Bitmain contract amended: S21 Pro upgrade, delivery accelerated to 4Q24
Company: Cipher Mining
What the later record shows
Delivered; the record does not say when
The June 5, 2024 amendment upgraded the order to 30,364 S21 Pro miners and moved delivery up to September/October 2024. A later 10-Q says all miners under the agreement were delivered, but it does not say when.
“accelerated the delivery of the Bitmain Miners from April 2025 to September 2024 and October 2024”
2024-08-12 · Cipher Mining 10-Q filed 2024-08-13 View cached copy (2026-08-31)Live source ↗
“purchase 7.1 EH/s of miners to be delivered in the first half of 2025 (the “Future Sales and Purchase Agreement”), 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 ↗
Checked November 3, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Cipher amended its December 2023 Bitmain contract to upgrade to S21 Pro rigs and now expects delivery in 4Q24 instead of 2Q25.
Source (primary)
cipher-mining 8-K exhibit (d846288dex991.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-11-03)Live source ↗
Quote: “The Company has amended its existing December 2023 Bitmain contract to accelerate delivery and now expects rigs to arrive in 4Q24 instead of 2Q25.”
How we checked this
This claim has not yet been checked assertion-by-assertion against its source. It carries a cited source and quote, but the deeper check has not run. When it does, the result appears here whatever it says.
Additional evidence
confirms cipher-mining 8-K exhibit (d846288dex991.htm)
Quote: “The Company has amended its existing December 2023 Bitmain contract to accelerate delivery and now expects rigs to arrive in 4Q24 instead of 2Q25.”
confirms Cipher Mining 10-Q filed 2024-08-13
Quote: “accelerated the delivery of the Bitmain Miners from April 2025 to September 2024 and October 2024”
confirms Cipher Mining 10-Q filed 2025-08-07
Quote: “purchase 7.1 EH/s of miners to be delivered in the first half of 2025 (the “Future Sales and Purchase Agreement”), all of which have been delivered with no remaining amount to be paid”