Name of Subsidiary

Jurisdiction

Alborz LLC

Delaware

Alborz Mining LLC

Delaware

Bear LLC

Delaware

Bear Mining 1 LLC

Delaware

Bear Mining 2 LLC

Delaware

Chief Mining LLC

Delaware

Chief Mountain LLC

Delaware

Cipher Black Pearl LLC

Delaware

Cipher Mining (Canada) Inc.

Canada

Cipher Mining Infrastructure LLC

Delaware

Cipher Mining Technologies Inc.

Delaware

Cipher Operations and Maintenance LLC

Delaware

Cipher Red Dragon Limited

Hong Kong

Cipher Technology Inc.

Delaware

CMO Mining LLC

Delaware

Odessa Mining LLC

Delaware