Sazmining Now Sells Jack Dorsey’s Proto Immersion Hashboards
Bitcoin Magazine Sazmining Now Sells Jack Dorsey’s Proto Immersion Hashboards Block’s Proto mining hashboards are now available on Sazmining’s mining-as-a-service platform. This post Sazmining Now...
Block’s Proto mining hashboards are now available on Sazmining’s mining-as-a-service platform.
Sazmining announced Thursday that it is now selling Proto’s immersion hashboards directly to individual and institutional buyers through its mining-as-a-service platform. Previously, the hardware was mostly in the hands of large-scale operators.
Each hashboard delivers roughly 200 TH at around 15 J/TH, and buyers own them outright while Sazmining handles deployment, monitoring and maintenance at a US facility. Mining rewards go straight to the owner’s wallet.
The move follows a multi-megawatt supply deal between Sazmining and Proto — the bitcoin mining arm of Jack Dorsey’s Block (NYSE: XYZ) — which both companies expect to expand as demand grows.
“Because of our aligned-incentive model, Sazmining only earns when we produce bitcoin for our clients,” said Kent Halliburton, CEO and co-founder of Sazmining.
He also pitched mining as a form of bitcoin acquisition diversification: rather than paying the market price on the day of purchase, a miner’s costs are spread across the machine’s working life.
Wyoming-based Sazmining, founded in 2018, operates renewable-powered facilities across the US, Paraguay, and Norway. It says its fleet runs more than 20 percentage points ahead of the Bitcoin network’s carbon-free share.
Proto is Jack Dorsey’s Block’s bitcoin mining play. The Twitter founder has spent years arguing bitcoin is the foundation of “a more open financial system,” funding everything from Cash App’s buy-and-send rails to the Bitkey self-custody wallet, and he framed mining as the obvious missing piece back in 2021: “Bitcoin mining should be as easy as plugging a rig into a power source.”
Block formally announced it was building an open bitcoin mining system in January 2022, with the stated aim of making mining “more distributed and efficient.”
Asanat Analysis — Why it matters
Sazmining's integration of Block's Proto immersion hashboards signals a shift toward specialized hardware in retail mining. Immersion cooling—circulating liquid directly around chips—improves efficiency by 10-20% versus air cooling and reduces operational costs. By offering these as a managed service, Sazmining lowers barriers to entry for individual miners who lack capital or technical expertise to run immersion systems independently.
This move reflects Block's broader hardware ambitions under Dorsey's prior leadership, positioning mining equipment as a revenue line beyond Square/Cash App payments. The availability through a third-party MaaS platform rather than Block's own infrastructure suggests either market validation (third parties see value) or excess capacity Block is monetizing. It also indicates maturation of the mining hardware market—specialized, high-efficiency gear is now commoditized and bundled into service offerings rather than sold as exotic tech.
For the sector, this normalizes immersion cooling at a scale where consumer-accessible mining platforms can absorb it. Success here could pressure other hardware vendors (Antminer, Avalon) to offer competitive efficiency specs or encourage more MaaS platforms to differentiate via hardware quality rather than just electricity rates.