Bitmain mining rig delivery completion
Company: Cipher Mining
What the later record shows
Delivered; the record does not say when
Filings from August 2025 say the Bitmain miners were delivered, and Bitmain S21 XP rigs from the recent order were deployed by July 2025. No passage states the date delivery was completed.
“all of which have been delivered with no remaining amount to be paid”
2025-08-06 · Cipher Mining 10-Q filed 2025-08-07 View cached copy (2026-08-31)Live source ↗
“as of July 2025 with Black Pearl Phase I 150 MW deployment of delivered Bitmain S21 XP rigs from recent purchase order”
2025-08-06 · cipher-mining 8-K exhibit (ciphermining_businessupd.htm) View cached copy (2026-10-08)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
All miners remaining under Bitmain agreement will be delivered by June 23, 2025
Source (primary)
Cipher Mining 424B5 filed 2025-05-23 (SEC EDGAR, sec_filing)
View cached copy (2026-08-31)Live source ↗
Quote: “The 2025 Amendment provides that all miners remaining to be delivered under the Original Agreement will be delivered by June 23, 2025”
How we checked this
Checked on October 11, 2026. The cited source supports every part of this claim.
The document states that the 2025 Amendment sets a June 23, 2025 delivery deadline for all remaining miners.
Confirmed in the source:
- Under the 2025 Amendment to the Bitmain agreement, all miners remaining to be delivered will be delivered by June 23, 2025
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1819989/000119312525125868/d876435d424b5.htm) in full (210,464 characters, retrieved August 31, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Cipher Mining 424B5 filed 2025-05-23
Quote: “The 2025 Amendment provides that all miners remaining to be delivered under the Original Agreement will be delivered by June 23, 2025”
confirms Cipher Mining 10-Q filed 2025-08-07
Quote: “all of which have been delivered with no remaining amount to be paid”
confirms cipher-mining 8-K exhibit (ciphermining_businessupd.htm)
Quote: “as of July 2025 with Black Pearl Phase I 150 MW deployment of delivered Bitmain S21 XP rigs from recent purchase order”