Optional Bitmain Antminer T21 Miners Purchase (2024)
Company: Cipher Mining
The claim, verbatim
Cipher Mining has an option (exercisable in 2024) to purchase 45,706 additional Antminer T21 miners from Bitmain for $121,577,960 ($14 per terahash), though the company has no obligation to exercise this option
Source (primary)
Cipher Mining 8-K filed 2023-12-18 (SEC EDGAR, sec_filing)
View cached copy (2026-08-31)Live source ↗
Quote: “The Company also has the option, but not an obligation, under the Agreement to purchase 45,706 additional Antminer T21 miners ("the 2024 Miners"), which it may exercise in whole or in part, in one or more transactions, in 2024. The purchase price for the 2024 Miners under the Agreement is $121,577,960, representing a $14/T unit price”
How we checked this
Checked on September 18, 2026. The cited source supports every part of this claim.
The filing states that Cipher may, but is not obligated to, buy 45,706 additional T21 miners in 2024 for $121,577,960 at $14/T.
Confirmed in the source:
- Cipher Mining has an option to purchase 45,706 additional Antminer T21 miners from Bitmain
- The option is exercisable in 2024
- The purchase price for these optional miners is $121,577,960
- The price represents a $14 per terahash unit price
- The company is not obligated to exercise the option
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1819989/000095017023070948/cifr-20231216.htm) in full (5,221 characters, retrieved August 31, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Cipher Mining 8-K filed 2023-12-18
Quote: “The Company also has the option, but not an obligation, under the Agreement to purchase 45,706 additional Antminer T21 miners ("the 2024 Miners"), which it may exercise in whole or in part, in one or more transactions, in 2024. The purchase price for the 2024 Miners under the Agreement is $121,577,960, representing a $14/T unit price”