Riot Blockchain (RIOT) 10-K 16 Mar 22 2021 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Mar. 08, 2022	Jun. 30, 2021
Cover [Abstract]
Entity Central Index Key	0001167419
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-33675
Entity Registrant Name	RIOT BLOCKCHAIN, INC.
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	84-1553387
Entity Address, Address Line One	3855 Ambrosia Street
Entity Address, Address Line Two	Suite 301
Entity Address, City or Town	Castle Rock
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80109
City Area Code	303
Local Phone Number	794-2000
Title of 12(b) Security	Common Stock no par value per share
Trading Symbol	RIOT
Name of Exchange on which Security is Registered	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		117,273,760
Entity Public Float			$ 3,100
DOCUMENTS INCORPORATED BY REFERENCE	Portions of the registrant’s definitive proxy statement to be delivered to stockholders and filed with the Securities and Exchange Commission in connection with the registrant’s Annual Stockholders’ Meeting to be held in 2022 are incorporated by reference into Part III of this Annual Report on Form 10-K. Only those portions of the definitive proxy statement that are specifically incorporated by reference herein shall constitute a part of this Annual Report on Form 10-K.
Auditor Name	Marcum LLP
Auditor Location	Los Angeles, CA
Auditor Firm Id	688

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 312,315	$ 223,382
Accounts receivable, net	15,398
Prepaid expenses and other current assets	7,135	1,257
Costs and estimated earnings in excess of billings	9,862
Cryptocurrencies	159,544	11,626
Investments in marketable equity securities, at fair value	10,804
Future power credits, current portion	58,481
Total current assets	573,539	236,265
Property and equipment, net	262,980	10,143
Deposits	266,170	33,093
Long-term investments	310	310
Right of use assets	13,189
Derivative asset	26,079
Intangible assets, net	14,162	336
Goodwill	349,063
Future power credits, less current portion	25,447
Total assets	1,530,939	280,147
Current liabilities
Accounts payable	20,037	718
Accrued expenses	22,071	1,582
Billings in excess of costs and estimated earnings	5,264
Deferred revenue, current portion	2,843	97
Operating lease liability, current portion	1,182
Contingent consideration liability - future power credits, current portion	58,481
Total current liabilities	109,878	2,397
Deferred revenue, less current portion	19,796	679
Operating lease liability, less current portion	12,257
Contingent consideration liability - future power credits, less current portion	25,447
Other long-term liabilities	6,241
Total liabilities	173,619	3,076
Commitments and contingencies - Note 15
Stockholders' equity
Common stock, no par value; 170,000,000 shares authorized; 116,748,472 and 78,523,517 shares issued and outstanding as of December 31, 2021 and 2020, respectively	1,595,147	506,961
Accumulated deficit	(237,838)	(229,912)
Total stockholders' equity	1,357,320	277,071
Total liabilities and stockholders' equity	1,530,939	280,147
2% Convertible Preferred Stock Series A [Member]
Stockholders' equity
Preferred stock
0% Convertible Preferred Stock Series B [Member]
Stockholders' equity
Preferred stock	$ 11	$ 22

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
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	116,748,472	78,523,517
Common stock, shares outstanding	116,748,472	78,523,517
2% Convertible Preferred Stock Series A [Member]
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
0% Convertible Preferred Stock Series B [Member]
Preferred stock, shares authorized	1,750,001	1,750,001
Preferred stock, shares issued	2,199	4,199
Preferred stock, shares outstanding	2,199	4,199

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue:
Total Revenue	$ 213,243	$ 12,081	$ 6,837
Costs and expenses:
Acquisition-related costs	21,198
Selling, general and administrative	87,429	10,251	9,159
Depreciation and amortization	26,324	4,494	119
Change in fair value of derivative asset	(18,626)
Change in fair value of contingent consideration	975
Realized gain on sale/exchange of cryptocurrencies	(253)	(5,184)	(665)
Impairment of intangible rights acquired			700
Impairment of long-term investment		9,413
Impairment of cryptocurrencies	36,462	989	844
Total costs and expenses	235,602	26,214	16,254
Operating loss	(22,359)	(14,133)	(9,417)
Other income (expense):
Loss on issuance of convertible notes, common stock and warrants			(6,155)
Change in fair value of warrant liability			(2,869)
Change in fair value of convertible notes			(3,896)
Reversal of registration rights penalty		1,358
Gain on deconsolidation of Tess			1,139
Gain on sale of equipment		29
Interest income		85
Interest expense	(296)		(122)
Other income (expense)	2,378	(6)	874
Realized gain on sale/exchange of long-term investment	26,260
Unrealized loss on marketable equity securities	(13,655)
Total other income (expense)	14,687	1,466	(11,029)
Net loss before taxes	(7,672)	(12,667)	(20,446)
Current income tax expense	(254)
Deferred income tax benefit			143
Net loss	(7,926)	(12,667)	(20,303)
Net (income) loss attributable to non-controlling interest		(7)	264
Net loss attributable to Riot Blockchain	$ (7,926)	$ (12,674)	$ (20,039)
Basic and diluted net loss per share	$ (0.08)	$ (0.30)	$ (1.02)
Basic and diluted weighted average number of shares outstanding	93,452,764	41,976,704	19,597,977
Revenue, net - mining [Member]
Revenue:
Total Revenue	$ 184,422	$ 11,984	$ 6,741
Costs and expenses:
Cost of revenues	45,513	6,251	6,097
Revenue, net - hosting [Member]
Revenue:
Total Revenue	24,546
Costs and expenses:
Cost of revenues	32,998
Revenue, net - engineering [Member]
Revenue:
Total Revenue	4,178
Costs and expenses:
Cost of revenues	3,582
Other Revenue [Member]
Revenue:
Total Revenue	$ 97	$ 97	$ 96

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Accumulated deficit [Member]	Total Riot Blockchain stockholder's equity [Member]	Non-controlling interest [Member]	Total
BALANCE at Dec. 31, 2018	$ 69	$ 202,917	$ (197,199)	$ 5,787	$ (1,296)	$ 4,491
BALANCE, shares at Dec. 31, 2018	13,000	14,519,058
Issuance of common stock, net of offering costs/At-the-market offering		$ 23,829		23,829		23,829
Issuance of common stock, net of offering costs/At-the-market offering, shares		8,351,762
Conversion of preferred stock to common stock	$ (47)	$ 47
Conversion of preferred stock to common stock, shars	(8,801)	8,801
Delivery of common stock underlying restricted stock units, shares		239,751
Common stock issued with convertible notes		$ 255		255		255
Common stock issued with convertible notes, shares		150,000
Common stock issued in connection with conversion of notes payable		$ 10,226		10,226		10,226
Common stock issued in connection with conversion of notes payable, shares		1,813,500
Reclassification of warrant liability to equity		$ 5,439		5,439		5,439
Stock-based compensation		745		745		745
Net income (loss) attributable to non-controlling interest					(264)	(264)
Deconsolidation of Tess					1,553	1,553
Net loss			(20,039)	(20,039)		(20,039)
BALANCE at Dec. 31, 2019	$ 22	$ 243,458	(217,238)	26,242	(7)	26,235
BALANCE, shares at Dec. 31, 2019	4,199	25,082,872
Issuance of common stock to settle executive compensation		$ 175		175		175
Issuance of common stock to settle executive compensation, shares		122,377
Delivery of common stock underlying restricted stock units to settle executive compensation, shares		5,000
Delivery of common stock underlying restricted stock units, net of tax withholding settlement		$ (446)		(446)		(446)
Delivery of common stock underlying restricted stock units, net of tax withholding settlement, shares		2,048,096
Delivery of common stock underlying restricted stock units for consulting and advisory services, shares		40,634
Issuance of common stock, net of offering costs/At-the-market offering		$ 257,472		257,472		257,472
Issuance of common stock, net of offering costs/At-the-market offering, shares		49,932,051
Issuance of common stock related to exercise of warrants		$ 2,895		2,895		2,895
Issuance of common stock related to exercise of warrants, shares		1,492,487
Cancellation of Prive Escrow shares, shares		(200,000)
Stock-based compensation		$ 3,407		3,407		3,407
Net income (loss) attributable to non-controlling interest					7	7
Net loss			(12,674)	(12,674)		(12,674)
BALANCE at Dec. 31, 2020	$ 22	$ 506,961	(229,912)	277,071		277,071
BALANCE, shares at Dec. 31, 2020	4,199	78,523,517
Delivery of common stock underlying restricted stock units, net of shares settled for tax withholding settlement		$ (5,082)		(5,082)		(5,082)
Delivery of common stock underlying restricted stock units, net of shares settled for tax withholding settlement, shares		464,021
Issuance of common stock, net of offering costs/At-the-market offering		$ 669,916		669,916		669,916
Issuance of common stock, net of offering costs/At-the-market offering, shares		24,344,057
Issuance of common stock related to exercise of warrants		$ 806		806		806
Issuance of common stock related to exercise of warrants, shares		415,657
Issuance of common stock for settlement of warrants on a cashless basis, shares		543,686
Issuance of common stock in connection with the acquisition of Whinstone		$ 326,152		326,152		326,152
Issuance of common stock in connection with the acquisition of Whinstone, shares		11,800,000
Issuance of common stock in connection with the acquisition of ESS Metron, net of 70,156 shares withheld		$ 26,735		26,735		26,735
Issuance of common stock in connection with the acquisition of ESS Metron, net of 70,156 shares withheld		645,248
Issuance of common stock warrant for settlement of advisory fees		$ 1,157		1,157		1,157
Conversion of preferred stock to common stock	$ (11)	$ 11
Conversion of preferred stock to common stock, shars	(2,000)	2,000
Stock option exercise, shares		10,286
Stock-based compensation		$ 68,491		68,491		68,491
Net income (loss) attributable to non-controlling interest
Net loss			(7,926)	(7,926)		(7,926)
BALANCE at Dec. 31, 2021	$ 11	$ 1,595,147	$ (237,838)	$ 1,357,320		$ 1,357,320
BALANCE, shares at Dec. 31, 2021	2,199	116,748,472

Consolidated Statement of Sto_2

Consolidated Statement of Stockholders' Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2021shares
Statement of Stockholders' Equity [Abstract]
Issuance of common stock in connection with the acquisition of ESS Metron with Held	70,156
Settlement of warrants on cashless basis	1,257,235

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net loss	$ (7,926)	$ (12,667)	$ (20,303)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	68,491	3,407	745
Depreciation and amortization	26,324	4,494	119
Amortization of license fee revenue	(97)	(97)	(96)
Amortization of right of use assets	275	367	2,297
Income tax expense (benefit)	254		(143)
Issuance of common stock warrant for settlement of advisory fees	1,157
Impairment of long-term investment		9,413
Impairment of cryptocurrencies	36,462	989	844
Loss on issuance of convertible notes, common stock and warrants			6,155
Change in fair value of convertible notes			3,896
Change in fair value of warrant liability			2,869
Gain on deconsolidation of Tess			(1,139)
Impairment of intangible rights acquired			700
Reversal of registration rights penalty		(1,358)
Change in fair value of derivative asset	(12,112)
Change in fair value of contingent consideration	975
Gain on extinguishment of accounts payable, other liabilities and accrued interest			(854)
Realized gain on sale/exchange of long-term investment	(26,260)
Realized gain on sale/exchange of cryptocurrencies	(253)	(5,184)	(665)
Unrealized loss on marketable equity securities	13,655
Gain on sale of equipment		(29)
Accrued interest on Verady investment			(20)
Changes in assets and liabilities:
Accounts receivable	(4,446)
Prepaid expenses and other current assets	(1,890)	795	(101)
Costs and estimated earnings in excess of billings	3,343
Cryptocurrencies - mining	(184,422)	(11,838)	(6,606)
Security deposits	(3,180)
Future power credits	(975)
Accounts payable	(2,770)	1	(1,887)
Accrued expenses	16,070	928	1,070
Billings in excess of costs and estimated earnings	(619)
Customer deposits	6,124
Deferred revenue	(12,895)
Lease liability	(1,662)	(368)	(2,296)
Net cash used in operating activities	(86,377)	(11,147)	(15,415)
Cash flows from investing activities
Acquisition of Whinstone, net of cash acquired	(40,879)
Acquisition of ESS Metron, net of cash acquired	(29,567)
Proceeds from the sale of long-term investments	1,800
Proceeds from sale of cryptocurrencies	295	8,298	3,196
Proceeds from the sale of equipment		146
Deposits on equipment	(274,833)	(33,093)	(1,449)
Purchases of property and equipment, including construction in progress	(147,116)	(8,139)	(4,958)
Patent costs incurred	(30)	(44)	(38)
Net cash used in investing activities	(490,330)	(32,832)	(3,249)
Cash flows from financing activities
Proceeds from issuance of convertible notes			3,000
Repayment of notes payable and other obligations			(950)
Proceeds from the issuance of common stock / At-the-market offering	684,817	264,727	24,825
Offering costs for the issuance of common stock / At-the-market offering	(14,901)	(7,255)	(996)
Proceeds from exercise of common stock warrants	806	2,895
Repurchase of common shares to pay employee withholding taxes	(5,082)	(446)
Net cash provided by financing activities	665,640	259,921	25,879
Net increase in cash and cash equivalents	88,933	215,942	7,215
Cash and cash equivalents at beginning of year	223,382	7,440	225
Cash and cash equivalents at end of year	312,315	223,382	7,440
Supplemental disclosure of cash flow information:
Cash paid for interest
Cash paid for taxes
Supplemental disclosure of noncash investing and financing activities:
Issuance of common stock for business combinations	352,887
Issuance of common stock to settle previously accrued executive compensation		175
Reclassification of deposits to property and equipment	46,711	1,449
Construction in progress included in accrued expenses	2,423
Cryptocurrencies received from sale of equipment		52
Conversion of preferred stock to common stock	11		47
Conversion of notes payable to common stock			10,226
Reclassification of warrant liability to equity			5,439
Common stock issued in connection with conversion of notes payable			255
Cryptocurrencies used to purchase miners			$ 99

Organization

Organization	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Note 1. Organization Nature of Operations: We are a vertically integrated Bitcoin mining and infrastructure development company principally engaged in enhancing our capabilities to mine Bitcoin. We also provide the critical mining infrastructure for our institutional scale clients to mine Bitcoin at our Bitcoin mining facility (the “Whinstone Facility”). Our Whinstone Facility is believed to be the largest Bitcoin mining facility, as measured by developed capacity, in North America. We operate in an environment which is consistently evolving based on the proliferation of Bitcoin and cryptocurrencies in general. A significant component of our strategy is to effectively and efficiently allocate capital between opportunities that generate the highest return on our capital. As described in “Note 18, Segment Information”, we operate in three business segments: (1) Mining, (2) Hosting, and (3) Engineering.

Liquidity and Financial Conditi

Liquidity and Financial Condition	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Liquidity and Financial Condition	Note 2. Liquidity and Financial Condition The Company has experienced historical losses and negative cash flows from operations. At December 31, 2021, the Company had approximate balances of cash and cash equivalents of $312.3 million, working capital of $463.7 million, total stockholders’ equity of $1.4 billion and an accumulated deficit of $237.8 million. To date, the Company has, in large part, relied on equity financings to fund its operations. The Company believes its current cash on hand is sufficient to meet its operating and capital requirements for at least the next year from the date these financial statements are issued. During the year ended December 31, 2021, the Company paid approximately $274.8 million as deposits primarily for miners and as of December 31, 2021, reclassified $46.7 million to property and equipment in connection with the receipt of 23,864 miners received at the Coinmint Facility or the Whinstone Facility. As of December 31, 2021, approximately $301.3 million remains payable to Bitmain in installments in advance of shipment of additional miners, which is scheduled to occur on a monthly basis through December 2022. 2021 ATM Offering As disclosed in Note 12, “Stockholders’ Equity”, the Company entered into a Sales Agreement with Cantor Fitzgerald & Co., B. Riley FBR, Inc., BTIG, LLC, Compass Point Research & Trading, LLC and Roth Capital Partners, LLC (the “Sales Agents”) dated August 31, 2021 (the “Sales Agreement”), pursuant to which the Company may, from time to time, sell up to $600 million in shares of the Company’s common stock through the Sales Agents, acting as the Company’s sales agent and/or principal, in a continuous at-the-market offering (the “2021 ATM Offering”). The Company paid the Sales Agents a commission of up to 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 19,910,589 shares of common stock under the Sales Agreement of approximately $587.2 million (after deducting $12.8 million in commissions and expenses) at a weighted average price of $29.53 from August 31, 2021 to December 31, 2021. With the sale and issuance of these shares, all $600 million in shares of the Company’s common stock registered under the December 2021 Registration Statement had been issued and the Company completed the 2021 ATM Offering. COVID-19: The COVID-19 global pandemic has been unprecedented and unpredictable and its impact is likely to continue to result in significant national and global economic disruption, which may adversely affect our business. Although the Company has experienced some changes to its miner shipments due to disruptions in the global supply chain, the Company however does not expect any material impact on its long-term strategic plans, its operations, or its liquidity due to the impacts of COVID-19. However, the Company is actively monitoring this situation and the possible effects on its financial condition, liquidity, operations, suppliers, and the industry.

Basis of Presentation, Summary

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2021
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 consolidated financial statements of the Company include the accounts of the Company and its wholly or majority owned and controlled subsidiaries. Consolidated subsidiaries results are included from the date the subsidiary was formed or acquired. Intercompany investments, balances and transactions have been eliminated in consolidation. Non–controlling interests represents the minority equity investment in the Company’s subsidiaries, plus the minority investors’ share of the net operating results and other components of equity relating to the non–controlling interest. The accompanying audited consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. They include the results of operations and financial condition of Whinstone beginning on May 26, 2021 and ESS Metron on December 1, 2021. See Note 4, “Acquisitions”, for additional information on our acquisitions of Whinstone and ESS Metron. All intercompany balances and transactions have been eliminated in consolidation. Amounts are in thousands except for share, per share and miner amounts. Use of estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“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 financial statements include estimates associated with valuing contingent consideration for a business combination and periodic reassessment of its fair value, allocating the fair value of purchase consideration to assets acquired and liabilities assumed in business acquisitions, revenue recognition, valuing the derivative asset classified under Level 3 fair value hierarchy, determining the useful lives and recoverability of long-lived assets, impairment analysis of goodwill and finite-lived intangibles, stock-based compensation, and the valuation allowance associated with the Company’s deferred tax assets. Reclassifications Certain prior period amounts have been reclassified to conform to the current period presentation. The reclassifications did not have a material impact on the Company’s consolidated financial statements and related disclosures. The impact on any prior period disclosures was immaterial. Cash and cash equivalents The Company considers all highly liquid investments with an original maturity of three months or less at the date of acquisition to be cash equivalents. From time to time, the Company’s cash account balances exceed the balances as covered by the Federal Deposit Insurance System. The Company has never suffered a loss due to such excess balances. As of December 31, 2021 and 2020, the Company had no cash equivalents. F-9 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Accounts Receivable, net The Company’s accounts receivable balance consists of amounts due from its hosting and engineering customers. The Company records accounts receivable at the invoiced amount less an allowance for any potentially uncollectable accounts under the current expected credit loss (“CECL”) impairment model under ASU 2016-13, Financial Instruments – Credit Losses (Topic 326), Measurement of Credit Losses on Financial Assets Allowance for credit losses are recorded as a direct reduction from an asset’s amortized cost basis. Credit losses and recoveries are recorded in selling, general and administrative expenses in the consolidated statements of operations. Recoveries of financial assets previously written off are recorded when received. For the years ended December 31, 2021, 2020 and 2019, the Company did not record any credit losses or recoveries. Based on the Company’s current and historical collection experience, management recorded an allowance for doubtful accounts of less than $0.1 million as of December 31, 2021. There were no accounts receivable as of December 31, 2020. No individual customer accounted for more than 7.5% of revenue for the year ended December 31, 2021. As of December 31, 2021, seven customers accounted for more than 83% of accounts receivable. Long-term investments Effective January 1, 2018, the Company adopted Accounting Standards Update (“ASU”) 2016-01 and related ASU 2018-03 concerning recognition and measurement of financial assets and financial liabilities. In adopting this new guidance, the Company has made an accounting policy election to adopt an adjusted cost method measurement alternative for investments in equity securities without readily determinable fair values. For equity investments that are accounted for using the measurement alternative, the Company initially records equity investments at cost but is required to adjust the carrying value of such equity investments through earnings when there is an observable transaction involving the same or a similar investment with the same issuer or upon an impairment. Revenue recognition Mining The Company recognizes revenue under ASC 606, Revenue from Contracts with Customers. • Step 1: Identify the contract with the customer   • Step 2: Identify the performance obligations in the contract   • Step 3: Determine the transaction price   • Step 4: Allocate the transaction price to the performance obligations in the contract   • Step 5: Recognize revenue when the Company satisfies a performance obligation    In order to identify the performance obligations in a contract with a customer, a company must assess the promised goods or services in the contract and identify each promised good or service that is distinct. A performance obligation meets ASC 606’s definition of a “distinct” good or service (or bundle of goods or services) if both of the following criteria are met: The customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract). If a good or service is not distinct, the good or service is combined with other promised goods or services until a bundle of goods or services is identified that is distinct. F-10 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer. The consideration promised in a contract with a customer may include fixed amounts, variable amounts, or both. When determining the transaction price, an entity must consider the effects of all of the following: • Variable consideration   • Constraining estimates of variable consideration   • The existence of a significant financing component in the contract   • Noncash consideration   • Consideration payable to a customer   Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The transaction price is allocated to each performance obligation on a relative standalone selling price basis. The transaction price allocated to each performance obligation is recognized when that performance obligation is satisfied, at a point in time or over time as appropriate. The Company has entered into digital asset mining pools by executing contracts, as amended from time to time, currently with one mining pool operator, with the mining pool operators to provide computing power to the mining pool. The contracts are terminable at any time by either party and the Company’s enforceable right to compensation only begins when the Company provides computing power to the mining pool operator. In exchange for providing computing power, the Company is entitled to a fractional share of the fixed cryptocurrency award the mining pool operator receives (less digital asset transaction fees to the mining pool operator which are immaterial and are recorded as a deduction from revenue), for successfully adding a block to the blockchain. The terms of the agreement provide that neither party can dispute settlement terms after thirty-five days following settlement. The Company’s fractional share is based on the proportion of computing power the Company contributed to the mining pool operator to the total computing power contributed by all mining pool participants in solving the current algorithm. Providing computing power in digital asset transaction verification services is an output of the Company’s ordinary activities. The provision of providing such computing power is the only performance obligation in the Company’s contracts with mining pool operators. The transaction consideration the Company receives, if any, is noncash consideration, which the Company measures at fair value on the date received, which is not materially different than the fair value at contract inception or the time the Company has earned the award from the pools. The consideration is all variable. Because it is not probable that a significant reversal of cumulative revenue will not occur, the consideration is constrained until the mining pool operator successfully places a block (by being the first to solve an algorithm) and the Company receives confirmation of the consideration it will receive, at which time revenue is recognized. There is no significant financing component in these transactions. Fair value of the cryptocurrency award received is determined using the quoted price of the related cryptocurrency at the time of receipt. Hosting In general, we provide power for our data center customers on a variable (sub-metered) basis. A customer pays us variable monthly fees for the specific amount of power utilized at rates specified in each contract, subject to certain minimums. We recognize variable power revenue each month as the uncertainty related to the consideration is resolved, power is provided to our customers, and our customers utilize the power (the customer simultaneously receives and consumes the benefits of the Company’s performance). F-11 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) We have determined that our contracts contain a series of performance obligations which qualify to be recognized under a practical expedient available known as the “right to invoice.” This determination allows variable consideration in such contracts to be allocated to and recognized in the period to which the consideration relates, which is typically the period in which it is billed, rather than requiring estimation of variable consideration at the inception of the contract. We have also determined that the contracts contain a significant financing component because the timing of revenue recognition differs from the timing of invoicing by a period, exceeding one year. The Company also installs certain hosted customers’ mining equipment and bills the customer at a fixed fee per piece of equipment or at an hourly rate. Revenue is recognized upon completion of the installation. We generate engineering and construction services revenue from the fabrication and deployment of immersion cooling technology for Bitcoin mining customers. We bill the customer at a fixed monthly fee or at an hourly rate. For the construction of customer-owned equipment, revenue is recognized upon completion of each phase of the construction project, as defined in each contract. For construction of assets owned by Whinstone but paid for and used by the customer during the term of their hosting contract, revenue is recognized on a straight-line basis over the remaining life of the contract. Maintenance services include cleaning, cabling and other services to maintain the customers’ equipment. We bill the customer at a fixed monthly fee or at an hourly rate. Revenue is recognized as these services are provided. Deferred revenue is primarily from advance payments received and is recognized on a straight-line basis over the remaining life of the contract or upon completion of the installation of the customers’ equipment. Our primary hosting contracts contain Service Level Agreement clauses, which guarantee a certain percentage of time the power will be available to our customer. In the rare case that we may incur penalties under these clauses, we account for payments made to customers in accordance with ASC 606-10-32-25, Consideration Payable to a Customer Engineering Substantially all revenue is derived from the sale of custom products built to customers’ specifications under fixed-price contracts with one identified performance obligation. Revenues are recognized over time as performance creates or enhances an asset with no alternative use, and for which the Company has an enforceable right to receive compensation as defined under the contract. To determine the amount of revenue to recognize over time, the Company utilizes the cost-to-cost method as management believes cost incurred best represents the amount of work completed and remaining on projects. As the cost-to-cost method is driven by incurred cost, the Company calculates the percentage of completion by dividing costs incurred to date by the total estimated cost. The percentage of completion is then multiplied by estimated revenues to determine inception-to-date revenue. Approved changes to design plans are generally recognized as a cumulative adjustment to the percentage of completion calculation. Revenue recognized for the period is the current inception-to-date recognized revenue less the prior period inception-to-date recognized revenue. If a contract is projected to result in a loss, the entire contract loss is recognized in the period when the loss was first determined, and any additional losses incurred subsequently are recognized in the subsequent reporting periods as they are identified. Additionally, contract costs incurred to date and expected total contract costs are continuously monitored during the term of the contract. F-12 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Changes in the job performance, job conditions and final contract settlements are factors that influence management’s assessment of total contract value and the total estimated costs to complete those contracts, and therefore, profit and revenue recognition. Any costs to obtain a contract are not material to the Company’s financial statements and would be expensed as incurred. Because of the inherent uncertainties in estimating costs, it is at least reasonably possible that the estimates used will change within the near term. The length of time for the Company to complete a custom product varies but is typically between four to 12 weeks. Customers are typically required to make periodic progress payments to the Company based on contractually agreed-upon milestones. Invoices are due net, 30 days, and retainage, if any, is generally due 30 days after delivery. Taxes collected from customers and remitted to governmental authorities are excluded from revenue. Shipping and handling costs are treated as fulfillment costs and are included in cost of sales. Other Revenue Other revenue is revenue recognized from an upfront license fee generated from our legacy animal health business. The upfront fee was recorded as deferred revenue and is being amortized into revenue over the term of the License Agreement. Derivative Accounting Power Supply Contract and Demand Response Services In May 2020, Whinstone entered into a Power Supply Agreement with TXU Energy Retail Company LLC (“TXU”) to provide the delivery of a fixed amount of electricity by TXU to Whinstone (via the facility owned by Oncor Electric Delivery Company, LLC (“Oncor”)) for a fixed price through April 30, 2030. The Power Supply Agreement provides a consistent and sufficient supply of electricity at the Whinstone Facility. If Whinstone uses more electricity than contracted, the cost of the excess is incurred at the current spot rate. Concurrently, Whinstone entered into a contract with Oncor for the extension of delivery system transmission/substation facilities to facilitate delivery of the electricity to the Whinstone Facility (the “Facilities Agreement”). Power costs incurred under this contract are determined on an hourly basis using settlement information provided by the Electric Reliability Council of Texas (“ERCOT”) and are recorded in cost of revenues - data center hosting in the consolidated statements of operations. The demand response services program (“Demand Response Service”) provides the ERCOT market with valuable reliability and economic services by helping to preserve system reliability, enhancing competition, mitigating price spikes, and encouraging the demand side of the market to respond better to wholesale price signals. In collaboration with market participants such as the Company, ERCOT has developed demand response products and services for customers that have the ability to reduce or modify electricity use in response to instructions or signals. Market participants with electrical loads like Whinstone may participate in the Demand Response Service program directly by offering their electrical loads into the ERCOT markets, or indirectly by voluntarily reducing their energy usage in response to increasing wholesale prices. Depending on the spot market price of electricity, under this program, we opportunistically sell electricity back to ERCOT in exchange for cash payments, rather than providing the power to our customers during these peak times in order to most efficiently manage our operating costs. We sold approximately $6.5 million in electricity back to ERCOT during the period from May 26, 2021 (the “Acquisition Date”) through December 31, 2021. These sales back to ERCOT are recorded as part of the change in fair value of derivative asset in the consolidated statements of operations. While we manage operating costs at the Whinstone Facility in part by periodically selling unused or uneconomical power in the market back to ERCOT, we do not consider such actions trading activities. That is, we do not engage in speculation in the power market as part of our ordinary activities. Because the Demand Response Services programs allow for net settlement, we have determined the Power Supply Agreement meets the definition of a derivative under ASC 815, Derivatives and Hedging, F-13 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) In February 2021, the State of Texas experienced an extreme and unprecedented winter weather event that resulted in prolonged freezing temperatures and caused an electricity generation shortage that was severely disruptive to the whole state. While demand for electricity reached extraordinary levels due to the extreme cold, the supply of electricity significantly decreased in part because of the inability of certain power generation facilities to supply electric power to the grid. Due to the extreme market price of electricity during this time, at the request of ERCOT, Whinstone stopped supplying power to its customers and instead sold power back to the grid. In April 2021, under the provisions of the TXU Power Supply Agreement, and as a result of the weather event, Whinstone entered into a Qualified Scheduling Entity (“QSE”) Letter Agreement, which resulted in Whinstone being entitled to receive approximately $125.1 million for its power sales during the February winter storm, all under the terms and conditions of the QSE Letter Agreement. Whinstone received cash of $29.0 million in April 2021 (after deducting $10.0 million in power management fees owed by Whinstone), approximately $59.7 million is scheduled to be credited against future power bills of Whinstone beginning in 2022 and the remaining $26.3 million is contingent upon ERCOT’s future remittance. These amounts are gross before fair value adjustments and expenses incurred by Whinstone for power management fees noted above and customer settlements. The fair value of the settlement agreement was estimated and recognized as an asset as part of acquisition accounting. Additionally, pursuant to the Northern Data stock purchase agreement, the Company agreed to pay Seller additional consideration in cash in the amount of the future power credits, net of income taxes, when and if realized by Whinstone. See Note 4, “Acquisitions”. Fair Value Measurement The Company follows the accounting guidance in ASC 820, Fair Value Measurement, The accounting guidance requires fair value measurements be classified and disclosed in one of the following three categories: Level 1: Quoted prices in active markets for identical assets or liabilities. Level 2: Observable inputs other than Level 1 prices, for similar assets or liabilities that are directly or indirectly observable in the marketplace. Level 3: Unobservable inputs which are supported by little or no market activity and that are financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant judgment or estimation. The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s derivative asset related to its Power Supply Agreement is classified within Level 3 of the fair value hierarchy because the fair value is estimated by utilizing valuation models and significant unobservable inputs. The Company’s only financial liability based on Level 3 inputs is a contingent consideration arrangement related to its acquisition of Whinstone. The Company is contractually obligated to pay contingent consideration payments to the Seller if Whinstone realizes certain power credits. (See Note 14, “Fair Value Measurement”) The Company will update its assumptions each reporting period based on new developments and record such amounts at fair value based on the revised assumptions until the agreements expire or contingency is resolved, as applicable. As of December 31, 2020, there were no financial assets or liabilities measured at fair value. F-14 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Property and Equipment Property and equipment is stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets. Estimated useful lives for leasehold improvements are typically the lesser of the estimated useful life of the asset or the life of the term of the lease. The estimated useful lives for all other property and equipment are as follows: Life (Years) Buildings and improvements 10-25 Miners and mining equipment 2 Machinery and facility equipment 5-7 Office and computer equipment 3 Goodwill and Other Intangible Assets The Company accounts for intangible assets under ASC 350-30, Intangibles – Goodwill and Other Intangible assets with finite lives are comprised of customer contracts, trademarks, UL Listings and patents that are amortized on a straight-line basis over their expected useful lives, which is their contractual term or estimated useful life. Patents costs consisting of filing and legal fees incurred are initially recorded at cost. Certain patents are in the legal application process and therefore are not currently being amortized. The Company performs assessments to determine whether finite-lived classification is still appropriate at least annually. The carrying value of finite-lived assets and their remaining useful lives are also reviewed at least annually to determine if circumstances exist which may indicate a potential impairment or revision to the amortization period. A finite-lived intangible asset is considered to be impaired if its carrying value exceeds the estimated future undiscounted cash flows to be derived from it. We exercise judgment in selecting the assumptions used in the estimated future undiscounted cash flows analysis. Impairment is measured by the amount that the carrying value exceeds fair value. F-15 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The use of different estimates or assumptions could result in significantly different fair values for our reporting units and intangible assets. As of December 31, 2021, the carrying amounts and estimated lives of the Company’s intangible assets with finite lives were as follows: ($ in thousands) Gross book value Accumulated amortization Net book value Weighted-average life (years) Customer contracts $ 6,300 $ (51 ) $ 6,249 10 Trademark 5,000 (42 ) 4,958 10 UL Listings 2,700 (19 ) 2,681 12 Patents 742 (468 ) 274 Various Finite-lived intangible assets $ 14,742 $ (580 ) $ 14,162 As of December 31, 2020, the carrying amounts of the Company’s intangible assets with finite lives were as follows: Gross book value Accumulated amortization Net book value Patents $ 713 $ (377 ) $ 336 The following table represents the total estimated amortization of intangible assets for the five succeeding years: For the years ending December 31, Estimated amortization expense 2022 $ 1,446 2023 1,446 2024 1,446 2025 1,446 2026 1,446 Thereafter 6,932 Total $ 14,162 We did not identify any impairment of our Goodwill and Other Intangible Assets during the years ended December 31, 2021, 2020 and 2019 other than our cryptocurrencies discussed below. Cryptocurrencies Cryptocurrencies, (including Bitcoin and Bitcoin cash) are included in current assets in the accompanying consolidated balance sheets. Cryptocurrencies purchased are recorded at cost and cryptocurrencies awarded to the Company through its mining activities are accounted for in connection with the Company’s revenue recognition policy disclosed above. Cryptocurrencies held are accounted for as intangible assets with indefinite useful lives. An intangible asset with an indefinite useful life is not amortized but assessed for impairment annually, or more frequently, when events or changes in circumstances occur indicating that it is more likely than not that the indefinite-lived asset is impaired. Impairment exists when the carrying amount exceeds its fair value, which is measured using the quoted price of the cryptocurrency at the time its fair value is being measured. In testing for impairment, the Company has the option to first perform a qualitative assessment to determine whether it is more likely than not that an impairment exists. If it is determined that it is not more likely than not that an impairment exists, a quantitative impairment test is not necessary. If the Company concludes otherwise, it is required to perform a quantitative impairment test. To the extent an impairment loss is recognized, the loss establishes the new cost basis of the asset. Subsequent reversal of impairment losses is not permitted. During 2021, 2020 and 2019, the Company recorded impairment charges on its cryptocurrency holdings of $36.5 million, $1.0 million and $0.8 million, respectively. Purchases of cryptocurrencies by the Company are included within investing activities in the accompanying consolidated statements of cash flows, while cryptocurrencies awarded to the Company through its mining activities are included within operating activities in the accompanying consolidated statements of cash flows. The sales of cryptocurrencies are included within investing activities in the accompanying consolidated statements of cash flows and any realized gains or losses from such sales are included in other income (expense) in the consolidated statements of operations. The Company accounts for its gains or losses in accordance with the first in first out (FIFO) method of accounting. Impairment of long-lived assets Management reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to undiscounted future cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. During the year ended December 31, 2020, the Company determined there were indicators that would cause a 100% impairment of its Coinsquare investment and observed price changes. Therefore, the Company recorded an impairment expense of $9.4 million for its investment in Coinsquare during the year ended December 31, 2020. F-16 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Business Combinations The Company applies the provisions of ASC Topic 805, Business Combinations While we use our best estimates and assumptions to accurately apply preliminary values to assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, these estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, we record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of the assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded in the consolidated statements of operations. Accounting for business combinations requires management to make significant estimates and assumptions, especially at the acquisition date, including estimates for intangible assets, contractual obligations assumed, pre-acquisition contingencies, and contingent consideration, where applicable. Although we believe the assumptions and estimates we have made have been reasonable and appropriate, they are based in part on historical experience and information obtained from management of the acquired companies and are inherently uncertain. Critical estimates in valuing certain of the intangible assets we have acquired include; future expected cash flows from customer contracts, discount rates, and estimated market changes in the value of the Power Supply Agreement, which is accounted for as a nonhedged derivative contract. Unanticipated events and circumstances may occur that may affect the accuracy or validity of such assumptions, estimates, or actual results. Acquisition-related expenses are recognized separately from the business combination and are expensed as incurred. Investment in marketable equity securities Our investment in marketable equity securities consists entirely of common shares of Mogo, Inc. (NASDAQ: MOGO), resulting from the April and May 2021 transactions. (See Note 7, “Investments in Marketable Equity Securities”). The Company accounted for this investment in accordance with ASC 321, Investments-Equity Securities, Lease Accounting The Company accounts for its leases under ASC 842, Leases For leases with a term exceeding 12 months, a lease liability is recorded on the Company’s consolidated balance sheet at lease commencement reflecting the present value of its fixed minimum payment obligations over the lease term. A corresponding right-of

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Acquisitions	Note 4. Acquisitions Acquisition of ESS Metron On December 1, 2021, the Company acquired 100% of the equity interests of ESS Metron. ESS Metron is based in Denver, Colorado, operating from facilities totaling approximately 121,000 square feet. The facilities are subject to long-term lease agreements. The acquisition-date fair value of the total consideration transferred was comprised of $25 million of cash, adjusted for net working capital and other items, and 715,413 shares of the Company’s common stock, no par value, with a fair value of approximately $26.7 million. Of the 715,413 shares of common stock, 645,248 were issued upon closing, and the remaining 70,165 were withheld as security for the sellers’ indemnification obligations for 18 months following the transaction closing date. The ESS Metron Acquisition was accounted for using the acquisition method of accounting in accordance with ASC 805, which requires recognition of assets acquired and liabilities assumed at their respective fair values on the date of acquisition. As of December 31, 2021, the Company has completed a preliminary allocation of the purchase consideration. Therefore, the allocation of the purchase price to assets acquired and liabilities assumed is based on provisional estimates and is subject to continuing management analysis, with assistance from third party valuation advisors. The Company expects to finalize the valuation of these assets and liabilities, and consideration transferred, as soon as practicable, but not later than one year from the acquisition date. Any changes to the preliminary estimates of the fair value of the assets acquired and liabilities assumed will be recorded as adjustments to those assets and liabilities and residual amounts will be allocated to goodwill. During the period ended December 31, 2021, the Company continued reviewing its valuations of the assets acquired and liabilities assumed in the December 1, 2021 acquisition of ESS Metron based on new information obtained about facts and circumstances that existed as of the acquisition date. F-21 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Any necessary adjustments will be finalized within one year from the date of acquisition (in thousands): Cash and cash equivalents $ 549 Accounts receivable 9,879 Prepaid and other current assets 636 Inventory and work-in-progress 1,175 Costs and estimated earnings in excess of billings 13,205 Property and equipment 4,501 Intangible assets 14,000 Right of use asset 6,714 Accounts payable (9,235 ) Accrued expenses (1,239 ) Billings in excess of costs and estimated earnings (5,883 ) Operating lease liabilities (6,714 ) Warranty liability (116 ) Total identifiable assets and liabilities acquired 27,472 Goodwill 29,379 Total purchase consideration $ 56,851 The $56.9 million total purchase price consideration consisted of $26.7 million fair value of Riot common shares issued, a $30.1 million cash payment (net of $3.7 million of Seller transaction costs). Goodwill represents the excess of total purchase consideration over the preliminary fair value of the underlying assets acquired and liabilities assumed. Goodwill is attributable to the assembled workforce of experienced personnel at ESS Metron and synergies expected to be achieved from the combined operations of Riot and ESS Metron. The goodwill recognized is expected to be deductible for tax purposes. We assigned the goodwill to our Engineering segment. See Note 18, “Segment Information”. In accordance with ASC 815, the Company determined that the 70,165 shares withheld meet the conditions necessary to be classified as equity because the consideration is indexed to the Company’s own equity, there are no exercise contingencies based on an observable market not based on its stock or operations, settlement is consistent with a fixed-for-fixed equity instrument, the agreement contains an explicit number of shares and there are no cash payment provisions. Additionally, based on these assessments, the Company determined the shares be recorded at fair value on the acquisition date similar to escrowed shares or securities and accounted for them in total consideration transferred. This consideration relates to representations and warranties of circumstances that existed as of the acquisition date and which the Company believes to be accurate, with future issuance of the share consideration deemed likely to occur. The fair values of cash and cash equivalents, accounts receivable, prepaid and other current assets, inventory and work-in-progress, accounts payable, accrued expenses, and warranty liability were determined to be the carrying values due to the short-term nature of the assets and liabilities. The fair value of the acquired trade receivables was determined to be the net realizable amount of the closing date book value of $9.9 million. Contract assets consist of costs and estimated earnings in excess of billings on uncompleted contracts and unearned revenue consists of billings in excess of costs and estimated earnings on uncompleted contracts. The fair values of these assets and liabilities were determined to be the carrying values due to the short-term nature of the underlying project contracts incurring costs and the associated customer billings. The fair value of property and equipment was estimated by applying the cost approach. The cost approach uses the replacement or reproduction cost as an indicator of fair value. The assumptions of the cost approach include replacement cost new, projected capital expenditures, and physical deterioration factors including economic useful life, remaining useful life, age, and effective age. F-22 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Intangible assets reflect the identifiable intangible assets acquired, consisting of customer relationships, a trademark and UL Listings. Customer relationships are assigned an estimated useful life of approximately 10 years based on the low attrition of the customer base, in part due to the customized nature of the Company’s products. Fair value of the customer relationships was estimated by applying an income approach – multi period excess earnings method. The fair value was determined by calculating the present value of estimated future operating cash flows generated from the existing customers less costs to realize the revenue. The Company applied a discount rate of 21%, which reflected the nature of the assets as they relate to the risk and uncertainty of the estimated future operating cash flows. Other significant assumptions used to estimate the fair value of the customer contracts include an assumed income tax rate of 25%. Although ESS Metron has been in business for over 60 years, the trademark was only assigned a 10-year life due to the Company obtaining more data center customers where the longevity of the projects may be shorter than have been historically. Fair value of the trademark was estimated by applying the relief from royalty rate method. The fair value was determined by applying an estimated royalty rate to revenues, measuring the value the Company would pay in royalties to a market participant if it did not own the trademark and had to license it from a third party. UL Listings were assigned a 12-year life. A UL Listing means that UL, LLC has tested representative samples of a product and determined that the product meets specific, defined requirements. These requirements are often based on UL’s published and nationally recognized Standards for Safety. Although the UL Listing certifications do not expire, due to technological improvements in similar products, particularly in the data center industry, a 12-year life was assumed. Fair value of the UL Listings was estimated by applying an estimated developer’s profit margin of approximately 4.5% to estimated costs to be incurred over an estimated six months to re-acquire the UL Listings. The Company applied a discount rate of 15%, which reflected the short time necessary to re-acquire the asset. The right of use asset and operating lease liabilities consist of two operating leases of the manufacturing facility in Denver, CO. These leases have combined annual payments of approximately $0.9 million and have remaining lease terms of approximately 3.5 and 10 years. The operating results of ESS Metron have been included in the Company’s consolidated statements of operations since the acquisition date. During the year ended December 31, 2021, the Company recognized $2.1 million of acquisition-related costs that were expensed as incurred. The financial results of the acquisition have been included in the Company’s consolidated financial statements from the closing of the acquisition. From the December 1, 2021 acquisition date through December 31, 2021, ESS Metron’s total revenue and net income was approximately $4.2 million and $0.2 million, respectively. Acquisition of Whinstone On May 26, 2021, the Company acquired 100% of the equity interests of Whinstone US, Inc., the owner and operator of a Bitcoin mining and hosting facility, for approximately $460 million. The assets and operations of Whinstone increases the scale and scope of Riot’s operations, which is a foundational element in the Company’s strategy to become an industry-leading Bitcoin mining platform on a global scale. The acquisition-date fair value of the total consideration transferred was comprised of $80 million of cash, adjusted for net working capital and other items, and 11.8 million shares of the Company’s common stock, no par value, with a fair value of approximately $326 million. As part of cash at closing, net debt outstanding from Whinstone to its parent (Seller) totaling approximately $38 million was repaid as part of cash paid and certain seller transaction costs were paid. The Company also agreed to pay Seller up to approximately $86 million (undiscounted) in additional consideration if certain future power credits are realized by Whinstone. The purchase price was funded through a combination of existing cash and issuance of equity securities. F-23 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The Whinstone Acquisition was accounted for using the acquisition method of accounting in accordance with ASC 805, which requires recognition of assets acquired and liabilities assumed at their respective fair values on the date of acquisition. As of December 31, 2021, the Company has completed a preliminary allocation of the purchase consideration. Therefore, the allocation of the purchase price to assets acquired and liabilities assumed is based on provisional estimates and is subject to continuing management analysis, with assistance from third party valuation advisors. The Company expects to finalize the valuation of these assets and liabilities, and consideration transferred, as soon as practicable, but not later than one year from the Acquisition Date. Any changes to the preliminary estimates of the fair value of the assets acquired and liabilities assumed will be recorded as adjustments to those assets and liabilities and residual amounts will be allocated to goodwill. During the period ended December 31, 2021, the Company continued reviewing its valuations of the assets acquired and liabilities assumed in the May 26, 2021 acquisition of Whinstone based on new information obtained about facts and circumstances that existed as of the acquisition date. During the period May 26, 2021 through December 31, 2021, due to further analysis of the operating forecast used in the acquisition date valuation, the Company recorded preliminary measurement period adjustments of approximately $90.3 million to decrease the value of its customer relationship intangible assets, $37.8 million to decrease the value of its acquisition date deferred tax liabilities and $0.2 million to increase its acquisition date right of use asset, with the corresponding adjustments to goodwill. Any necessary adjustments will be finalized within one year from the date of acquisition ($ in thousands): Cash and cash equivalents $ 10,400 Accounts receivable 1,072 Prepaid expenses and other current assets 2,176 Property and equipment 78,207 Derivative asset 13,967 Right of use asset 6,547 Security deposits 1,775 Future power credits (1) 82,953 Accounts payable (12,853 ) Accrued expenses (504 ) Deferred revenues and customer deposits (34,856 ) Operating lease liabilities (8,184 ) Total identifiable assets and liabilities acquired 140,700 Goodwill (2) 319,684 Total purchase consideration $ 460,384 ​​ (1) Future power credits of $83.0 million are associated with the contingent purchase price payable. ​​ (2) Goodwill represents the excess of total purchase consideration over the preliminary fair value of the underlying assets acquired and liabilities assumed. Goodwill is attributable to the assembled workforce of experienced personnel at Whinstone and synergies expected to be achieved from the combined operations of Riot and Whinstone. None of the goodwill recognized is expected to be deductible for tax purposes. We assigned the goodwill to our Hosting segment. See Note 18, “Segment Information”. The $460.4 million total purchase price consideration consisted of $326.2 million fair value of Riot common shares issued, a $53.0 million cash payment (including $38.1 million of debt payoff and certain Seller transaction costs), an $83.0 million contingent purchase price payable to the Seller and other net items of $(1.7 million). F-24 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) As part of the share purchase agreement Riot entered into with the Seller in connection with the Whinstone Acquisition, Riot is obligated to Seller to pay up to a maximum amount of $86 million, net of income taxes as defined under the stock purchase agreement (undiscounted) of additional consideration if certain power credits are received or realized by Whinstone. Those power credits arose from the February 2021 weather event. The purchase price included the estimated fair value of the contingent consideration at the Whinstone Acquisition Date of approximately $83 million. The fair value measurement is based on significant inputs not observable in the market and thus represents a Level 3 measurement as defined in ASC 820. The significant assumptions used to estimate the fair value are described in Note 14, “Fair Value Measurements”. These assumptions for the power credits whose utilization by Whinstone is contingent on ERCOT’s future power billings, include the timing of receipt or realization of the power credits, estimates of future power consumption, the discount rate and credit risk of the Company and the owing party (ERCOT). The fair value of the acquired trade receivables was determined to be the net realizable amount of the closing date book value of $1.1 million. The fair value of the acquired long-term other asset of approximately $83 million relates to the estimated amount of power credits due Whinstone from the February 2021 weather event. We estimated the fair value of the power credits to be the same as that of the contingent consideration arrangement because the Company is required to remit to the Seller in cash as additional consideration the amount of such power credits received or realized by Whinstone. See discussion above on contingent consideration. The derivative asset acquired pertains to Whinstone’s Power Supply Agreement. Fair value of the contract of approximately $14 million was estimated by applying a discounted debt-free cash flow approach. This fair value measurement is based on significant inputs not observable in the market and thus represents a Level 3 measurement as defined in ASC 820. The significant assumptions used to estimate fair value of the derivative contract include a discount rate of 21%, which reflected the nature of the contract as it relates to the risk and uncertainty of the estimated future mark-to-market adjustments, forward price curves of the power supply, broker/dealer quotes and other similar data obtained from quoted market prices or independent pricing vendors. The fair value of property and equipment was estimated by applying the cost approach. The cost approach uses the replacement or reproduction cost as an indicator of fair value. The assumptions of the cost approach include replacement cost new, projected capital expenditures, and physical deterioration factors including economic useful life, remaining useful life, age, and effective age. The operating results of Whinstone have been included in the Company’s consolidated statements of operations since the Acquisition Date. During the year ended December 31, 2021, the Company recognized $19.1 million of acquisition-related costs that were expensed as incurred. The financial results of the acquisition have been included in the Company’s consolidated financial statements from the closing of the acquisition. From the May 26, 2021 acquisition date through December 31, 2021, Whinstone’s total revenue and net income was approximately $24.5 million and $1.2 million, respectively. F-25 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Pro Forma Information (Unaudited) The following unaudited pro forma financial information summarizes the combined results of operations for Riot, Whinstone and ESS Metron as if the companies were combined as of January 1, 2020. The unaudited pro forma information does not reflect the effect of costs or synergies that may result from the acquisition. The pro forma information excludes acquisition-related costs of $21.2 million during the year ended December 31, 2021. The pro forma information does not purport to be indicative of the results of operations that actually would have resulted had the combination occurred on January 1, 2020, or of future results of the consolidated entities. This unaudited pro forma information is presented for informational purposes only and is not necessarily indicative of future operating results of the combined company (in thousands). Years Ended December 31, 2021 2020 Total revenue $ 237,650 $ 73,608 Net loss $ 9,615 $ 51,890 Asset Purchase Agreement with Prive Technologies LLC On February 21, 2018, the Company and Kairos, completed an asset purchase under an agreement (the “Prive Purchase Agreement”) with Prive. Upon closing of the transaction, Kairos became the owner of Prive equipment used for the mining of cryptocurrency, including, but not limited to, 3,800 Bitmain Antminer S9s. The equipment was recorded for a purchase price of approximately $19.5 million as follows (in thousands): Cash consideration $ 11,000 Fair value of common stock 8,480 Other expenses 2 Total $ 19,482 As part of the Prive Purchase Agreement, 200,000 shares of the Company’s common stock were held in escrow (the “Escrow Shares”). No value was assigned to the Escrow Shares at the time of the acquisition as they were contingent consideration. The Escrow Shares would have been released to the Sellers upon the Company generating net cash flow of at least $10.0 million from the equipment. If the Escrow Shares were not released to the Sellers on or before the two-year anniversary (February 2020) of the Prive Purchase Agreement, the Escrow Shares would be returned to the Company for cancellation. In February 2020, the conditions were not achieved and after receiving notification on March 4, 2020, the escrow agent returned and canceled the 200,000 shares. Acquisition of Logical Brokerage Corp. On March 26, 2018, the Company entered into an asset acquisition with Logical Brokerage Corp. The Company purchased 9.25 shares of Logical Brokerage, representing 92.5% of the outstanding capital stock of Logical Brokerage, for a cash purchase price of $0.6 million. Logical Brokerage, a futures introducing broker headquartered in Miami, Florida is registered with the CFTC and is a member of the NFA. The asset was recorded at the purchase price of $0.6 million, net of cash received with the asset acquisition of $0.1 million, plus any transaction costs. The CFTC license was recorded as intangible rights acquired. The Company made the decision, effective as of December 31, 2019 not to pursue its RiotX / Logical Brokerage business development plan. Under the guidance of ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity

Revenue from Contracts with Cus

Revenue from Contracts with Customers	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Note 5. Revenue from Contracts with Customers We recognize revenue when we transfer promised services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those services. Disaggregated revenue The following table presents the Company’s revenues disaggregated into categories based on the nature of such revenues (in thousands): Schedule of Disaggregated Revenue: Years Ended December 31, 2021 2020 2019 Mining $ 184,422 $ 11,984 $ 6,741 Hosting 24,546 - - Engineering 4,178 - - Other 97 97 96 Total revenue $ 213,243 $ 12,081 $ 6,837 Contract balances For the years ended December 31, 2021, 2020 and 2019, the Company did not recognize material bad-debt expense. Contract assets consist of costs and estimated earnings in excess of billings on uncompleted engineering contracts. The balance was entirely from the ESS Metron acquisition and was $9.9 million and $0 as of December 31, 2021 and 2020, respectively. The Company’s contract liabilities primarily relate to upfront payments and consideration received from customers for data center hosting, billings in excess of costs and estimated earnings on uncompleted engineering contracts and the upfront license fee generated from our legacy animal health business. The table below presents changes in the total deferred revenue liability, for the years ended December 31, 2021 and 2020 (in thousands): Years Ended December 31, 2021 2020 Beginning balance $ 776 $ 873 Acquired contract balances 34,424 - Revenue recognized from acquired contract balances (1,500 ) - Termination of an acquired customer contract (5,700 ) - Revenue recognized that was included in the beginning balance (97 ) (97 ) Ending balance $ 27,903 $ 776 F-27 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Transaction price allocated to remaining performance obligations Remaining performance obligations represent the transaction price of contracts for work that has not yet been performed. Amounts related to cryptocurrency mining are not included because the Company elected the practical expedient to not disclose amounts related to contracts with a duration of one year or less. Hosting and Engineering revenue – remaining performance obligation The table below presents estimated revenue expected to be recognized in the future related to the unsatisfied portion of the performance obligation at December 31, 2021 (in thousands): (in thousands) 2022 2023 2024 2025 Thereafter Total Hosting (1) 3,414 3,414 3,414 3,414 8,304 21,960 Engineering 5,264 - - - - 5,264 Total contract liabilities (2) $ 8,678 $ 3,414 $ 3,414 $ 3,414 $ 8,304 $ 27,224 ​(1) Data center hosting revenue primarily includes upfront payments which the Company generally recognizes as services are provided. ​(2) The Company elected the “right to invoice” practical expedient and therefore does not include amounts related to (1) the satisfaction of performance obligations recognized in the amount invoiced, and (2) variable consideration related to future services. Other revenue – remaining performance obligation As of December 31, 2021 and 2020, the aggregate amount remaining of the upfront license fee, for the right to access certain intellectual property relating to the Company’s Animal Health assets, was approximately $0.7 million and $0.8 million, respectively. The fee is being recognized ratably over the license term, which ends in 2028. Additionally, we have elected to use the practical expedient to not adjust the transaction price for the existence of a significant financing component if the timing difference between a customer’s payment and our performance is one year or less.

Cryptocurrencies

Cryptocurrencies	12 Months Ended
	Dec. 31, 2021
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Cryptocurrencies	Note 6. Cryptocurrencies The following table presents information about our cryptocurrencies (Bitcoin): December 31, 2021 December 31, 2020 Beginning balance $ 11,626 $ 3,839 Revenue recognized from cryptocurrencies mined 184,422 11,838 Proceeds from sale of cryptocurrencies (295 ) (8,298 ) Realized gain on sale/exchange of cryptocurrencies 253 5,184 Impairment of cryptocurrencies (36,462 ) (989 ) Cryptocurrencies received from sale of equipment - 52 Ending balance $ 159,544 $ 11,626 During 2021, all cryptocurrency activity was from Bitcoin. During 2020, all but less than $0.1 million was from Bitcoin. During 2021, 2020 and 2019, the Company recorded impairment charges on its cryptocurrency holdings of $36.5 million, $1.0 million and $0.8 million, respectively.

Investments in Marketable Equit

Investments in Marketable Equity Securities and Long-term Investments	12 Months Ended
	Dec. 31, 2021
Investments, All Other Investments [Abstract]
Investments in Marketable Equity Securities and Long-term Investments	Note 7. Investments in Marketable Equity Securities and Long-term Investments Investments in Marketable Equity Securities Coinsquare and Mogo In September 2017, and February 2018, the Company acquired a minority interest for $9.4 million in Coinsquare, which operates a digital crypto currency exchange platform in Canada. The investment resulted in an ownership in Coinsquare by the Company of approximately 11.7% ownership in Coinsquare on a fully diluted basis. The Company evaluated the guidance in ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities During June 2020, the Company became aware of allegations brought by the Ontario Securities Commission (the “OSC”) that Coinsquare and certain of its executives and directors engaged in systematic “wash trading” of cryptocurrencies on its Coinsquare market to manipulate the market’s trading volume during 2018 and 2019. On July 21, 2020, a hearing panel of the OSC entered an order (the “Order”) approving the settlement agreement between OSC, Coinsquare, and certain of its executives and directors (the “Settlement Agreement”), in which they admitted to breaches of Ontario securities laws and/or conduct contrary to the public interest including, market manipulation through reporting inflated trading volumes on its Coinsquare Market, misleading its clients and investors about these trading volumes, and taking reprisal against an internal whistleblower who brought this conduct to the attention of the named executives and directors. The Order requires certain oversight and governance procedures and to prohibit the named executives and directors from engaging in certain activities with respect to Coinsquare; additionally, the named executives and directors were required to resign from Coinsquare and Coinsquare and the named executives and directors were required to pay penalties and costs totaling approximately CAD 2.2 million. F-29 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The Company thereupon determined there were indicators that would cause a 100% impairment of the Coinsquare investment and observed price changes, which was recorded as of June 30, 2020. The Company therefore recorded an impairment expense of $9.4 million for its investment in Coinsquare during the year ended December 31, 2020, as reflected in the accompanying consolidated statements of operations. During the year ended December 31, 2021, under agreements generally between Coinsquare, Coinsquare’s shareholders (including Riot) and Mogo Inc. (NASDAQ: MOGO) (“Mogo Agreement”), a digital payments and financial technology company (“Mogo”), Riot sold its 3.4 million common shares of Coinsquare (the “Coinsquare Shares”) in exchange for approximately 3.2 million common shares of Mogo (the “Mogo Shares”) and approximately US $1.8 million in cash. During the year ended December 31, 2021, the Company recorded a gain on sale/exchange of long-term investments of $26.3 million for the sale of its shares of Coinsquare. Concurrently, in accordance with ASC 321, we recorded the fair value of the MOGO shares, received in the exchange of $24.8 million in investments in marketable equity securities within current assets on our consolidated balance sheets. The fair value was calculated as 3.2 million shares of Mogo common stock multiplied by the fair value of the Mogo shares received. During the year ended December 31, 2021, we recorded an unrealized loss on the shares of approximately $13.7 million based on the closing price per share of Mogo common stock on NASDAQ on December 31, 2021 of $3.42. The daily share price is extremely volatile and may be more or less than the amount recorded as of December 31, 2021. Long-term Investments Tess In 2017, the Company acquired approximately 52% of Tess which is developing blockchain solutions for telecommunications companies. Under the terms of the Purchase Agreement (the “Purchase Agreement”) the Company invested cash of approximately $0.3 million in Tess and issued 75,000 shares of restricted Common Stock to Tess in exchange for 2,708,333 shares of common stock of Tess. The 75,000 shares of Common Stock were valued at the $8.49 market price as of October 20, 2017 for a total of approximately $0.6 million. Accordingly, Tess became a majority-owned subsidiary of the Company. As part of the transaction, the Company and Tess entered into a registration rights agreement pursuant to which the Company agreed to file a registration statement to register the resale of 25,000 shares (of 75,000 shares) of Common Stock issued to Tess. The 2017 acquisition of Tess was accounted for as a business combination in accordance with the provisions of ASC 805. The allocation of purchase consideration includes $0.7 million as in-process research and development (IPR&D) related to the TessPay project. As of December 31, 2018, the Company had $0.6 million of intangibles related to Tess’s internal technology platform. In January 2018, following the execution of a non-binding letter of intent as of December 11, 2017, the parties executed a definitive agreement providing that Tess agreed to merge with Cresval Capital Corp. (“Cresval”) (TSX-V: CRV). Assuming closing conditions are met, upon closing of the anticipated merger, Tess would be publicly traded on the TSX Venture Exchange (the “TSXV”). During the year ended December 31, 2018, Tess received approximately $0.5 million from the sale of shares of Riot Blockchain common stock held by Tess, which has been recorded as a credit to the consolidated Common Stock of the Company. Additionally, Tess issued approximately 189,000 of its common shares in exchange for cash proceeds of approximately $220,000 thereby reducing the investment percentage held by the Company from 52.01% to 50.2% as of December 31, 2018. Due to the termination of the Cresval Agreement on February 15, 2019, the Company recorded an impairment loss of $2.1 million consisting of $0.7 million of in process research and development costs, $0.6 million related to capitalized costs of Tess’s internal technology platform and $0.8 million of goodwill during the year ended December 31, 2018. On April 10, 2019, Tess closed on a funding agreement under which approximately 23.8 million shares of Tess were issued for CAD $1.2 million. As a result of this and subsequent funding’s, the Company’s ownership in Tess was reduced to approximately 8.8%. Subsequently Tess was no longer being consolidated in the Company’s consolidated financial statements. F-30 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) As of December 31, 2019, the Company evaluated its remaining interest in Tess under the guidance of ASU 2016-01 and determined it should remeasure its retained interest at fair value upon deconsolidation to establish a new cost basis. As of December 31, 2021 and 2020, 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: 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 Verady During November 2017, the Company made a $0.2 million investment in a convertible note as part of a series of notes issued by Verady, LLC (“Verady”). The notes are unsecured, subordinated to other approved liabilities, mature December 31, 2022, bear interest at 6%, unless previously repaid or converted and contain other conditions and restrictions, all as defined under the subscription documents. The Verady convertible note was previously recorded at fair value (which approximates cost). The conversion rate of the convertible note is defined based upon the possible occurrence of certain defined events which may or may not occur. The Company has no other relationship or rights associated with Verady. Founded in 2016, Verady is privately held and recently launched VeraNet, a decentralized network of financial reporting and accounting tools targeted to the needs of the cryptocurrency community. During the year ended December 31, 2019, Verady completed a financing that under the terms of the Company’s original investment, resulted in the automatic conversion of the Company’s convertible note plus accrued interest totaling approximately $0.2 million, into equity of Verady. The 2019 automatic conversion resulted in an ownership in Verady by the Company of approximately 3.2% on a fully diluted basis. The Company has evaluated the guidance in ASU 2016-01 and elected to account for the investment using the measurement alternative as the equity securities are without a readily determinable fair value and do not give the Company significant influence over Verady. The investment is valued at cost, less any impairment, plus or minus changes resulting from observable price changes. During the year ended December 31, 2021 and 2020, there were no price changes in orderly transactions for identical or similar investments in Verady or Tess.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Note 8. Property and Equipment Property and equipment consisted of the following as of December 31, 2021 and 2020 (in thousands): Life (Years) December 31, 2021 December 31, 2020 Buildings and improvements 10-25 $ 78,548 $ - Miners and mining equipment 2 87,921 14,406 Machinery and facility equipment 5-7 12,373 - Office and computer equipment 3 1,007 83 Construction in progress 113,598 - Total cost of property and equipment 293,447 14,489 Less accumulated depreciation (30,467 ) (4,346 ) Property and equipment, net $ 262,980 $ 10,143 There were no impairment charges for the years ended December 31, 2021, 2020 and 2019. F-31 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) During 2021, we received 34,608 additional Antminer model S19-Pro miners related to its purchase contracts with Bitmain and, as of December 31, 2021, had deployed a total of 30,907 miners in its mining operation. Additionally, we entered into six additional purchase agreements with Bitmain to acquire 52,500 Antminer model S19j (90 Terahash per second) (“TH/s”) miners and 30,000 of their latest Antminer model S19XP (140 TH/s) miners for a combined total purchase price of approximately $535.0 million. Pursuant to these agreements, approximately $301.3 million remains payable to Bitmain in installments in advance of shipment of the miners, which is scheduled to occur on a monthly basis through December 2022. During the year ended December 31, 2020, the Company purchased 33,646 Bitmain S19-Pro Antminers and as of December 31, 2020 the Company had received 3,043 of the S19-Pro Antminers. In December 2020, the Company entered into a pilot project with a dual focus of evaluating next-generation immersion technology to increase mining productivity, in addition to evaluating software to reduce energy costs. These technologies have the potential to reduce the Company’s Bitcoin production costs, increase hash rate capacity and significantly extend the life of the Company’s Bitcoin mining ASICs. During June 2021, this pilot project had commenced full operation and the approximate $2.7 million in equipment costs for this project previously not yet operational and included in “Miners and mining equipment” in the table above, commenced being depreciated. Depreciation and amortization expense related to property and equipment totaled approximately $26.1 million, $4.3 million and $0.1 million, for the years ended December 31, 2021, 2020 and 2019, respectively. Depreciation is computed on the straight-line basis for the periods the assets are in service. Construction in progress: Upon completion of the Whinstone Acquisition, the Company commenced expansion of the Whinstone Facility from its existing 300 MW developed capacity to 700 MW. This expanded Bitcoin mining infrastructure is expected to comprise four new buildings totaling approximately 240,000 square feet, with the capacity to support an estimated 112,000 S19j Antminers based upon current configurations. It is expected that the first portion of this expansion will be completed by Q1 2022 and the balance during Q2 2022. Two of these four buildings are being developed utilizing air-cooling infrastructure, with the optionality to upgrade to immersion-cooling. The other two of these buildings are being developed utilizing immersion-cooling technology, a technique that offers improved cooling performance as compared to air-cooling infrastructure. The expansion of Bitcoin mining infrastructure at Whinstone provides critical capacity for Riot to deploy its future shipments of Bitcoin mining hardware, in addition to providing an opportunity to expand Whinstone’s hosting business for third-party Bitcoin miners. In November 2021, Riot’s 400 MW expansion at the Whinstone Facility hit multiple progress milestones while navigating the challenges with the current state of the global supply chain. Progress during the month included the completion of the substation expansion to 700 MW, successful installation of the substation busbar, and 400 MW of high-voltage transformers. Whinstone also completed construction of Building F, Riot’s first self-mining building dedicated to immersion-cooled Bitcoin mining, while also advancing on its second immersion-cooled dedicated building, Building G. In December 2021, Whinstone also received most of the structural components required for Buildings D, E, and G. The construction completion timeline is currently on-time, despite global supply chain shortages and delays. A hosting client with its miners in a portion of Building C has now filled the remainder of Building C with its miners. F-32 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Commitment: As of December 31, 2021, the Company had outstanding executed purchase agreements for the purchase of miners from Bitmain for a total of 30,495 new S19j-Pro model miners and 30,000 new S19XP model miners, scheduled to be delivered through December 2022, and had paid a deposit of 43% of the total purchase price. A summary of the purchase agreement commitments, deposits paid and expected delivery timing (remaining balances are payable in advance of shipping) is summarized as follows (in thousands): Agreement Date * Original Purchase Commitment Open Purchase Commitment Deposit Balance Expected Shipping April 5, 2021 $ 138,506 $ 52,838 $ 85,668 First Quarter 2022 - Fourth Quarter 2022 October 29, 2021 56,250 31,950 24,300 Second Quarter 2022 - Third Quarter 2022 November 22, 2021 32,550 21,158 11,392 Third Quarter 2022 - Fourth Quarter 2022 December 10, 2021 97,650 63,472 34,178 Third Quarter 2022 - Fourth Quarter 2022 December 24, 2021 202,860 131,859 71,001 Third Quarter 2022 - Fourth Quarter 2022 Total $ 527,816 $ 301,277 $ 226,539 * Pursuant to the Company’s agreements with Bitmain, the Company is responsible for all shipping charges incurred in connection with the delivery of the miners. The Company paid approximately $85.7 million as a deposit for the miners to be acquired under the purchase agreement, dated effective as of April 5, 2021, with Bitmain to acquire approximately 42,000 Antminer model S19j Miners, which are scheduled to be shipped in 12 batches of approximately 3,500 miners each, on a monthly basis, through October 2022. During the fourth quarter ended December 31 2021, the Company entered into purchase agreements with Bitmain to acquire 9,000 S19j Pro (100 TH/s) miners and 30,000 S19XP (140 TH/s) miners, for a total purchase price of approximately $389.3 million, with an anticipated delivery and deployment schedule set for April 2022 through December 2022.

Long-Term Assets

Long-Term Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Long-Term Assets	Note 9. Long-Term Assets Deposits Deposits consisted of the following as of December 31, 2021 and 2020 (in thousands): December 31, 2021 December 31, 2020 Deposits on equipment Beginning balance $ 33,093 $ 1,449 Additions 274,833 33,093 Reclassification to property and equipment (46,711 ) (1,449 ) Ending Balance 261,215 33,093 Security deposits 4,955 - $ 266,170 $ 33,093 F-33 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Deposits on Equipment During the year ended December 31, 2021, the Company paid approximately $274.8 million as deposits, primarily for miners, and, as of December 31, 2021, had reclassified $46.7 million to property and equipment in connection with the receipt of 23,864 miners at the Coinmint Facility and the Whinstone Facility. See Note 5, “Revenue from Contracts with Customers”. During the year ended December 31, 2020, the Company purchased 33,646 model S19, S19-Pro, and S19j-Pro Antminers from Bitmain for a total purchase price of approximately new miners totals $76.1 million, including $6.6 million paid for the 3,043 miners delivered during the year ended December 31, 2020, $31.9 million paid as deposits in deposits during the same period, and the remaining $37.6 million due to be paid during the year ending December 31, 2021. As of December 31, 2020, the Company had received 3,043 of the new miners, including all 1,040 model S19 miners and 2,003 model S19-Pro miners, but had not yet received 30,603 of the new miners, including 18,603 model S19-Pro miners and all 12,000 model S19j-Pro miners. The 30,603 were delivered in monthly shipments through January 2022. Accordingly, the Company recorded the $31.9 million paid during the year ended December 31, 2020 for these outstanding miners as a deposit, which includes these miners on the accompanying consolidated balance sheet. (See Note 7, “Investments in Marketable Equity Securities” for additional details.) During December 2019, the Company purchased 4,000 Bitmain model S17-Pro Antminers from Bitmain for approximately $6.3 million. The Company had received 3,000 of these model S17-Pro miners by December 31, 2019, and, accordingly, they were recorded as assets on the Company’s consolidated balance sheet for the year ended December 31, 2019. However, 1,000 of these S17-Pro miners were not received until February 2020. Therefore, as of December 31, 2019, the Company recorded the $1.4 million paid in advance for these 1,000 model S17-Pro miners as a deposit on the accompanying consolidated balance sheet. Security Deposits During the year ended December 31, 2021, the Company paid approximately $3.1 million in connection with an amended and restated Transmission/Substation Facility Extension Agreement for the construction of the Oncor-owned Delivery System facilities to serve the expansion of the Whinstone Facility. The deposit can be returned in two tranches: 1) upon verification by Oncor that the load demand meets or exceeds 394 MW, approximately $1.3 million can be returned, and 2) upon verification by Oncor that the load demand meets or exceeds 725 MW, the remaining $1.8 million can be returned. As of December 31, 2021, the Company has security deposits totaling approximately $5.0 million, including its ground lease of $1.8 million. Right of Use Assets See Note 11, “Leases”.

Accrued Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Accrued Expenses	Note 10. Accrued Expenses As of December 31, 2021 and 2020, the Company’s accrued expenses consisted of the following (in thousands): December 31, 2021 December 31, 2020 Construction in progress $ 12,110 $ - Payroll and payroll taxes 5,741 415 Insurance 2,507 - Other 1,713 1,167 Total accrued expenses $ 22,071 $ 1,582

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	Note 11. Leases At December 31, 2021, the Company had operating lease liabilities and right of use assets for its offices, manufacturing facilities of ESS Metron, and a ground lease at the Whinstone Facility that expires in December 2030, inclusive of extension options the Company is reasonably certain will be exercised. At December 31, 2020, the Company did not have any significant operating lease balances. In November 2021, the Company entered into a lease termination agreement with the landlord of certain Whinstone abandoned leases for approximately $0.9 million. After eliminating the associated operating lease liabilities, we recognized other income of approximately $0.7 million during the year ended December 31, 2021. Rental expense for lease payments related to the Company’s operating leases is recognized on a straight-line basis over the remaining lease term. The Company currently does not hold any finance leases. The Company elected to use the practical expedient of not separating lease components for its real estate leases. The Company has elected the short-term lease exception provided, and therefore only recognizes right of use assets and lease liabilities for leases with a term greater than one year. Leases qualifying for the short-term lease exception were insignificant. As of December 31, 2021 and 2020, the right of use assets were $13.2 million and zero, respectively, and the operating lease liabilities were $13.4 million and zero, respectively, in the accompanying consolidated balance sheets related to our ground lease and office leases. Operating lease right of use assets are included within long-term assets on the consolidated balance sheets. The calculation of the right of use assets and lease liabilities include minimum lease payments over the remaining lease term. Variable lease payments are excluded from the amounts and are recognized in earnings in the period in which the obligation for those payments is incurred. To determine the present value of future minimum lease payments, the Company utilized its incremental borrowing rate adjusted for the remaining lease term and the form of underlying collateral. The discount rate implicit in the leases was not readily determinable. F-35 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The following summarizes quantitative information about the Company’s operating leases (dollars in thousands): Years Ended December 31, Lease cost 2021 2020 2019 Operating lease cost $ 678 $ 1,240 $ 2,378 Variable lease cost (1) 51 1,040 3,200 Operating lease expense 729 2,280 5,578 Short-term lease rent expense 19 20 17 Total rent expense $ 748 $ 2,300 $ 5,595 ​ (1) Amounts primarily include common area maintenance and utility charges not included in the measurement of right of use assets and operating lease liabilities. Other information Operating cash flows from operating leases $ 435 $ 1,207 $ 2,377 Right of use assets exchanged for new operating lease liabilities $ 13,622 $ - $ 2,664 Weighted-average remaining lease term – operating leases 8.6 - 0.5 Weighted-average discount rate – operating leases 5.8 % - 10 % F-36 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The following table represents our future minimum operating lease payments as of, and subsequent to, December 31, 2021 under ASC 842 (in thousands): Ground lease Office and other leases Total 2022 $ 942 $ 990 $ 1,932 2023 970 1,012 1,982 2024 999 1,001 2,000 2025 1,029 908 1,937 2026 1,060 823 1,883 Thereafter 3,374 4,060 7,434 Total undiscounted lease payments 8,374 8,794 17,168 Less present value discount (2,164 ) (1,565 ) (3,729 ) Present value of lease liabilities $ 6,210 $ 7,229 $ 13,439

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Stockholders' Equity	Note 12. Stockholders’ Equity Preferred Stock 0% Series B Convertible Preferred Stock On November 3, 2017, the Company designated 1,750,001 shares of preferred stock as “0% Series B Convertible Preferred Stock” pursuant to the Certificate of Designation filed with the Secretary of State of the State of Nevada. The shares of 0% Series B Convertible Preferred Stock are non-voting and convertible into shares of common stock based on a conversion calculation equal to the stated value of the 0% Series B Convertible Preferred Stock, plus all accrued and unpaid dividends, if any, on such 0% Series B Convertible Preferred Stock, as of such date of determination, divided by the conversion price. The stated value of each share of 0% Series B Convertible Preferred Stock is $6.80 and the initial conversion price is $6.80 per share, each subject to adjustment for stock splits, stock dividends, recapitalizations, combinations, subdivisions or other similar events. The holders of 0% Series B Convertible Preferred Stock are entitled to receive dividends if and when declared by the Company’s board of directors. The 0% Series B Convertible Preferred Stock is also subject to beneficial ownership limitations and conversion limitations, as further described in the documents. During the year ended December 31, 2021, 2,000 shares of the Company’s 0% Series B Convertible Preferred Stock were converted into 2,000 shares of its common stock, leaving 2,199 shares outstanding. As of December 31, 2021 and 2020, 2,199 and 4,199 shares of the Company’s 0% Series B Convertible Preferred Stock were outstanding, respectively. Subsequent to December 31, 2021, the remaining 2,199 shares of the Company’s 0% Series B Convertible Preferred Stock were converted to 2,199 shares of its common stock and no shares of the Company’s 0% Series B Convertible Preferred Stock are currently outstanding. Common Stock: At-the-Market Equity Offerings 2021 ATM Offering For the period August 31, 2021 to December 31, 2021, in connection with the At-the-Market Sales Agreement between the Company and its sales agent, Cantor Fitzgerald & Co., B. Riley FBR, Inc., BTIG, LLC, Compass Point Research & Trading, LLC and Roth Capital Partners, LLC (the “Sales Agents”) the Company received gross proceeds of approximately $600 million ($587.2 million, net of $12.8 million in commissions and expenses) from the sale of 19,910,589 shares of common stock, with an average fair value of $29.53 per share, in the 2021 ATM Offering. With the sale and issuance of these shares, all $600 million in shares of the Company’s common stock registered under the December 2021 Registration Statement had been issued and the Company completed the 2021 ATM Offering. F-37 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) 2020 ATM Offering As of October 15, 2020, the Company and H.C. Wainwright entered into the first amendment to the Sales Agreement (the “First Amendment to the Sales Agreement”). Pursuant to the First Amendment to the Sales Agreement, the Company sold, through H.C. Wainwright as its sales agent, $100.0 million in shares of the Company’s common stock from time to time in an at-the-market offering (the “October 2020 ATM Offering”). According to the First Amendment to the Sales Agreement, the Company paid H.C. Wainwright a commission of up to 3.0% of the aggregate gross proceeds the Company receives from all sales of its common stock in the October 2020 ATM Offering. All Sales of shares of the Company’s common stock, no par value in the October 2020 ATM Offering were made pursuant to the prospectus and prospectus supplement filed with and forming a part of the Company’s shelf registration statement on Form S-3 (Registration No. 333-249356), filed with the SEC on October 7, 2020 and declared effective as of October 15, 2020 (the “October 2020 Registration Statement”). Under the terms of the October 2020 ATM Offering, the Company only issued shares of its common stock. The Company did not issue any other securities, including but not limited to, options to purchase shares of the Company’s common stock and common stock warrants, under the October 2020 ATM Offering. Effective December 12, 2020, the Company and H.C. Wainwright entered into the second amendment to the Sales Agreement (the “Second Amendment to the Sales Agreement”). Pursuant to the Second Amendment to the Sales Agreement, the Company has sold, through H.C. Wainwright as its sales agent, up to $200.0 million in shares of the Company’s common stock from time to time in an at-the-market offering (the “December 2020 ATM Offering”). Pursuant to the Second Amendment to the Sales Agreement, the Company paid H.C. Wainwright a commission of up to 3.0% of the aggregate gross proceeds the Company received from all sales of its common stock in the December 2020 ATM Offering. During January 2021, in connection with the Second Amendment to the At-the-Market Sales Agreement between the Company and its sales agent, H.C. Wainwright, the Company received gross proceeds of approximately $84.8 million ($82.7 million, net of $2.1 million in expenses) from the sale of 4,433,468 shares of common stock, with an average fair value of $19.13 per share, in the December 2020 ATM Offering. With the sale and issuance of these shares, all $200 million in shares of the Company’s common stock registered under the December 2020 Registration Statement had been issued and the Company completed the December 2020 ATM Offering. 2019 ATM Offering The Company entered into an At-The-Market Sales Agreement with H.C. Wainwright & Co., LLC (“H.C. Wainwright”), dated as of May 24, 2019 (the “Sales Agreement”), relating to the sale by the Company through H.C. Wainwright as its sales agent, of up to $100.0 million in shares of the Company’s common stock from time to time in an at-the-market offering (“2019 ATM Offering”). All sales of the Company’s common stock in the 2019 ATM Offering were made pursuant to the prospectus and prospectus supplement forming a part of the Company’s shelf registration statement on Form S-3, as amended (Registration No. 333-226111), which was declared effective as of May 8, 2019 (the “2019 Registration Statement”). Effective as of October 15, 2020, as part of the First Amendment to the Sales Agreement discussed below, the Company and H.C. Wainwright terminated the 2019 ATM Offering. As of its termination, the Company had cumulatively sold 30.6 million shares of its common stock, for an aggregate gross sales price of approximately $74 million pursuant to the 2019 ATM Offering. With the termination of the 2019 ATM Offering, no additional securities will be sold by the Company pursuant to the prospectus supplement relating to the 2019 Registration Statement. Under the terms of the 2019, 2020 and 2021 ATM Offerings, the Company only issued shares of its common stock. F-38 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) 2021 Transactions During the year ended December 31, 2021, the Company issued 11,800,000 shares of its common stock in connection with its acquisition of Whinstone. See Note 4, “Acquisitions”. During the year ended December 31, 2021, the Company issued 645,248 shares of its common stock in connection with its acquisition of ESS Metron. See Note 4, “Acquisitions”. During the year ended December 31, 2021, 464,021 shares of common stock were issued to the Company’s board of directors, officers, employees and advisors of the Company in settlement of an equal number of fully vested restricted stock units awarded to such individuals by the Company pursuant to grants made under the Company’s 2019 Equity Plan, as amended (the “2019 Equity Plan”). The Company withheld 174,685 of these shares, at a fair value of approximately $5.1 million, to cover the withholding taxes related to the settlement of these vested restricted stock units, as permitted by the 2019 Equity Plan. During the year ended December 31, 2021, the Company issued 415,657 shares of its common stock in connection with the exercise of 415,657 common stock warrants issued to investors in connection with the Company’s January 2019 private placement transaction, for net proceeds of approximately $0.8 million. During the year ended December 31, 2021, the Company issued 543,686 shares of its common stock in connection with the cashless exercise of warrants to purchase 1,257,235 shares of common stock, which were issued to investors in connection with private placement transactions in December 2017. During the year ended December 31, 2021, the Company issued 10,286 shares of its common stock upon the cashless exercise of 12,000 stock options. During the year ended December 31, 2021, 2,000 shares of the Company’s 0% Series B Convertible Preferred Stock were converted into 2,000 shares of its common stock, leaving 2,199 shares outstanding. The Company currently has one equity compensation plan, The Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (the “2019 Plan”). On October 19, 2021, the Company’s shareholders approved the second amendment to its 2019 Equity Plan, which increased the number of shares of the Company’s common stock reserved for issuance by 4,400,000 shares. 2020 Transactions During the year ended December 31, 2020, the Company received net proceeds under the Sales Agreement, as amended with H.C. Wainwright of approximately $257.5 million (after deducting $7.3 million in commissions and expenses), at a weighted average gross sales price of $5.30 per share, from sales of 49,932,051 shares of its common stock. During the year ended December 31, 2020, the 200,000 shares of common stock held in escrow under the Escrow Deposit Agreement were voided and cancelled. During the year ended December 31, 2020, 122,377 shares of common stock were issued to a Company executive under an employment agreement in settlement of $175,000 of previously accrued compensation under the Company’s 2019 Riot Blockchain, Inc. Equity Incentive Plan (the “Equity Plan”), and 5,000 shares of common stock were issued in settlement of fully vested restricted stock rights previously granted and previously expensed under the Company’s former 2017 Equity Incentive Plan. During the year ended December 31, 2020, 2,048,096 shares of common stock were issued to the Company’s board of directors, officers and employees of the Company in settlement of an equal number of fully vested restricted stock units awarded to such individuals by the Company pursuant to grants made under the Company’s 2019 Equity Plan. The Company withheld 193,881 of these shares at a fair value of approximately $0.45 million, to cover the withholding taxes related to the settlement of these vested restricted stock units. The settlement of the fully vested restricted stock units included the accelerated vesting of 471,544 restricted stock units due to the resignation of a member of the Company’s Board, as permitted under the 2019 Equity Plan. During the year ended December 31, 2020, the Company issued 40,634 shares of its common stock to a consultant and advisors in settlement of fully vested restricted stock units granted under the 2019 Equity Plan. During the year ended December 31, 2020, the Company issued 1,492,487 shares of its common stock related to the exercise of 1,492,487 common stock warrants granted to the Investors in the January 2019 Private Financing for cash of approximately $2.9 million or $1.94 per share.

Restricted Common Stock, Stock

Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants	Note 13. Restricted Common Stock, Stock Options, Restricted Stock Units (“RSUs”) and Warrants The Company provides stock-based compensation to directors, employees and consultants under the 2019 Equity Plan, which was approved by shareholders on October 23, 2019 at the 2019 Annual Meeting of Shareholders. On November 12, 2020 at the 2020 Annual Meeting of Shareholders, the shareholders approved the First Amendment to the 2019 Equity Plan, which raised the total number of shares of the Company’s common stock to 4,061,809 shares. On October 19, 2021, the Company’s shareholders approved the second amendment to its 2019 Equity Plan, which increases the number of shares of the Company’s common stock reserved for issuance by 4,400,000 shares. The Company also provides stock-based compensation to employees, directors and consultants, with non-qualified options and warrants issued outside of the Plan. The Company has reserved 3,554,111 common shares for issuance under the 2019 Plan. Stock-based Compensation The Company’s stock-based compensation expenses recognized during the years ended December 31, 2021, 2020 and 2019, were attributable to selling, general and administrative expenses, which are included in the accompanying consolidated statements of operations. The Company recognized total stock-based compensation expense during the years ended December 31, 2021, 2020 and 2019, from the following categories: Years Ended December 31, 2021 2020 2019 Time-based restricted stock awards $ 4,935 $ 3,407 $ 687 Performance-based restricted stock awards 63,556 - - Stock option awards - - 58 Total stock-based compensation $ 68,491 $ 3,407 $ 745 Restricted Common Stock Awards During the year ended December 31, 2021, the Company granted performance-based and time-based restricted stock units (RSUs) to its directors, employees and advisors. Performance-based RSUs On August 12, 2021, the Compensation Committee of the Board of Directors of the Company approved a new performance-based restricted stock unit performance plan (the “Performance RSU Plan”) for all executive officers and eligible employees of the Company and its consolidated subsidiaries. In connection with the Performance RSU Plan, the Compensation Committee approved a form of performance-based restricted stock unit award agreement under the 2019 Equity Plan in relation to granting Performance RSUs. The Performance RSUs vest upon the successful completion of specified milestones related to added infrastructure capacity and also adjusted Earnings Before Income Taxes, Depreciation and Amortization (“EBITDA”) targets over a three-year performance period beginning in 2021 and ending on December 31, 2023. The value of the RSUs awarded is established as the fair market value of the Company’s common stock at the time of the grant. The Company recognizes compensation cost when achievement of the milestones and targets are probable, and recognizes the cost over the performance period. The Performance RSUs are settled in shares of the Company’s common stock upon vesting. F-40 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) A summary of the Company’s unvested performance-based restricted common stock activity in the year ended December 31, 2021 is presented here: Number of Shares Weighted Average Grant-Date Fair Value Unvested at January 1, 2021 - $ - Granted 4,033,159 $ 36.69 Vested (393,574 ) $ 36.67 Forfeited (235,000 ) $ 36.83 Unvested at December 31, 2021 3,404,585 $ 36.68 During the year ended December 31, 2021, the Company awarded 4,033,159 performance-based restricted shares of common stock under the 2019 Equity Plan to employees, which are generally eligible to vest upon the successful completion of specified milestones related to added infrastructure capacity and also adjusted EBITDA targets over a three-year performance period beginning in 2021 and ending on December 31, 2023. As of December 31, 2021, a total of 393,574 Performance RSU Awards for officers and employees were determined by the Compensation Committee to have vested for the successful completion of specified milestones. The value of performance-based restricted common stock grants is measured based on their fair market value on the date of grant and amortized over their respective estimated implicit service periods. During the year ended December 31, 2021, the fair value of awards granted totaled $148.0 million and as of December 31, 2021, there was approximately $47.5 million of total unrecognized compensation cost related to restricted common stock awards, which is expected to be recognized over a remaining weighted-average vesting period of approximately 5 months. There were no performance-based restricted stock awards granted during the years ended December 31, 2020 and 2019. Time-based RSUs A summary of the Company’s unvested time-based restricted common stock activity in the year ended December 31, 2021 is as follows: Number of Shares Weighted Average Grant-Date Fair Value Unvested at December 31, 2020 633,305 $ 1.27 Vested (232,283 ) $ 17.94 Granted 212,189 $ 33.33 Forfeited (2,650 ) $ 34.08 Unvested at December 31, 2021 610,561 $ 5.93 During the year ended December 31, 2021, the Company awarded 212,189 restricted shares of time-based common stock under the 2019 Equity Plan to directors, employees and advisors, with a fair value of $7.1 million, which are generally eligible to vest over a one-year period. During the year ended December 31, 2020, the Company awarded 1,544,359 restricted shares of time-based common stock with a fair value of $2.0 million, and during the year ended December 31, 2019, the Company awarded 1,542,332 restricted shares of time-based common stock with a fair value of $2.2 million. The value of time-based restricted common stock grants is measured based on their fair market value on the date of grant and amortized over their respective vesting periods. As of December 31, 2021, there was approximately $2.3 million of unrecognized compensation cost related to unvested restricted common stock rights, which is expected to be recognized over a remaining weighted-average vesting period of approximately 3 months. F-41 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Stock Incentive Plan Options The Company estimates the fair value of the share-based option awards on the date of grant using the Black-Scholes option-pricing model (the “Black-Scholes model”). Using the Black-Scholes model, the value of the award that is ultimately expected to vest is recognized over the requisite service period in the statement of operations. The Company attributes compensation to expense using the straight-line single option method for all options granted. The Company’s determination of the estimated fair value of share-based payment awards on the date of grant under the Plan is affected by the following variables and assumptions: • The grant date exercise price – the closing market price of the Company’s common stock on the date of the grant;   • Expected option term – based on historical experience with existing option holders estimated at 3-5 years;   • Estimated dividend rates – based on historical and anticipated dividends over the life of the option;   • Legal term of the option – grants have legal lives of 10 years;   • Risk-free interest rates – with maturities that approximate the expected life of the options granted;   • Calculated stock price volatility – calculated over the expected life of the options granted, which is calculated based on the daily closing price of the Company’s common stock over the period commencing in mid-2017 when the Company changed its strategic focus; and   • Option exercise behaviors – based on actual and projected employee stock option exercises and forfeitures.   • The Company accounts for forfeitures as they occur.   The Company currently provides stock-based compensation to employees, directors and consultants under the Plan. During the year ended December 31, 2021, the Company issued 10,286 shares of its common stock for the exercise of 12,000 stock options. There were no stock options granted during the years ended December 31, 2021, 2020 and 2019, and as of December 31, 2021, there are no stock options outstanding. Other common stock purchase warrants During the year ended December 31, 2021, 63,000 warrants were issued to XMS as partial payment for its advisory services in connection with the Whinstone Acquisition. The warrant entitles XMS to purchase from the Company up to 63,000 shares of the Company’s common stock, no par value per share, at a purchase price of $48.37 per share at any time through August 12, 2026. All warrants issued to prior investors in connection with previously disclosed private placement transactions in 2019 and 2017, had either been exercised or forfeited. F-42 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The following is a summary of outstanding warrants for the year ended December 31, 2021: Shares Underlying Options/Warrants Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding and exercisable at December 31, 2020 2,061,770 $ 32.33 1.1 $ 6,256 Granted 63,000 $ 48.37 4.9 - Exercised (1,672,892 ) $ 1.94 - - Forfeited (388,878 ) $ 40.00 - - Outstanding and exercisable at December 31, 2021 63,000 $ 48.37 4.6 $ - The aggregate intrinsic value in the table above represents the total intrinsic value (the difference between the Company’s closing stock price on December 31, 2021 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 December 31, 2021. There were no warrants granted during the years ended December 31, 2020 and 2019.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 14. Fair Value Measurements Assets and liabilities measured at fair value on a recurring basis The Company’s assets and liabilities measured at fair value on a recurring basis consisted of the following as of the Whinstone Acquisition Date of May 26, 2021, and December 31, 2021: Fair value measured at May 26, 2021 Total carrying value at May 26, 2021 Quoted prices in active markets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Derivative asset $ 13,967 $ - $ - $ 13,967 Contingent consideration liability $ 82,953 $ - $ - $ 82,953 Fair value measured at December 31, 2021 Total carrying value at December 31, 2021 Quoted prices in active markets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Derivative asset $ 26,079 $ - $ - $ 26,079 Contingent consideration liability $ 83,928 $ - $ - $ 83,928 F-43 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Level 3 Assets Power Supply Agreement During the year ended December 31, 2021, the Company recorded a derivative asset related to its Power Supply Agreement. The Power Supply Agreement was classified as a derivative asset and measured at fair value on the date of the Company’s acquisition of Whinstone, with changes in fair value recognized in change in fair value of derivative asset in operating income or loss on the accompanying consolidated statements of operations. The contract was not designated as a hedging instrument. Prior to the Whinstone Acquisition, the Company did not have any derivative contracts. The estimated fair value of the Company’s derivate asset is classified in Level 3 of the fair value hierarchy due to the significant unobservable inputs utilized in the valuation. Specifically, our discounted cash flow estimation models contain quoted commodity exchange spot and forward prices and are adjusted for basis spreads for load zone-to-hub differentials through the term of the Power Supply Agreement, which ends in December 2030. The discount rate utilized of approximately 21% includes observable market inputs, but also includes unobservable inputs based on qualitative judgment related to company-specific risk factors. The terms of the Power Supply Agreement require margin-based collateral, calculated as exposure resulting from fluctuations in the market cost rate of electricity versus the fixed price stated in the contract. The margin-based collateral requirement to the Company is zero as of December 31, 2021. Level 3 Liabilities Business Combination Contingent Consideration The Company recorded a Level 3 financial liability during the year ended December 31, 2021, relating to the contingent consideration arrangement arising from the acquisition of Whinstone. Contingent consideration represents an obligation of the Company to transfer cash to the Seller when Whinstone realizes or receives a benefit from utilization of certain defined power credits. See Note 4, “Acquisitions”. The Company estimated the fair value of the contingent consideration using a discounted cash flow analysis, which includes estimates of both the timing and amounts of potential future power credits. These estimates were determined using the Company’s historical consumption quantities and patterns combined with management’s expectations of its future consumption requirements, which require significant judgment and depend on various factors outside the Company’s control, such as construction delays. The discount rate of approximately 2.5% includes observable market inputs, such as TXU’s parent company’s Standard & Poor’s credit rating of BB, but also includes unobservable inputs such as interest rate spreads, which were estimated based on qualitative judgment related to company-specific risk factors. Specifically, due to the power credits being subordinated obligations for TXU’s parent, we used one credit rating lower than BB in our yield curve to estimate a reasonable interest rate spread to determine the cost of debt input. The significant assumptions used to estimate fair value of the derivative contract include a discount rate of 21%, which reflected the nature of the contract as it relates to the risk and uncertainty of the estimated future mark-to-market adjustments, forward price curves of the power supply, broker/dealer quotes and other similar data obtained from quoted market prices or independent pricing vendors. Although these estimates are based on management’s best knowledge of current events, the estimates could change significantly from period to period. Actual results that differ from the assumptions used and any changes to the significant assumptions and unobservable inputs used could have a material impact on future results of operations. Changes in Level 3 assets and liabilities measured at fair value on a recurring basis Unobservable inputs were used to determine the fair value of positions that the Company has classified within the Level 3 category. Unrealized gains and losses associated with the asset within the Level 3 category includes changes in fair value that were attributable to unobservable (e.g., changes in unobservable long-dated volatilities) inputs. F-44 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The following table presents the changes in the estimated fair value of the derivative asset measured using significant unobservable inputs (Level 3) for the year ended December 31, 2021 (in thousands): Derivative Asset Balance as of January 1, 2021 $ - Acquisition of Whinstone 13,967 Change in fair value 12,112 Balance as of December 31, 2021 $ 26,079 For the year ended December 31, 2021 there was a change of approximately $12.1 million in Level 3 assets measured at fair value. Additionally, during the year ended December 31, 2021, power sales back to ERCOT through its demand response programs of $6.5 million were recorded in change in fair value of derivative asset in the consolidated statements of operations. There were no Level 3 assets for the year ended December 31, 2020. The following table presents the changes in the estimated fair value of our liability for contingent consideration measured using significant unobservable inputs (Level 3) for the year ended December 31, 2021 (in thousands): Contingent Consideration Liability Balance as of January 1, 2021 $ - Acquisition of Whinstone 82,953 Change in fair value 975 Balance as of December 31, 2021 $ 83,928 For the year ended December 31, 2021 the change in Level 3 liabilities measured at fair value was approximately $1.0 million. There were no Level 3 liabilities for the year ended December 31, 2020. Our estimated liability for contingent consideration represents potential payments of additional consideration for the Whinstone Acquisition, payable if Whinstone realizes or receives a benefit from utilization of certain defined power credits. Changes in the fair value of contingent consideration are recorded in the consolidated statements of operations within change in fair value of contingent consideration. There were no transfers of financial instruments between Level 1, Level 2 and Level 3 during the period presented. Assets and Liabilities Not Measured at Fair Value on a Recurring Basis In addition to assets and liabilities that are measured at fair value on a recurring basis, we also measure certain assets and liabilities at fair value on a nonrecurring basis. Our non-financial assets, including goodwill, intangible assets, operating lease right of use assets, and property, plant and equipment, are measured at fair value when there is an indication of impairment and the carrying amount exceeds the asset’s projected undiscounted cash flows. These assets are recorded at fair value only when an impairment charge is recognized.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Note 15. Commitments and Contingencies Commitments Operating Leases The Company leases its primary office locations and data center hosting facilities, as well as a ground lease, under noncancelable lease agreements that expire on varying dates through 2030. See Note 11, “Leases”. F-45 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Water Reservation Agreement Whinstone executed a water reservation agreement in April 2021 with the lessor of the ground lease to obtain a certain quantity of water from a nearby lake to be used by the Company for commercial purposes. We use the water for evaporative cooling in our data center facility. The initial term of the agreement runs through December 2027 and requires annual payments of approximately $1.0 million. The Company concluded that the agreement was not a lease or a derivative instrument. Because the Company obtained an additional right of use for the reserved water amount, and the charges were increased by a standalone price commensurate with the additional water use rights and at market rates, the water reservation agreement was determined to be a lease modification accounted for as a separate contract. As such, the fees of the water reservation agreement were excluded from the lease payments of the ground lease and the water reservation agreement was accounted for as a separate executory contract. Coinmint Co-location Mining Services Agreement On April 8, 2020, the Company entered into an agreement with Coinmint, (the “Coinmint Agreement”), pursuant to which Coinmint agreed to provide up to approximately 9.5 MW of power and to perform all maintenance necessary to operate Riot’s miners at the Coinmint facility. In exchange, Coinmint is reimbursed for direct production expenses and receives a performance fee based on the net cryptocurrencies generated by Riot’s miners deployed at the Coinmint facility. The initial term of the Coinmint Agreement was six months with automatic renewals for subsequent three month terms until and unless terminated as provided in the agreement. 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. Expenses related to the defense of such claims are recorded by the Company as incurred 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. Shareholder Class Action Suit 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. 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. Takata Takata Klapper F-46 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) 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 filed multiple motions to dismiss the amended complaint starting on September 3, 2019. On April 30, 2020, the court granted the motions to dismiss, which resulted in the dismissal of all claims without prejudice. On December 24, 2020, Lead Plaintiff filed another amended complaint. Defendants filed multiple motions to dismiss the amended complaint starting on February 8, 2021, which have been fully briefed. On February 28, 2022, the court issued an order instructing the parties to submit supplemental briefing by March 14, 2022 on particular issues raised in the motions to dismiss. 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, another 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. F-47 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) On December 13, 2018, another shareholder derivative complaint was filed on behalf of the Company in the United District Court for the Northern District of New York ( Monts 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.

Income taxes

Income taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income taxes	Note 16. Income taxes The components of the loss from continuing operations before income taxes for the years ended December 31, 2021, 2020 and 2019 are as follows (in thousands): For the years ended December 31, 2021 2020 2019 Domestic $ (7,672 ) $ (12,667 ) $ (20,446 ) Foreign — — — Loss from Continuing Operations before Income Taxes $ (7,672 ) $ (12,667 ) $ (20,446 ) F-48 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The components of income tax benefit (expense) are as follows (in thousands): As of December 31, 2021 2020 2019 Current: US Federal $ — $ — $ — US State (254 ) — — Foreign — — — Total current benefit (expense) $ (254 ) $ — $ — Deferred: US Federal $ — $ — $ 117 US State — — 26 Foreign — — — Total deferred benefit — — 143 Total benefit (expense) for income taxes $ (254 ) $ — $ 143 The tax effects of temporary differences and tax loss and credit carry forwards that give rise to significant portions of deferred tax assets and liabilities at December 31, 2021 and 2020 are comprised of the following (in thousands): As of December 31, 2021 2020 Deferred income tax assets: Net operating loss carryforwards $ 64,394 $ 51,938 Research and development credit carryforwards 1,063 1,063 Long-term investments 3,402 - Operating lease liabilities 1,454 - Stock option expense 15,827 1,253 Impairment of mining related assets and other 10,504 803 Total deferred tax assets 96,644 55,057 Valuation allowance (59,039 ) (55,057 ) Net deferred tax assets 37,605 - Deferred income tax liabilities: Derivative asset (5,477 ) - Property and equipment and other (32,128 ) - Net deferred tax assets (liabilities) $ - $ - The Company has approximately $264.9 million and $219.6 million of federal and state tax Net Operating Losses (“NOLs”), respectively, that may be available to offset future taxable income. Federal and state net operating loss carryforwards of $125.2 million and $147.1 million, respectively, if not utilized, expire between 2026 2037 Furthermore, as a result of changes in the ownership of our common stock and changes in our business operations, our ability to use our federal NOLs may be limited under Internal Revenue Code Section 382 and 383. State NOLs are subject to similar limitations in many cases. As a result, our substantial NOLs may not have any value to us. The statute of limitations for assessment by the IRS and state tax authorities is open for tax years ending December 31, 2017 through 2021, although carryforward attributes that were generated prior to tax year 2017 may still be adjusted upon examination by the IRS or state tax authorities if they either have been or will be used in a future period. Currently, no federal or state income tax returns are under examination by the respective taxing authorities. In assessing the realization of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the period in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and taxing strategies in making this assessment. In case the deferred tax assets will not be realized in future periods, the Company has provided a valuation allowance for the full amount of the deferred tax assets at December 31, 2021 and 2020. The valuation allowance increased by approximately $4.0 million during the year ended December 31, 2021. F-49 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The expected tax expense (benefit) based on the U.S. federal statutory rate is reconciled with actual tax expense (benefit) as follows (in thousands): For the years ended December 31, 2021 2020 2019 Statutory federal income tax expense (benefit) $ (1,611 ) $ (2,660 ) $ (4,293 ) State taxes, net of federal tax expense (benefit) 347 (471 ) (664 ) Nondeductible/nontaxable items 1,732 (45 ) 1,142 Tax return to provision true-up 313 (8,737 ) - State tax rate change (1,897 ) 2,231 - Other - - 195 Change in valuation allowance 1,370 9,682 3,477 Income taxes expense (benefit) $ 254 $ - $ (143 ) The Company has not identified any uncertain tax positions requiring a reserve as of December 31, 2021 and 2020. The Company’s policy is to recognize interest and penalties that would be assessed in relation to the settlement value of unrecognized tax benefits as a component of income tax expense. The Company did not accrue either interest or penalties for the years ended December 31, 2021 and 2020. The Company is subject to U.S. federal income tax and primarily Florida, Colorado and Texas state income tax. The Company has not been under tax examination in any jurisdiction for the years ended December 31, 2021 and 2020.

Animal Health License Agreement

Animal Health License Agreements	12 Months Ended
	Dec. 31, 2021
Animal Health License Agreements [Abstract]
Animal Health License Agreements	Note 17. Animal Health License Agreements Ceva License Agreement In July 2012, the Company entered into an exclusive license agreement (the “License Agreement”) with Ceva Santé Animale S.A. (“Licensee”), under which the Company granted the Licensee an exclusive royalty-bearing license, until December 31, 2028, to the Company’s intellectual property and other assets, including both (a) the Company’s patent rights and know-how, relating to recombinant single chain reproductive hormone technology for use in non-human mammals (the “Company’s Animal Health Assets”) and (b) the technology licensed to the Company by Washington University in St. Louis (“WU”). The WU license agreement expired under its terms in 2020, with no impact on the License Agreement. The License Agreement contains termination provisions as defined in the License Agreement. Under the License Agreement, the Licensee obtained a worldwide exclusive license to develop, seek regulatory approval for and offer to sell, market, distribute, import and export luteinizing hormone (“LH”) and/or follicle-stimulating hormone (“FSH”) products for bovine (cattle), equine and swine in the field of the assistance and facilitation of reproduction in bovine, equine and swine animals. The Company also granted the Licensee an option and right of first refusal to develop additional animal health products outside of the licensed field of use or any diagnostic pregnancy detection tests for non-human mammals. Under the License Agreement as of December 31, 2021, the Company would be entitled to receive future payments if Ceva achieves certain regulatory approvals as further outlined in the License Agreement. The upfront license fees received from the License Agreement have been recorded as deferred revenue and are amortized over the term of the License Agreement. License fees revenue totaling a net of approximately $1.6 million commenced being amortized in July 2012. As of December 31, 2021, deferred revenue of $0.1 million has been classified as a current liability and $0.6 million has been classified as a long-term liability. The current liability represents the next twelve months’ portion of the license fees revenue. For each of the years ended December 31, 2021, 2020 and 2019, approximately $0.1 million was recorded as the amortized license fee revenue. F-50 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts)

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment Information	Note 18. Segment Information The Company applies ASC 280, Segment Reporting No operating segments have been aggregated to form the reportable segments. The Company does not allocate all assets to the reporting segments as these are managed on an entity-wide basis. Therefore, the Company does not separately disclose the total assets of its reportable operating segments. $29.4 million of goodwill from the ESS Metron acquisition is allocated to our Engineering segment and $260.9 million of goodwill from the Whinstone Acquisition is allocated to our Hosting segment. The Mining segment generates revenue from the cryptocurrency the Company earns through its mining activities. The Hosting segment generates revenue from long-term customer contracts for the provision/consumption of electricity, construction of infrastructure, operation of data centers and maintenance/management of computing capacity from the Company’s high performance data center facility in Rockdale, Texas. The Engineering segment generates revenue through customer contracts for custom engineered electrical products. The Hosting segment purchases custom engineered electrical products from the Engineering segment in the ordinary course of business. The revenue and cost of revenues from intersegment transactions have been eliminated in the consolidated statements of operations in accordance with US GAAP. For purposes of segment reporting, the revenues and cost of revenues for each segment are presented in the table below on a stand-alone basis, with the intersegment eliminations presented separately, such that total revenue and total cost of revenue total to the consolidated statements of operations. All other revenues are from external customers. No single customer or related group of customers contributed 10% or more of the Company’s total revenue during the years ended December 31, 2021, 2020 and 2019. However, two customers accounted for approximately 97% of the Company’s Hosting revenue. For the year ended December 31, 2021, approximately 75% of the Company’s Mining revenue was generated from the Coinmint Facility in New York, and the remaining 25% was generated from our Whinstone Facility in Rockdale, Texas. The following table details revenue and cost of revenues for the Company’s reportable segments for the years ended December 31, 2021, 2020 and 2019, and reconciles to net income (loss) in the consolidated statements of operations (in thousands): F-51 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Years Ended December 31, 2021 2020 2019 Reportable segment revenue: Revenue, net - mining $ 184,422 $ 11,984 $ 6,741 Revenue, net - hosting 24,546 - - Revenue, net - engineering 5,265 - - Other revenue 97 97 96 Eliminations (1,087 ) - - Total segment and consolidated revenue 213,243 12,081 6,837 Reportable segment cost of revenue (exclusive of depreciation and amortization shown below): Cost of revenues - mining 45,513 6,251 6,097 Cost of revenues - hosting 32,998 - - Cost of revenues - engineering 4,351 - - Eliminations (769 ) - - Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below) 82,093 6,251 6,097 Reconciling Items: Acquisition-related costs (21,198 ) - - Selling, general and administrative (87,429 ) (10,251 ) (9,159 ) Depreciation and amortization (26,324 ) (4,494 ) (119 ) Change in fair value of derivative asset 18,626 - - Change in fair value of contingent consideration (975 ) - - Realized gain on sale/exchange of cryptocurrencies 253 5,184 665 Impairment of intangible rights acquired - - (700 ) Impairment of long-term investment - (9,413 ) - Impairment of cryptocurrencies (36,462 ) (989 ) (844 ) Loss on issuance of convertible notes, common stock and warrants - - (6,155 ) Change in fair value of warrant liability - - (2,869 ) Change in fair value of convertible notes - - (3,896 ) Reversal of registration rights penalty - 1,358 - Gain on deconsolidation of Tess - - 1,139 Gain (loss) on sale of equipment - 29 - Interest income (expense) - 85 - Interest expense (296 ) - (122 ) Other income (expense) 2,378 (6 ) 874 Realized gain on sale/exchange of long-term investment 26,260 - - Unrealized loss on marketable equity securities (13,655 ) - - Current income tax expense (254 ) - - Deferred income tax benefit - - 143 Net loss $ (7,926 ) $ (12,667 ) $ (20,303 )

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Note 19. Subsequent Events: Restricted stock Subsequent to December 31, 2021, the Company granted 43,149 time-based restricted stock units with a fair value of approximately $0.8 million and 365,500 performance-based restricted stock units with a fair value of approximately $7.3 million. Subsequent to December 31, 2021, 937,530 shares of common stock were issued to the Company’s officers and employees in settlement of an equal number of fully vested restricted stock units awarded to such individuals by the Company pursuant to grants made under the Company’s 2019 Equity Plan. The Company withheld 414,441 of these shares at a fair value of approximately $8.2 million, to cover withholding taxes related to the settlement of these vested restricted stock units, as permitted by the 2019 Equity Plan. Preferred stock Subsequent to December 31, 2021, the remaining 2,199 shares of the Company’s 0% Series B Convertible Preferred Stock were converted to 2,199 shares of its common stock. Ground lease and water reservation agreement amendments Subsequent to December 31, 2021, the Company executed a third lease amendment to the ground lease for the Whinstone facility, to add to the existing 100-acre tract of land, a second contiguous 100-acre tract of real property for an additional $0.9 million in annual payments. The initial term of the lease is scheduled to expire on January 31, 2032. Concurrent with this third amendment, the Company executed a first amendment to the water reservation agreement to obtain additional water from a nearby lake to be used by the Company for commercial purposes, such as evaporative cooling in our data center facility, for an additional $1.0 million in annual payments. The term of the original water reservation agreement was reset for a period of twelve years from the original commencement date of April 2021 The Company has evaluated all events that occurred after the balance sheet date through the date when the financial statements were issued. No other significant recognized or non-recognized subsequent events were noted.

Basis of Presentation, Summar_2

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of presentation and principles of consolidation The accompanying consolidated financial statements of the Company include the accounts of the Company and its wholly or majority owned and controlled subsidiaries. Consolidated subsidiaries results are included from the date the subsidiary was formed or acquired. Intercompany investments, balances and transactions have been eliminated in consolidation. Non–controlling interests represents the minority equity investment in the Company’s subsidiaries, plus the minority investors’ share of the net operating results and other components of equity relating to the non–controlling interest. The accompanying audited consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. They include the results of operations and financial condition of Whinstone beginning on May 26, 2021 and ESS Metron on December 1, 2021. See Note 4, “Acquisitions”, for additional information on our acquisitions of Whinstone and ESS Metron. All intercompany balances and transactions have been eliminated in consolidation. Amounts are in thousands except for share, per share and miner amounts.
Use of estimates	Use of estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“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 financial statements include estimates associated with valuing contingent consideration for a business combination and periodic reassessment of its fair value, allocating the fair value of purchase consideration to assets acquired and liabilities assumed in business acquisitions, revenue recognition, valuing the derivative asset classified under Level 3 fair value hierarchy, determining the useful lives and recoverability of long-lived assets, impairment analysis of goodwill and finite-lived intangibles, stock-based compensation, and the valuation allowance associated with the Company’s deferred tax assets.
Reclassifications	Reclassifications Certain prior period amounts have been reclassified to conform to the current period presentation. The reclassifications did not have a material impact on the Company’s consolidated financial statements and related disclosures. The impact on any prior period disclosures was immaterial.
Cash and cash equivalents	Cash and cash equivalents The Company considers all highly liquid investments with an original maturity of three months or less at the date of acquisition to be cash equivalents. From time to time, the Company’s cash account balances exceed the balances as covered by the Federal Deposit Insurance System. The Company has never suffered a loss due to such excess balances. As of December 31, 2021 and 2020, the Company had no cash equivalents.
Accounts Receivable, net	Accounts Receivable, net The Company’s accounts receivable balance consists of amounts due from its hosting and engineering customers. The Company records accounts receivable at the invoiced amount less an allowance for any potentially uncollectable accounts under the current expected credit loss (“CECL”) impairment model under ASU 2016-13, Financial Instruments – Credit Losses (Topic 326), Measurement of Credit Losses on Financial Assets Allowance for credit losses are recorded as a direct reduction from an asset’s amortized cost basis. Credit losses and recoveries are recorded in selling, general and administrative expenses in the consolidated statements of operations. Recoveries of financial assets previously written off are recorded when received. For the years ended December 31, 2021, 2020 and 2019, the Company did not record any credit losses or recoveries. Based on the Company’s current and historical collection experience, management recorded an allowance for doubtful accounts of less than $0.1 million as of December 31, 2021. There were no accounts receivable as of December 31, 2020. No individual customer accounted for more than 7.5% of revenue for the year ended December 31, 2021. As of December 31, 2021, seven customers accounted for more than 83% of accounts receivable.
Long-term investments	Long-term investments Effective January 1, 2018, the Company adopted Accounting Standards Update (“ASU”) 2016-01 and related ASU 2018-03 concerning recognition and measurement of financial assets and financial liabilities. In adopting this new guidance, the Company has made an accounting policy election to adopt an adjusted cost method measurement alternative for investments in equity securities without readily determinable fair values. For equity investments that are accounted for using the measurement alternative, the Company initially records equity investments at cost but is required to adjust the carrying value of such equity investments through earnings when there is an observable transaction involving the same or a similar investment with the same issuer or upon an impairment.
Revenue recognition	Revenue recognition Mining The Company recognizes revenue under ASC 606, Revenue from Contracts with Customers. • Step 1: Identify the contract with the customer   • Step 2: Identify the performance obligations in the contract   • Step 3: Determine the transaction price   • Step 4: Allocate the transaction price to the performance obligations in the contract   • Step 5: Recognize revenue when the Company satisfies a performance obligation    In order to identify the performance obligations in a contract with a customer, a company must assess the promised goods or services in the contract and identify each promised good or service that is distinct. A performance obligation meets ASC 606’s definition of a “distinct” good or service (or bundle of goods or services) if both of the following criteria are met: The customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract). If a good or service is not distinct, the good or service is combined with other promised goods or services until a bundle of goods or services is identified that is distinct. F-10 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer. The consideration promised in a contract with a customer may include fixed amounts, variable amounts, or both. When determining the transaction price, an entity must consider the effects of all of the following: • Variable consideration   • Constraining estimates of variable consideration   • The existence of a significant financing component in the contract   • Noncash consideration   • Consideration payable to a customer   Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The transaction price is allocated to each performance obligation on a relative standalone selling price basis. The transaction price allocated to each performance obligation is recognized when that performance obligation is satisfied, at a point in time or over time as appropriate. The Company has entered into digital asset mining pools by executing contracts, as amended from time to time, currently with one mining pool operator, with the mining pool operators to provide computing power to the mining pool. The contracts are terminable at any time by either party and the Company’s enforceable right to compensation only begins when the Company provides computing power to the mining pool operator. In exchange for providing computing power, the Company is entitled to a fractional share of the fixed cryptocurrency award the mining pool operator receives (less digital asset transaction fees to the mining pool operator which are immaterial and are recorded as a deduction from revenue), for successfully adding a block to the blockchain. The terms of the agreement provide that neither party can dispute settlement terms after thirty-five days following settlement. The Company’s fractional share is based on the proportion of computing power the Company contributed to the mining pool operator to the total computing power contributed by all mining pool participants in solving the current algorithm. Providing computing power in digital asset transaction verification services is an output of the Company’s ordinary activities. The provision of providing such computing power is the only performance obligation in the Company’s contracts with mining pool operators. The transaction consideration the Company receives, if any, is noncash consideration, which the Company measures at fair value on the date received, which is not materially different than the fair value at contract inception or the time the Company has earned the award from the pools. The consideration is all variable. Because it is not probable that a significant reversal of cumulative revenue will not occur, the consideration is constrained until the mining pool operator successfully places a block (by being the first to solve an algorithm) and the Company receives confirmation of the consideration it will receive, at which time revenue is recognized. There is no significant financing component in these transactions. Fair value of the cryptocurrency award received is determined using the quoted price of the related cryptocurrency at the time of receipt. Hosting In general, we provide power for our data center customers on a variable (sub-metered) basis. A customer pays us variable monthly fees for the specific amount of power utilized at rates specified in each contract, subject to certain minimums. We recognize variable power revenue each month as the uncertainty related to the consideration is resolved, power is provided to our customers, and our customers utilize the power (the customer simultaneously receives and consumes the benefits of the Company’s performance). F-11 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) We have determined that our contracts contain a series of performance obligations which qualify to be recognized under a practical expedient available known as the “right to invoice.” This determination allows variable consideration in such contracts to be allocated to and recognized in the period to which the consideration relates, which is typically the period in which it is billed, rather than requiring estimation of variable consideration at the inception of the contract. We have also determined that the contracts contain a significant financing component because the timing of revenue recognition differs from the timing of invoicing by a period, exceeding one year. The Company also installs certain hosted customers’ mining equipment and bills the customer at a fixed fee per piece of equipment or at an hourly rate. Revenue is recognized upon completion of the installation. We generate engineering and construction services revenue from the fabrication and deployment of immersion cooling technology for Bitcoin mining customers. We bill the customer at a fixed monthly fee or at an hourly rate. For the construction of customer-owned equipment, revenue is recognized upon completion of each phase of the construction project, as defined in each contract. For construction of assets owned by Whinstone but paid for and used by the customer during the term of their hosting contract, revenue is recognized on a straight-line basis over the remaining life of the contract. Maintenance services include cleaning, cabling and other services to maintain the customers’ equipment. We bill the customer at a fixed monthly fee or at an hourly rate. Revenue is recognized as these services are provided. Deferred revenue is primarily from advance payments received and is recognized on a straight-line basis over the remaining life of the contract or upon completion of the installation of the customers’ equipment. Our primary hosting contracts contain Service Level Agreement clauses, which guarantee a certain percentage of time the power will be available to our customer. In the rare case that we may incur penalties under these clauses, we account for payments made to customers in accordance with ASC 606-10-32-25, Consideration Payable to a Customer Engineering Substantially all revenue is derived from the sale of custom products built to customers’ specifications under fixed-price contracts with one identified performance obligation. Revenues are recognized over time as performance creates or enhances an asset with no alternative use, and for which the Company has an enforceable right to receive compensation as defined under the contract. To determine the amount of revenue to recognize over time, the Company utilizes the cost-to-cost method as management believes cost incurred best represents the amount of work completed and remaining on projects. As the cost-to-cost method is driven by incurred cost, the Company calculates the percentage of completion by dividing costs incurred to date by the total estimated cost. The percentage of completion is then multiplied by estimated revenues to determine inception-to-date revenue. Approved changes to design plans are generally recognized as a cumulative adjustment to the percentage of completion calculation. Revenue recognized for the period is the current inception-to-date recognized revenue less the prior period inception-to-date recognized revenue. If a contract is projected to result in a loss, the entire contract loss is recognized in the period when the loss was first determined, and any additional losses incurred subsequently are recognized in the subsequent reporting periods as they are identified. Additionally, contract costs incurred to date and expected total contract costs are continuously monitored during the term of the contract. F-12 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Changes in the job performance, job conditions and final contract settlements are factors that influence management’s assessment of total contract value and the total estimated costs to complete those contracts, and therefore, profit and revenue recognition. Any costs to obtain a contract are not material to the Company’s financial statements and would be expensed as incurred. Because of the inherent uncertainties in estimating costs, it is at least reasonably possible that the estimates used will change within the near term. The length of time for the Company to complete a custom product varies but is typically between four to 12 weeks. Customers are typically required to make periodic progress payments to the Company based on contractually agreed-upon milestones. Invoices are due net, 30 days, and retainage, if any, is generally due 30 days after delivery. Taxes collected from customers and remitted to governmental authorities are excluded from revenue. Shipping and handling costs are treated as fulfillment costs and are included in cost of sales. Other Revenue Other revenue is revenue recognized from an upfront license fee generated from our legacy animal health business. The upfront fee was recorded as deferred revenue and is being amortized into revenue over the term of the License Agreement. Derivative Accounting Power Supply Contract and Demand Response Services In May 2020, Whinstone entered into a Power Supply Agreement with TXU Energy Retail Company LLC (“TXU”) to provide the delivery of a fixed amount of electricity by TXU to Whinstone (via the facility owned by Oncor Electric Delivery Company, LLC (“Oncor”)) for a fixed price through April 30, 2030. The Power Supply Agreement provides a consistent and sufficient supply of electricity at the Whinstone Facility. If Whinstone uses more electricity than contracted, the cost of the excess is incurred at the current spot rate. Concurrently, Whinstone entered into a contract with Oncor for the extension of delivery system transmission/substation facilities to facilitate delivery of the electricity to the Whinstone Facility (the “Facilities Agreement”). Power costs incurred under this contract are determined on an hourly basis using settlement information provided by the Electric Reliability Council of Texas (“ERCOT”) and are recorded in cost of revenues - data center hosting in the consolidated statements of operations. The demand response services program (“Demand Response Service”) provides the ERCOT market with valuable reliability and economic services by helping to preserve system reliability, enhancing competition, mitigating price spikes, and encouraging the demand side of the market to respond better to wholesale price signals. In collaboration with market participants such as the Company, ERCOT has developed demand response products and services for customers that have the ability to reduce or modify electricity use in response to instructions or signals. Market participants with electrical loads like Whinstone may participate in the Demand Response Service program directly by offering their electrical loads into the ERCOT markets, or indirectly by voluntarily reducing their energy usage in response to increasing wholesale prices. Depending on the spot market price of electricity, under this program, we opportunistically sell electricity back to ERCOT in exchange for cash payments, rather than providing the power to our customers during these peak times in order to most efficiently manage our operating costs. We sold approximately $6.5 million in electricity back to ERCOT during the period from May 26, 2021 (the “Acquisition Date”) through December 31, 2021. These sales back to ERCOT are recorded as part of the change in fair value of derivative asset in the consolidated statements of operations. While we manage operating costs at the Whinstone Facility in part by periodically selling unused or uneconomical power in the market back to ERCOT, we do not consider such actions trading activities. That is, we do not engage in speculation in the power market as part of our ordinary activities. Because the Demand Response Services programs allow for net settlement, we have determined the Power Supply Agreement meets the definition of a derivative under ASC 815, Derivatives and Hedging, F-13 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) In February 2021, the State of Texas experienced an extreme and unprecedented winter weather event that resulted in prolonged freezing temperatures and caused an electricity generation shortage that was severely disruptive to the whole state. While demand for electricity reached extraordinary levels due to the extreme cold, the supply of electricity significantly decreased in part because of the inability of certain power generation facilities to supply electric power to the grid. Due to the extreme market price of electricity during this time, at the request of ERCOT, Whinstone stopped supplying power to its customers and instead sold power back to the grid. In April 2021, under the provisions of the TXU Power Supply Agreement, and as a result of the weather event, Whinstone entered into a Qualified Scheduling Entity (“QSE”) Letter Agreement, which resulted in Whinstone being entitled to receive approximately $125.1 million for its power sales during the February winter storm, all under the terms and conditions of the QSE Letter Agreement. Whinstone received cash of $29.0 million in April 2021 (after deducting $10.0 million in power management fees owed by Whinstone), approximately $59.7 million is scheduled to be credited against future power bills of Whinstone beginning in 2022 and the remaining $26.3 million is contingent upon ERCOT’s future remittance. These amounts are gross before fair value adjustments and expenses incurred by Whinstone for power management fees noted above and customer settlements. The fair value of the settlement agreement was estimated and recognized as an asset as part of acquisition accounting. Additionally, pursuant to the Northern Data stock purchase agreement, the Company agreed to pay Seller additional consideration in cash in the amount of the future power credits, net of income taxes, when and if realized by Whinstone. See Note 4, “Acquisitions”.
Fair Value Measurement	Fair Value Measurement The Company follows the accounting guidance in ASC 820, Fair Value Measurement, The accounting guidance requires fair value measurements be classified and disclosed in one of the following three categories: Level 1: Quoted prices in active markets for identical assets or liabilities. Level 2: Observable inputs other than Level 1 prices, for similar assets or liabilities that are directly or indirectly observable in the marketplace. Level 3: Unobservable inputs which are supported by little or no market activity and that are financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant judgment or estimation. The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s derivative asset related to its Power Supply Agreement is classified within Level 3 of the fair value hierarchy because the fair value is estimated by utilizing valuation models and significant unobservable inputs. The Company’s only financial liability based on Level 3 inputs is a contingent consideration arrangement related to its acquisition of Whinstone. The Company is contractually obligated to pay contingent consideration payments to the Seller if Whinstone realizes certain power credits. (See Note 14, “Fair Value Measurement”) The Company will update its assumptions each reporting period based on new developments and record such amounts at fair value based on the revised assumptions until the agreements expire or contingency is resolved, as applicable. As of December 31, 2020, there were no financial assets or liabilities measured at fair value.
Property and Equipment	Property and Equipment Property and equipment is stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets. Estimated useful lives for leasehold improvements are typically the lesser of the estimated useful life of the asset or the life of the term of the lease. The estimated useful lives for all other property and equipment are as follows: Life (Years) Buildings and improvements 10-25 Miners and mining equipment 2 Machinery and facility equipment 5-7 Office and computer equipment 3
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Company accounts for intangible assets under ASC 350-30, Intangibles – Goodwill and Other Intangible assets with finite lives are comprised of customer contracts, trademarks, UL Listings and patents that are amortized on a straight-line basis over their expected useful lives, which is their contractual term or estimated useful life. Patents costs consisting of filing and legal fees incurred are initially recorded at cost. Certain patents are in the legal application process and therefore are not currently being amortized. The Company performs assessments to determine whether finite-lived classification is still appropriate at least annually. The carrying value of finite-lived assets and their remaining useful lives are also reviewed at least annually to determine if circumstances exist which may indicate a potential impairment or revision to the amortization period. A finite-lived intangible asset is considered to be impaired if its carrying value exceeds the estimated future undiscounted cash flows to be derived from it. We exercise judgment in selecting the assumptions used in the estimated future undiscounted cash flows analysis. Impairment is measured by the amount that the carrying value exceeds fair value. F-15 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) The use of different estimates or assumptions could result in significantly different fair values for our reporting units and intangible assets. As of December 31, 2021, the carrying amounts and estimated lives of the Company’s intangible assets with finite lives were as follows: ($ in thousands) Gross book value Accumulated amortization Net book value Weighted-average life (years) Customer contracts $ 6,300 $ (51 ) $ 6,249 10 Trademark 5,000 (42 ) 4,958 10 UL Listings 2,700 (19 ) 2,681 12 Patents 742 (468 ) 274 Various Finite-lived intangible assets $ 14,742 $ (580 ) $ 14,162 As of December 31, 2020, the carrying amounts of the Company’s intangible assets with finite lives were as follows: Gross book value Accumulated amortization Net book value Patents $ 713 $ (377 ) $ 336 The following table represents the total estimated amortization of intangible assets for the five succeeding years: For the years ending December 31, Estimated amortization expense 2022 $ 1,446 2023 1,446 2024 1,446 2025 1,446 2026 1,446 Thereafter 6,932 Total $ 14,162 We did not identify any impairment of our Goodwill and Other Intangible Assets during the years ended December 31, 2021, 2020 and 2019 other than our cryptocurrencies discussed below. Cryptocurrencies Cryptocurrencies, (including Bitcoin and Bitcoin cash) are included in current assets in the accompanying consolidated balance sheets. Cryptocurrencies purchased are recorded at cost and cryptocurrencies awarded to the Company through its mining activities are accounted for in connection with the Company’s revenue recognition policy disclosed above. Cryptocurrencies held are accounted for as intangible assets with indefinite useful lives. An intangible asset with an indefinite useful life is not amortized but assessed for impairment annually, or more frequently, when events or changes in circumstances occur indicating that it is more likely than not that the indefinite-lived asset is impaired. Impairment exists when the carrying amount exceeds its fair value, which is measured using the quoted price of the cryptocurrency at the time its fair value is being measured. In testing for impairment, the Company has the option to first perform a qualitative assessment to determine whether it is more likely than not that an impairment exists. If it is determined that it is not more likely than not that an impairment exists, a quantitative impairment test is not necessary. If the Company concludes otherwise, it is required to perform a quantitative impairment test. To the extent an impairment loss is recognized, the loss establishes the new cost basis of the asset. Subsequent reversal of impairment losses is not permitted. During 2021, 2020 and 2019, the Company recorded impairment charges on its cryptocurrency holdings of $36.5 million, $1.0 million and $0.8 million, respectively. Purchases of cryptocurrencies by the Company are included within investing activities in the accompanying consolidated statements of cash flows, while cryptocurrencies awarded to the Company through its mining activities are included within operating activities in the accompanying consolidated statements of cash flows. The sales of cryptocurrencies are included within investing activities in the accompanying consolidated statements of cash flows and any realized gains or losses from such sales are included in other income (expense) in the consolidated statements of operations. The Company accounts for its gains or losses in accordance with the first in first out (FIFO) method of accounting.
Impairment of long-lived assets	Impairment of long-lived assets Management reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to undiscounted future cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. During the year ended December 31, 2020, the Company determined there were indicators that would cause a 100% impairment of its Coinsquare investment and observed price changes. Therefore, the Company recorded an impairment expense of $9.4 million for its investment in Coinsquare during the year ended December 31, 2020.
Business Combinations	Business Combinations The Company applies the provisions of ASC Topic 805, Business Combinations While we use our best estimates and assumptions to accurately apply preliminary values to assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, these estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, we record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of the assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded in the consolidated statements of operations. Accounting for business combinations requires management to make significant estimates and assumptions, especially at the acquisition date, including estimates for intangible assets, contractual obligations assumed, pre-acquisition contingencies, and contingent consideration, where applicable. Although we believe the assumptions and estimates we have made have been reasonable and appropriate, they are based in part on historical experience and information obtained from management of the acquired companies and are inherently uncertain. Critical estimates in valuing certain of the intangible assets we have acquired include; future expected cash flows from customer contracts, discount rates, and estimated market changes in the value of the Power Supply Agreement, which is accounted for as a nonhedged derivative contract. Unanticipated events and circumstances may occur that may affect the accuracy or validity of such assumptions, estimates, or actual results. Acquisition-related expenses are recognized separately from the business combination and are expensed as incurred.
Investment in marketable equity securities	Investment in marketable equity securities Our investment in marketable equity securities consists entirely of common shares of Mogo, Inc. (NASDAQ: MOGO), resulting from the April and May 2021 transactions. (See Note 7, “Investments in Marketable Equity Securities”). The Company accounted for this investment in accordance with ASC 321, Investments-Equity Securities,
Lease Accounting	Lease Accounting The Company accounts for its leases under ASC 842, Leases For leases with a term exceeding 12 months, a lease liability is recorded on the Company’s consolidated balance sheet at lease commencement reflecting the present value of its fixed minimum payment obligations over the lease term. A corresponding right-of-use (“ROU”) asset equal to the initial lease liability is also recorded, adjusted for any prepaid rent and/or initial direct costs incurred in connection with execution of the lease and reduced by any lease incentives received. For purposes of measuring the present value of its fixed payment obligations for a given lease, the Company uses its incremental borrowing rate, determined based on information available at lease commencement, as rates implicit in its leasing arrangements are typically not readily determinable. The Company’s incremental borrowing rate reflects the rate it would pay to borrow on a secured basis and incorporates the term and economic environment of the associated lease. For the Company’s operating leases, fixed lease payments are recognized as lease expense on a straight-line basis over the lease term. For leases with a term of 12 months or less, any fixed lease payments are recognized on a straight-line basis over the lease term and are not recognized on the Company’s consolidated balance sheet as an accounting policy election. Leases qualifying for the short-term lease exception were insignificant. Variable lease costs are recognized as incurred.
Segment and Reporting Unit Information	Segment and Reporting Unit Information Operating segments are defined as components of an entity for which discrete financial information is available that is regularly reviewed by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources to an individual segment and in assessing performance. A committee consisting of the Company’s executives is determined to be the CODM. The Company has three operating segments as of December 31, 2021. See Note 18, “Segment Information”.
Income taxes	Income Taxes The Company accounts for income taxes under the asset and liability method, in which deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date. A valuation allowance is required to the extent any deferred tax assets may not be realizable. ASC Topic 740, Income Taxes,
Deferred Revenue	Deferred Revenue The Company recognized deferred revenue related to its acquisition of Whinstone, which consists primarily of advance payments received, and is recognized on a straight-line basis over the remaining life of the contract or upon completion of the installation of the customers’ equipment. The Company recognized upfront license fees from Ceva Santé Animale S.A. (“Licensee”) related to its exclusive license agreement (“License Agreement”), which have been recorded as deferred revenue and are being amortized over the term of the License Agreement. Amortization of the license fees totaling approximately $1.6 million began in July 2012. Contract assets consist of costs and estimated earnings in excess of billings on uncompleted contracts and unearned revenue consists of billings in excess of costs and estimated earnings on uncompleted contracts.
Cost of Revenues	Cost of Revenues • Mining: Cost of revenues consists primarily of direct production costs of mining operations, including electricity, labor, insurance and, in 2020, rent for the Oklahoma City facility and, in 2021, the variable Coinmint hosting fee, but excluding depreciation and amortization which are separately stated.   • Hosting: Cost of revenues consists primarily of direct power costs, rent and compensation costs.   • Engineering: Cost of revenues consists primarily of direct materials and labor, as well as indirect manufacturing costs.
Stock-based Compensation	Stock-based Compensation The Company accounts for share-based payment awards exchanged for services at the estimated grant date fair value of the award. Stock options issued under the Company’s long-term incentive plans are granted with an exercise price equal to no less than the market price of the Company’s stock at the date of grant and expire up to ten years from the date of grant. These options generally vest on the grant date or over a one- year period. The Company estimates the fair value of stock option grants using the Black-Scholes option pricing model and the assumptions used in calculating the fair value of stock-based awards represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Expected Term Expected Volatility Risk-Free Interest Rate F-19 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Expected Dividend The Company elected to account for forfeited awards as they occur, as permitted by ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting
Income (loss) Per Share	Income (loss) Per Share Basic net income (loss) per share (“EPS”) of common stock is computed by dividing net income (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 share units (“RSUs”) and the holdback of 70,165 shares as security for the ESS Metron sellers’ indemnification obligations under the membership interest purchase agreement from the net loss per share calculation. Since the Company has only incurred losses, 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 December 31, 2021, 2020 and 2019 because their inclusion would be anti-dilutive are as follows: December 31, 2021 2020 2019 Warrants to purchase common stock 63,000 2,061,770 3,574,257 Options to purchase common stock - 12,000 12,000 Unvested restricted stock awards 4,015,146 633,305 1,524,499 Convertible Series B preferred shares 2,199 4,199 4,199 Total 4,080,345 2,711,274 5,114,955
Recently Issued and Adopted Accounting Pronouncements	Recently Issued and Adopted Accounting Pronouncements The Company continually assesses any new accounting pronouncements to determine their applicability. When it is determined that a new accounting pronouncement affects the Company’s financial reporting, the Company undertakes a study to determine the consequences of the change to its consolidated financial statements and assures that there are proper controls in place to ascertain that the Company’s consolidated financial statements properly reflect the change. In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Financial Instruments – Credit Losses F-20 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) In December 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12” In May 2021, the FASB issued ASU 2021-04, Earnings Per Share (Topic 260), Debt-Modifications and Extinguishments (Subtopic 470-50), Compensation-Stock Compensation (Topic 718), and Derivatives and Hedging-Contracts in Entity’s Own Equity (Subtopic 815-40)

Basis of Presentation, Summar_3

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives of Property and Equipment	Property and equipment is stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets. Estimated useful lives for leasehold improvements are typically the lesser of the estimated useful life of the asset or the life of the term of the lease. The estimated useful lives for all other property and equipment are as follows: Life (Years) Buildings and improvements 10-25 Miners and mining equipment 2 Machinery and facility equipment 5-7 Office and computer equipment 3
Schedule of Carrying Amounts and Estimated Lives of Intangible Assets with Finite Lives	As of December 31, 2021, the carrying amounts and estimated lives of the Company’s intangible assets with finite lives were as follows: ($ in thousands) Gross book value Accumulated amortization Net book value Weighted-average life (years) Customer contracts $ 6,300 $ (51 ) $ 6,249 10 Trademark 5,000 (42 ) 4,958 10 UL Listings 2,700 (19 ) 2,681 12 Patents 742 (468 ) 274 Various Finite-lived intangible assets $ 14,742 $ (580 ) $ 14,162 As of December 31, 2020, the carrying amounts of the Company’s intangible assets with finite lives were as follows: Gross book value Accumulated amortization Net book value Patents $ 713 $ (377 ) $ 336
Schedule of Estimated Amortization of Intangible Asset	The following table represents the total estimated amortization of intangible assets for the five succeeding years: For the years ending December 31, Estimated amortization expense 2022 $ 1,446 2023 1,446 2024 1,446 2025 1,446 2026 1,446 Thereafter 6,932 Total $ 14,162
Schedule of Antidilutive Securities	Since the Company has only incurred losses, 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 December 31, 2021, 2020 and 2019 because their inclusion would be anti-dilutive are as follows: December 31, 2021 2020 2019 Warrants to purchase common stock 63,000 2,061,770 3,574,257 Options to purchase common stock - 12,000 12,000 Unvested restricted stock awards 4,015,146 633,305 1,524,499 Convertible Series B preferred shares 2,199 4,199 4,199 Total 4,080,345 2,711,274 5,114,955

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Prive Technologies, Inc. [Member]
Business Acquisition [Line Items]
Schedule of total consideration transferred	On February 21, 2018, the Company and Kairos, completed an asset purchase under an agreement (the “Prive Purchase Agreement”) with Prive. Upon closing of the transaction, Kairos became the owner of Prive equipment used for the mining of cryptocurrency, including, but not limited to, 3,800 Bitmain Antminer S9s. The equipment was recorded for a purchase price of approximately $19.5 million as follows (in thousands): Cash consideration $ 11,000 Fair value of common stock 8,480 Other expenses 2 Total $ 19,482
Schedule of Proforma Information for Acquisition	The following unaudited pro forma financial information summarizes the combined results of operations for Riot, Whinstone and ESS Metron as if the companies were combined as of January 1, 2020. The unaudited pro forma information does not reflect the effect of costs or synergies that may result from the acquisition. The pro forma information excludes acquisition-related costs of $21.2 million during the year ended December 31, 2021. The pro forma information does not purport to be indicative of the results of operations that actually would have resulted had the combination occurred on January 1, 2020, or of future results of the consolidated entities. This unaudited pro forma information is presented for informational purposes only and is not necessarily indicative of future operating results of the combined company (in thousands). Years Ended December 31, 2021 2020 Total revenue $ 237,650 $ 73,608 Net loss $ 9,615 $ 51,890
Whinstone US, Inc. [Member]
Business Acquisition [Line Items]
Schedule of Assets and Liabilities Acquired	During the period ended December 31, 2021, the Company continued reviewing its valuations of the assets acquired and liabilities assumed in the May 26, 2021 acquisition of Whinstone based on new information obtained about facts and circumstances that existed as of the acquisition date. During the period May 26, 2021 through December 31, 2021, due to further analysis of the operating forecast used in the acquisition date valuation, the Company recorded preliminary measurement period adjustments of approximately $90.3 million to decrease the value of its customer relationship intangible assets, $37.8 million to decrease the value of its acquisition date deferred tax liabilities and $0.2 million to increase its acquisition date right of use asset, with the corresponding adjustments to goodwill. Any necessary adjustments will be finalized within one year from the date of acquisition ($ in thousands): Cash and cash equivalents $ 10,400 Accounts receivable 1,072 Prepaid expenses and other current assets 2,176 Property and equipment 78,207 Derivative asset 13,967 Right of use asset 6,547 Security deposits 1,775 Future power credits (1) 82,953 Accounts payable (12,853 ) Accrued expenses (504 ) Deferred revenues and customer deposits (34,856 ) Operating lease liabilities (8,184 ) Total identifiable assets and liabilities acquired 140,700 Goodwill (2) 319,684 Total purchase consideration $ 460,384 ​​ (1) Future power credits of $83.0 million are associated with the contingent purchase price payable. ​​ (2) Goodwill represents the excess of total purchase consideration over the preliminary fair value of the underlying assets acquired and liabilities assumed. Goodwill is attributable to the assembled workforce of experienced personnel at Whinstone and synergies expected to be achieved from the combined operations of Riot and Whinstone. None of the goodwill recognized is expected to be deductible for tax purposes. We assigned the goodwill to our Hosting segment. See Note 18, “Segment Information”. The $460.4 million total purchase price consideration consisted of $326.2 million fair value of Riot common shares issued, a $53.0 million cash payment (including $38.1 million of debt payoff and certain Seller transaction costs), an $83.0 million contingent purchase price payable to the Seller and other net items of $(1.7 million).
Acquisition of ESS Metron [Member]
Business Acquisition [Line Items]
Schedule of Assets and Liabilities Acquired	Any necessary adjustments will be finalized within one year from the date of acquisition (in thousands): Cash and cash equivalents $ 549 Accounts receivable 9,879 Prepaid and other current assets 636 Inventory and work-in-progress 1,175 Costs and estimated earnings in excess of billings 13,205 Property and equipment 4,501 Intangible assets 14,000 Right of use asset 6,714 Accounts payable (9,235 ) Accrued expenses (1,239 ) Billings in excess of costs and estimated earnings (5,883 ) Operating lease liabilities (6,714 ) Warranty liability (116 ) Total identifiable assets and liabilities acquired 27,472 Goodwill 29,379 Total purchase consideration $ 56,851

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregated Revenue	Schedule of Disaggregated Revenue: Years Ended December 31, 2021 2020 2019 Mining $ 184,422 $ 11,984 $ 6,741 Hosting 24,546 - - Engineering 4,178 - - Other 97 97 96 Total revenue $ 213,243 $ 12,081 $ 6,837
Schedule of Contract with Customer Liability	Contract balances For the years ended December 31, 2021, 2020 and 2019, the Company did not recognize material bad-debt expense. Contract assets consist of costs and estimated earnings in excess of billings on uncompleted engineering contracts. The balance was entirely from the ESS Metron acquisition and was $9.9 million and $0 as of December 31, 2021 and 2020, respectively. The Company’s contract liabilities primarily relate to upfront payments and consideration received from customers for data center hosting, billings in excess of costs and estimated earnings on uncompleted engineering contracts and the upfront license fee generated from our legacy animal health business. The table below presents changes in the total deferred revenue liability, for the years ended December 31, 2021 and 2020 (in thousands): Years Ended December 31, 2021 2020 Beginning balance $ 776 $ 873 Acquired contract balances 34,424 - Revenue recognized from acquired contract balances (1,500 ) - Termination of an acquired customer contract (5,700 ) - Revenue recognized that was included in the beginning balance (97 ) (97 ) Ending balance $ 27,903 $ 776
Schedule of Performance Obligation	The table below presents estimated revenue expected to be recognized in the future related to the unsatisfied portion of the performance obligation at December 31, 2021 (in thousands): (in thousands) 2022 2023 2024 2025 Thereafter Total Hosting (1) 3,414 3,414 3,414 3,414 8,304 21,960 Engineering 5,264 - - - - 5,264 Total contract liabilities (2) $ 8,678 $ 3,414 $ 3,414 $ 3,414 $ 8,304 $ 27,224 ​(1) Data center hosting revenue primarily includes upfront payments which the Company generally recognizes as services are provided. ​(2) The Company elected the “right to invoice” practical expedient and therefore does not include amounts related to (1) the satisfaction of performance obligations recognized in the amount invoiced, and (2) variable consideration related to future services.

Cryptocurrencies (Tables)

Cryptocurrencies (Tables)	12 Months Ended
	Dec. 31, 2021
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Summary of Additional Information About Cryptocurrencies	The following table presents information about our cryptocurrencies (Bitcoin): December 31, 2021 December 31, 2020 Beginning balance $ 11,626 $ 3,839 Revenue recognized from cryptocurrencies mined 184,422 11,838 Proceeds from sale of cryptocurrencies (295 ) (8,298 ) Realized gain on sale/exchange of cryptocurrencies 253 5,184 Impairment of cryptocurrencies (36,462 ) (989 ) Cryptocurrencies received from sale of equipment - 52 Ending balance $ 159,544 $ 11,626

Investments in Marketable Equ_2

Investments in Marketable Equity Securities and Long-term Investments (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, All Other Investments [Abstract]
Schedule of Fair Value Shares	As of December 31, 2019, the Company evaluated its remaining interest in Tess under the guidance of ASU 2016-01 and determined it should remeasure its retained interest at fair value upon deconsolidation to establish a new cost basis. As of December 31, 2021 and 2020, 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: 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

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment consisted of the following as of December 31, 2021 and 2020 (in thousands): Life (Years) December 31, 2021 December 31, 2020 Buildings and improvements 10-25 $ 78,548 $ - Miners and mining equipment 2 87,921 14,406 Machinery and facility equipment 5-7 12,373 - Office and computer equipment 3 1,007 83 Construction in progress 113,598 - Total cost of property and equipment 293,447 14,489 Less accumulated depreciation (30,467 ) (4,346 ) Property and equipment, net $ 262,980 $ 10,143
Schedule of Purchase Agreement Commitments, Deposits Paid and Expected Delivery Timing	As of December 31, 2021, the Company had outstanding executed purchase agreements for the purchase of miners from Bitmain for a total of 30,495 new S19j-Pro model miners and 30,000 new S19XP model miners, scheduled to be delivered through December 2022, and had paid a deposit of 43% of the total purchase price. A summary of the purchase agreement commitments, deposits paid and expected delivery timing (remaining balances are payable in advance of shipping) is summarized as follows (in thousands): Agreement Date * Original Purchase Commitment Open Purchase Commitment Deposit Balance Expected Shipping April 5, 2021 $ 138,506 $ 52,838 $ 85,668 First Quarter 2022 - Fourth Quarter 2022 October 29, 2021 56,250 31,950 24,300 Second Quarter 2022 - Third Quarter 2022 November 22, 2021 32,550 21,158 11,392 Third Quarter 2022 - Fourth Quarter 2022 December 10, 2021 97,650 63,472 34,178 Third Quarter 2022 - Fourth Quarter 2022 December 24, 2021 202,860 131,859 71,001 Third Quarter 2022 - Fourth Quarter 2022 Total $ 527,816 $ 301,277 $ 226,539 * Pursuant to the Company’s agreements with Bitmain, the Company is responsible for all shipping charges incurred in connection with the delivery of the miners. The Company paid approximately $85.7 million as a deposit for the miners to be acquired under the purchase agreement, dated effective as of April 5, 2021, with Bitmain to acquire approximately 42,000 Antminer model S19j Miners, which are scheduled to be shipped in 12 batches of approximately 3,500 miners each, on a monthly basis, through October 2022.

Long-Term Assets (Tables)

Long-Term Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Deposits on Equipment	Deposits consisted of the following as of December 31, 2021 and 2020 (in thousands): December 31, 2021 December 31, 2020 Deposits on equipment Beginning balance $ 33,093 $ 1,449 Additions 274,833 33,093 Reclassification to property and equipment (46,711 ) (1,449 ) Ending Balance 261,215 33,093 Security deposits 4,955 - $ 266,170 $ 33,093

Accrued Expenses (Tables)

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Schedule of Accrued Expenses	As of December 31, 2021 and 2020, the Company’s accrued expenses consisted of the following (in thousands): December 31, 2021 December 31, 2020 Construction in progress $ 12,110 $ - Payroll and payroll taxes 5,741 415 Insurance 2,507 - Other 1,713 1,167 Total accrued expenses $ 22,071 $ 1,582

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Schedule of Lease Expense	The following summarizes quantitative information about the Company’s operating leases (dollars in thousands): Years Ended December 31, Lease cost 2021 2020 2019 Operating lease cost $ 678 $ 1,240 $ 2,378 Variable lease cost (1) 51 1,040 3,200 Operating lease expense 729 2,280 5,578 Short-term lease rent expense 19 20 17 Total rent expense $ 748 $ 2,300 $ 5,595 ​ (1) Amounts primarily include common area maintenance and utility charges not included in the measurement of right of use assets and operating lease liabilities.
Schedule of Other Information	Other information Operating cash flows from operating leases $ 435 $ 1,207 $ 2,377 Right of use assets exchanged for new operating lease liabilities $ 13,622 $ - $ 2,664 Weighted-average remaining lease term – operating leases 8.6 - 0.5 Weighted-average discount rate – operating leases 5.8 % - 10 %
Schedule of Future Minimum Operating Lease Payments	The following table represents our future minimum operating lease payments as of, and subsequent to, December 31, 2021 under ASC 842 (in thousands): Ground lease Office and other leases Total 2022 $ 942 $ 990 $ 1,932 2023 970 1,012 1,982 2024 999 1,001 2,000 2025 1,029 908 1,937 2026 1,060 823 1,883 Thereafter 3,374 4,060 7,434 Total undiscounted lease payments 8,374 8,794 17,168 Less present value discount (2,164 ) (1,565 ) (3,729 ) Present value of lease liabilities $ 6,210 $ 7,229 $ 13,439

Restricted Common Stock, Stoc_2

Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Recognized Stock-based Compensation	The Company recognized total stock-based compensation expense during the years ended December 31, 2021, 2020 and 2019, from the following categories: Years Ended December 31, 2021 2020 2019 Time-based restricted stock awards $ 4,935 $ 3,407 $ 687 Performance-based restricted stock awards 63,556 - - Stock option awards - - 58 Total stock-based compensation $ 68,491 $ 3,407 $ 745
Schedule of Unvested Performance-based Restricted Common Stock Activity	A summary of the Company’s unvested performance-based restricted common stock activity in the year ended December 31, 2021 is presented here: Number of Shares Weighted Average Grant-Date Fair Value Unvested at January 1, 2021 - $ - Granted 4,033,159 $ 36.69 Vested (393,574 ) $ 36.67 Forfeited (235,000 ) $ 36.83 Unvested at December 31, 2021 3,404,585 $ 36.68
Schedule of Unvested Time-based Restricted Common Stock Activity	A summary of the Company’s unvested time-based restricted common stock activity in the year ended December 31, 2021 is as follows: Number of Shares Weighted Average Grant-Date Fair Value Unvested at December 31, 2020 633,305 $ 1.27 Vested (232,283 ) $ 17.94 Granted 212,189 $ 33.33 Forfeited (2,650 ) $ 34.08 Unvested at December 31, 2021 610,561 $ 5.93
Schedule of Changes in Outstanding Warrants	The following is a summary of outstanding warrants for the year ended December 31, 2021: Shares Underlying Options/Warrants Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding and exercisable at December 31, 2020 2,061,770 $ 32.33 1.1 $ 6,256 Granted 63,000 $ 48.37 4.9 - Exercised (1,672,892 ) $ 1.94 - - Forfeited (388,878 ) $ 40.00 - - Outstanding and exercisable at December 31, 2021 63,000 $ 48.37 4.6 $ -

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis The Company’s assets and liabilities measured at fair value on a recurring basis consisted of the following as of the Whinstone Acquisition Date of May 26, 2021, and December 31, 2021: Fair value measured at May 26, 2021 Total carrying value at May 26, 2021 Quoted prices in active markets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Derivative asset $ 13,967 $ - $ - $ 13,967 Contingent consideration liability $ 82,953 $ - $ - $ 82,953 Fair value measured at December 31, 2021 Total carrying value at December 31, 2021 Quoted prices in active markets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Derivative asset $ 26,079 $ - $ - $ 26,079 Contingent consideration liability $ 83,928 $ - $ - $ 83,928
Schedule of Changes in Estimated Fair Value of Derivative Asset	The following table presents the changes in the estimated fair value of the derivative asset measured using significant unobservable inputs (Level 3) for the year ended December 31, 2021 (in thousands): Derivative Asset Balance as of January 1, 2021 $ - Acquisition of Whinstone 13,967 Change in fair value 12,112 Balance as of December 31, 2021 $ 26,079
Schedule of Changes in Estimated Fair Value of Liability	The following table presents the changes in the estimated fair value of our liability for contingent consideration measured using significant unobservable inputs (Level 3) for the year ended December 31, 2021 (in thousands): Contingent Consideration Liability Balance as of January 1, 2021 $ - Acquisition of Whinstone 82,953 Change in fair value 975 Balance as of December 31, 2021 $ 83,928

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of Components of Loss From Continuing Operations by Domestic and Foreign Jurisdictions	The components of the loss from continuing operations before income taxes for the years ended December 31, 2021, 2020 and 2019 are as follows (in thousands): For the years ended December 31, 2021 2020 2019 Domestic $ (7,672 ) $ (12,667 ) $ (20,446 ) Foreign — — — Loss from Continuing Operations before Income Taxes $ (7,672 ) $ (12,667 ) $ (20,446 )
Schedule of Components of Income Tax Benefit	The components of income tax benefit (expense) are as follows (in thousands): As of December 31, 2021 2020 2019 Current: US Federal $ — $ — $ — US State (254 ) — — Foreign — — — Total current benefit (expense) $ (254 ) $ — $ — Deferred: US Federal $ — $ — $ 117 US State — — 26 Foreign — — — Total deferred benefit — — 143 Total benefit (expense) for income taxes $ (254 ) $ — $ 143
Schedule of Deferred Tax Assets and (Liabilities)	The tax effects of temporary differences and tax loss and credit carry forwards that give rise to significant portions of deferred tax assets and liabilities at December 31, 2021 and 2020 are comprised of the following (in thousands): As of December 31, 2021 2020 Deferred income tax assets: Net operating loss carryforwards $ 64,394 $ 51,938 Research and development credit carryforwards 1,063 1,063 Long-term investments 3,402 - Operating lease liabilities 1,454 - Stock option expense 15,827 1,253 Impairment of mining related assets and other 10,504 803 Total deferred tax assets 96,644 55,057 Valuation allowance (59,039 ) (55,057 ) Net deferred tax assets 37,605 - Deferred income tax liabilities: Derivative asset (5,477 ) - Property and equipment and other (32,128 ) - Net deferred tax assets (liabilities) $ - $ -
Schedule of Federal Statutory Rate Reconcilition Tax Expense (Benefit)	The expected tax expense (benefit) based on the U.S. federal statutory rate is reconciled with actual tax expense (benefit) as follows (in thousands): For the years ended December 31, 2021 2020 2019 Statutory federal income tax expense (benefit) $ (1,611 ) $ (2,660 ) $ (4,293 ) State taxes, net of federal tax expense (benefit) 347 (471 ) (664 ) Nondeductible/nontaxable items 1,732 (45 ) 1,142 Tax return to provision true-up 313 (8,737 ) - State tax rate change (1,897 ) 2,231 - Other - - 195 Change in valuation allowance 1,370 9,682 3,477 Income taxes expense (benefit) $ 254 $ - $ (143 )

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Reportable Segments and Operating Income	The following table details revenue and cost of revenues for the Company’s reportable segments for the years ended December 31, 2021, 2020 and 2019, and reconciles to net income (loss) in the consolidated statements of operations (in thousands): F-51 Riot Blockchain, Inc. and Subsidiaries Notes to Consolidated Financial Statements (in thousands, except for share and per share amounts) Years Ended December 31, 2021 2020 2019 Reportable segment revenue: Revenue, net - mining $ 184,422 $ 11,984 $ 6,741 Revenue, net - hosting 24,546 - - Revenue, net - engineering 5,265 - - Other revenue 97 97 96 Eliminations (1,087 ) - - Total segment and consolidated revenue 213,243 12,081 6,837 Reportable segment cost of revenue (exclusive of depreciation and amortization shown below): Cost of revenues - mining 45,513 6,251 6,097 Cost of revenues - hosting 32,998 - - Cost of revenues - engineering 4,351 - - Eliminations (769 ) - - Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below) 82,093 6,251 6,097 Reconciling Items: Acquisition-related costs (21,198 ) - - Selling, general and administrative (87,429 ) (10,251 ) (9,159 ) Depreciation and amortization (26,324 ) (4,494 ) (119 ) Change in fair value of derivative asset 18,626 - - Change in fair value of contingent consideration (975 ) - - Realized gain on sale/exchange of cryptocurrencies 253 5,184 665 Impairment of intangible rights acquired - - (700 ) Impairment of long-term investment - (9,413 ) - Impairment of cryptocurrencies (36,462 ) (989 ) (844 ) Loss on issuance of convertible notes, common stock and warrants - - (6,155 ) Change in fair value of warrant liability - - (2,869 ) Change in fair value of convertible notes - - (3,896 ) Reversal of registration rights penalty - 1,358 - Gain on deconsolidation of Tess - - 1,139 Gain (loss) on sale of equipment - 29 - Interest income (expense) - 85 - Interest expense (296 ) - (122 ) Other income (expense) 2,378 (6 ) 874 Realized gain on sale/exchange of long-term investment 26,260 - - Unrealized loss on marketable equity securities (13,655 ) - - Current income tax expense (254 ) - - Deferred income tax benefit - - 143 Net loss $ (7,926 ) $ (12,667 ) $ (20,303 )

Liquidity and Financial Condi_2

Liquidity and Financial Condition (Details) $ / shares in Units, $ in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2021USD ($)$ / shares	Dec. 31, 2021USD ($)$ / sharesshares	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Deposits on equipment		$ 274,833	$ 33,093	$ 1,449
Reclassification to property and equipment		(46,711)	(1,449)
Remains payable to Bitmain	$ 301,300	301,300
Cash and cash equivalents	312,315	312,315	223,382	7,440	$ 225
Working capital	463,700	463,700
Stockholders' equity	1,357,320	1,357,320	277,071	26,235	$ 4,491
Accumulated deficit	237,838	237,838	229,912
Proceeds from the sale of stock		684,817	$ 264,727	24,825
2019 ATM Offering [Member] | Common Stock [Member] | H.C. Wainwright [Member]
Stockholders' equity	1,400,000	1,400,000
Maximum amount of sales shares				$ 100,000
2021 ATM Offering [Member] | Common Stock [Member] | H.C. Wainwright [Member]
Proceeds from the sale of stock	600,000
2021 ATM Offering [Member] | Common Stock [Member] | Sales Agents [Member]
Stockholders' equity	$ 600,000	$ 600,000
Commission percentage		3.00%
Commissions paid		$ 12,800
Proceeds from the sale of stock		$ 587,200
Weighted average price | $ / shares	$ 29.53	$ 29.53
Stock issued during period | shares		19,910,589
Maximum amount of sales shares		$ 600,000
Coinmint, LLC and Whinstone [Member]
Deposits on equipment		274,800
Reclassification to property and equipment		$ 46,700
Number of receipt miners		23,864

Basis of Presentation, Summar_4

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended	12 Months Ended
	Apr. 30, 2021	Jul. 31, 2012	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Sale proceeds of services				$ 213,243	$ 12,081	$ 6,837
Impairment of intangible assets						700
Amortization of license fees and milestone revenue		$ 1,600		(97)	(97)	(96)
Allowance for doubtful accounts				100
Impairment of cryptocurrencies				$ 36,462	$ 989	$ 844
Number of stock holds for shares as security				70,165
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Individual customer [Member]
Percentage concentration risk				7.50%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Seven customers [Member]
Percentage concentration risk				83.00%
Coinsquare Investment [Member]
Impairment of intangible assets				$ 9,400
Power [Member] | TXU Power Supply Agreement [Member]
Sale proceeds of services	$ 125,100
Future Power Bills [Member] | TXU Power Supply Agreement [Member] | Beginning in 2022 [Member]
Cash proceeds from services	59,700
ERCOT [Member] | Electricity [Member]
Sale proceeds of services				$ 6,500
ERCOT [Member] | Power [Member] | TXU Power Supply Agreement [Member]
Contingent sale proceeds against future remittance			$ 26,300
Whinstone [Member] | Power [Member] | TXU Power Supply Agreement [Member]
Cash proceeds from services	29,000
Power management fees	$ 10,000

Basis of Presentation, Summar_5

Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2021
Building improvements [Member]
Estimated useful lives property and equipment	10-25
Miners and Mining Equipment [Member]
Estimated useful lives property and equipment	2
Machinery and facility equipment [Member]
Estimated useful lives property and equipment	5-7
Office and computer equipment [Member]
Estimated useful lives property and equipment	3

Basis of Presentation, Summar_6

Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross book value	$ 14,742
Accumulated amortization	(580)
Net book value	14,162	$ 336
Customer contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross book value	6,300
Accumulated amortization	(51)
Net book value	$ 6,249
Weighted-average life (years)	10 years
Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Gross book value	$ 5,000
Accumulated amortization	(42)
Net book value	$ 4,958
Weighted-average life (years)	10 years
UL Listings [Member]
Finite-Lived Intangible Assets [Line Items]
Gross book value	$ 2,700
Accumulated amortization	(19)
Net book value	$ 2,681
Weighted-average life (years)	12 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross book value	$ 742	713
Accumulated amortization	(468)	(377)
Net book value	$ 274	$ 336

Basis of Presentation, Summar_7

Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Amortization of Intangible Asset) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
For the years ending December 31, Estimated amortization expense
2022	$ 1,446
2023	1,446
2024	1,446
2025	1,446
2026	1,446
Thereafter	6,932
Total	$ 14,162	$ 336

Basis of Presentation, Summar_8

Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Antidilutive Securities) (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	4,080,345	2,711,274	5,114,955
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	63,000	2,061,770	3,574,257
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	12,000
Unvested restricted stock awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of EPS	4,015,146	633,305	1,524,499
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	2,199	4,199	4,199

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 02, 2021	Mar. 26, 2018	Feb. 21, 2018	May 26, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 29, 2020
Business Acquisition [Line Items]
Aggregate cash consideration					$ 40,879
Income taxes benefit					(254)		143
Impairment of intangible rights acquired							700
Revenues					213,243	12,081	6,837
Net income (loss)					$ (7,926)	$ (12,667)	(20,303)
Number of shares issued					116,748,472	78,523,517
Customer relationships [Member]
Business Acquisition [Line Items]
Estimated useful average life	10 years
Discount rate	21.00%
Income tax rate	25.00%
Trademarks [Member]
Business Acquisition [Line Items]
Estimated useful average life					10 years
UL Listings [Member]
Business Acquisition [Line Items]
Estimated useful average life	12 years
Discount rate	15.00%
Acquisition of ESS Metron [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired	100.00%
Cash consideration net of working capital	$ 25,000
Net debt outstanding	3,700
Fair value of acquired trade receivables	$ 9,900
Revenues					$ 4,200
Acquisition related costs					2,100
Net income (loss)					200
Number of shares issued	645,248
Number of remaining shares withheld as security	70,165
Annual lease payments					900
Intangible assets					$ 14,000
Acquisition of ESS Metron [Member] | Lease One [Member]
Business Acquisition [Line Items]
Remaining lease terms					3 years 6 months
Acquisition of ESS Metron [Member] | Lease Two [Member]
Business Acquisition [Line Items]
Remaining lease terms					10 years
Acquisition of ESS Metron One [Member]
Business Acquisition [Line Items]
Number of shares acquired	715,413
Number of shares acquired value	$ 26,700
Cash payment including debt payoff	$ 30,100
Prive Technologies, Inc. [Member]
Business Acquisition [Line Items]
Common stock shares held in escrow			200,000					200,000
Common stock escrow value					$ 10,000
Net purchase price			$ 19,500
Logical Brokerage Corp [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired		92.50%
Common stock, par value		$ 9.25
Aggregate cash consideration		$ 600
Net purchase price		100
Purchase of consideration		$ 600
Income taxes benefit							100
Impairment of intangible rights acquired							$ 700
Whinstone US, Inc. [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired				100.00%
Cash consideration net of working capital				$ 80,000
Number of shares acquired				11,800,000
Number of shares acquired value				$ 326,200
Net debt outstanding				38,100
Additional consideration paid				86,000
Cash payment including debt payoff				53,000
Contingent purchase price payable				83,000
Other net				1,700
Fair value of acquired trade receivables				1,100
Fair value derivative asset discounted debt-free cash flow				14,000
Increase decrease in deferred tax liabilities				37,800
Whinstone US, Inc. [Member] | Customer relationships [Member]
Business Acquisition [Line Items]
Intangible assets				$ 90,300
Whinstone [Member]
Business Acquisition [Line Items]
Revenues					24,500
Acquisition related costs					19,100
Net income (loss)					1,200
Pro forma [Member]
Business Acquisition [Line Items]
Acquisition related costs					$ 21,200

Acquisitions (Schedule of total

Acquisitions (Schedule of total Consideration Transferred) (Details) - USD ($) $ in Thousands		Dec. 31, 2021	May 26, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill		$ 349,063
Acquisition of ESS Metron [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		549
Accounts receivable		9,879
Prepaid expenses and other current assets		636
Inventory and work-in-progress		1,175
Costs and estimated earnings in excess of billings		13,205
Property and equipment		4,501
Intangible assets		14,000
Right of use asset		6,714
Accounts payable		(9,235)
Accrued expenses		(1,239)
Billings in excess of costs and estimated earnings		(5,883)
Operating lease liabilities		(6,714)
Warranty liability		(116)
Total identifiable assets and liabilities acquired		27,472
Goodwill		29,379
Total		$ 56,851
Whinstone US, Inc. [Member]
Business Acquisition [Line Items]
Cash and cash equivalents			$ 10,400
Accounts receivable			1,072
Prepaid expenses and other current assets			2,176
Property and equipment			78,207
Derivative asset			13,967
Right of use asset			6,547
Security deposits			1,775
Future power credits	[1]		82,953
Accounts payable			(12,853)
Accrued expenses			(504)
Deferred revenues and customer deposits			(34,856)
Operating lease liabilities			(8,184)
Total identifiable assets and liabilities acquired			140,700
Goodwill	[2]		319,684
Total			$ 460,384
[1]	Future power credits of $83.0 million are associated with the contingent purchase price payable.
[2]	Goodwill represents the excess of total purchase consideration over the preliminary fair value of the underlying assets acquired and liabilities assumed. Goodwill is attributable to the assembled workforce of experienced personnel at Whinstone and synergies expected to be achieved from the combined operations of Riot and Whinstone. None of the goodwill recognized is expected to be deductible for tax purposes. We assigned the goodwill to our Hosting segment. See Note 18, “Segment Information”.

Acquisitions (Schedule of Profo

Acquisitions (Schedule of Proforma Information for Acquisition) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Combinations [Abstract]
Total revenue	$ 237,650	$ 73,608
Net loss	$ 9,615	$ 51,890

Acquisitions (Schedule of Purch

Acquisitions (Schedule of Purchase Price for the Miners) (Details) - Prive Technologies, Inc. [Member] $ in Thousands	Feb. 21, 2018USD ($)
Cash consideration	$ 11,000
Fair value of common stock	8,480
Other expenses	2
Total	$ 19,482

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Amount of remaining upfront license fee	$ 0.7	$ 0.8
Contract balances	$ 9.9	$ 0

Revenue from Contracts with C_4

Revenue from Contracts with Customers (Schedule of Disaggregated Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total Revenue	$ 213,243	$ 12,081	$ 6,837
Revenue, net - mining [Member]
Total Revenue	184,422	11,984	6,741
Data Center Hosting [Member]
Total Revenue	24,546
Revenue, net - engineering [Member]
Total Revenue	4,178
Other [Member]
Total Revenue	$ 97	$ 97	$ 96

Revenue from Contracts with C_5

Revenue from Contracts with Customers (Schedule of Contract with Customer Liability) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Beginning balance	$ 776	$ 873
Acquired contract balances	34,424
Revenue recognized from acquired contract balances	(1,500)
Termination of an acquired customer contract	(5,700)
Revenue recognized that was included in the beginning balance	(97)	(97)
Ending balance	$ 27,903	$ 776

Revenue from Contracts with C_6

Revenue from Contracts with Customers (Schedule of Performance Obligation) (Details) $ in Thousands	Dec. 31, 2021USD ($)
2022	$ 8,678	[1]
2023	3,414	[1]
2024	3,414	[1]
2025	3,414	[1]
Thereafter	8,304	[1]
Total	27,224	[1]
Hosting [Member]
2022	3,414	[2]
2023	3,414	[2]
2024	3,414	[2]
2025	3,414	[2]
Thereafter	8,304	[2]
Total	21,960	[2]
Engineering [Member]
2022	5,264
Total	$ 5,264
[1]	The Company elected the “right to invoice” practical expedient and therefore does not include amounts related to (1) the satisfaction of performance obligations recognized in the amount invoiced, and (2) variable consideration related to future services.
[2]	Data center hosting revenue primarily includes upfront payments which the Company generally recognizes as services are provided.

Cryptocurrencies (Narrative) (D

Cryptocurrencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Maximum cryptocurrency activity from Bitcoin during period		$ 100
Impairment of cryptocurrencies	$ 36,462	$ 989	$ 844

Cryptocurrencies (Summary of Ad

Cryptocurrencies (Summary of Additional Information About Cryptocurrencies) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Beginning balance	$ 11,626	$ 3,839
Revenue recognized from cryptocurrencies mined	184,422	11,838
Proceeds from sale of cryptocurrencies	(295)	(8,298)
Realized gain on sale/exchange of cryptocurrencies	253	5,184
Impairment of cryptocurrencies	(36,462)	(989)
Cryptocurrencies received from sale of equipment		52
Ending balance	$ 159,544	$ 11,626

Investments in Marketable Equ_3

Investments in Marketable Equity Securities and Long-term Investments (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 10, 2019	Feb. 28, 2018	Oct. 31, 2017	Sep. 30, 2017	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Shares issued, value					$ 669,916	$ 257,472	$ 23,829
Unrealized loss on shares exchange					13,655
Impairment of intangible assets							$ 700
Gain on sale of long term investments					26,300
Investments in marketable equity securities, at fair value					10,804
Mark-to-market unrealized gain on shares					$ 24,800
Closing price per share					$ 3.42
Tess Inc [Member]
Business Acquisition [Line Items]
Amount of Investment									$ 300
Ownership percentage	8.80%								52.00%
Shares issued, value					$ 100	100		$ 500
Research and development expense									$ 700
Intangibles								600
Impairment of intangible assets								2,100
Tess Inc [Member] | Capitalized cost [Member]
Business Acquisition [Line Items]
Impairment of intangible assets								600
Tess Inc [Member] | Goodwill [Member]
Business Acquisition [Line Items]
Impairment of intangible assets								800
Tess Inc [Member] | Research and Development Expense [Member]
Business Acquisition [Line Items]
Impairment of intangible assets								$ 700
Tess Inc [Member] | Minimum [Member]
Business Acquisition [Line Items]
Ownership percentage								52.01%
Tess Inc [Member] | Maximum [Member]
Business Acquisition [Line Items]
Ownership percentage								50.20%
Tess Inc [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Stock issued during period	23,800,000		75,000					189,000	75,000
Shares issued, value			$ 600					$ 220
Shares issued price per share			$ 8.49
Resale of shares									25,000
Shares exchanged									2,708,333
Canada, Dollars [Member] | Tess Inc [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Shares issued, value	$ 1,200
Coinsquare [Member]
Business Acquisition [Line Items]
Minority interest		$ 9,400		$ 9,400
Percentage owned		11.70%
Impairment expense						$ 9,400
Percentage of impairment of investments					100.00%
Coinsquare [Member] | Mogo Investment Agreement [Member]
Business Acquisition [Line Items]
Shares issued, value					$ 1,800
Shares exchanged					3,200,000
Unrealized loss on shares exchange					$ 13,700
Outstanding shares					3,400,000
Coinsquare [Member] | Canada, Dollars [Member]
Business Acquisition [Line Items]
Penalties and costs related to investment					$ 2,200

Investments in Marketable Equ_4

Investments in Marketable Equity Securities and Long-term Investments (Verady) (Details) - Convertible Note [Member] - Verady, LLC [Member] - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2017	Dec. 31, 2019
Investment in Convertible note	$ 0.2
Investment Maturity date	Dec. 31, 2022
Investment Interest rate	6.00%
Automatic conversion of Company's convertible note plus accrued interest		$ 0.2
Percentage owned		3.20%

Investments in Marketable Equ_5

Investments in Marketable Equity Securities and Long-term Investments (Schedule of Fair value shares) (Details) - Tess Inc [Member] $ / shares in Units, $ in Thousands	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

Property and Equipment (Narrati

Property and Equipment (Narrative) (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021USD ($)	Dec. 31, 2021USD ($)ft²	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Property, Plant and Equipment [Line Items]
Total of contract deposits		$ 266,170	$ 33,093
Deposits on equipment		274,833	33,093	$ 1,449
Reclassification to property and equipment		(46,711)	$ (1,449)
Coinmint, LLC and Whinstone [Member]
Property, Plant and Equipment [Line Items]
Refundable deposits for acquisition		$ 301,300
Pilot project [Member]
Property, Plant and Equipment [Line Items]
Equipment costs	$ 2,700
Bitmain [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired			33,646
Pro Antminers Bitmain [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired			3,043
Delivered Beginning in January 2021 [Member]
Property, Plant and Equipment [Line Items]
Delivery period of computers		through December 2022
Percentage of paid deposit		43.00%
Antminer S19j (90 TH/s) miners [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		52,500
Value of computers acquired		$ 535,000
Antminer S19XP (140 TH/s) miners [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		30,000
S19 Pro Miners [Member] | Current contract with Bitmain [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		34,608
New Antminer model S17-Pro [Member] | Current contract with Bitmain [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		30,907
Antminer S19j Miners [Member] | Bitmain [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		42,000
Deposit of miners		$ 85,700
Antminer S19j Miners [Member] | Bitmain [Member] | Per Batch [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		3,500
Antminer S19j Miners [Member] | Bitmain One [Member]
Property, Plant and Equipment [Line Items]
Delivery period of computers		through October 2022
Whinstone [Member]
Property, Plant and Equipment [Line Items]
Area of building under development | ft²		240,000
S19j Antminers [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		112,000
S19XP Miners [Member] | Delivered Beginning in January 2021 [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		30,000
S19j Miners [Member] | Delivered Beginning in January 2021 [Member]
Property, Plant and Equipment [Line Items]
Value of computers acquired		$ 389,300
Bitmain S19j Pro (100 TH/s) miners [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		9,000
Bitmain S19j XP (140 TH/s) miners [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		30,000
Bitmain S19j Pro miners [Member]
Property, Plant and Equipment [Line Items]
Number of computers acquired		30,495

Property and Equipment (Schedul

Property and Equipment (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total cost of property and equipment	$ 293,447	$ 14,489
Less accumulated depreciation	(30,467)	(4,346)
Property and equipment, net	262,980	10,143
Depreciation expense	26,100	4,300	$ 100
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost of property and equipment	$ 78,548
Estimated useful lives property and equipment	10-25
Miners and Mining Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost of property and equipment	$ 87,921	14,406
Estimated useful lives property and equipment	2
Machinery and facility equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost of property and equipment	$ 12,373
Estimated useful lives property and equipment	5-7
Office and computer equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost of property and equipment	$ 1,007	83
Estimated useful lives property and equipment	3
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Total cost of property and equipment	$ 113,598

Property and Equipment (Sched_2

Property and Equipment (Schedule of Purchase Agreement Commitments, Deposits Paid and Expected Delivery Timing) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
Property, Plant and Equipment [Line Items]
Original Purchase Commitment	$ 527,816
Open Purchase Commitment	301,277
Deposit Balance	$ 226,539
Agreement Date One [Member]
Property, Plant and Equipment [Line Items]
Agreement Date	April 5, 2021	[1]
Original Purchase Commitment	$ 138,506
Open Purchase Commitment	52,838
Deposit Balance	$ 85,668
Expected Shipping	First Quarter 2022 - Fourth Quarter 2022
Agreement Date Two [Member]
Property, Plant and Equipment [Line Items]
Agreement Date	October 29, 2021	[1]
Original Purchase Commitment	$ 56,250
Open Purchase Commitment	31,950
Deposit Balance	$ 24,300
Expected Shipping	Second Quarter 2022 - Third Quarter 2022
Agreement Date Three [Member]
Property, Plant and Equipment [Line Items]
Agreement Date	November 22, 2021	[1]
Original Purchase Commitment	$ 32,550
Open Purchase Commitment	21,158
Deposit Balance	$ 11,392
Expected Shipping	Third Quarter 2022 - Fourth Quarter 2022
Agreement Date Four [Member]
Property, Plant and Equipment [Line Items]
Agreement Date	December 10, 2021	[1]
Original Purchase Commitment	$ 97,650
Open Purchase Commitment	63,472
Deposit Balance	$ 34,178
Expected Shipping	Third Quarter 2022 - Fourth Quarter 2022
Agreement Date Five [Member]
Property, Plant and Equipment [Line Items]
Agreement Date	December 24, 2021	[1]
Original Purchase Commitment	$ 202,860
Open Purchase Commitment	131,859
Deposit Balance	$ 71,001
Expected Shipping	Third Quarter 2022 - Fourth Quarter 2022
[1]	Pursuant to the Company’s agreements with Bitmain, the Company is responsible for all shipping charges incurred in connection with the delivery of the miners.

Long-Term Assets (Narrative) (D

Long-Term Assets (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Finite-Lived Intangible Assets [Line Items]
Deposits on equipment	$ 274,833	$ 33,093	$ 1,449
Deposits	266,170	33,093
Reclassification to property and equipment	(46,711)	$ (1,449)
Security Deposit Paid	3,100
Security Deposit	5,000
Ground Lease	1,800
Bitmain S19 Pro and S19j Pro Antminers from Bitmain [Member]
Finite-Lived Intangible Assets [Line Items]
Number of computers acquired		33,646
Value of computers acquired	37,600	$ 76,100
Deposits		$ 31,900
Miners description		As of December 31, 2020, the Company had received 3,043 of the new miners, including all 1,040 model S19 miners and 2,003 model S19-Pro miners, but had not yet received 30,603 of the new miners, including 18,603 model S19-Pro miners and all 12,000 model S19j-Pro miners.
Agreement with Bitmain for acquisition of S19 Antiminers [Member]
Finite-Lived Intangible Assets [Line Items]
Number of computers acquired		3,043
Value of computers acquired		$ 6,600
Bitmain S17 Pro Antminers from Bitmain [Member]
Finite-Lived Intangible Assets [Line Items]
Number of computers acquired			4,000
Value of computers acquired			$ 6,300
Miners description			The Company had received 3,000 of these model S17-Pro miners by December 31, 2019, and, accordingly, they were recorded as assets on the Company’s consolidated balance sheet for the year ended December 31, 2019. However, 1,000 of these S17-Pro miners were not received until February 2020. Therefore, as of December 31, 2019, the Company recorded the $1.4 million paid in advance for these 1,000 model S17-Pro miners as a deposit on the accompanying consolidated balance sheet.
Bitmain S17 Pro Antminers from Bitmain outstanding miners [Member]
Finite-Lived Intangible Assets [Line Items]
Value of computers acquired		$ 31,900
S17 Pro miners [Member]
Finite-Lived Intangible Assets [Line Items]
Number of computers acquired			1,000
Deposits			$ 1,400
Tranche One [Member]
Finite-Lived Intangible Assets [Line Items]
Security Deposit Paid	1,300
Tranches Two [Member]
Finite-Lived Intangible Assets [Line Items]
Security Deposit Paid	1,800
Coinmint facility [Member]
Finite-Lived Intangible Assets [Line Items]
Deposits on equipment	$ 274,800
Number of computers acquired	23,864
Reclassification to property and equipment	$ 46,700

Long-Term Assets (Schedule of D

Long-Term Assets (Schedule of Deposits on Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Long-term Assets Schedule Of Deposits On Equipment
Beginning balance	$ 33,093	$ 1,449
Additions	274,833	33,093
Reclassification to property and equipment	(46,711)	(1,449)
Ending balance	261,215	33,093
Security deposits	4,955
Deposits	$ 266,170	$ 33,093

Accrued Expenses (Schedule of A

Accrued Expenses (Schedule of Accrued Expenses) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Construction in progress	$ 12,110
Payroll and payroll taxes	5,741	415
Insurance	2,507
Other	1,713	1,167
Total accrued expenses	$ 22,071	$ 1,582

Leases (Narrative) (Details)

Leases (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Nov. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Right of use assets	$ 13,189
Operating lease liabilities	13,439		$ 0
Abandoned leases		$ 900
Other income	$ 700

Leases (Schedule of Lease Expen

Leases (Schedule of Lease Expense) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost		$ 678	$ 1,240	$ 2,378
Variable lease cost	[1]	51	1,040	3,200
Operating lease expense		729	2,280	5,578
Short-term lease rent expense		19	20	17
Total rent expense		$ 748	$ 2,300	$ 5,595
[1]	Amounts primarily include common area maintenance and utility charges not included in the measurement of right of use assets and operating lease liabilities.

Leases (Schedule of Other Infor

Leases (Schedule of Other Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 435	$ 1,207	$ 2,377
Right of use assets exchanged for new operating lease liabilities	$ 13,622		$ 2,664
Weighted-average remaining lease term - operating leases	8 years 7 months 6 days		6 months
Weighted-average discount rate - operating leases	5.80%		10.00%

Leases (Schedule of Future Mini

Leases (Schedule of Future Minimum Operating Lease Payments) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
2022	$ 1,932
2023	1,982
2024	2,000
2025	1,937
2026	1,883
Thereafter	7,434
Total undiscounted lease payments	17,168
Less present value discount	(3,729)
Present value of lease liabilities	13,439	$ 0
Ground lease [Member]
2022	942
2023	970
2024	999
2025	1,029
2026	1,060
Thereafter	3,374
Total undiscounted lease payments	8,374
Less present value discount	(2,164)
Present value of lease liabilities	6,210
Office and other leases [Member]
2022	990
2023	1,012
2024	1,001
2025	908
2026	823
Thereafter	4,060
Total undiscounted lease payments	8,794
Less present value discount	(1,565)
Present value of lease liabilities	$ 7,229

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 12, 2020	Oct. 15, 2020	Jan. 31, 2022	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 19, 2021	Nov. 03, 2017
Class of Stock [Line Items]
Proceeds from issuance of common stock						$ 684,817	$ 264,727	$ 24,825
Proceeds from sale of common stock						669,916	257,472	23,829
Issuance expense						14,901	$ 7,255	$ 996
Prive Technologies, Inc. [Member]
Class of Stock [Line Items]
Number of commons shares held in escrow voided and cancelled							200,000
Restricted Stock [Member]
Class of Stock [Line Items]
Proceeds from issuance of common stock						$ 5,100	$ 450
Accelerated vesting number under share based arrangement							471,544
Restricted Stock [Member] | 2017 Equity Incentive Plan [Member]
Class of Stock [Line Items]
Vested restricted stock units							5,000
Stock Options [Member]
Class of Stock [Line Items]
Issuance of common stock shares exercised						10,286
Stock Options [Member] | 2019 Equity Incentive Plan [Member]
Class of Stock [Line Items]
Common stock reserved for Issuance					3,554,111	3,554,111			4,400,000
Members of our board of directors and an employee of Company [Member] | Restricted Stock [Member]
Class of Stock [Line Items]
Stock issued during period						464,021	2,048,096
Number of shares held to cover withholding taxes related to the settlement of restricted stock units						174,685	193,881
2019 private placement transaction [Member]
Class of Stock [Line Items]
Proceeds from issuance of common stock						$ 800
Stock issued during period						415,657
Connection with Cashless Exercise of Warrants [Member]
Class of Stock [Line Items]
Stock issued during period						543,686
Warrants to purchase common stock					1,257,235	1,257,235
Cashless exercise of stock options [Member]
Class of Stock [Line Items]
Stock issued during period						10,286
Issuance of common stock shares exercised						12,000
Common Stock [Member]
Class of Stock [Line Items]
Stock issued during period						24,344,057	49,932,051	8,351,762
Proceeds from sale of common stock						$ 669,916	$ 257,472	$ 23,829
Issuance of common stock shares exercised							1,492,487
Shares of restricted common stock issued							122,377
Purchase price							$ 1.94
Shares issued for acquisition						11,800,000
Common Stock Warrants [Member]
Class of Stock [Line Items]
Issuance of common stock shares exercised							1,492,487
Kairos Global Technology, Inc [Member] | Common Stock [Member]
Class of Stock [Line Items]
Conversion price										$ 6.80
Preferred stock stated value per share										$ 6.80
Number of shares of common stock issuable upon conversion										1,750,001
Whinstone [Member]
Class of Stock [Line Items]
Shares issued for acquisition						11,800,000
ESS Metron [Member]
Class of Stock [Line Items]
Shares issued for acquisition						645,248
Subsequent Event [Member] | Restricted Stock [Member]
Class of Stock [Line Items]
Proceeds from issuance of common stock			$ 8,200
Number of shares held to cover withholding taxes related to the settlement of restricted stock units			414,441
Subsequent Event [Member] | Members of our board of directors and an employee of Company [Member] | Restricted Stock [Member]
Class of Stock [Line Items]
Stock issued during period			937,530
0% Series B Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares outstanding					2,199	2,199	4,199
Conversion of stock shares converted into common stock						2,000
0% Series B Convertible Preferred Stock [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Number of shares of common stock issuable upon conversion			2,199
Common Stock [Member] | Employees [Member]
Class of Stock [Line Items]
Value of previously accrued compensation to executive, settled through issuance of common stock							$ 175,000
Common Stock [Member] | Consultant and advisory board members [Member]
Class of Stock [Line Items]
Stock issued during period							40,634
Common Stock [Member] | 2021 ATM Offering [Member] | H.C. Wainwright [Member]
Class of Stock [Line Items]
Proceeds from issuance of common stock					$ 600,000
Issuance expense					$ 12,800
Common Stock [Member] | 2021 ATM Offering [Member] | Sales Agents [Member]
Class of Stock [Line Items]
Proceeds from issuance of common stock						$ 587,200
Stock issued during period						19,910,589
Weighted average price					$ 29.53	$ 29.53
Maximum amount of sales shares						$ 600,000
Proceeds from the sale of stock net						$ 587,200
Common Stock [Member] | 2020 ATM Offering [Member] | H.C. Wainwright [Member]
Class of Stock [Line Items]
Proceeds from issuance of common stock				$ 84,800			$ 257,500
Stock issued during period				4,433,468			49,932,051
Commision paid							$ 7,300
Weighted average price				$ 19.13			$ 5.30
Maximum amount of sales shares	$ 200,000	$ 100,000
Percentage of commission	3.00%	3.00%
Number of cumulatively sold shares		30,600,000
Gross proceeds		$ 74,000
Proceeds from the sale of stock net				$ 82,700
Issuance expense				$ 2,100
Common Stock [Member] | 2019 ATM Offering [Member] | H.C. Wainwright [Member]
Class of Stock [Line Items]
Maximum amount of sales shares								$ 100,000
Exercise of Common Stock Warrants [Member] | 2019 private placement transaction [Member]
Class of Stock [Line Items]
Stock issued during period						415,657

Restricted Common Stock, Stoc_3

Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 19, 2021
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	5 years
Unvested Performance-Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 47.5
Unrecognized compensation cost, period for recognition	5 months
Restricted stock granted	4,033,159
Fair value of restricted stock granted	$ 148
Unvested Time-Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 2.3
Unrecognized compensation cost, period for recognition	3 months
Restricted stock granted	212,189	1,544,359	1,542,332
Fair value of restricted stock granted	$ 7.1	$ 2	$ 2.2
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years
Shares issued for common stock exercised	10,286
Stock Options [Member] | 2019 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved under the Plan			4,061,809
Common stock reserved for issuance	3,554,111			4,400,000

Restricted Common Stock, Stoc_4

Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants (Schedule of Stock-based) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 68,491	$ 3,407	$ 745
Restricted Stock [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	4,935	3,407	687
Performance RSU [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	63,556
Stock Options [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation			$ 58

Restricted Common Stock, Stoc_5

Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants (Schedule of Restricted Stock) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Unvested Performance-Based Restricted Stock [Member]
Number of Shares
Unvested at January 1, 2021
Granted	4,033,159
Vested	(393,574)
Forfeited	(235,000)
Unvested at December 31, 2021	3,404,585
Weighted Average Grant-Date Fair value
Unvested at January 1, 2021
Granted	36.69
Vested	36.67
Forfeited	36.83
Unvested at December 31, 2021	$ 36.68
Unvested Time-Based Restricted Stock [Member]
Number of Shares
Unvested at January 1, 2021	633,305
Granted	212,189	1,544,359	1,542,332
Vested	(232,283)
Forfeited	(2,650)
Unvested at December 31, 2021	610,561	633,305
Weighted Average Grant-Date Fair value
Unvested at January 1, 2021	$ 1.27
Granted	33.33
Vested	17.94
Forfeited	34.08
Unvested at December 31, 2021	$ 5.93	$ 1.27

Restricted Common Stock, Stoc_6

Restricted Common Stock, Stock Options, Restricted Stock Units (RSUs) and Warrants (Schedule of Award Activity) (Details) - Other common stock purchase options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Shares Underlying Options/Warrants
Outstanding, beginning	2,061,770
Granted	63,000
Exercised	(1,672,892)
Forfeited	(388,878)
Outstanding, ending	63,000	2,061,770
Exercisable	63,000
Weighted Average Exercise Price
Outstanding, beginning	$ 32.33
Granted	48.37
Exercised	1.94
Forfeited	40
Outstanding, ending	48.37	$ 32.33
Exercisable	$ 48.37
Weighted Average Remaining Contractual Term (Years)
Outstanding	4 years 7 months 6 days	1 year 1 month 6 days
Granted	4 years 10 months 24 days
Exercisable	4 years 7 months 6 days
Aggregate Intrinsic Value
Outstanding		$ 6,256
Exercisable

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of derivative asset	$ 18,626
Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of derivative asset	12,112
Significant unobservable inputs (Level 3) [Member] | Demand response programs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of derivative asset	$ 6,500
Discount rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	21.00%
Whinstone US, LLC [Member] | Discount rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	21.00%
Whinstone US, LLC [Member] | Standard & Poor's [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	2.50%

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2021	May 26, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	$ 26,079	$ 13,967
Contingent consideration liability	83,928	82,953
Quoted prices in active markets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset
Contingent consideration liability
Significant other observable inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset
Contingent consideration liability
Significant unobservable inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	26,079	13,967
Contingent consideration liability	$ 83,928	$ 82,953

Fair Value Measurements (Sche_2

Fair Value Measurements (Schedule of Changes in Estimated Fair Value of Derivative Asset) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance as of January 1, 2021
Change in fair value	18,626
Balance as of December 31, 2021	26,079
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance as of January 1, 2021
Acquisition of Whinstone	13,967
Change in fair value	12,112
Balance as of December 31, 2021	$ 26,079

Fair Value Measurements (Sche_3

Fair Value Measurements (Schedule of Changes in Estimated Fair Value of Liability) (Details) - Level 3 [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance as of January 1, 2021
Acquisition of Whinstone	82,953
Change in fair value	975
Balance as of December 31, 2021	$ 83,928

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Annual lease payments	$ 1

Income taxes (Narrative) (Detai

Income taxes (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Operating Loss Carryforwards [Line Items]
Increase (decrease) in deferred tax asset valuation allowance	$ 4
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	264.9
Portion of federal and state net operating loss carryforwards subject to an 80% limitation on taxable income, that do not expire and will carry forward indefinitely	139.7
Federal [Member] | 2026 [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	$ 125.2
Federal [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards, expiration date	Dec. 31, 2026
Federal [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards, expiration date	Dec. 31, 2037
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	$ 219.6
Portion of federal and state net operating loss carryforwards subject to an 80% limitation on taxable income, that do not expire and will carry forward indefinitely	72.5
State [Member] | 2037 [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	$ 147.1

Income taxes (Schedule of Compo

Income taxes (Schedule of Components of Loss From Continuing Operations by Domestic and Foreign Jurisdictions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (7,672)	$ (12,667)	$ (20,446)
Foreign
Loss from Continuing Operations before Income Taxes	$ (7,672)	$ (12,667)	$ (20,446)

Income taxes (Schedule of Com_2

Income taxes (Schedule of Components of Income Tax Benefit Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
US Federal
US State	(254)
Foreign
Total current benefit (expense)	(254)
Deferred:
US Federal			117
US State			26
Foreign
Total deferred benefit			143
Total benefit (expense) for income taxes	$ (254)		$ 143

Income taxes (Schedule of Defer

Income taxes (Schedule of Deferred Tax Assets and (Liabilities)) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets:
Net operating loss carryforwards	$ 64,394	$ 51,938
Research and development credit carryforwards	1,063	1,063
Long-term investments	3,402
Operating lease liabilities	1,454
Stock option expense	15,827	1,253
Impairment of mining related assets and other	10,504	803
Total deferred tax assets	96,644	55,057
Valuation allowance	(59,039)	(55,057)
Net deferred tax assets	37,605
Deferred income tax liabilities:
Derivative asset	(5,477)
Property and equipment and other	(32,128)
Net deferred tax assets (liabilities)

Income taxes (Reconciliation of

Income taxes (Reconciliation of Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Statutory federal income tax expense (benefit)	$ (1,611)	$ (2,660)	$ (4,293)
State taxes, net of federal tax expense (benefit)	347	(471)	(664)
Nondeductible/nontaxable items	1,732	(45)	1,142
Tax return to provision true-up	313	(8,737)
State tax rate change	(1,897)	2,231
Other			195
Change in valuation allowance	1,370	9,682	3,477
Income taxes expense (benefit)	$ 254		$ (143)

Animal Health License Agreeme_2

Animal Health License Agreements (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2012	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Animal Health License Agreements [Abstract]
Deferred revenue		$ 2,843	$ 97
Deferred revenue, noncurrent		19,796	679
Recognition of license fee revenue	$ 1,600	$ 100	$ 100	$ 100

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments	3
Goodwill	$ 349,063
ESS Metron acquisition [Member]
Segment Reporting Information [Line Items]
Goodwill	29,400
Whinstone Acquisition [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 260,900

Segment Information (Schedule o

Segment Information (Schedule of Reportable Segments and Operating Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reportable segment revenue:
Total Revenue	$ 213,243	$ 12,081	$ 6,837
Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below)	82,093	6,251	6,097
Reconciling Items:
Acquisition-related costs	(21,198)
Selling, general and administrative	(87,429)	(10,251)	(9,159)
Depreciation and amortization	(26,324)	(4,494)	(119)
Change in fair value of derivative asset	18,626
Change in fair value of contingent consideration	(975)
Realized gain on sale/exchange of cryptocurrencies	253	5,184	665
Impairment of intangible rights acquired			(700)
Impairment of long-term investment		(9,413)
Impairment of cryptocurrencies	(36,462)	(989)	(844)
Loss on issuance of convertible notes, common stock and warrants			(6,155)
Change in fair value of warrant liability			(2,869)
Change in fair value of convertible notes			(3,896)
Reversal of registration rights penalty		1,358
Gain on deconsolidation of Tess			1,139
Gain (loss) on sale of equipment		29
Interest income (expense)		85
Interest expense	(296)		(122)
Other income (expense)	2,378	(6)	874
Realized gain on sale/exchange of long-term investment	26,260
Unrealized loss on marketable equity securities	(13,655)
Current income tax expense	(254)
Deferred income tax benefit			143
Net income	(7,926)	(12,667)	(20,303)
Revenue, net - mining [Member]
Reportable segment revenue:
Total Revenue	184,422	11,984	6,741
Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below)	45,513	6,251	6,097
Revenue, net - hosting [Member]
Reportable segment revenue:
Total Revenue	24,546
Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below)	32,998
Revenue, net - engineering [Member]
Reportable segment revenue:
Total Revenue	5,265
Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below)	4,351
Other [Member]
Reportable segment revenue:
Total Revenue	97	97	96
Eliminations [Member]
Reportable segment revenue:
Total Revenue	(1,087)
Total segment and consolidated cost of revenues (exclusive of depreciation and amortization shown below)	$ (769)

Subsequent Events (Details)

Subsequent Events (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2022USD ($)ashares	Dec. 31, 2021USD ($)shares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)
Subsequent Event [Line Items]
Proceeds from the sale of stock		$ 684,817	$ 264,727	$ 24,825
Annual lease payments		1,000
Restricted Stock [Member]
Subsequent Event [Line Items]
Proceeds from the sale of stock		$ 5,100	$ 450
Restricted Stock [Member] | Members of our board of directors and an employee of Company [Member]
Subsequent Event [Line Items]
Stock issued during period | shares		464,021	2,048,096
Number of shares held to cover withholding taxes related to the settlement of restricted stock units | shares		174,685	193,881
Subsequent Event [Member]
Subsequent Event [Line Items]
Restricted stocks granted | shares	43,149
Restricted stocks granted, value	$ 800
Arear of land | a	100
Additional annual payments	$ 900
Annual lease payments	$ 1,000
Agreement period	12 years
Agreement commencement date	Apr. 30, 2021
Expire initial lease term	Jan. 31, 2032
Subsequent Event [Member] | 0% Series B Convertible Preferred Stock [Member]
Subsequent Event [Line Items]
Number of shares of common stock issuable upon conversion | shares	2,199
Subsequent Event [Member] | Performance based restricted stock units [Member]
Subsequent Event [Line Items]
Restricted stocks granted | shares	365,500
Restricted stocks granted, value	$ 7,300
Subsequent Event [Member] | Restricted Stock [Member]
Subsequent Event [Line Items]
Number of shares held to cover withholding taxes related to the settlement of restricted stock units | shares	414,441
Proceeds from the sale of stock	$ 8,200
Subsequent Event [Member] | Restricted Stock [Member] | Members of our board of directors and an employee of Company [Member]
Subsequent Event [Line Items]
Stock issued during period | shares	937,530