Solo Mining Odds: Formula, Hashrate Table, and Coin Fit
Solo mining odds depend on your share of the network hashrate and the length of the mining period. The probability can be tiny on Bitcoin yet more measurable on a smaller CPU- or GPU-oriented network. The Poisson formula turns those inputs into a comparable result.
What Solo Mining Odds Mean
Solo mining competes with the entire network. If a miner supplies one millionth of the hashrate, its expected long-run share is one millionth of the block opportunities. That expectation does not guarantee a block after one million attempts.
Network difficulty sets the proof-of-work target. Hashrate measures how quickly miners test possible block headers. The network hashrate is an estimate, so any result based on it is also an estimate.
Time supplies the final input. A chance quoted without a day, month, or year has little meaning. Average time to block can also mislead. A miner may find a block immediately or run far beyond the average without finding one.
How to Calculate Solo Mining Probability
The Poisson distribution models the number of events within a defined interval. For solo mining, the expected event count is the number of blocks your hashrate should find under constant conditions.
P(≥1 block) = 1 - e^(-λ), whereλ = (miner hashrate ÷ network hashrate) × (time window ÷ target block interval).
Consider a hypothetical Bitcoin scenario with a 200 TH/s ASIC, a 900 EH/s network estimate, and a ten-minute interval. These are model inputs, not a current network reading. One day contains 144 ten-minute intervals:
λ = (200 TH/s ÷ 900 EH/s) × 144 = 0.000032
The resulting chance of at least one block is about 0.0032% for that day. It does not start a countdown or make a later hash more likely.
The Bitcoin coin page provides live network inputs for a fresh calculation. Probability alone does not measure profitability. Power cost, downtime, fees, and hardware depreciation require separate estimates.
Odds by Time Horizon
A longer window raises the cumulative chance but does not improve an individual hash. This table uses the same hypothetical 900 EH/s network and ten-minute interval.
| Miner hashrate | One day | One week | 30 days | 365 days |
|---|---|---|---|---|
| 1 TH/s | 0.000016% | 0.000112% | 0.000480% | 0.00584% |
| 100 TH/s | 0.00160% | 0.0112% | 0.0480% | 0.582% |
| 1 PH/s | 0.0160% | 0.112% | 0.479% | 5.67% |
| 10 PH/s | 0.160% | 1.11% | 4.69% | 44.2% |
A 44.2% annual chance also means a 55.8% chance of finding no block. The average describes many hypothetical runs, not a deadline for one miner.
Changes in difficulty or estimated network hashrate alter every result. A useful calculation records its inputs and the time when they were collected.
Coin Comparison for Solo Mining
Hardware compatibility comes before probability. An ASIC network and a consumer-hardware network can place home miners in very different ranges.
| Coin | Algorithm | Suitable hardware | Home-solo outlook | Route to investigate |
|---|---|---|---|---|
| Bitcoin | SHA-256 | SHA-256 ASIC | Lottery-like for small rigs | Solo service or self-hosted setup |
| Litecoin | Scrypt | Scrypt ASIC | Depends on ASIC speed and live network data | Current solo service or node setup |
| Monero | RandomX | CPU | Consumer CPUs can participate directly | Official GUI or CLI wallet |
| Ravencoin | KAWPOW | GPU | Designed around consumer GPU capabilities | Current solo service or node setup |
“Suitable” does not mean profitable or likely to win. It means the hardware can perform the algorithm without an obvious architectural mismatch.
Monero’s documentation supports solo mining through its wallet software. It also describes P2Pool as pooled mining with a PPLNS payout scheme. P2Pool therefore differs from winner-takes-all solo mining.
Available endpoints and reward modes can change. The Mining-Dutch pool page can be used as one starting point when comparing current services.
ASIC vs GPU-Friendly Algorithms
Bitcoin and Litecoin mining favor hardware built for their algorithms. A gaming GPU cannot close that performance gap through different software alone.
Consumer hardware has a clearer role on two algorithms covered here:
- RandomX: Monero supports both CPUs and GPUs, but its mining documentation says CPUs work more efficiently.
- KAWPOW: Ravencoin says the algorithm uses consumer GPU memory and compute capabilities.
GPU compatibility still does not guarantee practical solo odds. The rig must own a measurable share of the selected network hashrate.
A home GPU fits Ravencoin better than Bitcoin. A modern CPU fits Monero better than either of those networks.
Hardware Requirements for Solo Mining
The word “solo” does not determine the hardware. The coin’s proof-of-work algorithm does.
- Bitcoin: use a SHA-256 ASIC with stable networking, adequate power delivery, and cooling.
- Litecoin: use a Scrypt ASIC and verify the selected service’s current reward rules.
- Monero: use a CPU suited to sustained RandomX workloads, with enough memory and cooling.
- Ravencoin: use a supported GPU and confirm compatibility with the selected miner version.
- Self-hosted mining: plan for a synchronized node, storage, bandwidth, monitoring, and protected RPC access.
There is no universal hashrate that makes solo mining likely. The useful threshold depends on network conditions and the time window.
Fixed hardware requirements can also become stale. Miner software, datasets, and network conditions may change between guides and deployment.
Solo Pool Fees and Payouts
A solo service supplies mining infrastructure without spreading each block across all participants. Low-difficulty shares can confirm that a worker is connected. They do not create proportional payouts on a true solo service.
Reward handling varies by service. The terms should explain the payout address, service fee, confirmation policy, and treatment of transaction fees.
Solo CKPool identifies itself as a service rather than a conventional reward-sharing pool. Its site publishes a 2% fee and says miners work toward their own Bitcoin address.
A fee affects the result only after a valid block is found. Electricity, cooling, downtime, and hardware wear continue during a zero-payout run.
What Small-Miner Wins Show
Solo services publish examples of blocks found through their infrastructure. Those wins prove that a low-probability outcome can occur. They do not prove favorable expected returns for a similar miner.
A very low probability is not zero. A visible winner also reveals nothing about all comparable miners who found no block.
A block explorer can confirm that a block entered the chain. It cannot establish the miner’s complete hardware or operating history. Reported hashrate needs separate evidence from preserved service statistics.
Documented wins are examples of variance, not performance benchmarks. The next miner’s probability still depends on hashrate, network conditions, block interval, and time.
Risks and Reasons to Mine Solo
Solo mining replaces frequent proportional payouts with a rare, concentrated outcome. That trade may suit a technical experiment or hobby. It also creates long periods with no revenue.
- Independence: a self-hosted miner can construct work without relying on a large reward-sharing pool.
- Technical learning: node, wallet, miner, and monitoring setup expose the full mining path.
- High variance: a valid block can produce a concentrated payout, while most periods may return nothing.
- Controlled experimentation: a miner can allocate only a defined part of its hashrate and power budget.
Previously purchased electricity is not free. Cooling, failed components, noise, and depreciation remain costs when the payout is zero.
Mistakes That Lower Your Odds
Avoidable losses usually come from incompatible hardware, downtime, or incorrect configuration. These faults reduce accepted work below the hashrate used in the calculation.
- Using the wrong algorithm: a GPU cannot mine SHA-256 competitively, while a SHA-256 ASIC cannot switch to RandomX.
- Ignoring rejected work: wrong ports, unstable links, latency, and invalid addresses can waste hashes.
- Running unstable settings: overheating and aggressive tuning can cause throttling or resets.
- Treating an average as a deadline: reaching the expected time does not improve the next attempt.
- Keeping stale inputs: changing network hashrate or difficulty changes the probability.
- Confusing shares with blocks: a share can confirm communication without meeting the network target.
Useful monitoring covers accepted hashrate, temperatures, power draw, rejected work, node synchronization, and current network inputs.
How to Choose Solo or Pool
Solo mining fits a budget that can tolerate no payout. A standard pool reduces payout variance, but it does not guarantee profit.
A hybrid allocation can keep most hashrate on a conventional pool while reserving a controlled portion for solo mining. The calculation should be repeated after changes in hashrate, difficulty, power cost, or equipment.
Use the solo mining chance calculator and solo mining setup guide before assigning hardware or a power budget.
Frequently Asked Questions
Yes. Practical Bitcoin mining uses SHA-256 ASIC hardware. Your probability depends on your share of the network hashrate and the selected time window. A home ASIC can find a block, but its calculated chance may remain small.
There is no fixed waiting period. Expected time is the reciprocal of the expected block rate. An individual result can arrive sooner or much later, so calculate a probability for a defined period instead.
Some do. Solo CKPool publishes a 2% fee, while other services set their own terms. Check how a service handles the reward, transaction fees, and confirmations before connecting hardware.
Start with a coin whose algorithm supports consumer GPUs. Ravencoin says KAWPOW uses consumer GPU memory and compute capabilities. The next step is comparing the GPU’s measured hashrate with the live network estimate.
Sources
- Poisson Distribution — NIST/SEMATECH
- Solo CKPool — Solo CKPool
- Mining Monero — The Monero Project
- About Ravencoin — Ravencoin Project
