of such an outcome, if any. SEC Subpoena and Other Matters On April 9, 2018, the Company received a subpoena from the SEC, requesting documents and information. The SEC has continued to request information from the Company and the Company has been fully cooperating with the SEC in that investigation. Beneficial Ownership Pursuant to the rules of the SEC, the Company has consistently reported its beneficial ownership positions in its proxy and other filings where beneficial ownership disclosures are presented, for certain beneficial owners with respect to any person (including any “group” as that term is used in Section 13(d)(3) of the Securities and Exchange Act of 1934 (the “Exchange Act”) who is known to the Company to be the beneficial owner of more than 5% of the Company’s common stock. The Company has relied on each person who has reported to the SEC beneficial ownership of more than 5% of our common stock to provide complete and accurate information regarding their ownership, based on the reports filed by these persons. On September 7, 2018, a complaint was filed by the SEC (Case 1:18-cv-08175) and as subsequently amended, (the “Complaint”) against, among others, a number of individuals and entities some of whom the Company has previously disclosed as its beneficial owners, as well as, Mr. John O’Rourke III, the Company’s former chairman of the board of directors and chief executive officer who resigned from the Company on September 8, 2018, as disclosed in the Current Periodic Report on Form 8-K filed September 10, 2018. Other persons named in the Complaint have previously reported that they were beneficial owners of the Company’s common stock, however, the Company has no basis to determine whether any such persons may have operated as a control group, collectively beneficially owning more than 5% of the Company’s common stock.

Tess Related Party Transactions

Tess Related Party Transactions	6 Months Ended
	Jun. 30, 2019
Related Party Transactions [Abstract]
Tess Related Party Transactions	Note 14. Tess Related Party Transactions: Tess related parties include: Powercases Inc., and 2227470 Ontario Inc., (companies that are wholly-owned by Jeffrey Mason, President and Chief Executive Officer of Tess), 1038088 Ontario Limited (a company that is wholly-owned by Fraser Mason, Chairman and Chief Financial Officer of Tess), and JLM Strategic Marketing (a proprietorship owned by Jennifer Mason, Manager Corporate Communications of Tess). The following table provides the total amount of transactions that have been entered into with Tess related parties and outstanding balances with Tess related parties as of and for the periods identified: Period Ended Services to Tess provided by (1): June 30, 2019 June 30, 2018 Powercases Inc. $ 231,328 $ 379,385 JLM Strategic Marketing $ — $ 267,304 1038088 Ontario Limited $ 45,062 $ 110,123 Payable to: June 30, 2019 December 31, 2018 Powercases Inc. $ — $ 37,250 JLM Strategic Marketing $ — $ 9,483 1038088 Ontario Limited $ — $ 52,053 (1) - 2019 amounts provided by related parties are up to the date of de-consolidation. During the period ended June 30, 2019 (up to the point of de-consolidation) and six months ended June 30, 2018, included in Tess's recorded services from related parties was approximately $260,000 and $180,000, respectively for Tess's key management personnel salaries.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Note 15. Subsequent Events: Financing During July 2019, in connection with the Company’s Sales Agreement with H.C. Wainwright, the Company received gross proceeds of approximately $2.6 million from the sale of 930,019 shares of common stock. Preferred Stock Subsequent to June 30, 2019, 800 shares of the Company’s Series B preferred stock were converted into 800 shares of the Company’s common stock. Restricted Stock Subsequent to June 30, 2019, a total of 36,500 restricted stock rights were awarded to a consultant and advisory board members. The shares vest monthly over one to two year periods. Miner acquisitions During June 2019, the Company initiated purchases of approximately 200 S9 and 30 L3 miners at a total cost of approximately $100,000. These miners are expected to be operational early in the third quarter of 2019.

Basis of presentation, summar_2

Basis of presentation, summary of significant accounting policies and recent accounting pronouncements (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of presentation and principles of consolidation	Basis of presentation and principles of consolidation The accompanying unaudited condensed interim consolidated financial statements have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the SEC. In the opinion of management, the accompanying unaudited condensed interim consolidated financial statements reflect all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation of such interim results. The results for the unaudited condensed interim consolidated statement of operations are not necessarily indicative of results to be expected for the year ending December 31, 2019 or for any future interim period. The unaudited condensed interim consolidated financial statements do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying unaudited condensed interim consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2018 and notes thereto included in the Company’s Annual Report on Form 10-K filed with the SEC on April 2, 2019.
Use of estimates	Use of estimates: The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the balance sheet and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ significantly from those estimates. The most significant accounting estimates inherent in the preparation of the Company's unaudited condensed interim consolidated financial statements include estimates associated with revenue recognition, asset valuations, the useful lives and recoverability of long-lived assets, impairment analysis of intangibles and goodwill, stock-based compensation, assumptions used in estimating the fair value of convertible notes and warrants, and the valuation allowance associated with the Company’s deferred tax assets.
Sequencing	Sequencing: On January 28, 2019, the Company adopted a sequencing policy under Accounting Standards Codification (“ASC”) 815-40-35 Derivatives and Hedging
Notes Payable Fair Value Option	Notes Payable Fair Value Option: As described further in Note 8 - Notes and Other Obligations, During the three months ended June 30, 2019, all of the Notes were converted into 1,813,500 shares of the Company’s common stock valued at their estimated fair value at the time of conversion totaling approximately $10.2 million.
Warrant Liability	Warrant Liability: The Company issued Warrants to purchase 1,908,144 shares of its common stock in connection with the Notes issued to the Investors in January 2019, and recorded these outstanding Warrants as a liability at fair value utilizing a Monte Carlo simulation model. This liability is subject to re-measurement at each balance sheet date, and any change in fair value is recognized in the Company's condensed interim consolidated statements of operations. As of June 25, 2019, the Company’s Notes had been converted in their entirety and the warrant liability was revalued and reclassified to equity, because the Warrants are no longer subject to the Company’s sequencing policy as described above.
Leases	Leases: Effective January 1, 2019, the Company accounts for its leases under ASC 842, Leases In calculating the right of use asset and lease liability, the Company elects to combine lease and non-lease components as permitted under ASC 842. The Company excludes short-term leases having initial terms of 12 months or less from the new guidance as an accounting policy election, and recognizes rent expense on a straight-line basis over the lease term. The Company continues to account for leases in the prior period financial statements under ASC Topic 840.
Loss per share	Loss per share : Basic net loss per share (“EPS”) of common stock is computed by dividing net loss by the weighted average number of shares of common stock outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. The Company excludes its unvested restricted shares and escrow shares from the net loss per share calculation. The escrow shares are excluded due to their related contingencies, the inclusion of which would result in anti-dilution. Since the Company has net losses attributable to Riot Blockchain, basic and diluted net loss per share is the same. Securities that could potentially dilute loss per share in the future were not included in the computation of diluted loss per share at June 30, 2019 and 2018 because their inclusion would be anti-dilutive are as follows: June 30, 2019 2018 Warrants to purchase common stock 3,574,257 1,671,113 Options to purchase common stock 12,000 150,000 Escrow shares 200,000 200,000 Unvested restricted stock awards 42,980 571,567 Convertible Series B preferred shares 4,999 703,000 Total 3,834,236 3,295,680
Recently issued and adopted accounting pronouncements	Recently issued and adopted accounting pronouncements: In February 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-02, Leases Leases In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment In August 2018, the FASB issued ASU 2018-15, “ Intangibles–Goodwill and Other–Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is A Service Contract In November 2018, the FASB issued ASU 2018-18, C ollaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606, .

Basis of presentation, summar_3

Basis of presentation, summary of significant accounting policies and recent accounting pronouncements (Tables)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Schedule of Antidilutive Securities	Securities that could potentially dilute loss per share in the future were not included in the computation of diluted loss per share at June 30, 2019 and 2018 because their inclusion would be anti-dilutive are as follows: June 30, 2019 2018 Warrants to purchase common stock 3,574,257 1,671,113 Options to purchase common stock 12,000 150,000 Escrow shares 200,000 200,000 Unvested restricted stock awards 42,980 571,567 Convertible Series B preferred shares 4,999 703,000 Total 3,834,236 3,295,680

Digital Currencies (Tables)

Digital Currencies (Tables)	6 Months Ended
	Jun. 30, 2019
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Summary of Additional Information About Digital Currencies	The following table presents additional information about digital currencies: June 30, 2019 (Unaudited) Beginning balance, January 1, 2019 $ 706,625 Revenue recognized from digital currencies mined 3,848,961 Mining pool operating fees (77,073 ) Sale of digital currencies (3,196,310 ) Realized gain on sale of digital currencies 641,610 Ending balance $ 1,923,813

Fair value measurements (Tables

Fair value measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Weighted Average Unobservable Inputs	A summary of weighted average (in aggregate) significant unobservable inputs (Level 3 inputs) used in measuring the Company’s Notes and Warrants at the issuance date of January 28, 2019 and during the conversion of the Notes for the three months ended June 30, 2019, are as follows: Senior Secured Promissory Notes: January 28, 2019 Three months ended June 30, 2019 (Unaudited) (Unaudited) Dividend yield 0% 0% Expected price volatility 119.5% 122.2%-127.1% Risk free interest rate 2.60% 2.07%-2.44% Expected term 1 year - Warrants: January 28, 2019 Three months ended June 30, 2019 (Unaudited) (Unaudited) Dividend yield 0% 0% Expected price volatility 111.6% 119.9%-120.5% Risk free interest rate 2.58% 2.23%-2.58% Expected term 5 years 4 years, 10 months
Schedule of Changes in Level 3 Liabilities Measured at Fair Value	The following table presents changes in Level 3 liabilities measured at fair value for the six months ended June 30, 2019. Convertible Notes Warrant Liability Issuance of senior secured convertible notes $ 6,330,726 $ — Issuance of warrants in connection with convertible notes — 2,568,934 Balance at January 28, 2019 6,330,726 2,568,934 Change in fair value 1,644,582 2,753,228 Balance at March 31, 2019 7,975,307 5,322,162 Change in fair value 2,250,651 116,498 Conversion of convertible notes to common stock (10,225,959 ) — Recalssification of warrant liability to equity — (5,438,660 ) Balance at June 30, 2019 $ — $ —

Investment in Tess (Tables)

Investment in Tess (Tables)	6 Months Ended
	Jun. 30, 2019
Investments, All Other Investments [Abstract]
Schedule of Fair Value Shares	As of April 10, 2019, the fair value of the Tess shares owned by the Company is approximately $0.1 million, calculated based upon the April 10, 2019 funding price as follows: April 10, 2019 Tess shares held by Riot Blockchain, Inc. 2,708,333 Per share fair value $ 0.03 Fair value of Tess shares held by Riot Blockchain, Inc. $ 90,174
Schedule of Deconsolidation Result	The deconsolidation of Tess resulted in a gain of approximately $1.1 million calculated as follows: Current assets $ 130,432 Less: Accounts payable 761,875 Accrued expenses 273,935 Convertible notes 1,696,083 Net liabilities (2,601,461 ) Non-controlling interest share 1,552,848 Sub-total (1,048,613 ) Less: fair value of shares owned by Riot Blockchain 90,174 Gain on deconsolidation of Tess $ (1,138,787 )

Stock based compensation, opt_2

Stock based compensation, options and warrants (Tables)	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Recognized Stock-based Compensation	The Company recognized total stock-based compensation expense during the three and six months ended June 30, 2019 and 2018 granted under the Company’s 2017 equity incentive plan (the “Plan”), from the following categories: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Restricted stock awards under the Plan $ 115,026 $ 1,432,593 $ 291,570 $ 2,199,542 Stock option awards under the Plan — 175,493 58,498 292,487 Total stock-based compensation $ 115,026 $ 1,608,086 $ 350,068 $ 2,492,029
Summary of Restricted Plan Activity	A summary of the Company’s unvested restricted stock activity in the six months ended June 30, 2019 is presented here: Number of Shares Weighted Average Grant-Date Unvested at January 1, 2019 95,939 $ 12.49 Vested (37,459 ) $ 8.01 Granted 24,500 $ 5.11 Forfeited (40,000 ) $ 16.82 Unvested at June 30, 2019 42,980 $ 7.43
Summary of Stock Incentive Plan Activity	A summary of activity under the Plan for the six months ended June 30, 2019 is presented below: Shares Underlying Options Weighted Average Exercise Price Weighted Average Remaining Contractual Aggregate Intrinsic Value Outstanding at January 1, 2019 62,000 $ 15.71 9.2 $ — Forfeited (50,000 ) $ 18.50 — — Outstanding at June 30, 2019 12,000 $ 4.09 9.2 $ — Exercisable at June 30, 2019 12,000 $ 4.09 9.2 $ —
Schedule of Changes in Outstanding Warrants	Following is a summary of outstanding warrants that were issued outside of the Plan for the six months ended June 30, 2019: Shares Underlying Options/Warrants Weighted Average Exercise Price Weighted Average Remaining Contractual Aggregate Intrinsic Value Outstanding at January 1, 2019 1,671,113 $ 39.47 2.0 $ — Granted 1,908,144 $ 1.94 5.2 $ 2,537,832 Forfeited (5,000 ) $ 7.90 — $ — Outstanding at June 30, 2019 3,574,257 $ 19.48 3.4 $ 2,289,773 Exercisable at June 30, 2019 1,928,144 $ 19.48 0.7 $ —

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Operation and Assets and Liabilities Related to Discontinued Operations	Summarized results of the discontinued operation are as follows for the three and six months ended June 30, 2018: Revenue $ 137,000 Cost of revenue 41,000 Gross margin 96,000 Operating expenses — Operating income 96,000 Income from discontinued operations, net of tax $ 96,000

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Schedule of Operating Leases	The following summarizes quantitative information about the Company’s operating leases: Lease cost Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Operating lease cost $ 600,593 $ 1,201,185 Variable lease cost 861,282 1,637,335 Operating lease expense 1,461,875 2,838,520 Short-term lease rent expense 4,620 9,240 Total rent expense $ 1,466,495 $ 2,847,760 Other information Operating cash flows from operating leases $ 584,255 $ 1,208,231 Right of use assets exchanged for new operating lease liabilities $ 558,314 $ 2,105,813 Weighted-average remaining lease term – operating leases 0.5 years 0.5 years Weighted-average discount rate – operating leases 10.00 % 10.00 %
Schedule of Maturities of Operating Lease Liabilities	Maturities of the Company’s operating lease liabilities, are as follows (unaudited): For the six months ended December 31, 2019 $ 883,790 For the year ended December 31, 2020 58,731 For the year ended December 31, 2021 35,040 Total $ 977,561 Less present value discount (27,274 ) Operating lease liabilities $ 950,287

Tess Related Party Transactio_2

Tess Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2019
Related Party Transactions [Abstract]
Schedule of Tess Related Party Transactions	The following table provides the total amount of transactions that have been entered into with Tess related parties and outstanding balances with Tess related parties as of and for the periods identified: Period Ended Services to Tess provided by (1): June 30, 2019 June 30, 2018 Powercases Inc. $ 231,328 $ 379,385 JLM Strategic Marketing $ — $ 267,304 1038088 Ontario Limited $ 45,062 $ 110,123 Payable to: June 30, 2019 December 31, 2018 Powercases Inc. $ — $ 37,250 JLM Strategic Marketing $ — $ 9,483 1038088 Ontario Limited $ — $ 52,053 (1) - 2019 amounts provided by related parties are up to the date of de-consolidation.

Organization (Details)

Organization (Details)	Jun. 30, 2019
Kairos Global Technology, Inc [Member]
Number of computers acquired	8,000

Liquidity and Financial Condi_2

Liquidity and Financial Condition (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019	Jan. 28, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Cash and cash equivalents	$ 16,110,630	$ 1,654,034			$ 225,390		$ 41,651,965
Digital currencies	1,900,000
Working capital	14,600,000
Stockholders' equity	(26,137,560)	(20,667,244)	$ 8,769,373		(4,491,012)	$ (43,235,055)	$ (49,627,399)
Accumulated deficit	212,006,522				$ 197,199,197
Total investment	3,000,000
Proceeds from the sale of stock	19,671,712
Common Stock [Member] | H.C. Wainwright [Member]
Maximum amount of sales shares	100,000,000
Proceeds from the sale of stock	$ 18,900,000
Percentage of commission	3.00%
Weighted average price	$ 3.26
Senior Secured Convertible Promissory Notes [Member] | Investors [Member]
Debt instrument face amount	$ 3,358,333			$ 3,358,333

Basis of presentation, summar_4

Basis of presentation, summary of significant accounting policies (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jan. 28, 2019	Dec. 31, 2018
Conversion of notes into shares	1,813,500
Fair value of notes	$ 10,225,959	$ 10,225,959
Expected operating liabilities to be recorded from adoption of FASB ASU 2016-02				$ 1,500,000
Senior Secured Promissory Notes [Member]
Warrant issued			1,908,144
Senior Secured Convertible Promissory Notes [Member]
Conversion of notes into shares	1,813,500
Fair value of notes	$ 10,200,000	3,900,000
Senior Secured Convertible Promissory Notes [Member] | Investors [Member]
Debt instrument face amount	$ 3,358,333	$ 3,358,333	$ 3,358,333
Warrant issued			1,908,144

Basis of presentation, summar_5

Basis of presentation, summary of significant accounting policies (Schedule of Antidilutive Securities) (Details) - shares	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	3,834,236	3,295,680
Warrants to purchase common stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	3,574,257	1,671,113
Option to purchase common stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	12,000	150,000
Escrow shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	200,000	200,000
Unvested restricted stock awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	42,980	571,567
Convertible Preferred Stock Series B [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	4,999	703,000

Digital Currencies (Summary of

Digital Currencies (Summary of Additional Information About Digital Currencies) (Details)	6 Months Ended
	Jun. 30, 2019USD ($)
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Beginning balance, January 1, 2019	$ 706,625
Revenue recognized from digital currencies mined	3,848,961
Mining pool operating fees	(77,073)
Sale of digital currencies	(3,196,310)
Realized gain on sale of digital currencies	641,610
Digital currencies, ending balance	$ 1,923,813

Fair value measurements (Narrat

Fair value measurements (Narrative) (Details)	3 Months Ended
	Jun. 30, 2019shares
Fair Value Disclosures [Abstract]
Conversion of notes into shares	1,813,500

Fair value measurements (Schedu

Fair value measurements (Schedule of Weighted Average Unobservable Inputs) (Details) - Fair Value, Inputs, Level 3 [Member]	1 Months Ended	3 Months Ended
	Jan. 28, 2019	Jun. 30, 2019
Dividend yield [Member] | Warrant [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	0%	0%
Expected Price volatility [Member] | Warrant [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	111.6%	119.9%-120.5%
Risk free interest rate [Member] | Warrant [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	2.58%	2.23%-2.58%
Expected term [Member] | Warrant [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	5 years	4 years, 10 months
Senior Secured Convertible Promissory Notes [Member] | Dividend yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	0%	0.00
Senior Secured Convertible Promissory Notes [Member] | Expected Price volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	119.5%	122.2%-127.1%
Senior Secured Convertible Promissory Notes [Member] | Risk free interest rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	2.60%	2.07%-2.44%
Senior Secured Convertible Promissory Notes [Member] | Expected term [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average Unobservable Inputs	1 year

Fair value measurements (Sche_2

Fair value measurements (Schedule of Changes in Level 3 Liabilities Measured at Fair Value) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2019	Jun. 30, 2018
Conversion of convertible notes to common stock	$ (10,225,959)		$ (10,225,959)
Recalssification of warrant liability to equity			5,438,660
Convertible Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Issuance of senior secured convertible notes		$ 6,330,726
Issuance of warrants in connection with convertible notes
Balance Beginning	7,975,907	6,330,726	6,330,726
Change in fair value	2,250,651	1,644,582
Conversion of convertible notes to common stock	(10,225,959)
Recalssification of warrant liability to equity
Balance Ending		7,975,907
Warrant [Member] | Fair Value, Inputs, Level 3 [Member]
Issuance of senior secured convertible notes
Issuance of warrants in connection with convertible notes		2,568,934
Balance Beginning	5,322,162	2,568,934	2,568,934
Change in fair value	116,498	2,753,228
Conversion of convertible notes to common stock
Recalssification of warrant liability to equity	(5,438,660)
Balance Ending		$ 5,322,162

Investment in Coinsquare (Detai

Investment in Coinsquare (Details) - Coinsquare [Member] - USD ($)	1 Months Ended
	Sep. 30, 2017	Feb. 28, 2018
Minority interest	$ 3,000,000
Amount of Investment		$ 6,400,000
Equity investment		2,800,000
Financing amount		24,000,000
Warrant acquired cash payment		$ 3,600,000
Percentage of owned		12.00%

Investment in Tess (Narrative)

Investment in Tess (Narrative) (Details) - Tess Inc [Member] - CAD ($)	Apr. 10, 2019	Dec. 31, 2018	Oct. 31, 2017
Business Acquisition [Line Items]
Ownership acquired	9.00%		52.01%
Common Stock [Member]
Business Acquisition [Line Items]
Shares issued	23,800,000	189,000
Common Stock [Member] | Canada, Dollars [Member]
Business Acquisition [Line Items]
Shares issued, value	$ 1,200,000
Minimum [Member]
Business Acquisition [Line Items]
Ownership acquired		52.01%
Maximum [Member]
Business Acquisition [Line Items]
Ownership acquired		50.20%

Investment in Tess (Shedule of

Investment in Tess (Shedule of Fair value shares) (Details) - Tess Inc [Member]	Apr. 10, 2019USD ($)$ / sharesshares
Tess shares held by Riot Blockchain, Inc. | shares	2,708,333
Per share fair value | $ / shares	$ 0.03
Fair value of Tess shares held by Riot Blockchain, Inc. | $	$ 90,174

Investment in Tess (Schedule of

Investment in Tess (Schedule of Deconsolidation Result) (Details) - USD ($)	Apr. 10, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Current assets		$ 18,366,085		$ 18,366,085		$ 2,310,549
Less:
Net liabilities		(4,829,848)		(4,829,848)		$ (9,369,316)
Gain on deconsolidation on Tess		$ 1,138,787		$ 1,138,787
Tess Inc [Member]
Current assets	$ 130,432
Less:
Accounts payable	761,875
Accrued expenses	273,935
Convertiable notes	1,696,083
Net liabilities	(2,601,461)
Non-controlling interest share	1,552,848
Sub-total	(1,048,613)
Less: Fair value of shares owned by Riot Blockchain	90,174
Gain on deconsolidation on Tess	$ (1,138,787)

Notes and Other Obligations (De

Notes and Other Obligations (Details)	1 Months Ended					3 Months Ended		6 Months Ended
	Jun. 27, 2019USD ($)	Aug. 23, 2018USD ($)	Aug. 23, 2018CAD ($)	Mar. 28, 2018CAD ($)	Feb. 21, 2018USD ($)	Jun. 30, 2019USD ($)shares	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)shares	Jun. 30, 2018USD ($)	Jan. 28, 2019USD ($)$ / sharesshares	Mar. 28, 2018$ / shares
Debt Instrument [Line Items]
Conversion of notes into shares | shares						1,813,500
Fair value of conversion of shares						$ 10,225,959		$ 10,225,959
Gain on extinguishment of debt								808,026
One time settlement amount								100,000
Other income						$ 729,154		$ 808,026
Restricted Stock [Member]
Debt Instrument [Line Items]
Issuance of common stock | shares								106,251
Senior Secured Convertible Promissory Notes [Member]
Debt Instrument [Line Items]
Interest rate										8.00%
Fair value of notes										$ 6,330,726
Upfront costs and fees								$ 358,333
Conversion of notes into shares | shares						1,813,500
Fair value of conversion of shares						$ 10,200,000		$ 3,900,000
Senior Secured Convertible Promissory Notes [Member] | Restricted Stock [Member]
Debt Instrument [Line Items]
Issuance of common stock | shares								150,000
Senior Secured Convertible Promissory Notes [Member] | Investors [Member]
Debt Instrument [Line Items]
Conversion price | $ / shares										$ 2
Percentage of lowest volume-weighted adjusted price of shares										80.00%
Exercise price | $ / shares										$ 1.94
Debt instrument face amount						$ 3,358,333		$ 3,358,333		$ 3,358,333
Percentage amount of shares issuable upon full conversion of Notes										300.00%
Warrant issued | shares										1,908,144
Senior Secured Convertible Promissory Notes [Member] | Investors [Member] | Maximum [Member]
Debt Instrument [Line Items]
Percentage of number of shares issuable										19.99%
Percentage of beneficial ownership of shares										9.99%
Senior Secured Convertible Promissory Notes [Member] | Investors [Member] | Minimum [Member]
Debt Instrument [Line Items]
Percentage of beneficial ownership of shares										4.99%
Senior Secured Convertible Promissory Notes [Member] | Private Financing [Member]
Debt Instrument [Line Items]
Debt instrument face amount										$ 3,000,000
Tess Inc [Member]
Debt Instrument [Line Items]
Ownership acquired						9.00%		9.00%
Tess Inc [Member] | Convertible Note [Member] | Private Placement [Member]
Debt Instrument [Line Items]
Conversion price | $ / shares											$ 0.10
Tess Inc [Member] | Convertible Note [Member] | Canada, Dollars [Member] | Private Placement [Member]
Debt Instrument [Line Items]
Proceeds from convertible debt held in escrow				$ 2,200,000
Tess Inc [Member] | Promissory Note [Member] | Private Placement [Member]
Debt Instrument [Line Items]
Notes Payable		$ 1,696,000
Cash released		$ 921,000
Interest rate		5.00%	5.00%
Proceeds from convertible debt held in escrow		$ 775,555
Tess Inc [Member] | Promissory Note [Member] | Canada, Dollars [Member] | Private Placement [Member]
Debt Instrument [Line Items]
Proceeds from convertible debt held in escrow			$ 1,000,000
Tess Inc [Member] | Third party [Member] | Convertible Note [Member] | Canada, Dollars [Member]
Debt Instrument [Line Items]
Proceeds from convertible debt held in escrow				$ 2,200,000
BMSS Purchase Agreement [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 1,340,000
Purchase cost					$ 8,500,000
Gain on extinguishment of debt	390,000
One time settlement amount	$ 950,000
Settlement with certain creditors [Member]
Debt Instrument [Line Items]
Gain on extinguishment of debt								$ 808,000
Value of liabilities settled with certain creditors						$ 3,287,000		3,287,000
Cash payment made to settle liabilities with certain creditors								2,479,000
Other income								$ 729,000

Stockholders' equity (Details)

Stockholders' equity (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Class of Stock [Line Items]
Proceeds from the sale of stock	$ 19,671,712
Restricted Stock [Member]
Class of Stock [Line Items]
Issuance of common stock	106,251
Restricted Stock [Member] | Director [Member]
Class of Stock [Line Items]
Issuance of common stock	93,751
Restricted Stock [Member] | Consultant [Member]
Class of Stock [Line Items]
Issuance of common stock	12,500
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock converted into common shares	8,001
Series B Preferred Stock [Member] | H.C. Wainwright [Member]
Class of Stock [Line Items]
Maximum amount of sales shares	$ 100,000,000
Proceeds from the sale of stock	$ 18,900,000
Percentage of commission	3.00%
Weighted average price	$ 3.26

Stock based compensation, opt_3

Stock based compensation, options and warrants (Narrative) (Details)	6 Months Ended
	Jun. 30, 2019USD ($)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized compensation cost	$ 300,000
Unrecognized compensation cost, period	5 months
Restricted Stock [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Fair value of restricted stock granted	$ 100,000

Stock based compensation, opt_4

Stock based compensation, options and warrants (Schedule of Recognized Stock-based Compensation) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 115,026	$ 1,608,086	$ 350,068	$ 2,492,029
Restricted Stock [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	115,026	1,432,593	291,570	2,199,542
Stock options awards under the Plan [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation		$ 175,493	$ 58,498	$ 292,487

Stock based compensation, opt_5

Stock based compensation, options and warrants (Schedule of Restricted Stock Activity) (Details) - Restricted Stock [Member]	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Number of shares
Unvested at January 1, 2019 | shares	95,939
Vested | shares	(37,459)
Granted | shares	24,500
Forfeited | shares	(40,000)
Unvested at June 30, 2019 | shares	42,980
Weighted Average Grant Date Fair value
Unvested at January 1, 2019 | $ / shares	$ 12.49
Vested | $ / shares	8.01
Granted | $ / shares	5.11
Forfeited | $ / shares	16.82
Unvested at June 30, 2019 | $ / shares	$ 7.43

Stock based compensation, opt_6

Stock based compensation, options and warrants (Schedule of Award Activity) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Stock Incentive Plan [Member]
Shares Underlying Options
Outstanding at January 1, 2019	62,000
Forfeited	(50,000)
Outstanding at June 30, 2019	12,000	62,000
Exercisable at June 30, 2019	12,000
Weighted Average Exercise Price
Outstanding at June 30, 2019	$ 15.71
Forfeited	18.50
Outstanding at June 30, 2019	4.09	$ 15.71
Exercisable at June 30, 2019	$ 4.09
Weighted Average Remaining Contractual Term
Outstanding at June 30, 2019	9 years 2 months 12 days	9 years 2 months 12 days
Exercisable at June 30, 2019	9 years 2 months 12 days
Aggregate Intrinsic Value
Outstanding at June 30, 2019
Outstanding at June 30, 2019
Exercisable at June 30, 2019
Other common stock purchase options and warrants [Member]
Shares Underlying Options
Outstanding at January 1, 2019	1,671,113
Granted	1,908,144
Forfeited	(5,000)
Outstanding at June 30, 2019	3,574,257	1,671,113
Exercisable at June 30, 2019	1,928,144
Weighted Average Exercise Price
Outstanding at June 30, 2019	$ 39.47
Granted	1.94
Forfeited	7.90
Outstanding at June 30, 2019	19.48	$ 39.47
Exercisable at June 30, 2019	$ 19.48
Weighted Average Remaining Contractual Term
Outstanding at June 30, 2019	5 years 2 months 12 days	2 years
Granted	3 years 4 months 24 days
Exercisable at June 30, 2019	8 months 12 days
Aggregate Intrinsic Value
Outstanding at June 30, 2019
Granted	2,537,832
Outstanding at June 30, 2019	2,289,773
Exercisable at June 30, 2019

Discontinued Operations (Detail

Discontinued Operations (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
BDI Member
Current liabilities:
Accounts payable	$ 16,000	$ 16,000

Discontinued Operations (Schedu

Discontinued Operations (Schedule of Operation and Assets and Liabilities Related to Discontinued Operations) (Details) - BDI [Member]	6 Months Ended
	Jun. 30, 2018USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 137,000
Cost of revenue	41,000
Gross margin	96,000
Operating expenses
Operating income	96,000
Income from discontinued operations, net of tax	$ 96,000

Leases (Narrative) (Details)

Leases (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Apr. 09, 2018USD ($)ft²	Mar. 26, 2018USD ($)	Feb. 27, 2018USD ($)ft²
Lessee, Lease, Description [Line Items]
Operating lease liabilities	$ 1,000,000		$ 1,000,000
Right of use assets	1,000,000		1,000,000
Rent expense	1,500,000	$ 1,500,000	2,800,000	$ 1,800,000
Office Space - Fort Lauderdale, Florida [Member]
Lessee, Lease, Description [Line Items]
Area of lease | ft²					1,694
Base rent per month					$ 7,000
Lease term					39 months
Lease renewal term					5 years
Kairos Global Technology, Inc [Member]
Lessee, Lease, Description [Line Items]
Area of lease | ft²							107,600
Base rent per month	235,000		235,000			$ 664,760	$ 223,800
Monthly base rent owed for December 2018	230,000		230,000
Monthly base rent owed for all remaining periods thereafter for the duration of the lease, including any renewals	$ 190,000		$ 190,000

Leases (Schedule of Operating L

Leases (Schedule of Operating Leases) (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)
Lease cost
Operating lease cost	$ 600,593	$ 1,201,185
Variable lease cost	861,282	1,637,335
Operating lease expense	1,461,875	2,838,520
Short-term lease rent expense	4,620	9,240
Total rent expense	1,466,495	2,847,760
Other information
Operating cash flows from operating leases	584,255	1,208,231
Right of use assets exchanged for new operating lease liabilities	$ 558,314	$ 2,105,813
Weighted-average remaining lease term - operating leases	10 months 25 days	10 months 25 days
Weighted-average discount rate - operating leases	10.00%	10.00%

Leases (Schedule of Maturities

Leases (Schedule of Maturities of Operating Lease Liabilities) (Details)	Jun. 30, 2019USD ($)
Leases [Abstract]
For the nine months ended December 31,2019	$ 883,790
For the year ended December 31, 2020	58,731
For the year ended December 31, 2021	35,040
Total operating lease obligation	977,561
Less present value discount	(27,274)
Operating lease liabilities	$ 950,287

Tess Related Party Transactio_3

Tess Related Party Transactions (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Tess [Member]
Related Party Transaction [Line Items]
Key management personnel salaries	$ 260,000	$ 180,000

Tess Related Party Transactio_4

Tess Related Party Transactions (Schedule of Tess Related Party Transactions) (Details) - USD ($)		6 Months Ended		12 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Powercases Inc [Member]
Related Party Transaction [Line Items]
Services to Tess provided by	[1]	$ 231,328	$ 379,385
Payable to				$ 37,250
JLM Strategic Marketing [Member]
Related Party Transaction [Line Items]
Services to Tess provided by	[1]		267,304
Payable to				9,483
1038088 Ontario Limited [Member]
Related Party Transaction [Line Items]
Services to Tess provided by	[1]	45,062	$ 110,123
Payable to				$ 52,053
[1]	- 2019 amounts provided by related parties are up to the date of de-consolidation

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	1 Months Ended	6 Months Ended
	Jul. 31, 2019	Jun. 30, 2019	Jun. 30, 2018
Subsequent Event [Line Items]
Proceeds from the sale of stock		$ 19,671,712
Purchase cost		$ 100,000
Restricted Stock [Member]
Subsequent Event [Line Items]
Sale of common stock		106,251
Stock granted		24,500
Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred stock converted into common shares		8,001
H.C. Wainwright [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Proceeds from the sale of stock		$ 18,900,000
H.C. Wainwright [Member] | Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Proceeds from the sale of stock		$ 18,900,000
Subsequent Event [Member] | Restricted Stock [Member] | Consultant [Member]
Subsequent Event [Line Items]
Stock granted	36,500
Subsequent Event [Member] | Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred stock converted into common shares	800
Subsequent Event [Member] | H.C. Wainwright [Member]
Subsequent Event [Line Items]
Proceeds from the sale of stock	$ 2,600,000
Subsequent Event [Member] | H.C. Wainwright [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Sale of common stock	930,019