Top Bitcoin Mining Pools Back Stratum V2 Upgrade Effort

Seven heavyweight Bitcoin mining pools, including Foundry and AntPool, have joined forces under the Stratum V2 working group to push forward the development of a vendor-neutral communication standard for mining pools. The collaboration aims to establish an open protocol that enhances efficiency and decentralization across the mining sector.

The participating pools—AntPool, Foundry, F2Pool, Block Inc, MARA Foundation, SpiderPool, and DMND—represent some of the most significant players in the industry. Foundry and AntPool alone account for nearly half of the global hashrate, with Foundry controlling approximately 30% and AntPool 17.7%, according to Hashrate Index.

The Stratum V2 protocol is designed to improve communication between mining pools and individual miners. Its open standard aims to reduce latency, which is critical in an industry where milliseconds can determine profitability. By decentralizing control over block templates, the initiative also seeks to mitigate centralization risks that have increasingly plagued the Bitcoin mining sector.

“Bitcoin mining is competitive and fragmented by design. It is a race for efficiency where a millisecond can determine whether a miner wins a block or loses to a competitor,” the Stratum V2 announcement noted.

Challenges Mount for Miners

While the Stratum V2 initiative is a step forward, Bitcoin miners are also grappling with mounting challenges. The next mining difficulty adjustment, scheduled for May 15, 2026, is expected to increase the network difficulty from 132.47 trillion to 135.64 trillion, according to CoinWarz. This marks yet another hurdle for miners as adding new blocks to the Bitcoin ledger becomes increasingly computationally expensive.

Adding to the strain, rising energy costs are cutting into profitability. Asset manager CoinShares estimates that up to 20% of Bitcoin miners are currently operating at a loss. Hashprice—a key metric measuring miner revenue per petahash per second—has dropped to $36-$38/day, nearing breakeven levels for many operators.

Despite these pressures, the introduction of a standardized protocol like Stratum V2 could provide miners with a much-needed edge in an environment where efficiency is paramount. By facilitating faster and more efficient communication, the protocol could enable pools to optimize operations and potentially offset some of the economic challenges.

The Stratum V2 group’s progress will be closely watched, as its success could redefine the competitive dynamics of Bitcoin mining while addressing longstanding issues of centralization in the industry.

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