Choosing a mining pool is one of the most consequential decisions a Bitcoin miner makes — and one of the most overlooked. Your pool determines how your hashrate is used, how you get compensated, and whether you are contributing to Bitcoin decentralization or undermining it.
This guide covers every pool type, the real selection criteria that matter, and why decentralization should be at the top of your priority list in 2026.
Why Mining Pools Exist
Bitcoin mining is probabilistic. A solo miner with 100 TH/s has an extremely low probability of finding a block on any given day. Mining pools aggregate hashrate from thousands of miners, find blocks more frequently, and distribute rewards proportionally. You trade variance for consistency.
But this convenience comes with trade-offs. Every terahash pointed at a pool is a terahash that pool operator controls. Pool operators decide which transactions to include in blocks, can censor transactions, and in extreme scenarios could attempt network attacks. This is not theoretical — pool centralization is one of the most pressing threats to Bitcoin in 2026.
Pool Reward Structures Explained
FPPS (Full Pay Per Share)
The pool pays you a fixed amount for every valid share you submit, calculated from the current block reward AND transaction fees. The pool absorbs all variance risk — you get paid regardless of whether the pool finds blocks.
- Pros: Most predictable income. Includes transaction fee revenue. Zero variance.
- Cons: Higher pool fees (typically 2-4%) to compensate for the risk the pool assumes.
- Best for: Miners who need predictable cash flow, larger operations with tight margins.
PPS+ (Pay Per Share Plus)
Similar to FPPS, but the base block reward is paid per share while transaction fees are distributed using PPLNS methodology. A hybrid approach.
- Pros: Predictable base income with potential upside from transaction fees during high-fee periods.
- Cons: Transaction fee component varies. Still carries pool counterparty risk.
- Best for: Miners wanting mostly predictable income with some upside exposure.
PPLNS (Pay Per Last N Shares)
Rewards are only distributed when the pool finds a block, proportional to the shares you contributed in the window leading up to that block.
- Pros: Lower pool fees (typically 1-2%). Discourages pool hopping. Rewards loyal miners.
- Cons: Higher variance in short-term payouts. Unlucky streaks mean delayed payments.
- Best for: Miners with longer time horizons who can tolerate variance.
Solo Mining (Through a Pool Proxy)
You point your miner at a solo pool like Solo CKPool. If YOUR hashrate finds a block, you get the entire block reward (minus a small pool fee, typically 2%). If you do not find a block, you get nothing.
- Pros: Maximum reward per block found. Full sovereignty. True lottery mining experience.
- Cons: Extremely high variance. May never find a block with small hashrate.
- Best for: Bitaxe and open-source miner operators. Bitcoin maximalists prioritizing sovereignty.
Learn more about solo mining odds with our Solo Mining Calculator.
Pool Selection Criteria
| Criteria | Why It Matters | What to Look For |
|---|---|---|
| Hashrate Share | Pools with >25% of network hashrate are centralization risks | Choose pools with <20% network share. |
| Pool Fees | Directly reduces your mining output | FPPS: 2-4%. PPLNS: 1-2%. Solo: 1-2%. |
| Payout Threshold | Minimum balance before you receive payment | Lower is better. Lightning payouts eliminate thresholds. |
| Stratum Protocol | Communication between your miner and the pool | Stratum V2 support is ideal for decentralization. |
| Transaction Selection | Who chooses which transactions go in blocks | Stratum V2 lets miners construct their own block templates. |
| KYC Requirements | Whether the pool requires identity verification | For sovereignty-minded miners, KYC-free pools preserve privacy. |
The Decentralization Imperative
Pool centralization is an existential risk to Bitcoin. When two or three pools control >50% of hashrate, those pool operators have the theoretical ability to:
- Censor transactions: Refuse to include specific transactions in blocks
- Perform 51% attacks: Double-spend or reorganize the blockchain
- Comply with regulatory pressure: Governments can compel centralized pool operators to filter transactions
As a miner, you have direct agency over this. Every time you choose a smaller, independent pool over a dominant one, you strengthen Bitcoin. This is not altruism — it is rational self-interest.
Stratum V2: The Technical Solution
Stratum V2 is a next-generation mining protocol that fundamentally shifts power from pool operators back to individual miners. Key improvements:
- Miner-side block construction: Individual miners can build their own block templates, making transaction censorship by pools nearly impossible.
- Encrypted connections: Prevents ISP-level snooping on mining traffic.
- Reduced bandwidth: More efficient protocol means fewer stale shares.
Major Mining Pools Compared (2026)
| Pool | Reward Type | Fee | Approx Network Share | Stratum V2 | KYC |
|---|---|---|---|---|---|
| Foundry USA | FPPS | 2.5% | ~30% | No | Yes (for US) |
| AntPool | FPPS/PPLNS | 2.5%/1% | ~18% | No | Optional |
| F2Pool | PPS+ | 2.5% | ~12% | No | No |
| ViaBTC | PPS+/PPLNS | 2%/1% | ~10% | No | No |
| Braiins Pool | FPPS | 2% | ~5% | Yes | No |
| OCEAN | TIDES | 0%* | ~2% | Yes | No |
| CKPool | PPLNS/Solo | 1-2% | ~1% | No | No |
| Solo CKPool | Solo | 2% | <1% | No | No |
*OCEAN uses a unique TIDES payout system. Network shares are approximate and fluctuate.
From a decentralization perspective, pointing hashrate at Braiins Pool, OCEAN, or smaller pools is far more beneficial than adding to Foundry or AntPool, which already control disproportionate network share.
Pool Recommendations by Miner Type
Bitaxe / Open-Source Solo Miners
Recommended: Solo CKPool — The natural choice for Bitaxe and NerdAxe miners. No KYC, no minimum payout, just pure solo mining.
Home Miners with 1-5 ASIC Units
Recommended: Braiins Pool or OCEAN — Both support Stratum V2, have no KYC requirements, and are actively working to decentralize mining.
Larger Home Operations (5+ ASICs)
Recommended: Split across multiple smaller pools — Diversifying across pools reduces your counterparty risk and further decentralizes the network.
Frequently Asked Questions
Can I switch pools at any time?
Yes. Changing pools is as simple as updating the pool URL and worker name in your miner configuration. There is no lock-in. You can switch in under a minute.
Should I choose the pool with the lowest fees?
Not necessarily. A pool with higher fees but better uptime, Stratum V2 support, and smaller network share may provide better long-term value for both you and Bitcoin.
What happens if my pool goes offline?
Your miner will attempt to reconnect. Most mining firmware supports configuring a backup pool URL that activates automatically if the primary pool is unreachable. Always configure at least one backup.
Is solo mining through Solo CKPool truly solo?
Yes. Solo CKPool acts as a proxy that connects your miner to the Bitcoin network. It does not combine your hashrate with anyone else. If your hardware finds a valid block, you receive the full block reward minus the 2% pool fee.
