Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Nov. 08, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name Riot Blockchain, Inc.  
Entity Central Index Key 0001167419  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2019  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   24,731,215
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Incorporation State Country Code NV  
Entity File Number 001-33675