Company: CIFRW
Filing Date: 2025-02-25
Form Type: S-8
Source: 0001193125-25-035270
Chunk: 2

Company: Cipher Mining Inc.
Filing Date: 2025-02-25
Form: S-8
Chunk 2
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 to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed
document which also is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this
Registration Statement.

Item 8. Exhibits.

| Exhibit 
 Number  |     |                                                                                                                                                                           |
| 5.1*    |     | Opinion of Davis Polk & Wardwell, LLP.                                                                                                                                    |
| 23.1*   |     | Consent of Davis Polk & Wardwell, LLP (included in Exhibit 5.1).                                                                                                          |
| 23.2*   |     | Consent of Marcum LLP, independent registered public accounting firm.                                                                                                     |
| 24.1*   |     | Power of Attorney (included on signature page).                                                                                                                           |
| 99.1    |     | Cipher Mining Inc. 2021 Incentive Award Plan (incorporated by reference to Exhibit 10.8 to the Current Report on Form 8-K (File No. 001-39625) filed on August 31, 2021). |
| 107.1*  |     | Filing Fee Table                                                                                                                                                          |

| * | Filed herewith. |

SIGNATURES Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in New York, New York, on this 25 thday of February, 2025.

| CIPHER MINING INC. |     |                |     |                         |
| By:                |     | /s/ Tyler Page |     |                         |
|                    |     | Name:          |     | Tyler Page              |
|                    |     | Title:         |     | Chief Executive Officer |

POWER OF ATTORNEY Each of the undersigned officers and directors of the registrant hereby severally constitutes and appoints Tyler Page, Edward Farrell and William Iwaschuk, and each of them singly (with full power to each of them to act alone), as his or her true and lawful attorneys-in-factand agents, with full power of substitution and resubstitution in each of them,