Exhibit 31.3
CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
(with respect to Amendment No. 1 to the Original Form 10-K)
I, Jason Les, certify that:
| 1. | I have reviewed this Amendment No. 1 on Form 10-K/A to the Annual Report on Form 10-K for the year ended December 31, 2021 of Riot Blockchain, Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Dated: May 2, 2022 | /s/ Jason Les |
|
Jason Les, Chief Executive Officer (principal executive officer) |