The Bitcoin mining ecosystem is undergoing a major transformation as seven prominent organizations join the Stratum v2 Working Group, signaling a collective push toward a more open, efficient, and decentralized mining protocol. Originally founded in 2022 by Braiins and Spiral, the working group aims to develop and maintain Stratum v2 as a vendor-neutral specification. The new members—ANTPOOL, Block Inc, F2Pool, Foundry, Spiderpool, MARA Foundation, and DMND—represent a diverse cross-section of the mining world, from large pools to institutional services. Their involvement accelerates the adoption of Stratum v2, which brings encryption, miner-constructed block templates, and better bandwidth management. Here are seven critical things you need to know about this development.
1. ANTPOOL: A Mining Pool Giant Backs Open Standards
ANTPOOL, one of the world's largest mining pools, has joined the Stratum v2 Working Group, underscoring the industry's appetite for a standardized, open protocol. CEO Andy Zhou stated, 'Aligning around an open, interoperable standard enables the industry to collaborate more effectively and drive improvements in efficiency, security and decentralization.' ANTPOOL’s participation brings massive hashrate to the group, ensuring that real-world scalability tests can occur at a large scale. The pool’s engineers will contribute to compatibility testing and specification refinement, helping Stratum v2 function seamlessly across diverse mining hardware and software setups.
2. Block Inc: Bringing Financial Tech Expertise to Mining
Block Inc (formerly Square) expands its Bitcoin involvement beyond payments and custody by joining the working group. As a co-founder of the Stratum v2 initiative via its Spiral subsidiary, Block Inc already had a stake in the protocol’s success. Now, as a formal member, it brings deep experience in open-source development and user-centric design. Block Inc aims to ensure that Stratum v2 remains accessible to both large institutional miners and small-scale hobbyists, promoting broader decentralization. Their engineers will focus on security audits and protocol enhancements, particularly around end-to-end encryption features.
3. F2Pool: Strengthening Consensus Across Major Pools
F2Pool, another heavyweight mining pool, adds critical mass to the working group. With operations spanning multiple continents, F2Pool’s inclusion demonstrates that Stratum v2 is not a niche experiment but the direction the entire ecosystem is heading. The pool will test features like efficient job distribution and reduced bandwidth overhead—key benefits for operators in regions with unreliable internet. F2Pool’s participation also helps bridge the gap between legacy mining infrastructure and next-generation protocol upgrades, ensuring backward compatibility where possible.
4. Foundry: Institutional Mining Backing for Stratum v2
Foundry, a leading institutional mining services provider, brings a unique perspective to the working group. Focused on large-scale mining operations, Foundry will advocate for features that improve fleet management and energy efficiency. Their engineers have already begun integrating Stratum v2 into their proprietary software stack, aiming to reduce latency and increase hashrate stability. Foundry’s involvement signals to other institutional players that Stratum v2 is production-ready and beneficial for bottom-line performance, not just ideological decentralization.
5. Spiderpool: Championing Miner Autonomy in Template Construction
Spiderpool CTO Kenway Wang highlighted the core value of Stratum v2: '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.' Spiderpool, known for its innovation in mining software, will focus on template negotiation mechanisms that let individual miners choose which transactions to include in blocks. This feature alone could reduce the power of large pools to censor transactions, a major step toward true mining decentralization.
6. MARA Foundation: Supporting Open Protocol Development
MARA Foundation, the philanthropic arm of Marathon Digital Holdings, joins to support the public good aspects of Stratum v2. Marathon is one of the largest publicly traded Bitcoin miners, and its foundation’s involvement emphasizes the non-profit, community-driven nature of the protocol. The foundation will fund educational resources and developer tools, making it easier for smaller mining operations to adopt Stratum v2. Their contribution helps ensure that the protocol remains open and free from vendor lock-in, aligning with Bitcoin’s ethos.
7. DMND: A New Player Committed to Interoperability
DMND, a lesser-known but ambitious mining entity, rounds out the new members. While details about DMND’s operations are still emerging, their commitment to the working group highlights the broad appeal of Stratum v2 across different mining business models. DMND plans to implement the protocol in its own pool software and mining hardware, contributing to interoperability testing. Their participation is a testament to the growing ecosystem consensus that an open, standardized mining protocol benefits everyone—from solo miners to industrial-scale farms.
The Stratum v2 Working Group now boasts seven new influential members, each bringing unique expertise and resources. With these additions, the protocol’s specification will undergo rigorous real-world validation, paving the way for wider adoption. The group continues to maintain a public specification and serve as a coordination layer between developers and industry stakeholders. As Andy Zhou of ANTPOOL noted, the industry is aligning around an open standard to improve efficiency, security, and decentralization. The future of Bitcoin mining has never looked more collaborative—or more promising.