Seven Major Bitcoin Mining Pools Back Stratum V2 as Mining Margins Tighten

Bitcoin mining is getting squeezed from every angle, and seven major pools are now lining up behind Stratum V2 as margins tighten. It’s a smart move for efficiency and miner control, but it won’t paper over the brutal economics hammering the sector.

• Seven major pools joined the Stratum V2 working group
• Open mining protocol aims to improve efficiency and miner autonomy
• Bitcoin mining profitability is under heavy pressure
• Stratum V2 helps, but it won’t fix power costs or weak hashprice

The new wave of support brings some serious weight to the Stratum V2 effort: AntPool, Block Inc., F2Pool, Foundry, MARA Foundation, SpiderPool, and DMND. That’s not a token gesture. When the biggest Bitcoin mining pools start showing up, standards stop being nerdy wishful thinking and start becoming infrastructure with actual teeth.

Stratum V2 is an open communication protocol for Bitcoin miners and mining pools. Put simply, it’s a better way for miners and pools to coordinate work, with the goal of improving speed, security, and efficiency. One of its most important features is that it can give miners more influence over block template selection — the process of deciding which transactions get included in a block.

That matters more than it sounds. Whoever controls block templates has meaningful influence over what gets processed on-chain. If miners have more say, the system becomes a bit less dependent on pool operators acting like the final boss of transaction selection. That’s a real decentralization win, even if it’s not the kind of thing that sends price tourists into a frenzy.

The timing is no accident. Bitcoin mining is in a rough spot. CoinShares estimated that about 15% to 20% of the global mining fleet may be unprofitable, with the hardest pressure hitting miners running older hardware or paying high electricity costs. In a business where power is the main operating expense and mining rigs age like milk, that’s not a small headache — that’s a knife fight.

Hashprice, which is the amount miners earn per unit of computing power, has reportedly fallen close to five-year lows. At the same time, the average cash cost to mine one BTC among listed miners has climbed to around $79,995. And because the universe apparently enjoys kicking miners while they’re down, Bitcoin mining difficulty is expected to rise again in May. Higher difficulty means miners need more computing power to earn the same reward. Brutal, but that’s the game.

The April 2024 halving already made things tougher by cutting block rewards in half. That event is one of Bitcoin’s most important monetary features, but it also reminds everyone that mining is not a perpetual money printer. It’s a fiercely competitive commodity business with thin margins, heavy capex, and no mercy for weak operators. If your fleet is old and your electricity bill is ugly, no amount of optimistic X posts is going to save your balance sheet.

That’s why the involvement of Foundry and AntPool matters so much. Foundry reportedly controls nearly 30% of global pool hashrate, while AntPool holds about 17.7%. When pools that big join a standards effort, adoption gets much more plausible. Bitcoin mining is competitive and fragmented by design, which is good for resilience but a pain in the ass for coordination. Standards only matter when the big players actually use them, not when they clap politely from the sidelines.

There’s plenty to like here. Stratum V2 can improve mining efficiency, reduce some communication overhead, and tighten security. More importantly, it can reduce the degree to which pool operators control block template selection. That’s a decent step toward stronger miner autonomy and, by extension, a healthier decentralization story for Bitcoin mining.

But let’s not turn this into fairy dust. Stratum V2 is not a cure for expensive electricity, obsolete hardware, rising difficulty, or Bitcoin’s price volatility. It may help shave inefficiencies at the margins, and in this business margins are everything. Still, a better protocol is not the same thing as a better power contract, a more efficient ASIC, or a friendlier market.

That distinction matters because mining has become a harsh financial sorting machine. Efficient operators survive, overleveraged or underpowered ones get squeezed out, and the network keeps marching on. There’s a built-in beauty to that, but also a cold reality: industrial Bitcoin mining is now a serious infrastructure game, not a hobbyist dream with fans in a garage.

For miners, the takeaway is obvious. Any protocol that boosts efficiency and gives more control back to the actual hashpower providers is worth backing. For investors, it’s a reminder that public mining companies live and die by energy costs, fleet quality, and execution. For Bitcoin itself, wider Stratum V2 adoption would be a quiet but meaningful upgrade to the plumbing that keeps the network running.

What is Stratum V2?

An open communication protocol for Bitcoin miners and mining pools, designed to improve efficiency, security, and coordination.

Why does Stratum V2 matter for Bitcoin mining?

It can reduce inefficiencies and give miners more control over block template selection, which supports both better operations and stronger decentralization.

Which mining pools joined the working group?

AntPool, Block Inc., F2Pool, Foundry, MARA Foundation, SpiderPool, and DMND.

Why is Foundry and AntPool’s support important?

They control a large share of global pool hashrate, so their participation gives the standard real industry weight instead of just nice PR.

Are many Bitcoin miners unprofitable right now?

Yes. CoinShares estimated that roughly 15% to 20% of the global mining fleet may be underwater, especially older rigs and miners with expensive power.

What is hashprice?

Hashprice is the revenue miners earn per unit of computing power. When it falls, mining gets less profitable even if the machines are still running.

Will Stratum V2 solve mining profitability problems?

No. It may improve efficiency and autonomy, but it cannot fix high electricity costs, hardware depreciation, rising difficulty, or market volatility.

Does Stratum V2 help decentralization?

Potentially yes, especially if it gives miners more control over block template selection and reduces pool operator dominance. Adoption is what will decide whether that promise becomes real.

Bitcoin mining remains a ruthless business by design. That’s part of why the network is resilient, and part of why miners are constantly hunting for any edge they can get. Stratum V2 is a meaningful step forward, not a magic trick. Better plumbing is worth having — just don’t confuse it with a bailout.