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Siacoin and BTCB2 Miners: Blake2b-Sia ASIC Profit
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| Model |
Profitability
Profit
|
|---|---|
iBeLink BM-S3 Plus
Blake2b-Sia · 25TH/s
|
$95.95
/day
|
|
iBeLink BM-S3
Blake2b-Sia · 19TH/s
|
$71.93
/day
|
Goldshell SC6 SE
Blake2b-Sia · 17TH/s
|
$63.35
/day
|
|
Goldshell SC5 Pro 2
Blake2b-Sia · 14TH/s
|
$51.05
/day
|
|
iBeLink BM-S1 Max
Blake2b-Sia · 12TH/s
|
$43.14
/day
|
|
Goldshell SC5 Pro
Blake2b-Sia · 11TH/s
|
$39.68
/day
|
|
iBeLink BM-S1
Blake2b-Sia · 6.8TH/s
|
$23.36
/day
|
|
Goldshell SC Lite
Blake2b-Sia · 4.4TH/s
|
$16.21
/day
|
|
Goldshell SC-BOX 2
Blake2b-Sia · 1.9TH/s
|
$7.02
/day
|
|
Goldshell SC-BOX
Blake2b-Sia · 900GH/s
|
$3.31
/day
|
Our cutting-edge mining calculator offers comprehensive insights across all major cryptocurrency algorithms, helping users easily identify the most profitable options for their specific hardware. The algorithm data is continuously refreshed to keep pace with the dynamic crypto mining industry, providing accurate evaluations based on real-time profitability statistics and overall market activity. This empowers users to make well-informed choices that reflect the latest mining conditions and algorithm performance.
- Network hashrate
- 7.20 PH/s
- Difficulty
- 3,535.44 P
- Block reward
- 30,000 SC
- Block time
- 8.2 min
- Network hashrate
- 46.10 PH/s
- Difficulty
- 6.33 B
- Block reward
- 3.125 BTCB2
- Block time
- 9.8 min
Every Blake2b-Sia miner we track is in the table above, ranked by profit at your electricity rate.
What is BTCB2 and why Sia miners can mine it
BTCB2, short for Bitcoin Blake2B, is a fork of Bitcoin that keeps the Bitcoin ledger and block reward but replaced SHA-256 with the Blake2b-Sia proof of work. Some exchanges and pools list it under the ticker XBT.
Blake2b-Sia is the hash that Sia ASIC miners were built for, so the same machines can point at BTCB2 with no hardware change, only a different pool. That pulled hashrate from idle Sia miners and from hashrate rental markets onto the new chain.
How our profit picks the better of BTCB2 and Siacoin
For every Blake2b-Sia miner we calculate the income per terahash of BTCB2 and of Siacoin from their live difficulty, block reward and price, subtract electricity at the rate you enter, and show the better of the two as the profit.
Because both networks are small and their difficulty moves quickly, the better coin for the same machine can flip from one day to the next, so the ranking in the table is a live answer, not a fixed recommendation.
BTCB2 vs Siacoin on the same Blake2b-Sia miner
Both coins use the same hash, so the same machine can mine either one. Three things decide which pays more.
Price and liquidity
Siacoin is listed on well-known exchanges, while BTCB2 trades on only a few small ones with thin volume, so its price can move sharply and is harder to sell into.
Network hashrate
Hashrate that leaves one chain for the other lowers difficulty on the first and raises it on the second, so the better coin can change within days.
Block reward
Siacoin pays a fixed floor reward per block and BTCB2 pays the reward it inherited from Bitcoin, so we convert each coin into income per terahash at the live difficulty and compare those.
Open the BTCB2 calculator or the Siacoin calculator to see each coin on its own, with the hashrate, power and electricity rate you enter.
Rent out your BTCB2 and Siacoin hashrate on MiningRigRentals
Every Blake2b-Sia miner page also shows a separate MiningRigRentals row: what the machine would earn if you rented its hashrate out instead of mining. It is never part of the headline profit, so you can compare the two side by side.
Renting swaps the coin risk for a rental price set by the market and leaves the exposure to the coin with the renter, but rental demand rises and falls with the same hype that drives the coins, and a rental that looks obviously profitable is usually already priced in. Mining directly keeps both the upside and the downside of the coin.
BTCB2 mining risks, and how to start with a Sia ASIC
BTCB2 is a young chain with thin liquidity: its price can move sharply, a block reward is only worth what you can sell it for, and a small hashrate base makes the chain easier to disrupt.
Both networks are small, so difficulty can rise quickly when hardware or rented hashrate arrives, and a profit figure that looks good today can shrink within days. Our figures are estimates from live data, not a promise, and nothing on this page is investment advice.
To start, point your Blake2b-Sia miner at a pool that lists BTCB2 and follow that pool's own setup page; compare pools on our pool list and open the BTCB2 calculator for the live figures.
The chain that fired its own ASICs
Sia's mining history explains why Blake2b-Sia hardware is rare, and why it is worth tracking anyway.
The first Sia ASICs
Obelisk shipped the first Blake2b miner designed for Sia, and Bitmain and Innosilicon followed with far larger units almost immediately.
The fork that chose its hardware
Sia changed its proof of work so that only the Obelisk hardware kept working, one of the few chains to deliberately invalidate an existing ASIC fleet.
One hash, two coins
Blake2b-Sia mining is no longer only Siacoin: BTCB2, a Bitcoin fork that adopted the same proof of work, put idle Sia machines back to work. The table above lists every Blake2b-Sia miner we track and rates each one by the better-paying of the two coins.
What to expect from Blake2b-Sia mining
Blake2b-Sia is the proof of work behind Siacoin and, since the fork, behind BTCB2 as well. It is built on the fast 64-bit Blake2b hash, but the block header layout and nonce position are Sia's own, so a general Blake2b chip or a GPU kernel written for another coin cannot simply be pointed at it. Dedicated ASICs can: the first Sia machines from Obelisk, Bitmain and Innosilicon were followed by units such as the Goldshell SC Box, the SC5 Pro and the iBeLink BM-S3. The algorithm needs very little silicon, so these machines are inexpensive to build and light on power, and for years Siacoin was the only coin they could mine. That changed when BTCB2 chose the same construction, which put idle Sia hardware back to work and gave owners a second coin to choose between. Each machine is rated by the better of the two at the live difficulty, price and your electricity rate, so the table shows what a Blake2b-Sia miner earns today, not what it earned when it was bought. Both networks are small, so one more machine moves the difficulty, and that is why the figures are recalculated every few minutes.
Blake2b is a fast, simple hash that ASICs implement with very little silicon, so a Blake2b-Sia miner is cheap to build and cheap to run. The catch is the other side of the same coin: both networks that use it are small, so a single large machine is a meaningful share of either one, and the difficulty responds quickly when hardware arrives or leaves.
Siacoin's block reward sits at a fixed floor rather than halving, and BTCB2 inherited Bitcoin's block reward, so for both coins the daily figure is driven mostly by price and network hashrate, which are the two inputs you can watch before you decide.
How to choose among the Blake2b-Sia miners
Efficiency first
Joules per terahash decides what electricity costs you per coin; at a high electricity rate the most efficient machine wins even if it is not the fastest.
Size, noise and space
The smallest units are quiet enough for a desk or a trial run, while the largest machines are loud, need proper ventilation and a stronger power circuit.
Price against payback
Open a miner page for current offers and payback; on young, volatile networks a short payback is worth more than a high headline hashrate.
Second-hand machines
Many of these machines are several years old, so check the seller, the condition of the hashboards and the warranty before you pay, and remember that demand can push used prices above what the profit justifies.
Go deeper on Siacoin and BTCB2
Income, cost and profit for Blake2b-Sia hashrate on the Bitcoin Blake2B chain.
→Income, cost and profit for Blake2b-Sia hashrate on Siacoin.
→Compare pools and check which ones list Siacoin or BTCB2.
→How the fork happened, why Sia hardware matters again and how hashrate rental works.
→About the Blake2b algorithm
Blake2b-Sia is a Proof of Work construction that hashes a compact block header with Blake2b-256 and compares the result to a difficulty target. The work per hash is tiny, so a purpose-built chip can pack a very large number of hash cores onto a small die. That is why Blake2b-Sia ASICs reach terahashes and petahashes per second on a few hundred watts, and why general-purpose hardware has no chance against them. Two networks use it today. Siacoin secures a decentralized storage market; its block reward starts high, falls by one coin per block and settles at a fixed floor, so income changes mostly with price and network hashrate. BTCB2 is a Bitcoin fork that inherited Bitcoin's chain and block reward and moved to the same hash, so its income depends on how much hashrate chases it. When hashrate leaves one chain for the other, difficulty and daily income move quickly on both, which makes this a market to watch rather than to set and forget. Plain Blake2b, the RFC 7693 hash used in libraries, password hashing and other chains, is a different listing and is not compatible with these machines. On MinerCompare the profit of a miner is its hashrate multiplied by the better of the two coins' income per hash, minus electricity at the rate you enter.
Siacoin and BTCB2 ASIC mining, answered
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