Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Mar. 31, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description On March 16, 2022, Riot Blockchain, Inc. (“Riot Blockchain,” “Riot,” the “Company,” “we,” “us,” “our,” or the “Registrant”) filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (the “Original Form 10-K”) with the U.S. Securities and Exchange Commission (the “SEC”). The Original Form 10-K omitted certain disclosures under Part III, Items 10, 11, 12, 13 and 14 of Form 10-K in reliance on General Instruction G(3) to Form 10-K, which provides that such information may be either incorporated by reference from the registrant’s definitive proxy statement or included in an amendment to Form 10-K, in either case filed with the SEC not later than 120 days after the end of the fiscal year.   We currently do not expect to file our definitive proxy statement for the 2022 annual meeting of our stockholders within 120 days of December 31, 2021. Accordingly, we are filing this Amendment No. 1 to the Original Form 10-K (this “Amendment No. 1”) solely to:   ·amend Part III, Items 10 (Directors, Executive Officers and Corporate Governance), 11 (Executive Compensation), 12 (Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters), 13 (Certain Relationships and Related Transactions, and Director Independence) and 14 (Principal Accountant Fees and Services) of the Original Form 10-K to include the information required to be disclosed under such Items; ·delete the reference on the cover of the Original Form 10-K regarding the incorporation by reference into Part III of the Original Form 10-K of portions of our definitive proxy statement to be delivered to stockholders and filed with the SEC in connection with the 2022 annual meeting of our stockholders; and ·file new certifications of our principal executive officer and principal financial officer as exhibits to this Amendment under Item 15 of Part IV hereof, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). This Amendment No. 1 does not otherwise change or update any of the disclosures set forth in the Original Form 10-K, and, except as expressly stated herein, does not reflect events occurring after the filing of the Original Form 10-K. This Amendment No. 1 modifies and amends the Original Form 10-K, and should be read in conjunction with the Original Form 10-K. References to “this Annual Report” contained in this Amendment No. 1 refer to the Original Form 10-K, as modified and amended by this Amendment No. 1. Capitalized terms not otherwise defined in this Amendment No. 1 have the meanings given to them in the Original Form 10-K.    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Current Fiscal Year End Date --12-31    
Entity File Number 001-33675    
Entity Registrant Name RIOT BLOCKCHAIN, INC.    
Entity Central Index Key 0001167419    
Entity Tax Identification Number 84-1553387    
Entity Incorporation, State or Country Code NV    
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    
Security Exchange Name 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    
Entity Shell Company false    
Entity Public Float     $ 3,100
Entity Common Stock, Shares Outstanding   117,304,304  
ICFR Auditor Attestation Flag true    
Auditor Firm ID 688    
Auditor Name Marcum LLP    
Auditor Location CA