This week, NiceHash mined Bitcoin blocks 932129 and 932167 without showing a familiar pool label, fueling solo-miner speculation. The missing tag on mempool explorers led observers to assume an independent miner had won the blocks.
The apparent anonymity came from how metadata displayed, not from hidden attribution, company officials said, and the initial social post is linked here as an archive. (a post)
Sasa Coh, CEO of NiceHash, said the blocks were part of internal testing tied to a new product. He added, “The misconception here is only that the blocks were not labeled by mempool, though they were tagged with NiceHashMining.”
Coh declined to share technical details ahead of launch but said the tests related to upcoming features. He also said, “We did not want to stir up any speculation.”
Ed. note: block tags are metadata and not provable protocol markers, which can mislead observers. Two more blocks from the same operator appeared on Thursday, visible on the block explorer. (block details)
Solo mining remains possible but uncommon for large operations. Coh said, “Solo mining is possible, and it provides a lot of fun.” He noted, “Easy Mining at Nicehash was involved in 17 out of the total 36 mined solo blocks in 2025.” Relevant data on solo blocks is publicly available. (data shows)
