Bitmain rig delivery for Black Pearl by June 23, 2025
Company: Cipher Mining - Project: Black Pearl Facility
What the later record shows
Delivered; the record does not say when
An August 2025 update describes Black Pearl Phase I as running on delivered Bitmain S21 XP rigs from the recent purchase order, and the 10-K says mining at Black Pearl began in June 2025. Neither passage says the rigs arrived by June 23, 2025, so on-time delivery cannot be confirmed.
“Black Pearl Phase I 150 MW deployment of delivered Bitmain S21 XP rigs from recent purchase order and previously utilized rigs from the Odessa site”
2025-08-06 · cipher-mining 8-K exhibit (ciphermining_businessupd.htm) View cached copy (2026-10-08)Live source ↗
“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 14, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
The amended Bitmain purchase agreement includes an updated delivery schedule allowing rig delivery by June 23, 2025, which Cipher aims to use to accelerate its rig deployment timeline and offset a portion of expected tariffs.
Source (primary)
cipher-mining 8-K exhibit (d876438dex991.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-10-14)Live source ↗
Quote: “The Original Agreement has been amended to include an updated delivery schedule that allows for rig delivery by June 23, 2025.”
How we checked this
Checked on October 16, 2026. The cited source supports every part of this claim.
The press release states the June 23, 2025 delivery schedule and Cipher's stated aims for the amendment.
Confirmed in the source:
- The Bitmain purchase agreement was amended to include an updated delivery schedule
- The updated schedule allows for rig delivery by June 23, 2025
- Through the amendment, Cipher aims to accelerate its rig deployment timeline
- Through the amendment, Cipher aims to offset a portion of expected tariffs
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1819989/000119312525123159/d876438dex991.htm) in full (11,267 characters, retrieved October 14, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms cipher-mining 8-K exhibit (d876438dex991.htm)
Quote: “The Original Agreement has been amended to include an updated delivery schedule that allows for rig delivery by June 23, 2025.”
confirms Cipher Mining 10-K filed 2026-02-24
Quote: “We commenced mining bitcoin at the Black Pearl data center in June 2025 and ramped up to 150 MW of capacity by September 2025.”
confirms cipher-mining 8-K exhibit (ciphermining_businessupd.htm)
Quote: “Black Pearl Phase I 150 MW deployment of delivered Bitmain S21 XP rigs from recent purchase order and previously utilized rigs from the Odessa site”