# Solo Mining NerdMiner NerdOCTAxe Rev 3.1 on BitcoinII (BTCII)

Machine-readable solo mining datasheet for running **NerdMiner NerdOCTAxe Rev 3.1** on the **BitcoinII (BTCII)** SHA-256 network. Evaluates hashrate output, electrical operational expenditure, Poisson block-finding probabilities, and mining economics tracked by BackPoW.

## Executive Summary

- Target Rig: NerdMiner NerdOCTAxe Rev 3.1 (ASIC)
- Target Network: BitcoinII (BTCII) — Algorithm: SHA-256
- Rig Hashrate: 12.00 TH/s (1.199520e+13 H/s)
- Power Consumption: 240 W (5.76 kWh/day)
- Energy Efficiency: 20.01 J/TH
- Network Hashrate: 10.46 PH/s (1.045879e+16 H/s)
- Network Hash Share: 1.146901e-03 (0.114690%)
- Expected Block Discovery: about 28.5 blocks per year (mean time: ~12.8 days)
- Operational Breakeven Electricity: 0.0680 USD/kWh

## Solo Mining Metrics Table

| Metric | Value | Unit | Description |
| --- | --- | --- | --- |
| Mining Device | NerdMiner NerdOCTAxe Rev 3.1 | text | Hardware model name |
| Device Class | ASIC | text | ASIC, GPU, or CPU architecture |
| Device Hashrate | 12.00 TH/s | H/s | Nominal hashrate on SHA-256 |
| Device Power Draw | 240 | Watts | Power consumption at wall |
| Energy Efficiency | 20.01 J/TH | unit | Energy per unit hash computation |
| Network Hashrate | 10.46 PH/s | H/s | Total active network hash power |
| Network Difficulty | 2,698M | number | Current consensus target difficulty |
| Block Time (Observed) | 1271.0 | seconds | Average interval between blocks |
| Block Reward | 50.0000 | BTCII | Full coinbase block reward + fees |
| Coin Spot Price | 0.1005 | USD | Current market exchange rate |
| Single Block Value | 5.02 | USD | Gross fiat value of one block |
| Mean Time to Block | 12.8 days | time | T = (Nethash / Hashrate) * BlockTime |
| Daily Block Probability | 7.50% | percent | 24-hour Poisson chance |
| Monthly Block Probability | 90.36% | percent | 30-day Poisson chance |
| 1-Year Block Probability | 99.99% | percent | 365-day Poisson chance |
| 3-Year Block Probability | 99.99% | percent | 3-year cumulative chance |
| Expected Blocks / Year | 28.4764 | count | Average over 365.25 days |
| Daily Gross Output | 3.898201 | BTCII | Expected daily coin yield |
| Daily Gross Value | 0.39 | USD | Revenue before power costs |
| Daily Energy Consumed | 5.76 | kWh/day | Kilowatt-hours consumed |
| Power Cost @ 0.05 USD/kWh | 0.29 | USD/day | Low industrial tariff |
| Power Cost @ 0.08 USD/kWh | 0.46 | USD/day | Standard mining tariff |
| Power Cost @ 0.10 USD/kWh | 0.58 | USD/day | Residential tariff |
| Breakeven Electricity | 0.0680 | USD/kWh | Max rate before loss |
| Hardware Price | Market dependent | USD | Market range (min / med / max) |

## Poisson Block Discovery Model & Variance

Solo mining block discovery follows a memoryless Poisson process where every hash attempt has an identical, independent success probability.

- Formula: `P(X >= 1) = 1 - exp(-t / T)`
- `t` is mining duration in seconds
- `T` is mean time between blocks: `T = (Network Hashrate / Miner Hashrate) * Block Time`

Luck percentile table (reference electricity rate 0.08 USD/kWh):

| Luck Scenario | Percentile | Duration | Power (kWh) | Cost @ 0.08 |
| --- | --- | --- | --- | --- |
| 10% Lucky Hit | 10th | 32.4 hours | 7.8 | 0.62 USD |
| 50% Median | 50th | 8.9 days | 51.2 | 4.10 USD |
| 90% Bad Luck | 90th | 29.5 days | 170.1 | 13.61 USD |
| 95% Extreme Drought | 95th | 38.4 days | 221.3 | 17.71 USD |

## Hardware Benchmark Profile

- Device: NerdMiner NerdOCTAxe Rev 3.1
- Slug: nerdminer-nerdoctaxe-rev-3-1
- Architecture: ASIC
- Algorithm: SHA-256
- Hashrate: 12.00 TH/s
- Power: 240 W
- Efficiency: 20.01 J/TH
- Market Cost: Market dependent

## Blockchain Network Overview

- Blockchain: BitcoinII (BTCII)
- Consensus: SHA-256
- Network Hashrate: 10.46 PH/s (1.045879e+16 H/s)
- Difficulty: 2,698M
- Block Time: 1271.0 seconds
- Block Reward: 50.0000 BTCII (approx 5.02 USD)
- Spot Price: 0.1005 USD
- Cost of Production (Flagship): 0.07 USD (Bitmain Antminer S23 XP Hyd)

## Tracked Solo Mining Pools

Solo pools for BitcoinII (BTCII) routing 100% of block rewards to the miner address:

| Pool Name | Fee | Link | Low Hashrate |
| --- | --- | --- | --- |
| sneakattack.se | 0% | [sneakattack.se](https://sneakattack.se) | No |
| mining-dutch.nl | 1% | [mining-dutch.nl](https://www.mining-dutch.nl/pools/bitcoinii.php) | No |
| solofury.com | 1% | [solofury.com](https://solofury.com) | No |
| 1miner.net | 1% | [1miner.net](https://1miner.net/#bc22) | No |
| hashpoolpro.com | 1% | [hashpoolpro.com](https://hashpoolpro.com) | No |
| capspool.io | 1% | [capspool.io](https://capspool.io) | No |
| solopool.org | 2% | [solopool.org](https://bc2.solopool.org) | No |
| molepool.com | 2% | [molepool.com](https://bc2.molepool.com) | No |
| public-pool-btc.ru | 0% | [public-pool-btc.ru](https://public-pool-btc.ru) | Yes |
| thesatoshipool.cloud | 0% | [thesatoshipool.cloud](https://www.thesatoshipool.cloud/#BitcoinIISOLO) | Yes |

## Machine-Readable JSON Summary

```json
{
  "coin_id": "BitcoinII",
  "coin_name": "BitcoinII",
  "ticker": "BTCII",
  "algorithm": "SHA-256",
  "hardware_name": "NerdMiner NerdOCTAxe Rev 3.1",
  "hardware_slug": "nerdminer-nerdoctaxe-rev-3-1",
  "hardware_type": "ASIC",
  "miner_hashrate_h_s": 11995200000000.0,
  "power_watts": 240.0,
  "efficiency": "20.01 J/TH",
  "network_hashrate_h_s": 1.0458790479803006e+16,
  "difficulty": "2,698M",
  "block_time_seconds": 1271.0,
  "block_reward_coins": 50.0,
  "spot_price_usd": 0.100453,
  "single_block_value_usd": 5.02265,
  "mean_time_to_block_seconds": 1108203.5063883571,
  "daily_block_probability": 0.07500229235711198,
  "monthly_block_probability": 0.9035683287032614,
  "yearly_block_probability": 0.9999999999995706,
  "expected_blocks_per_year": 28.4763581942151,
  "daily_gross_usd": 0.3915859835295673,
  "daily_kwh": 5.76,
  "breakeven_electricity_usd_per_kwh": 0.06798367769610544,
  "hardware_price_usd": null,
  "retrieved_utc": "2026-10-21T18:57:14Z"
}
```

## Provenance & Integration Links

- Retrieved: 2026-10-21T18:57:14Z
- Canonical HTML page: https://backpow.com/BitcoinII/nerdminer-nerdoctaxe-rev-3-1
- Coin datasheet: https://backpow.com/BitcoinII.md
- Hardware datasheet: https://backpow.com/hardware/nerdminer-nerdoctaxe-rev-3-1.md
- Solo pools directory: https://backpow.com/solo-pools.md
- Live queries over MCP: https://mcp.backpow.com/mcp (tools `calculate_solo_mining_odds`, `get_hardware_benchmarks`)
- Licence: CC BY 4.0 — https://backpow.com/llms.txt