# Solo Mining Bitaxe NerdQaxe++ on eCash (XEC)

Machine-readable solo mining datasheet for running **Bitaxe NerdQaxe++** 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: Bitaxe NerdQaxe++ (ASIC)
- Target Network: eCash (XEC) — Algorithm: SHA-256
- Rig Hashrate: 4.81 TH/s (4.807680e+12 H/s)
- Power Consumption: 76 W (1.82 kWh/day)
- Energy Efficiency: 15.81 J/TH
- Network Hashrate: 49.46 PH/s (4.946216e+16 H/s)
- Network Hash Share: 9.719915e-05 (0.009720%)
- Expected Block Discovery: about 4.9 blocks per year (mean time: ~74.0 days)
- Operational Breakeven Electricity: 0.1023 USD/kWh

## Solo Mining Metrics Table

| Metric | Value | Unit | Description |
| --- | --- | --- | --- |
| Mining Device | Bitaxe NerdQaxe++ | text | Hardware model name |
| Device Class | ASIC | text | ASIC, GPU, or CPU architecture |
| Device Hashrate | 4.81 TH/s | H/s | Nominal hashrate on SHA-256 |
| Device Power Draw | 76 | Watts | Power consumption at wall |
| Energy Efficiency | 15.81 J/TH | unit | Energy per unit hash computation |
| Network Hashrate | 49.46 PH/s | H/s | Total active network hash power |
| Network Difficulty | 6,364M | number | Current consensus target difficulty |
| Block Time (Observed) | 621.3 | 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 | 13.81 | USD | Gross fiat value of one block |
| Mean Time to Block | 74.0 days | time | T = (Nethash / Hashrate) * BlockTime |
| Daily Block Probability | 1.34% | percent | 24-hour Poisson chance |
| Monthly Block Probability | 33.34% | percent | 30-day Poisson chance |
| 1-Year Block Probability | 99.28% | percent | 365-day Poisson chance |
| 3-Year Block Probability | 99.99% | percent | 3-year cumulative chance |
| Expected Blocks / Year | 4.9370 | count | Average over 365.25 days |
| Daily Gross Output | 24,499.017776 | XEC | Expected daily coin yield |
| Daily Gross Value | 0.19 | USD | Revenue before power costs |
| Daily Energy Consumed | 1.82 | kWh/day | Kilowatt-hours consumed |
| Power Cost @ 0.05 USD/kWh | 0.09 | USD/day | Low industrial tariff |
| Power Cost @ 0.08 USD/kWh | 0.15 | USD/day | Standard mining tariff |
| Power Cost @ 0.10 USD/kWh | 0.18 | USD/day | Residential tariff |
| Breakeven Electricity | 0.1023 | USD/kWh | Max rate before loss |
| Hardware Price | 340 / 400 / 460 USD | 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 | 7.8 days | 14.2 | 1.14 USD |
| 50% Median | 50th | 51.3 days | 93.5 | 7.48 USD |
| 90% Bad Luck | 90th | 170.4 days | 310.7 | 24.86 USD |
| 95% Extreme Drought | 95th | 221.6 days | 404.3 | 32.34 USD |

## Hardware Benchmark Profile

- Device: Bitaxe NerdQaxe++
- Slug: bitaxe-nerdqaxe-1
- Architecture: ASIC
- Algorithm: SHA-256
- Hashrate: 4.81 TH/s
- Power: 76 W
- Efficiency: 15.81 J/TH
- Market Cost: 340 / 400 / 460 USD

## Blockchain Network Overview

- Blockchain: eCash (XEC)
- Consensus: SHA-256
- Network Hashrate: 49.46 PH/s (4.946216e+16 H/s)
- Difficulty: 6,364M
- Block Time: 621.3 seconds
- Block Reward: 1,812,500.0000 XEC (approx 13.81 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 |
| solofury.com | 1% | [solofury.com](https://solofury.com) | No |
| heliospool.com | 1% | [heliospool.com](https://heliospool.com) | No |
| lmwpool.com | 1% | [lmwpool.com](https://xec.lmwpool.com) | No |
| solopool.eu | 1% | [solopool.eu](https://solopool.eu) | No |

## Machine-Readable JSON Summary

```json
{
  "coin_id": "eCash",
  "coin_name": "eCash",
  "ticker": "XEC",
  "algorithm": "SHA-256",
  "hardware_name": "Bitaxe NerdQaxe++",
  "hardware_slug": "bitaxe-nerdqaxe-1",
  "hardware_type": "ASIC",
  "miner_hashrate_h_s": 4807680000000.0,
  "power_watts": 76.0,
  "efficiency": "15.81 J/TH",
  "network_hashrate_h_s": 4.94621614265432e+16,
  "difficulty": "6,364M",
  "block_time_seconds": 621.306,
  "block_reward_coins": 1812500.0,
  "spot_price_usd": 7.62e-06,
  "single_block_value_usd": 13.81125,
  "mean_time_to_block_seconds": 6392092.998552285,
  "daily_block_probability": 0.013425759079714217,
  "monthly_block_probability": 0.33335725008914585,
  "yearly_block_probability": 0.9928237224598137,
  "expected_blocks_per_year": 4.936974478804881,
  "daily_gross_usd": 0.18668251545624617,
  "daily_kwh": 1.8239999999999998,
  "breakeven_electricity_usd_per_kwh": 0.10234787031592445,
  "hardware_price_usd": {
    "min": 340.0,
    "median": 400.0,
    "max": 460.0
  },
  "retrieved_utc": "2026-10-07T20:25:28Z"
}
```

## Provenance & Integration Links

- Retrieved: 2026-10-07T20:25:28Z
- Canonical HTML page: https://backpow.com/eCash/bitaxe-nerdqaxe-1
- Coin datasheet: https://backpow.com/eCash.md
- Hardware datasheet: https://backpow.com/hardware/bitaxe-nerdqaxe-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