Company: CIFRW
Filing Date: 2025-03-03
Form Type: S-3ASR
Source: 0001193125-25-044253
Chunk: 28

Company: Cipher Mining Inc.
Filing Date: 2025-03-03
Form: S-3ASR
Chunk 28
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 claim for indemnification against such liabilities (other
than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

II-4

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, State of New York, on the 3 rdday of March 2025.

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

II-5

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, for him or her and in his or her name, place and stead, and in any and all capacities, to file and sign any and all amendments, including post-effective amendments, to this registration statement and any other registration statement for the same offering that is to be effective under Rule 462(b) of the Securities Act of 1933, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-factand agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith and about the premises as fully to all intents and purposes as he or she might or could do in