Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Dec. 31, 2020
Apr. 27, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description Riot Blockchain, Inc. (“Riot Blockchain,” “Riot,” the “Company,” “we,” “us,” “our,” or the “Registrant”) is filing this Amendment No. 1 on Form 10-K/A (this “Amendment No. 1”) to amend its Annual Report on Form 10-K for the fiscal year ended December 31, 2020 that was originally filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 31, 2021 (the “Original Form 10-K”). We are filing this Amendment No. 1 to provide the information required by Part III of Form 10-K previously omitted from the Original Form 10-K in accordance with General Instruction G.(3) to Form 10-K. This Amendment No. 1 also amends Item 15 of Part IV of the Original Form 10-K solely to include as exhibits the new certifications required by Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Because no financial statements have been included in this Amendment No. 1 and this Amendment No. 1 does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. We are not including the certifications under Section 906 of the Sarbanes-Oxley Act of 2002 (“SOX”) as no financial statements are being filed with this Amendment No. 1. Except as expressly stated, this Amendment No. 1 does not reflect events occurring after the filing of the Original Form 10-K or modify or update in any way any of the other items or disclosures contained in the Original Form 10-K, including, without limitation, the consolidated financial statements and the related footnotes, which continue to speak only as of the date the Original Form 10-K was filed. Accordingly, this Amendment No. 1 should be read in conjunction with the Original Form 10-K and the Company’s other filings with the SEC subsequent to the filing of the Original Form 10-K.    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020    
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 202 6th Street    
Entity Address, Address Line Two Suite 401    
Entity Address, City or Town Castle Rock    
Entity Address, State or Province CO    
Entity Address, Postal Zip Code 80104    
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 Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 77,700,000
Entity Common Stock, Shares Outstanding   84,144,732  
ICFR Auditor Attestation Flag false