Major Mining Pools Unite to Accelerate Stratum V2 Adoption

Introduction

The Bitcoin mining ecosystem is taking a significant step forward as seven prominent industry players join the Stratum V2 Working Group. ANTPOOL, Block Inc, F2Pool, Foundry, Spiderpool, MARA Foundation, and DMND have officially become members, signaling a collective push to modernize the core protocol that connects miners to mining pools. This move marks a pivotal moment in the ongoing evolution of Bitcoin mining infrastructure.

Major Mining Pools Unite to Accelerate Stratum V2 Adoption — Source: bitcoinmagazine.com

What Is Stratum V2?

The Stratum V2 protocol is the next-generation upgrade to the original Stratum mining protocol that has been the backbone of pool mining for years. Designed as an open, vendor-neutral specification, it introduces a suite of improvements aimed at making mining more efficient, secure, and decentralized. The working group, founded in 2022 by Braiins and Spiral, oversees the development and maintenance of this protocol to ensure it remains a free and interoperable standard for the entire industry.

Key Improvements

Efficiency gains: Stratum V2 reduces bandwidth usage and improves communication between miners and pools, especially for large fleets. This allows for more streamlined management of thousands of mining rigs.
End-to-end encryption: Unlike the original protocol, Stratum V2 encrypts all traffic between miners and pools, protecting against eavesdropping and man-in-the-middle attacks.
Enhanced decentralization: One of the most transformative features is the ability for individual miners to construct their own block templates. This reduces pool centralization risks and allows smaller miners to have a more direct say in transaction selection.
Improved security: The protocol includes mechanisms to authenticate pool messages and prevent tampering, making the entire mining process more robust against attacks.

New Members Join the Working Group

The seven new members represent a broad cross-section of the mining ecosystem, from large pool operators to financial technology companies and industry foundations. Their combined experience and reach will be instrumental in driving real-world adoption of Stratum V2 across diverse mining operations worldwide.

ANTPOOL

ANTPOOL, one of the largest mining pools by hash rate, sees this as an opportunity to align around an open standard. Andy Zhou, CEO of ANTPOOL, commented: "We're proud to support the broader adoption of Stratum V2. Aligning around an open, interoperable standard enables the industry to collaborate more effectively and drive improvements in efficiency, security and decentralization."

Spiderpool

Spiderpool’s chief technology officer, Kenway Wang, highlighted decentralization as a core motivation: "Decentralization is core to our mission. Stratum V2 supports this by enabling miner-constructed templates, while also improving efficiency, especially for miners in bandwidth-constrained environments."

Other Members

Block Inc (formerly Square), F2Pool, Foundry, MARA Foundation, and DMND also bring unique perspectives. Block Inc has been a longtime advocate for open protocols, while Foundry and MARA are major institutional players. This diversity ensures that the working group can address the needs of both large-scale and grassroots miners.

Significance for Bitcoin Mining

The onboarding of these substantial players represents a qualitative leap forward for the working group’s efforts. Testing and implementing Stratum V2 at scale requires collaboration across the entire supply chain—from hardware manufacturers to pool operators. With ANTPOOL, F2Pool, Foundry, and others on board, the protocol can now be validated in real-world, high-volume environments.

This growing consensus indicates that the mining ecosystem is ready to move beyond the original Stratum protocol, which has served well but lacks modern security and efficiency features. Stratum V2’s support for independent block template construction is particularly groundbreaking, as it could shift power back to individual miners—a key goal for those concerned about mining centralization.

About the Stratum V2 Working Group

The Stratum V2 Working Group is an open collaboration initiative dedicated to advancing the development, adoption, and interoperability of the Stratum V2 mining protocol. It maintains a public specification and provides a coordination layer between developers and industry stakeholders. The group is vendor-neutral, meaning no single company controls the protocol’s direction. This ensures that Stratum V2 remains a true public good for the Bitcoin network.

With the addition of ANTPOOL, Block Inc, F2Pool, Foundry, Spiderpool, MARA Foundation, and DMND, the working group now has both the technical expertise and industry influence to shepherd Stratum V2 from specification to widespread deployment. As more miners and pools adopt the new protocol, the entire Bitcoin network stands to benefit from increased efficiency, security, and decentralization.

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