Black Pearl Phase I hashrate upgrade
Company: Cipher Mining - Project: Black Pearl Facility
What the later record shows
Outcome not yet confirmed
The passages say capacity ramped to 150 MW by September 2025, but none reports Black Pearl reaching ~10.0 EH/s or the Canaan A15 Pro rigs being deployed. The rigs were later classified as held for sale.
“We commenced mining bitcoin at the Black Pearl data center in June 2025 and ramped up to 150 MW of capacity by September 2025.”
2026-02-23 · Cipher Mining 10-K filed 2026-02-24 View cached copy (2026-08-31)Live source ↗
Checked October 10, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Cipher purchased ~1.5 EH/s of Canaan A15 Pro rigs, which will raise Black Pearl Phase I hashrate to ~10.0 EH/s and efficiency to ~13.9 J/TH in Q3 2025.
Source (primary)
cipher-mining 8-K exhibit (ciphermining_businessupd.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-10-08)Live source ↗
Quote: “Purchased ~1.5 EH/s of Canaan A15 Pro rigs, which will increase Black Pearl Phase I hashrate to ~10.0 EH/s in Q3 2025”
How we checked this
Checked on October 13, 2026. The cited source supports every part of this claim.
The presentation reports the ~1.5 EH/s Canaan A15 Pro purchase and projects Black Pearl Phase I at ~10.0 EH/s and ~13.9 J/TH once the new rigs arrive in Q3 2025.
Confirmed in the source:
- Cipher purchased ~1.5 EH/s of Canaan A15 Pro rigs
- The new rigs will increase Black Pearl Phase I hashrate to ~10.0 EH/s in Q3 2025
- With the new rigs arriving in Q3 2025, Black Pearl Phase I efficiency will improve to ~13.9 J/TH
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1819989/000181998925000079/ciphermining_businessupd.htm) in full (19,841 characters, retrieved October 8, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms cipher-mining 8-K exhibit (ciphermining_businessupd.htm)
Quote: “Purchased ~1.5 EH/s of Canaan A15 Pro rigs, which will increase Black Pearl Phase I hashrate to ~10.0 EH/s in Q3 2025”