⛏️ Bitcoin Cash SHA256 Connection Guide

📋 What You Need

• A Bitcoin Cash Wallet Address — This is where your mining rewards will be sent. You can use any BCH wallet (Bitcoin.com, Electron Cash, Exodus, etc.). Your address starts with bitcoincash: or a legacy format.
• Mining Hardware — Any SHA-256 mining device: Bitaxe, NerdMiner, ASIC miner, or even an ESP32 hobby miner.
• Internet Connection — Your miner needs to stay connected to submit shares to the pool.

🔧 How to Connect (Step-by-Step)

Follow these simple steps to start mining:

Step 1: Choose Your Port

Scroll down to find the port that matches your miner hashrate. Using the wrong port can cause connection issues.

Step 2: Configure Your Miner

In your miner settings, enter these three pieces of information:

Replace PORT with your chosen port number (e.g., 3334 for Bitaxe). Replace YOUR_BCH_ADDRESS with your actual Bitcoin Cash address. The .workername is optional — use it to identify multiple miners.

Step 3: Start Mining

Save the settings and start your miner. Within a few minutes, you should see shares being accepted. Check your stats at bch.hmpool.io by entering your BCH address.

Step 4: Wait for Payouts

You earn a share of every block the pool finds. Once your balance reaches the minimum threshold, you will receive an automatic payout. Even tiny miners contribute and earn!

❓ Common Questions

• Why am I getting rejected shares? — Usually means you are on the wrong port for your hashrate. Try a different port with higher difficulty.
• Why do I not see my miner on the pool? — It can take 1-2 minutes after connecting. Make sure your address is entered correctly.
• How long until I get paid? — Depends on the pool finding blocks and your share of the work. Small miners may need to wait for multiple blocks to reach the minimum payout threshold.
• What is a worker name? — An optional label after your address that helps you identify which miner is which if you have multiple devices.

🔧 Port 3337 - Entry / Ultra-Low Diff

3337 Under 100 MH/s

Perfect For:

• NerdMiner-class devices
• Experimental boards and learning rigs
• Very low hashrate SHA256 devices
• NerdMiner-class devices
• Ultra-low hashrate hobby setups (NerdMiner-class) that need quick feedback

Features:

• Starting difficulty: 0.001
• VarDiff range: 0.001 - 0.05
• Frequent share submissions for instant feedback
• Target: 1 share every 15 seconds

Connection Example:

🪓 Port 3334 - Bitaxe & Solo Miners

3334 300 GH/s to 2 TH/s

Perfect For:

• Bitaxe (all models: BM1366, BM1368, BM1370, BM1397)
• NerdQAxe++ and similar high-end hobby miners
• Solo miners in the 300 GH/s - 2 TH/s range
• Tuned so Bitaxe connects cleanly with minimal rejected shares

Features:

• Starting difficulty: 2,048
• Minimum difficulty: 1,024
• VarDiff range: 1,024+
• Optimized difficulty for Bitaxe hashrates
• Target: 1 share every 15 seconds
• Auto-detection bumps difficulty for Bitaxe devices

Connection Example:

⚡ Port 3335 - GPU / Small Miner Difficulty

3335 100 MH/s to 300 GH/s

Perfect For:

• Older SHA-256 GPU experiments
• USB clusters and multi-device setups
• Small SHA-256 home mining rigs
• Low-hashrate miners that need a lower difficulty lane than port 3334

Features:

• Starting difficulty: 128
• Minimum difficulty: 1
• Use password d=1, d=8, or another low value for very low hashrate tests
• Automatic difficulty adjustment with a more realistic start for stronger small miners
• Target: 1 share every 15 seconds

Connection Example:

🏭 Port 3336 - Mid ASIC / Routed Lane

3336 2 TH/s to 20 TH/s

Perfect For:

• Antminer, Whatsminer, Avalon, and similar ASICs
• Mid-range SHA256 miners that are stronger than the small-miner lanes
• Operators who need a moderate step up in difficulty without jumping straight to the high farm lane

Features:

• Starting difficulty: 64
• VarDiff range: 64 - 4,096
• Automatic difficulty adjustment for moderate ASIC traffic
• Target: 1 share every 15 seconds
• Built for miners that do not need the much higher rental and farm difficulty range

Connection Example:

🚚 Port 3338 - Farm / High Diff Lane

3338 20 TH/s to 100 TH/s

Perfect For:

• Hosted racks and larger farm deployments
• Multiple aggregated ASICs behind one connection
• Higher-throughput connections that do not need the highest starting diff lane
• Operators who want a general large-ASIC lane

Features:

• Starting difficulty: 4,096
• VarDiff range: 4,096 - 1,048,576
• Designed for higher-throughput farm connections
• Target: 1 share every 15 seconds

Connection Example:

🚀 Port 3339 - Higher Hash Rate / High-Start Diff Lane

3339 100 TH/s to 500 TH/s

Perfect For:

• Higher hash rate ASICs that benefit from a higher starting difficulty
• Large hosted rigs and dense farm connections
• Connections that struggle to settle cleanly on port 3338
• Operators who want the highest starting diff lane

Features:

• Starting difficulty: 16,384
• VarDiff range: 16,384 - 1,048,576
• Higher starting diff for stronger hashrate connections
• Target: 1 share every 15 seconds

Connection Example:

⚡ Port 3340 - Ultra-High Hashrate (PH/s Class)

3340 500 TH/s and up

Perfect For:

• Multi-PH/s mining operations
• Large-scale NiceHash and MiningRigRentals connections
• Industrial mining farms with massive hashrate
• Any connection that needs the highest starting difficulty

Features:

• Starting difficulty: 262,144
• Minimum difficulty: 65,536
• Designed for 500 TH/s to multi-PH/s operations
• Prevents low-difficulty rejections for high-throughput connections

Connection Example:

Hashrate	Recommended Port	Difficulty Range	Example Miners
Under 100 MH/s	3337	0.001 - 0.05	NerdMiner-class devices, tiny SHA256 rigs, ultra-low-power hobby gear
100 MH/s - 2 TH/s	3334	1,024+	Bitaxe (all models), NerdQAxe++, solo miners
2 TH/s - 10 TH/s	3335	0.05 - 64	Small ASICs, USB clusters, multi-device home setups
2 TH/s - 20 TH/s	3336	64 - 4,096	Mid-range ASIC miners that do not need a very high starting difficulty
20 TH/s - 100 TH/s	3338	4,096 - 1,048,576	Larger hosted deployments and high-throughput ASIC connections
100 TH/s - 500 TH/s	3339	16,384 - 1,048,576	Higher hash rate devices that benefit from a higher starting difficulty
500 TH/s and above	3340	65,536 - 2,097,152	Ultra-high hashrate operations, PH/s class farms, industrial rentals

📊 Pool Information

• Pool Fee: 1%
• Payout Scheme: HMP FairShare + Finder's Bonus
• Minimum Payout: 10,000 sats (0.0001 BCH)
• Force Payout: 90 days (balances above dust)
• PPLNS Window: 7 days (block payouts require valid share activity within the last 15 minutes at block time)
• Loyalty continuity: Inactivity gaps over 24 hours reset loyalty continuity for bonus eligibility.
• Payout Check Interval: Every 10 minutes
• Wallet Format: Bitcoin Cash CashAddr address (q... or p...)
• Network: Bitcoin Cash SHA256 Mainnet