What To Know:
- Tether has open-sourced MiningOS, a bitcoin mining operating system built to replace closed, vendor-controlled software.
- The system supports setups ranging from home miners to large industrial sites and runs on a modular, peer-to-peer architecture.
- The launch aligns with Tether’s broader expansion beyond stablecoins, backed by strong profits and growing capital reserves.
Tether has launched an open-source operating system designed for bitcoin mining, to challenge proprietary, vendor-controlled software that has long dominated the sector.
The world’s largest stablecoin issuer said on Monday that it has open-sourced MiningOS, or MOS, a system built to manage and automate mining operations across a wide range of setups. According to Tether, the software can be used by individual miners running a handful of machines and by large industrial facilities operating across multiple locations.
Tether Launches Open-Source Bitcoin Mining OS
The launching of Open-Source Bitcoin Mining OS is an attempt to remove the barriers to entry in a field that has increasingly clustered around companies providing closed, expensive management platforms, specifically Bitcoin mining. The idea Tether first discussed was about an open mining operating system last year, saying reliance on proprietary software had limited competition and diminished transparency across the market.
Other companies, such as Jack Dorsey-backed Block, have also called for more open mining infrastructure. MOS is implemented as a modular, peer-to-peer architecture, with which operators are allowed to coordinate the actions of the mining team without the need for centralized third-party services. Tether said the system provides a unified operational layer that brings together hardware coordination, energy usage, device health monitoring, and site-level infrastructure management. The goal is to give miners a clearer view of their operations without stitching together multiple software tools.
Paolo Ardoino, Tether’s chief executive, said the operating system was designed to scale without locking users into a single vendor. In a statement, he said MOS can support everything from single-machine deployments to industrial mining sites spread across different regions. This can be achieved even while remaining flexible enough to integrate new hardware and energy configurations.
Tether said MOS has been released under an Apache 2.0 open-source license and is hardware-agnostic, allowing it to run across different mining rigs and setups. Alongside the operating system, the company announced a Mining Software Development Kit, which serves as the underlying framework for MOS. Tether said the SDK will be developed further in collaboration with the open-source community over the coming months.
The mining software release arrives as Tether continues to expand beyond its core stablecoin business. Earlier this year, the company launched a new US-regulated stablecoin called USAT, following the introduction of a federal stablecoin framework under the GENIUS Act. The token is fully backed by the US dollar and issued by Anchorage Digital Bank, the first federally regulated crypto bank in the United States.
USAT has been set for institutional and payment-focused use within the US market. Initial integrations include Bybit, Crypto.com, Kraken, OKX, and MoonPay, with additional payment and settlement partners expected to be added. Tether said its flagship stablecoin, USDT, will continue to operate outside the United States without changes to its global structure.
The expansion comes amid one of the most profitable periods in the company’s history. Tether had generated around $15 billion in profit in 2025, driven largely by income from its US Treasury holdings and sustained demand for dollar-denominated liquidity in global markets.
Those profits have helped build a balance sheet that now rivals mid-sized financial institutions. Tether has quietly become one of the world’s largest holders of US government debt, ranking as the seventeenth largest holder of US Treasuries globally. The position places it ahead of several sovereign nations, including Germany, South Korea, and Australia.
Along with government bonds, Tether holds significant allocations to bitcoin and physical gold. The company has also emerged as one of the most aggressive buyers in the global bullion market. According to Ardoino, Tether has been acquiring as much as two tons of gold each week, a pace that translates to more than $1 billion in monthly purchases at current prices. He said the buying strategy is expected to continue for at least the next several months.
