Bitdeer Overtakes MARA: Surging to #1 Public Bitcoin Miner with 71 EH/s Hashrate Dominance

Bitdeer Technologies is now the top dog among publicly traded Bitcoin miners, beating out MARA Holdings. By the end of December 2025, they had a total hashrate of 71 EH/s. This beats MARA's 61.7 EH/s. This jump for Bitdeer is all because of their fast rollout of their own SEALMINER A2 mining machines. In December alone, Bitdeer made 636 BTC from their own mining, which is a crazy 339% jump from last year. This shows how good their tech is and how fast they're growing. Bitdeer's own mining hashrate is 55.2 EH/s, which is about 6% of the whole global Bitcoin network hashrate. They say their SEALMINER chips are super efficient, getting 6–7 J/TH at the chip level. That's way better than MARA's average of around 19 J/TH. Bitdeer has a smaller Bitcoin stash with 2,017 BTC, while MARA has over 55,000 BTC. But Bitdeer sells their mined coins to get cash, which they're using to build AI stuff all over the world. Bitdeer is doing things differently than MARA, who like to hold onto their Bitcoin and use Bitmain ASICs. Bitdeer has 1,658 MW of power already running and another 1,344 MW being built in places like Canada, Ethiopia, Norway, Ohio, Tennessee, and Washington. They're really pushing into AI computing while still growing their mining super-fast (229% increase in hashrate from last year). Experts think this plan of having their own mining gear and expanding into AI puts Bitdeer in a good spot to be the leader in the public miner space for a long time. People are still arguing about whether total hashrate or energized capacity is the best way to measure who's number one.