EX-32 4 ex32.htm EXHIBIT 32
EXHIBIT 32
CERTIFICATION PURSUANT
TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report on Form 10-Q (the "Report") of Riot Blockchain, Inc. (the "Company") for the quarter ended March 31, 2018, each of the undersigned John O’Rourke and Robby Chang, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of the undersigned's knowledge and belief:

| (1) | the Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| (2) | the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. |
May 17, 2018 |  |
| /s/ John O’Rourke |
| John O’Rourke, Chief Executive Officer and Chairman of the Board (Principal Executive Officer) |
May 17, 2018 |  |
| /s/ Robby Chang |
| Robby Chang, Chief Financial Officer (Principal Financial and Accounting Officer) |