Block's Proto: Disrupting ASIC Miner Design with Modular Hardware and Open-Source Software

Block, founded by Jack Dorsey, has launched its flagship ASIC miner, Rig, with a focus on modular mining rigs and open-source software to improve fleet management, upgrade costs, and uptime for operators. The miner's technical design and hardware are modular, and the company is offering different configurations to cater to various power costs and financing needs. Block's Perry Hothi emphasizes that the company's approach is not just about efficiency and price but also about profitability.

Title: Block Unveils Modular Bitcoin Miner Rig with Focus on Profitability and Fleet Management

Block, Inc., the U.S.-based financial technology company founded by Jack Dorsey and Jim McKelvey, has launched its flagship ASIC miner, Rig, with a focus on modular mining rigs and open-source software to improve fleet management, upgrade costs, and uptime for operators [1]. The company's latest innovation, Proto Rig, is designed to be an infrastructure solution rather than a disposable hardware model, addressing key pain points in the mining industry.

The modular design of Proto Rig allows operators to upgrade individual hashboards without replacing entire units, transforming a traditionally 3-5 year disposable asset into a 10-year infrastructure investment [2]. This approach reduces costs by 15-20% each upgrade cycle and allows for easy, in-place, tool-free repair, turning a process that can take hours, days, or weeks into one that takes seconds. The miner's power density and maximum miner uptime deliver 1.5 times the power per foot of rack space compared to traditional mining hardware.

Block's Perry Hothi, a blockchain solutions architect and lead contributor to the Proto project, emphasized that the company's approach is not just about efficiency and price but also about profitability. The 14.1 joules per terahash (J/TH) efficiency is a real number, not a cherry-picked low sample, but not everyone will need to run at that level. The goal is to optimize for internal rate of return (IRR) or payback period, rather than just efficiency [1].

The miner is designed to be compatible with modern and legacy infrastructure, allowing mining operators to maximize efficiency in their existing facilities without requiring extensive retrofitting. Proto Rig also incorporates a unique three-phase power design, which helps facilities use all their power more efficiently and maintain balance even if one bay goes down [1].

To complement the hardware, Block has introduced Proto Fleet, an open-source fleet management software that brings together power-scaling, monitoring, diagnostics, and maintenance tools in a single, intuitive platform. Proto Fleet will be available for anyone to use at no cost, giving mining operators of all sizes access to powerful fleet management software [2].

Block's entry into the mining hardware space is part of its broader Bitcoin strategy, which includes Cash App, point-of-sale support of Bitcoin payments, and hardware wallet Bitkey. By addressing every part of the Bitcoin ecosystem, including mining, Block aims to decentralize mining by increasing access to tools for builders, regardless of their size or location [2].

References:
[1] https://blockspace.media/insight/jack-dorseys-block-is-disrupting-asic-miner-design/
[2] https://www.crowdfundinsider.com/2025/08/247657-bitcoin-mining-block-introduces-proto-rig-and-proto-fleet/