🚀 Launch Promo: 0.25% Pool Fee

🇺🇸 Region: US East (North America)

Sentinel BTCB2 Mining Pool

Sentinel Defense Technologies • Native Sia-compatible Stratum V1 for BM-S3, BM-S3+, S11, A3, SC1 & GPU/CPU rigs.

Current Fee

0.25%

Reward Method

PPLNS-8D

Mining Connection Endpoint

Region: US East (Philadelphia Metro / FiOS Fiber)

Primary Stratum Endpoint US East Regional • Port 23339

Stock Sia-Stratum V1 ASIC Compatible

stratum+tcp://us-east.stratum.sentineldefensetechnologies.co.za:23339

Ultra-low latency fiber path for North American and global miners. Capacity: 128 max sessions.

Miner Worker Username Format:

YOUR_BTCB2_PAYOUT_ADDRESS.WorkerName

Password: x

No account required. Rewards credit directly to your address.

Why Mine with Sentinel BTCB2 Pool

1. 0.25% Launch Fee

Published transparent fee schedule permanently capped at 1.00% maximum.

2. Work-Weighted PPLNS-8D

Weights shares by true hash work (W = Diff × 2³²) over 8 difficulties, eliminating high-diff ASIC penalties.

3. Zero Registration

Mine directly to any Bech32 Bitcoin address. Zero accounts, passwords, or custodial holding.

4. Stock ASIC Firmware

100% native Sia-Stratum compatibility with stock factory firmware for BM-S3, S11, A3, SC1.

5. Provable Key Isolation

Zero private keys on Internet-facing pool hosts. Block rewards are split directly in coinbase templates.

Live Pool Telemetry

Auto-refreshing every 5s

Pool Hashrate

10-min rolling accepted work

Active Workers

-- open connections

Network Block Height

-- BTC Reward

Network Difficulty

-- blocks to retarget

Miner Statistics Lookup

Enter your BTCB2 payout address (e.g. bc1q...) to see your accepted work in the 8D PPLNS window.

Hardware Compatibility & Configuration

All standard Sia-generation BLAKE2b ASICs mine with 100% stock factory firmware.

iBeLink BM-S3 / S3+ Tier 1 ASIC

• Nominal: 19.0 TH/s @ 3100W

• Target Vardiff: 131,072

• Firmware: Stock factory firmware

Pool: us-east.stratum.sentineldefensetechnologies.co.za:23339
User: bc1q...YourAddr.BM_S3
Pass: x

Innosilicon S11 SiaMaster

• Nominal: 3.8 TH/s @ 1350W

• Target Vardiff: 32,768

• Firmware: Stock factory firmware

Pool: us-east.stratum.sentineldefensetechnologies.co.za:23339
User: bc1q...YourAddr.S11
Pass: x

Bitmain Antminer A3 Legacy ASIC

• Nominal: 815 GH/s @ 1275W

• Target Vardiff: 8,192

• Firmware: Stock factory firmware

Pool: us-east.stratum.sentineldefensetechnologies.co.za:23339
User: bc1q...YourAddr.A3
Pass: x

Obelisk SC1 / GPU / CPU All Rigs

• SC1: 550 GH/s @ 500W

• Minimum Vardiff: 1

• Automatic ramp: Dynamic vardiff

Pool: us-east.stratum.sentineldefensetechnologies.co.za:23339
User: bc1q...YourAddr.Worker
Pass: x

Pool Specifications & Policy

Click to expand details

📊 Transparent Fee Policy (0.25% Active Launch Promo)

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No hidden fees, no silent changes. Pool fees are hardcoded into block coinbase templates and auditable on-chain.

30-Day Unique Miners	Pool Fee	Status
0 – 24 Unique Miners	0.25% (25 bps)	CURRENT ACTIVE TIER
25 – 99 Unique Miners	0.50% (50 bps)	Upcoming
100 – 249 Unique Miners	0.75% (75 bps)	Upcoming
250+ Unique Miners	1.00% (100 bps)	Long-term Cap

• Anti-Gaming Rule: Tiers count unique payout wallet addresses, never worker names or connection counts.

• 14-Day Advance Notice: Any fee adjustment requires sustaining the threshold for 30 consecutive days and a mandatory 14-day advance notice.

⚖️ Why Work-Weighted PPLNS-8D Matters for ASICs

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Traditional pools count raw share rows equally. This penalizes high-difficulty ASICs: submitting 1 share at diff 131,072 represents the same expected work as 128 shares at diff 1,024.

Work_j = Difficulty_j × 2^32

Our pool calculates reward shares strictly proportional to total expected hashes performed across the last 8 network difficulties of accepted work.

Coinbase rewards are split directly inside the block transaction (up to 512 outputs). Balances under the 546-sat dust limit roll up into the persistent owed ledger for subsequent block payouts.

❓ Frequently Asked Questions

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Do I need custom firmware for BM-S3?

No. Standard factory stock firmware is 100% supported. The gateway automatically adapts the BTCB2 work header to what the ASIC expects.

When do mining rewards mature?

Per Bitcoin consensus rules, coinbase transactions require 100 block confirmations before funds become spendable on-chain.

What is the minimum payout threshold?

Minimum payout per block is 546 satoshis (standard Bitcoin dust limit). Sub-546 balances roll into the owed ledger for the next pool block.

Is this pool protected against block withholding?

Yes. Built on the DATUM protocol with anti-block-withholding assignment slots to protect all honest miners.