ASIC miners · Blake2b-Sia
BTCB2 and Siacoin miners (Blake2b-Sia)
ASIC miners for the Blake2b-Sia algorithm – iBeLink BM-S and Goldshell SC. They mine BTCB2 (Bitcoin BLAKE2b, a 2026 Bitcoin fork) as well as Siacoin; switching between coins is just a change of pool. For every machine you can see the hashrate in TH/s, power draw and today's earnings in CZK.
BTCB2 is a young coin with low liquidity and the network rules are still changing, so take the earnings figures with caution and follow the latest news. We sell miners with an invoice and warranty, and you can place them in our hosting.
- 8models available
- 1.9–25 TH/s hashrate
- from 136 J/THefficiency
- from 22 585 Kčprice
- Air 8 cooling
- up to ≈ 2,139 Kčrevenue / day today (before electricity)
Profit = today’s revenue based on network difficulty and the exchange rate − electricity at the selected price. Our hosting = the cheapest location with free capacity (Nigeria #2), price converted from USD at today’s exchange rate. Revenue changes; this is not a forecast.
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Mining sets
Miner with infrastructure – 2 % cheaper
ASIC with a soundproof box, water cooling, an ANTRACK rack or a whole container. We assemble, test and configure it.
from 32,099 Kč
View sets →
How to choose a BTCB2 and Siacoin miner
First decide where the machine will run – that determines the cooling. For each type we show the machines from this collection that earn the most today from 1 kWh of electricity.
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hosting, workshop
Air-cooled
The most common and cheapest option: fans cool the machine, so it only needs a supply of cool air and a way to remove the heat. It is loud, though (usually 70–80 dB), so it does not belong in a flat – it suits our hosting, a workshop or a plant room, and at home only with a soundproof box.
8 models in this collection, most profitable per 1 kWh:
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iBeLink BM-S3+ 25 TH/s
25 TH/s · 3400 W
from 434 025 Kč
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iBeLink BM-S3 19 TH/s
19 TH/s · 3100 W
from 375 429 Kč
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quieter, heat for heating
Hydro (water cooling)
A liquid in a closed loop cools the chips and a dry cooler or heat exchanger removes the heat. Hydro machines are quieter and more powerful, but they need a water loop and usually a three-phase supply. You can use the heat to warm water or for heating.
There are none in this collection right now. Write to us – we will check availability.
Water loops for Hydro -
farms, almost silent
Immersion cooling
The machine is submerged in dielectric fluid in an immersion tank – it is almost silent and the chips stay at an even temperature. It needs a tank, a pump and a cooler, so it is best suited to farms and hosting.
There are none in this collection right now. Write to us – we will check availability.
Immersion tanks and fluid
BTCB2 and Siacoin miner comparison
Sorted from the most efficient – fewest joules per unit of hashrate. We recalculate revenue every hour, and profit using the electricity price selected above the miners: on hosting at 1.14 Kč/kWh.
| Model | Hashrate | Power | Efficiency | Cooling | Noise | Price from | Revenue / day | Profit / day |
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| iBeLink BM-S3+ 25 TH/s | 25 TH/s | 3,400 W | 136 J/TH | Air | 75 dB | from 434 025 Kč | 2,139 Kč | 2,046 Kč |
| iBeLink BM-S3 19 TH/s | 19 TH/s | 3,100 W | 163 J/TH | Air | 75 dB | from 375 429 Kč | 1,626 Kč | 1,541 Kč |
| Goldshell SC6 SE 17 TH/s | 17 TH/s | 3,330 W | 196 J/TH | Air | 80 dB | from 316 832 Kč | 1,455 Kč | 1,364 Kč |
| Goldshell SC Box II | 1.9 TH/s | 400 W | 211 J/TH | Air | 35 dB | from 22 585 Kč | 163 Kč | 152 Kč |
| Goldshell SC Lite 4.4 TH/s | 4.4 TH/s | 950 W | 216 J/TH | Air | 55 dB | from 133 784 Kč | 377 Kč | 351 Kč |
| Goldshell SC5 Pro II 14 TH/s | 14 TH/s | 3,300 W | 236 J/TH | Air | 55 dB | from 271 257 Kč | 1,198 Kč | 1,108 Kč |
| Goldshell SC5 Pro 11 TH/s | 11 TH/s | 2,820 W | 256 J/TH | Air | 55 dB | from 212 661 Kč | 941 Kč | 864 Kč |
| iBeLink BM-S1 Max 12 TH/s | 12 TH/s | 3,150 W | 263 J/TH | Air | 75 dB | from 208 321 Kč | 1,027 Kč | 941 Kč |
Hashrate, power draw and noise are stated by the manufacturers. Efficiency = power draw ÷ hashrate. Revenue = hashrate × today’s revenue of the algorithm’s most profitable coin (before electricity and pool fees); profit = revenue − electricity at the selected price. For machines with several hashrate options we use the base hashrate from the product card.
At home or on our hosting?
The result of mining depends mainly on the electricity price. Comparison for the machine in this collection that earns the most per 1 kWh – iBeLink BM-S3+ 25 TH/s.
At home or at your business
- Grid electricity costs a Czech household roughly 4.5–6.5 Kč/kWh (2026); it is cheaper from your own solar panels or on a business tariff.
- A powerful ASIC needs its own circuit and ventilation, and you have to expect noise – air-cooled machines are usually 70–80 dB.
- You can use the miner’s heat for heating, but in summer you have to get rid of it.
Profit at 4.5 Kč/kWh: 1,772 Kč / day
On our hosting
- Electricity from 1.14 Kč/kWh including management (Nigeria #2), 7 locations with free capacity.
- With prepaid electricity, up to 30% cheaper.
- New miners bought from us that run on our hosting come with a 7-year warranty. We take care of noise, cooling and repairs.
Profit at 1.14 Kč/kWh: 2,046 Kč / day
Profit = today’s revenue − electricity for 24 hours, before pool fees. Network difficulty and the exchange rate change; this is neither a forecast nor a promise of revenue.
FAQ about BTCB2 and Siacoin miners
What is BTCB2 and why is it mined on Sia miners?
BTCB2 (Bitcoin BLAKE2b) is a Bitcoin fork that has used the BLAKE2b algorithm since August 2026. ASIC miners for Siacoin are built for this algorithm, so they can mine it. More in the article BTCB2 (Bitcoin BLAKE2b).
How much does a BTCB2 miner earn per day?
We recalculate revenue every hour from network difficulty and the BTCB2 exchange price. The coin is young and both price and difficulty can change quickly, so this is only today's estimate, not a forecast. The switch above the listings shows the profit after electricity.
What does the freeze on miner rewards mean?
Since September 2026, miners cannot spend BTCB2 block rewards for roughly 45 days. You therefore receive revenue with a delay and bear the risk of price changes. Details in the news item BTCB2 reward freeze.
Can I mine Siacoin instead of BTCB2?
Yes, just set a Siacoin pool in the miner. The coin card at the top shows which of the two earns more today; revenue on the cards is calculated from the more profitable one. We write about Siacoin in the article Siacoin (SC).
Where can I sell BTCB2?
So far BTCB2 trades only on a small number of exchanges with low liquidity. Before you buy a machine, bear in mind that larger amounts may not sell straight away at the displayed price.
