Cipher Mining Inc. (NASDAQ: CIFR) announced on October 8, 2025 that it has released its unaudited production and operations update for September 2025. The update reports September power sales estimates equivalent to approximately 7 Bitcoin and 19 BTC mined at joint‑venture data centers, with the company selling about 158 BTC during the month and ending with a balance of roughly 1,500 BTC.
The company highlighted that Black Pearl Phase I has reached full completion. Following the deployment of all latest‑generation mining rigs, Cipher achieved a total self‑mining hashrate of approximately 23.6 EH/s, with the latest‑generation miners delivering about 10.1 EH/s of self‑mining hashrate. Construction is also underway at the Barber Lake site, further expanding Cipher’s mining footprint.
Cipher’s treasury management continues to be robust, as evidenced by the sale of 158 BTC in September and the maintenance of a 1,500 BTC balance. The operational update underscores Cipher’s continued focus on scaling its Bitcoin mining capacity while simultaneously advancing its high‑performance computing (HPC) strategy, positioning the company for sustained growth in both markets.
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