# Solo Mining NerdMiner NerdOCTAxe Rev 3.1 on eCash (XEC)

Machine-readable solo mining datasheet for running **NerdMiner NerdOCTAxe Rev 3.1** on the **eCash (XEC)** 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: eCash (XEC) — 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: 62.15 PH/s (6.215151e+16 H/s)
- Network Hash Share: 1.929993e-04 (0.019300%)
- Expected Block Discovery: about 10.6 blocks per year (mean time: ~34.6 days)
- Operational Breakeven Electricity: 0.0601 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 | 62.15 PH/s | H/s | Total active network hash power |
| Network Difficulty | 5,774M | number | Current consensus target difficulty |
| Block Time (Observed) | 576.2 | seconds | Average interval between blocks |
| Block Reward | 1,812,500.0000 | XEC | Full coinbase block reward + fees |
| Coin Spot Price | 0.0000 | USD | Current market exchange rate |
| Single Block Value | 11.96 | USD | Gross fiat value of one block |
| Mean Time to Block | 34.6 days | time | T = (Nethash / Hashrate) * BlockTime |
| Daily Block Probability | 2.85% | percent | 24-hour Poisson chance |
| Monthly Block Probability | 58.03% | 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 | 10.5706 | count | Average over 365.25 days |
| Daily Gross Output | 52,454.940673 | XEC | Expected daily coin yield |
| Daily Gross Value | 0.35 | 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 | 0.0601 | 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 | 3.6 days | 21.0 | 1.68 USD |
| 50% Median | 50th | 24.0 days | 138.0 | 11.04 USD |
| 90% Bad Luck | 90th | 79.6 days | 458.3 | 36.66 USD |
| 95% Extreme Drought | 95th | 103.5 days | 596.2 | 47.70 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: eCash (XEC)
- Consensus: SHA-256
- Network Hashrate: 62.15 PH/s (6.215151e+16 H/s)
- Difficulty: 5,774M
- Block Time: 576.2 seconds
- Block Reward: 1,812,500.0000 XEC (approx 11.96 USD)
- Spot Price: 0.0000 USD
- Cost of Production (Flagship): 0.00 USD (Bitmain Antminer S23 XP Hyd)

## Tracked Solo Mining Pools

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

| Pool Name | Fee | Link | Low Hashrate |
| --- | --- | --- | --- |
| fenixpool.com | 0% | [fenixpool.com](https://fenixpool.com/pools/mps-xecsolo) | No |
| solohash.co.uk | 0.5% | [solohash.co.uk](https://solohash.co.uk/pool/ecash-solo) | No |
| jackpool.ru | 0.5% | [jackpool.ru](https://jackpool.ru/#xec_sha256) | No |
| mining-dutch.nl | 1% | [mining-dutch.nl](https://www.mining-dutch.nl/pools/ecash.php) | No |
| pool.kryptex.com | 1% | [pool.kryptex.com](https://pool.kryptex.com/xec) | No |
| millpools.cc | 1% | [millpools.cc](https://millpools.cc/xec-pool) | No |
| blockforgepool.com | 1% | [blockforgepool.com](https://blockforgepool.com) | No |
| heliospool.com | 1% | [heliospool.com](https://heliospool.com) | No |
| solofury.com | 1% | [solofury.com](https://solofury.com) | No |
| lmwpool.com | 1% | [lmwpool.com](https://xec.lmwpool.com) | No |

## Machine-Readable JSON Summary

```json
{
  "coin_id": "eCash",
  "coin_name": "eCash",
  "ticker": "XEC",
  "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": 6.21515060392727e+16,
  "difficulty": "5,774M",
  "block_time_seconds": 576.184,
  "block_reward_coins": 1812500.0,
  "spot_price_usd": 6.6e-06,
  "single_block_value_usd": 11.9625,
  "mean_time_to_block_seconds": 2985419.447423328,
  "daily_block_probability": 0.028525886981123794,
  "monthly_block_probability": 0.5803019302194246,
  "yearly_block_probability": 0.9999743399420713,
  "expected_blocks_per_year": 10.570574941232096,
  "daily_gross_usd": 0.3462026084448705,
  "daily_kwh": 5.76,
  "breakeven_electricity_usd_per_kwh": 0.060104619521678906,
  "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/eCash/nerdminer-nerdoctaxe-rev-3-1
- Coin datasheet: https://backpow.com/eCash.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