Stratum V2: 75% hashrate pools shift control to miners
Seven major Bitcoin mining pools—Foundry, AntPool, F2Pool, SpiderPool, MARA Pool, Block Inc, and DMND—have joined the open-source Stratum V2 protocol. Together, they control about 75% of global BTC hashrate, marking a key milestone for Stratum V2 rollout.
The main change is governance and transaction selection. With Stratum V2, miners can generate their own block templates, reducing pool operators’ influence over which transactions get included (a long-standing Stratum V1 centralization concern). Hashrate concentration is high: Foundry (34.2%), AntPool (14.2%), F2Pool (11.3%), SpiderPool (10.5%), and MARA Pool (4.7%), totaling roughly 75%.
Traders should also note near-term mining stress. CoinShares estimates about 20% of active miners are operating at a loss. Hashprice is cited around $38.57, while difficulty is expected to rise from 132.47T to 135.64T (May 15) with total hashrate around 998 EH/s.
Overall, Stratum V2’s large-pool adoption could improve transparency and miner influence, but current profitability pressure may weigh on short-term sentiment for BTC.
Neutral
Bullish arguments are structural: Stratum V2 adoption by pools controlling ~75% of BTC hashrate shifts transaction-selection authority toward miners, improving decentralization and potentially strengthening confidence in Bitcoin’s permissionless design over the long run.
However, the latest update highlights a short-term headwind for the mining sector: roughly 20% of active miners are estimated to be unprofitable, with hashprice near break-even and difficulty expected to rise. That profitability stress can dominate near-term sentiment even if the protocol change is positive.
Netting both effects, traders may see limited immediate price impulse for BTC, with the bigger impact likely felt through longer-term confidence rather than an immediate directional move.