Agreement to purchase 27,000 Antminer S19j Pro miners from Bitmain
Company: Cipher Mining
What the later record shows
Delivered late · happened December 31, 2022
Only 12,953 of the 27,000 Bitmain miners had arrived by the September 30, 2022 deadline. All had been received by December 31, 2022.
“which were expected to be delivered in nine batches on a monthly basis between January 2022 and September 2022. As of September 30, 2022, 12,953 miners have been received.”
2022-11-13 · Cipher Mining 10-Q filed 2022-11-14 View cached copy (2026-09-13)Live source ↗
“purchased a total of 27,000 Antminer S19j Pro (100 TH/s) (“S19j Pro”) miners and had received 27,035 miners from Bitmain at our data centers in Texas as of December 31, 2022”
2023-03-13 · Cipher Mining 10-K filed 2023-03-14 View cached copy (2026-09-13)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
Agreement to purchase 27,000 Antminer S19j Pro (100 TH/s) miners with expected delivery in nine monthly batches between January 2022 and September 2022
Source (primary)
Cipher Mining 10-K filed 2022-03-04 (SEC EDGAR, sec_filing)
View cached copy (2026-09-27)Live source ↗
Quote: “entered into an agreement with Bitmain Technologies Limited ("Bitmain") to purchase 27,000 Antminer S19j Pro (100 TH/s) miners, which are expected to be delivered in nine batches on a monthly basis between January 2022 and September 2022”
How we checked this
Checked on October 12, 2026. The cited source supports every part of this claim.
The 10-K's business overview states the Bitmain purchase agreement, the 27,000-unit quantity, the model, and the nine-batch monthly delivery window exactly as claimed.
Confirmed in the source:
- Cipher entered into an agreement with Bitmain Technologies Limited in August 2021 to purchase 27,000 Antminer S19j Pro (100 TH/s) miners
- The Bitmain miners are expected to be delivered in nine monthly batches between January 2022 and September 2022
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1819989/000095017022002861/cifr-20211231.htm) in full (509,143 characters, retrieved September 27, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Cipher Mining 10-K filed 2022-03-04
Quote: “entered into an agreement with Bitmain Technologies Limited ("Bitmain") to purchase 27,000 Antminer S19j Pro (100 TH/s) miners, which are expected to be delivered in nine batches on a monthly basis between January 2022 and September 2022”
confirms Cipher Mining 10-K filed 2023-03-14
Quote: “purchased a total of 27,000 Antminer S19j Pro (100 TH/s) (“S19j Pro”) miners and had received 27,035 miners from Bitmain at our data centers in Texas as of December 31, 2022”
confirms Cipher Mining 10-Q filed 2022-11-14
Quote: “which were expected to be delivered in nine batches on a monthly basis between January 2022 and September 2022. As of September 30, 2022, 12,953 miners have been received.”