Sale of WindHQ joint venture interests
Company: Cipher Mining
The claim, verbatim
Sold 49% interests in three 40 MW bitcoin mining data centers (Alborz, Bear, and Chief facilities) in WindHQ joint venture to Canaan U.S. Inc. on February 19, 2026.
Source (primary)
Cipher Mining 10-K filed 2026-02-24 (SEC EDGAR, sec_filing)
View cached copy (2026-08-31)Live source ↗
Quote: “On February 19, 2026, we sold our 49% interests in our WindHQ JV sites to Canaan U.S. Inc.”
How we checked this
Checked on September 16, 2026. The cited source supports every part of this claim.
The filing identifies the three 40 MW WindHQ joint venture facilities and the 49% interests, and reports the February 19, 2026 sale of those interests to Canaan U.S. Inc.
Confirmed in the source:
- Cipher held 49% equity interests in three 40 MW bitcoin mining data centers held through a joint venture with WindHQ LLC
- The three facilities are the Alborz, Bear and Chief data centers
- Cipher sold its 49% interests in the WindHQ JV sites to Canaan U.S. Inc. on February 19, 2026
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1819989/000181998926000009/cifr-20251231.htm) in full (477,779 characters, retrieved August 31, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Cipher Mining 10-K filed 2026-02-24
Quote: “On February 19, 2026, we sold our 49% interests in our WindHQ JV sites to Canaan U.S. Inc.”