Major Bitcoin Mining Pools

This editorial list covers the Bitcoin pools most often cited in public block statistics across 2025 and 2026. It is not an affiliate ranking, and hashrate shares move week to week with fleet migrations, incidents, and power prices. For a point-in-time picture, open a public hashrate-by-pool chart and write down the date of the pull.

What "major pool" means

A pool counts as major here when blocks are attributed to it regularly in public tallies, when ASIC operators recognize its name, and when its Stratum documentation is accessible.

That size proves a large number of machines are coordinated there. It proves neither honesty nor quality of service for you: a very large pool can be badly placed for your latency, while a smaller one fits your region better. Legal entities and server footprints also change, which is why the official site is worth checking at account opening.

Foundry USA

Pool associated with the Foundry and Digital Currency Group ecosystem, prominent in North American block tallies in recent years. Onboarding leans professional, with an account, workers, and payouts under published terms. Its observed share varies and is not a constant.

AntPool

Historic pool in the Bitmain orbit, long one of the most visible names on hashrate charts. It offers many endpoints and remains familiar to Antminer-heavy fleets.

One useful clarification: AntPool is not a required destination for Bitmain machines. An Antminer connects to any Stratum server you configure, and nothing in the stock firmware favours this pool.

ViaBTC

A well-known multi-asset pool, Bitcoin included, with an international user base. It generally offers several payout schemes, whose exact menu evolves. Its interface and tooling, watchers and API, matter as much in daily use as the FPPS or PPLNS label. Use its regional endpoints rather than a hostname copied from elsewhere.

F2Pool

Another historic name, originally "Discus Fish", still cited in Bitcoin block aggregations. The service is broad and its URL and payout-mode documentation is public. F2Pool has changed fees and products before, which makes any source other than its current official page unreliable.

MARA Pool

Pool tied to Marathon Digital, a publicly listed mining operator. It appears in block attributions when its internal hashrate and any external customers aggregate there. Its main interest is illustrating the listed-company-plus-pool model. Access rules and its internal or open status can change, and only MARA's or the pool's own communication binds.

SpiderPool

A name that became common in block statistics from 2024 to 2026. Newer than the historic pools above, it is active enough to appear in public breakdowns. It is judged like the others: Stratum documentation, payout scheme, published fees, payout delay, and a latency test from your own hall.

Other names you will keep meeting

Binance Pool, backed by the exchange. The exchange account rules, withdrawals, KYC, and thresholds, read separately from the pool's own.
Luxor, pool and tooling leaning professional, often cited in the US.
Braiins Pool, formerly Slush, the oldest Bitcoin pool lineage still operating and a historic reference for the Stratum protocol. The Braiins OS firmware is a separate product.
SECPOOL and Ocean, along with other template-policy pools, present in the 2024 to 2026 debates on block construction. Their template policy makes them a different product from a generic FPPS pool, and they should be read as such.
SBI Crypto, Poolin, and several others, whose visibility varies by year. A household name in 2021 may be secondary by 2026.

A pool's absence from this list says nothing about its legitimacy, only that it was not among the most cited public names at the time of writing.

How to judge a pool from your own hall

Four measurements to run yourself, in this order, before looking at any market share:

Real latency to each endpoint offered, measured from the network your machines sit on rather than from your office. That figure determines your stale share rate.
The stale and rejected share rate after a few days of running, compared between two pools on identical machines if you can dedicate one to the test.
Credit consistency, reconciling your accepted shares against the published rate for your scheme, over a full month.
Failover behaviour, tested deliberately by cutting access to the primary pool, to measure how long the machine takes to switch.

Three precautions go with that evaluation. Do not copy market share percentages from an undated article. Do not infer a pool's jurisdiction from its brand, since legal entity, terms of service, and Stratum server location are three separate questions. And do not treat a pool as long-term custody: sweep your satoshis to an address you control, on your own treasury policy.

Keeping your short-list current

Once a quarter, open a public hashrate-by-pool graph noting both the leaders and the date, re-read the fee and payout pages of the two or three pools you use, and test a backup endpoint. The order moves, but your criterion stays realized net and stability, not a place in a pie chart.