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Bitdeer (NASDAQ: BTDR) reported a proprietary hashrate of 58 EH/s in December, a surge that places the Singapore-headquartered miner in direct competition with industry leaders MARA, CleanSpark, and IREN.
The company mined 636 bitcoin in December 2025, a 339% increase from the same period last year.
The production jump was driven by the aggressive deployment of its proprietary SEALMINER rigs, pushing its self-mining capacity to 55.2 EH/s, as Bitdeer replaces older ASICs with its own units.
Bitdeer’s latest figures narrow the gap significantly with its largest rivals. By comparison, CleanSpark (NASDAQ: CLSK) produced 622 bitcoin in December with an operational hashrate of 50.0 EH/s. MARA (NASDAQ: MARA) reported an implied hashrate of 60.4 EH/s in its third-quarter earnings for 2025. IREN (NASDAQ: IREN) also achieved 50 EH/s last year before pausing to pursue its AI ambitions.
In December, Bitdeer advanced the development of its next-generation SEAL04 chips. The SEAL04-1 chip demonstrated power efficiency of 6-7 joules per terahash (J/TH) in recent verification tests. Mass production for this chip is targeted for the first quarter of 2026.
The company also sold approximately 1.4 EH/s of SEALMINER A2 units to external parties during the month.
Beyond bitcoin mining, Bitdeer began testing high-performance computing equipment in Southeast Asia. The firm deployed eight units of NVIDIA GB200 systems in Malaysia in December.
Potential customers have started proof-of-concept validation for these systems. Bitdeer expects to launch the cloud service publicly in January 2026. Management is also evaluating data center leasing opportunities in the United States to deploy additional GPUs for American customers by the first quarter of 2026.
Bitdeer held 2,017 bitcoin as of Dec. 31. The company manages a total global electrical capacity of 1,658 megawatts across sites in the United States, Norway, and Bhutan.
Construction continues at several key facilities. A 570-megawatt site in Clarington, Ohio, is under contract with a local utility and expected to come online by the third quarter of 2026. In Norway, the company is advancing design work to convert its Tydal facility for AI data center use.
Header image by Nihar Modi via Unsplash.
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