Tether Plans Major Merger to Transform Twenty-One Capital into Leading Bitcoin Firm

Tether Unveils Plan for Twenty One Capital to Become Leading Bitcoin Company

Tether Investments, the investment arm of the stablecoin issuer Tether, has announced a plan to transform Twenty-One Capital (XXI) into the "leading publicly listed Bitcoin company in the world." The company revealed its intention to vote for a merger between Twenty-One Capital and the Bitcoin financial service provider Strike, as well as the miner Elektron Energy. This merger aims to create a unified platform that integrates treasury, mining, financial services, lending, and capital markets.

Following the proposed merger, Twenty-One Capital will first merge with Strike, which operates in over 100 countries. The combined entity will then merge with Elektron Energy, a large-scale Bitcoin mining platform. Tether Investments noted that once the transactions are completed, the merged company could leverage a strong balance sheet and a profitable business model to promote Bitcoin adoption.

"If the transactions are completed, the combined company could utilize a strong balance sheet, a profitable business at scale, and a financial services division to promote Bitcoin adoption," stated Tether Investments.

Currently, Twenty-One Capital is one of the second-largest public holders of Bitcoin, with over 43,500 BTC on its balance sheet. The stock of XXI was listed on the New York Stock Exchange (NYSE) in December 2025 and has seen a decline of more than 10% in 2026. However, it reacted positively to the announcement, rising over 6.6% in after-hours trading to $8.35.

Key Takeaways:

• Tether plans to merge Twenty-One Capital with Strike and Elektron Energy.
• Twenty-One Capital holds over 43,500 BTC, making it a significant player in the Bitcoin market.
• The stock price of XXI increased by 6.6% following the announcement.

Tether and Canaan Launch Modular Mining Infrastructure

Tether is fundamentally restructuring its Bitcoin mining operations by introducing a modular mining infrastructure in collaboration with hardware manufacturer Canaan and ACME Swisstech. This new system separates the three core components of the mining process: computing power, power supply, and housing, allowing for independent upgrades and cost savings.

According to Tether CEO Paolo Ardoino, this modular approach provides direct control over operational costs and efficiency at an industrial scale. The hardware will utilize high-density hash board modules from Canaan and is primarily designed for immersion cooling, with alternative cooling systems to follow. The first practical test is planned at Tether's facility in South America.

Key Takeaways:

• Tether's new modular mining infrastructure allows for independent upgrades of mining components.
• The first practical test of this system will occur in South America.
• This approach aims to enhance operational efficiency and reduce costs.

Soluna Holdings and Sazmining Announce Partnership for Bitcoin Mining

Soluna Holdings, Inc. has partnered with Sazmining to support a 3 MW Bitcoin mining operation at Project Dorothy 1B. This collaboration marks Sazmining's second U.S. location and offers potential for future scaling based on customer demand and facility availability.

Project Dorothy, located in West Texas, is powered by the 150 MW Briscoe wind farm, which Soluna recently acquired as part of its strategy to vertically integrate energy generation and IT infrastructure. The company anticipates that the third phase of this project could provide up to 300 MW of computing capacity for AI workloads.

Key Takeaways:

• Soluna and Sazmining's partnership will establish a 3 MW Bitcoin mining operation.
• The project is powered by a wind farm, enhancing sustainability.
• Future phases may expand capacity significantly for AI workloads.

Tether Introduces Mining Development Kit

Tether has launched its "Mining Development Kit" (MDK), aiming to redefine the software layer of Bitcoin mining. This initiative seeks to establish a unified standard for the entire mining infrastructure, moving away from the fragmented solutions currently in use.

The MDK includes an open-source backend SDK and a UI Development Kit, allowing for real-time control of mining hardware and the development of custom mining dashboards. Tether's goal is to provide miners with greater control, flexibility, and independence, potentially transforming the mining industry.

"The next generation of mining will focus on automation and optimization, and MDK will serve as the backbone driving this shift towards autonomous agents and workflows," said Paolo Ardoino, CEO of Tether.

Key Takeaways:

• The MDK aims to standardize the mining infrastructure and improve efficiency.
• Tether's initiative could lead to significant advancements in mining technology.
• MDK is designed to be universally compatible with various mining hardware.

Big Tech's Multi-Billion Dollar AI Investments Continue

Four of the Magnificent Seven tech giants—Microsoft, Alphabet, Meta, and Amazon—are on track to meet their massive AI spending goals this year, with a combined market capitalization of approximately $12 trillion. A recent analysis predicts these companies will spend around $650 billion on AI infrastructure by 2026.

As Bitcoin miners face margin pressures from lower prices and increased competition, many are pivoting to host computers for AI as part of their revenue diversification strategy. This shift highlights the growing intersection between AI and cryptocurrency mining, as miners leverage their existing data centers for new opportunities.

Key Takeaways:

• Big Tech companies are expected to invest $650 billion in AI infrastructure by 2026.
• Bitcoin miners are diversifying by hosting AI computing resources.
• This trend reflects the evolving landscape of digital asset management.

Sources:

• Tether stellt Plan vor: Twenty One Capital soll führendes Bitcoin-Unternehmen werden
• Bitcoin: Tether und Canaan starten modulares Mining
• Soluna Holdings und Sazmining verkünden Partnerschaft für 3-MW-Bitcoin-Mining-Betrieb bei Project Dorothy 1B
• Tether stellt sein „Mining Development Kit“ vor
• Die Multi-Milliarden-Dollar-KI-Investitionen der Big Tech bleiben auf Kurs, während die Mag-7-Giganten ihre Quartalsergebnisse melden