Which SoloFury Coin Should You Solo Mine? BTC vs BCH vs BC2 vs BCH2 vs XEC

SoloFury is the only solo mining pool that runs all 5 SHA-256 coins on the same infrastructure with a unified 1% fee. Your ASIC can switch between BTC, BCH, BC2, BCH2, and XEC by changing one line in the pool config. But which one should you actually mine?

This guide compares the 5 coins across every factor that matters for solo lottery mining, and gives you a decision tree to pick the right one for your specific hashrate, electricity cost, and risk tolerance.

1. The 5 Coins at a Glance

Every coin SoloFury supports uses the SHA-256 algorithm. They share the same chip technology, the same ASICs work on all of them, and the algorithm itself is identical. What differs is the network difficulty, the block reward, and the ecosystem behind each chain.

Coin	Algorithm	Block reward	Block time	Halving schedule
BTC	SHA-256	3.125 BTC	~10 min	4 years
BCH	SHA-256	3.125 BCH	~10 min	4 years
BC2	SHA-256	varies (check /halloffame/)	~10 min	~4 years
BCH2	SHA-256	varies (check /halloffame/)	~10 min	follows BCH
XEC	SHA-256	~3.125 XEC × 1M smallest units	~10 min	4 years (Avalanche-secured)

For up-to-date USD reward values per block, check the SoloFury Hall of Fame — every block found on SoloFury is listed there with its exact reward and on-chain transaction. This is the canonical source for current values.

2. Network Difficulty — The Single Most Important Number

Network difficulty determines the probability that any given hash you compute will be a winning block. Lower difficulty = easier blocks = better odds for small solo miners.

The 5 coins span an enormous range of difficulty:

Coin	Difficulty tier	Solo mining feasibility
BTC	Extreme (~150T+)	Realistic only for large rigs (>1 PH/s) or as ultra-low-probability lottery
BCH	High (~500G–1T)	Realistic for serious solo miners with 500 TH/s+
BC2	Medium-low	Realistic for mid-size miners (50–500 TH/s)
XEC	Low-medium	Realistic for small-to-mid setups
BCH2	Lowest of the 5	Realistic for Bitaxe-class miners (TH/s scale)

For current difficulty per coin, check the Live Stats page or the Block Explorer. These update every few minutes and reflect actual network state.

3. Expected Time to Find a Block

This is where the math gets concrete. For solo lottery mining, your expected time to find a block is:

Expected time = network_difficulty × 2³² / your_hashrate

This formula gives the mean time in seconds for the Poisson process underlying block discovery. Some realistic examples:

At 1 TH/s (Bitaxe Gamma class)

Coin	Estimated mean time to block	Realistic interpretation
BTC	50+ years	Pure lottery, do not expect to find
BCH	Several years	Pure lottery
BC2	Months to a year	Realistic but rare
XEC	Weeks to months	Realistic
BCH2	Days to weeks	Frequent enough to plan around

At 235 TH/s (Antminer S21+)

Coin	Estimated mean time to block
BTC	Years
BCH	Several months
BC2	Weeks
XEC	Days to a week
BCH2	Days

At 1 PH/s (4-5 S21+ or rented hashrate)

Coin	Estimated mean time to block
BTC	Many months to a year
BCH	Weeks to a couple months
BC2	Days to a week
XEC	Days
BCH2	Hours to days

These are mean times in a Poisson process — actual results have huge variance. A coin with a 1-week mean can find a block on day 1 or on day 30. Plan with this in mind.

For the math behind these estimates, read the Solo Mining Variance article.

4. Reward in USD — The Other Half of the Equation

Lower difficulty is great, but only if the block reward is meaningful in fiat terms. Compare expected reward across coins (check current values at Hall of Fame):

Coin	Approx reward range per block (USD, varies with price)	Variability
BTC	Highest by far (5-6 figures USD)	Most stable price
BCH	Mid-range (3-4 figures USD)	More volatile than BTC
BC2	Smaller per block, but lower difficulty compensates	Highly variable
XEC	Smaller per block at current price	Variable
BCH2	Smaller per block but easiest to find	Variable

The “value efficiency” of each coin for solo mining is approximately:

reward_USD / difficulty

Coins with a high ratio are the most efficient lottery tickets per unit of hashrate. BCH2 typically has the highest reward-per-difficulty for small-to-mid miners because its difficulty is dramatically lower than BTC while still paying real BCH-family value.

5. Coin-by-Coin Profile

Bitcoin (BTC)

The reference. Highest reward, highest difficulty, most stable price. Solo mining BTC is a once-in-a-lifetime lottery for small miners — the math says it might happen, but for any individual miner the expected time-to-block at <10 PH/s is measured in years to decades.

Mine BTC if: You have significant hashrate (>1 PH/s), or you want the ultra-low-probability shot at the biggest prize, or you specifically want to accumulate BTC and don’t mind never finding a block.

Bitcoin Cash (BCH)

Lower difficulty than BTC, real ecosystem value, mature network. The sweet spot for serious solo miners with 500 TH/s to several PH/s. Block reward is meaningful in fiat terms, difficulty is reachable.

Mine BCH if: You have 500 TH/s+ continuous hashrate, you believe in BCH long-term, or you want the most mature ecosystem outside BTC.

Bitcoin II (BC2)

A SHA-256 fork with significantly lower difficulty than BCH. Less mature ecosystem, smaller exchanges, but the lower difficulty makes it accessible to mid-size miners. Active community, real on-chain usage.

Mine BC2 if: You have 50–500 TH/s, you want regular block discovery without paying BTC-level lottery odds, or you’re a long-term believer in the BC2 ecosystem.

eCash (XEC)

The eCash project (formerly Bitcoin ABC’s chain rebranded). SHA-256 algorithm secured by both proof-of-work and an Avalanche post-consensus layer. Modern technical roadmap, lower hashrate, lower difficulty. Smallest denomination of the 5 coins.

Mine XEC if: You believe in the Avalanche-augmented model, you want to support a forward-looking SHA-256 chain, or you have a small-to-mid setup looking for regular blocks.

Bitcoin Cash II (BCH2)

The lowest difficulty of all 5 SoloFury coins. Smaller community than BCH, but for small solo miners this is the most realistic chain to find an actual block on a reasonable timeline.

Mine BCH2 if: You have Bitaxe-class hardware (1-10 TH/s), or you want to actually experience finding a block within weeks/months instead of years, or you’re using SoloFury for the first time and want to see the system work end-to-end.

6. Decision Framework — Which Coin Fits Your Hashrate?

Use this decision tree based on your continuous hashrate:

What's your continuous hashrate?

├── 1-10 TH/s (Bitaxe, NerdMiner, NerdQAxe class)
│   └── Primary: BCH2 (realistic block discovery)
│       Secondary: XEC, BC2 (variety)
│       Lottery shot: BTC (rare, but big if it hits)
│
├── 50-500 TH/s (1-2 ASICs, S19 class)
│   └── Primary: BC2 or XEC (regular blocks)
│       Secondary: BCH2 (very frequent), BCH (occasional)
│       Lottery shot: BTC (still pure lottery)
│
├── 500 TH/s - 1 PH/s (2-5 ASICs, S19/S21 class)
│   └── Primary: BCH (sweet spot for serious solo)
│       Secondary: BC2, XEC (regular blocks for variety)
│       Lottery shot: BTC (realistic but rare)
│
└── 1 PH/s+ (large fleet or rental burst)
    └── Primary: BTC (now realistic on multi-month horizon)
        Secondary: BCH (consistent revenue)
        Burst: BCH2, BC2 (use rental bursts for variety)

7. The Multi-Coin Strategy

Many SoloFury miners don’t pick one coin — they rotate between coins based on current difficulty and ecosystem developments. SoloFury makes this free: change the pool URL in your ASIC config and you’re on a different coin in seconds.

Pattern A — “Background BCH, burst BCH2”

Mine BCH continuously (real value accumulation) and switch to BCH2 for short bursts during favorable BCH2 difficulty windows. Combines stability with lottery upside.

Pattern B — “BC2 main, BCH2 weekend”

Mine BC2 during weekdays (steady block discovery), switch to BCH2 on weekends for higher block frequency. Captures the best of both.

Pattern C — “Diversified across 4 coins”

Split your fleet across 4 ASICs, each on a different coin (skip BTC unless you have >1 PH/s). Each ASIC pursues a different lottery, total expected discoveries per month go up.

Pattern D — “Difficulty hunter”

Watch the Live Stats page and rotate to whatever coin has the lowest difficulty right now (often after a downward difficulty adjustment). Highest theoretical EV but requires active management.

8. Switching Coins — Operational Steps

To switch your ASIC from one SoloFury coin to another:

1. Open your ASIC’s web UI (or fleet manager like Awesome Miner / Hive OS)
2. Update Pool 1 URL: change <oldcoin>.solofury.com:7070 to <newcoin>.solofury.com:7070
3. Update worker username: use a wallet address valid for the new coin’s format
   • BCH/BCH2: bitcoincash:qq... (CashAddr with prefix)
   • BTC/BC2: bc1q... or 1... (Bech32 or P2PKH)
   • XEC: ecash:qq... (eCash format with prefix)
4. Save — the ASIC reconnects to the new pool within seconds
5. Verify on /miner/?addr=<new_wallet>&coin=<newcoin> that shares are arriving

For step-by-step setup of pool config on different ASICs, see the Antminer S21+ Setup Guide or the Antminer S19 & Whatsminer Setup Guide.

9. Ecosystem Considerations Beyond Math

Pure expected-value math doesn’t capture all the factors. Consider:

Liquidity. BTC is liquid on every exchange in the world. BCH on most. BC2 / BCH2 / XEC on specific exchanges only. If you find a block and want to convert to fiat quickly, BTC and BCH win.

Tax implications. In most jurisdictions, finding a block is a taxable event at fair market value on the day of receipt. Smaller coins with thinner markets may have less clear “fair market value” if you need to defend a tax position.

Wallet management. BCH and BCH2 share the CashAddr format and the same wallet tools work for both. BTC and BC2 share Bech32/P2PKH. XEC has its own format. A multi-coin miner needs wallets for all the formats they touch.

Block confirmation time. All 5 coins target ~10-minute blocks, but during a difficulty drop or congestion, BC2/BCH2/XEC can have longer or shorter actual block times than the target. Monitor /explorer/ to see actual current timing.

Community size. BTC and BCH have huge communities. BC2, BCH2, XEC have smaller but active communities. For technical questions, larger communities give faster answers.

10. Quick Reference Table

The shortcut version of this guide, ordered by hashrate:

Your hashrate	Best coin	Why
Bitaxe (~1 TH/s)	BCH2	Lowest difficulty, realistic discovery
NerdQAxe (3-4 TH/s)	BCH2 or XEC	Same logic, slightly more headroom
1× S19 (~100 TH/s)	BC2 or BCH2	Mid-difficulty matches mid-hashrate
1× S21+ (~235 TH/s)	BC2, XEC, or BCH2	Good across all mid-difficulty coins
2-4× S21+ (500 TH/s - 1 PH/s)	BCH	Mature ecosystem at this scale
5+× S21+ (1 PH/s+)	BCH primary, BTC lottery	Both realistic at this scale
Rented burst (5-50 PH/s)	BCH2 for guaranteed, BTC for moonshot	Match burst size to coin difficulty

Next Steps

• Use the Solo Start configurator to generate exact pool URLs for your chosen coin and region
• Check the Live Stats page for current difficulty across all 5 coins
• Read the Owned vs Rental Cost Comparison to optimize cost-per-PH/s/day after picking a coin
• Read the Antminer S21+ Setup Guide or Antminer S19 & Whatsminer Setup Guide to configure your ASIC
• Browse the Hall of Fame to see which coins SoloFury miners are actually finding blocks on
• For background math on solo mining lottery odds, read the Solo Mining Variance article

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