Seven of the most important names in bitcoin mining formally joined the Stratum V2 Working Group this week, signaling the business’s clearest shift but towards miner-controlled transaction choice.
Key takeaways:
- Antpool, F2pool, Foundry, and 4 others joined the Stratum V2 working group on Could 7, 2026.
- Stratum V2 provides miners as much as 7.4% larger profitability by means of decrease latency and higher price seize.
- Braiins and Spiral based the Activity Pressure in 2022 and are actually coming into a brand new implementation section in 2026.
7 Bitcoin Mining Swimming pools Again Stratum V2 as Miners Push for Management of Block Templates
Antpool, F2pool, Foundry, Spiderpool, Block Inc., MARA Basis and DMND are actually a part of the trouble to advance the open mining protocol customary. The announcement was revealed by Pavlenex on the official website of the Stratum V2 Working Group.
Stratum V2 replaces Stratum V1, a push-based protocol launched in 2012 by Marek “Slush” Palatinus that grew to become the business default however was by no means designed as a proper customary. V1 left swimming pools with full management of transaction choice, ran in plaintext, and uncovered miners to hashrate hijacking and surveillance.
The latest protocol addresses these points. It makes use of end-to-end authenticated encryption, reduces bandwidth utilization by about 60% on the pool facet and 70% for miners, and introduces an announcement of labor subprotocol that permits miners to create their very own block templates as an alternative of accepting what swimming pools allocate.
In keeping with the official announcement, “By conserving Stratum V2 as a public, vendor-neutral specification, we take away compatibility limitations and permit the ecosystem to concentrate on what issues most: bettering miner effectivity, privateness, safety, and autonomy, in the end resulting in larger profitability.”
Braiins real-world testing exhibits that miners can obtain as much as 7.4% extra profitability by means of quicker template supply, decrease latency, and higher fee choice when operating V2 natively.
Antpool CEO Andy Zhou mentioned the corporate is “proud to assist the broader adoption of Stratum V2,” including that aligning round an open, interoperable customary permits the business to collaborate on effectivity, safety and decentralization. Kenway Wang, CTO of Spiderpool, famous that the protocol helps miner-built templates, that are particularly helpful for operators in bandwidth-limited environments.
Braiins Pool and DMND are already operating Stratum V2 in manufacturing. DMND launched in 2025 as one of many first swimming pools to supply full rosters curated by miners. Blitzpool runs it for solo miners and the Stratum V2 reference implementation group group continues testing.
The Working Group was based in 2022 by Braiins and Spiral, Block’s Bitcoin know-how arm. The group has operated for greater than 4 years as an impartial open supply group and is now coming into “a brand new section of accelerated growth and deployment” with the addition of large-scale operators.
Foundry, Luxor, and Antpool had made prior testing commitments or ready infrastructure previous to this announcement. The seven new additions signify tens of exahashes per second of mixed hashrate, a determine that issues as a result of roughly 5 teams at present management round 70% of the worldwide hashpower and due to this fact nearly all of block content material.
For particular person bitcoin miners, the sensible change is dependent upon when these swimming pools enable V2 entry for customers. Translation proxies already enable Stratum V1 firmware to connect with V2 clusters with out requiring {hardware} or firmware updates, decreasing the barrier to adoption.
