Goldshell SC5 Pro II 14T and the BLAKE2b Bitcoin Fork: Why Buyers Are Reserving Early
Market Update · September 1
Goldshell SC5 Pro II 14T and the BLAKE2b Bitcoin Fork: Why Buyers Are Reserving Early
The 14 TH/s Goldshell SC5 Pro II is arriving just as the BLAKE2b Bitcoin fork brings fresh attention to Sia-class miners. Here is why early inventory matters and what buyers should know before reserving a unit.
Editorial and commercial disclosure
Bitark sells cryptocurrency mining hardware and has reserved forward inventory of the Goldshell SC5 Pro II through its supplier relationship. Availability, delivery dates, pricing and network conditions may change, so customers should confirm the latest reservation terms before ordering.
Prepared and reviewed by the Bitark Editorial Team using the sources listed below. Technical claims, dates and product details were checked before publication. The header image is an original editorial illustration, not a product photograph.
The quick answer
The Goldshell SC5 Pro II 14T is the next-generation successor to the 11 TH/s SC5 Pro. It delivers 14 TH/s on the Blake2B-Sia algorithm at a rated 3,300 W, and Bitark has already secured a forward allocation through its Goldshell supplier relationship.
Interest has accelerated since the BLAKE2b Bitcoin branch went live. By September 1, signed RC5 had preserved the RC4 chain history, the public explorer had reached block 963,405, and a Goldshell SC Box had recorded accepted work and three blocks. For buyers, the practical takeaway is simple: Sia-class hardware is attracting attention before the SC5 Pro II reaches broad retail availability.
Where the BLAKE2b fork stands now
Bitcoin Knots tagged RC4 at 02:09 UTC on August 30, with BLAKE2b activation set for block 961,640. The first BLAKE2b block appeared on the public explorer at 06:14:37 UTC. Signed RC5 followed on September 1 and kept the same chain history, adding a checkpoint at the activation block rather than starting over.
When Bitark checked the explorer at 12:52:53 UTC on September 1, the branch had reached block 963,405—1,766 BLAKE2b blocks after activation. That is a meaningful sign of continued mining activity. It is also worth keeping the terminology clear: this is a separate minority branch, not a change to the proof-of-work algorithm used by the established Bitcoin network.
The project has therefore moved beyond a paper proposal and into live operation. RC5 remains a release candidate, while the mining software is still described as public beta. The next milestones are a final software release, easier pool access, practical wallet support and enough exchange liquidity for miners who want to trade what they earn.
What buyers know today
SC5 Pro II hardware
Confirmed
The new model is rated at 14 TH/s and 3,300 W on Blake2B-Sia. Bitark has reserved forward inventory.
Goldshell mining activity
Live-chain results
A Goldshell SC Box session reported 775 accepted shares, no rejected shares and three blocks.
SC5 Pro II setup
Awaiting production-unit test
Bitark will verify the shipping firmware, Knots version, DATUM build and accepted shares together.
Bitcoin Knots software
RC5 available
RC5 kept the existing BLAKE2b chain history and added a checkpoint at block 961,640.
Mining connection
Modified DATUM setup
The current route uses a modified DATUM Gateway to deliver compatible work to Sia-style hardware.
BLAKE2b branch
Live and producing blocks
The public explorer had moved beyond block 963,405 at our September 1 check.
Reservation window
Open before broad release
Early buyers may secure access before launch publicity and fork interest put more pressure on the first batches.
Pools and wallets
Still developing
Access should become easier as final software, pool services and wallet support mature.
Trading market
Early stage
Buyers should not use the established BTC price when estimating possible fork-related revenue.
Goldshell SC5 Pro II 14T at a glance
Swipe or scroll to compare
| Metric | Goldshell SC5 Pro II |
|---|---|
| Rated hashrate | 14 TH/s |
| Rated power | 3,300 W |
| Documented algorithm | Blake2B-Sia |
What still needs to work in practice
The SC5 Pro II is built for Blake2B-Sia, so the algorithm match is straightforward. Connecting it to the BLAKE2b Bitcoin branch involves more than entering a standard Siacoin pool address, however. The miner, Stratum format, version-two block header and modified DATUM Gateway all need to speak the same language.
Results from the SC Box and SC5 Pro are encouraging because they show that Goldshell's Sia-class hardware can receive work on this chain. Once production SC5 Pro II units arrive, the most useful test will pair the shipping firmware with the current Knots and DATUM builds, then record accepted shares, rejected shares and a stable run over time.
Bitark plans to document that setup as reserved units move closer to delivery. Customers will then have a practical configuration reference instead of relying on screenshots or second-hand claims.
How the rollout reached this point
August 15: PR #359 introduced the BLAKE2b proof-of-work design, including support for several ASIC profiles and a version-two block header.
August 21–27: release candidates ran on testnet4. Community tests reported accepted shares or blocks from the Goldshell SC5 Pro and SC Box II, giving miners an early look at how Sia-class hardware could connect.
August 30: RC4 set block 961,640 as the first BLAKE2b block on the branch. The public explorer recorded that block at 06:14:37 UTC, and a Goldshell SC Box later reported 775 accepted shares, no rejects and three verifiable blocks.
September 1: signed RC5 added a checkpoint at block 961,640 and kept the RC4 history intact. By 12:52:53 UTC, the explorer had reached block 963,405. Development was still active, with PR #359 open and the final release yet to arrive.
Should you reserve now or wait?
Reserve before the wider launch if the SC5 Pro II already makes sense for your Blake2B-Sia strategy. Bitark's forward allocation can give early buyers a better place in the delivery queue, and demand may tighten quickly if the final software and production-unit tests go smoothly.
Reserve for the miner first, with the fork as additional upside. The SC5 Pro II remains a 14 TH/s Blake2B-Sia machine even if the new chain needs further software or gateway work. This is the most practical way to evaluate an early order: start with the hardware, your electricity cost and your delivery terms, then treat the new mining opportunity as a bonus.
Wait if you need a fully established pool-and-wallet workflow before buying. You will have more operating data, but you may also face a smaller choice of first-batch units or higher market quotes if interest continues to build. Decide your maximum purchase price in advance rather than chasing inventory after a sudden move.
Before you place a reservation
- Make sure the quote names the Goldshell SC5 Pro II 14T and includes the expected batch, delivery window, deposit and final-payment terms.
- Ask how the reservation is handled if the factory schedule, allocation or final price changes.
- Plan the site for about 3,300 W of continuous rated power, with the correct voltage, circuit, connector and airflow.
- When production units arrive, look for a complete setup record showing the firmware, Knots and DATUM versions, pool configuration, accepted shares and test duration.
- Check which pools or gateways are available to ordinary miners and what support they provide.
- Confirm the chain name, wallet, explorer and withdrawal process before assigning any value to fork-related revenue.
- Base the purchase on the SC5 Pro II's Blake2B-Sia use case and your own electricity cost. Consider any new-chain revenue or resale premium an added opportunity rather than a fixed return.
Bottom line
Reserve early if the SC5 Pro II fits your mining plan
For buyers already planning to add Blake2B-Sia capacity, an early SC5 Pro II reservation is worth considering. Bitark has secured forward inventory, while the live BLAKE2b branch is bringing new attention to the same class of hardware. Reserving now can improve your position for first-batch availability before the official launch reaches the wider market. Confirm the deposit, delivery and power requirements, then size the order around your own operating plan.
Ask Bitark about SC5 Pro II reservationsFrequently asked questions
Is the Goldshell SC5 Pro II 14T a confirmed product?
Yes. The SC5 Pro II is the 14 TH/s Blake2B-Sia successor to the 11 TH/s SC5 Pro. Bitark has reserved forward inventory through its Goldshell supplier relationship, and current hardware listings match the core 14 TH/s and 3,300 W specifications. Contact our team for the latest batch and reservation terms.
Does the SC5 Pro II support Blake2B-Sia?
Yes. Blake2B-Sia is the machine's documented algorithm. Mining the new branch also requires the right Knots, DATUM and pool configuration, which Bitark plans to verify with production hardware.
Why consider reserving before the official retail launch?
A reservation can put you closer to the front of the queue before official launch publicity and fork-driven demand reach the same first batches. Buyers should confirm the deposit, estimated delivery window and price-adjustment terms with Bitark before ordering.
Does the fork mean Bitcoin mainnet changed from SHA-256 to BLAKE2b?
No. The BLAKE2b blocks belong to a separate minority branch. The established Bitcoin network continues to use SHA-256, so the SC5 Pro II should not be described as a miner for ordinary BTC mining.
Why do SC5 Pro test results not prove SC5 Pro II compatibility?
The SC5 Pro and SC Box results are encouraging because they show that Goldshell's Sia-class hardware can connect and submit valid work. Bitark will still test the production SC5 Pro II with its shipping firmware so customers have a model-specific setup reference.
Did the September 1 checkpoint confirm the fork?
It confirmed an important step forward. Signed RC5 kept the chain history from block 961,640, and the branch continued beyond block 963,405 at our check. The next milestones are final software, a production SC5 Pro II test and broader pool, wallet and market support.
Should expected fork revenue be included in SC5 Pro II ROI?
Not yet. Build your purchase estimate around the SC5 Pro II's Blake2B-Sia performance, electricity cost and delivery terms. Until pools, wallets and trading markets are easier to verify, any fork-related income is better treated as potential upside.
Latest updates we are following
August 30 — Bitcoin Knots published RC4, and the public explorer recorded the first BLAKE2b block at height 961,640. Later that morning, the branch had already reached block 961,707.
September 1 — signed RC5 kept the RC4 history and added a checkpoint at the activation block. By 12:52:53 UTC, the explorer had reached block 963,405, or 1,766 BLAKE2b blocks after activation.
Bitark has secured a forward allocation of the Goldshell SC5 Pro II 14T. We are now watching the factory schedule, final commercial terms and the first production-unit connection tests.
A Goldshell SC Box session reported 775 accepted shares, no rejects and three blocks on the live branch. That is a positive result for the Goldshell hardware family; our next useful milestone will be a complete SC5 Pro II setup and run log.
We are also tracking the final Knots release, any changes to the activation rules, easier pool access, wallet support and usable deposits and withdrawals. This page will be updated when those developments materially change the buying decision.
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Sources and research notes
Bitark reviewed the signed RC4 and RC5 releases, the related code changes, public block-explorer records, the modified DATUM repository, community mining reports and current hardware listings. Information about Bitark's forward allocation comes from our supplier relationship. Chain heights and software status reflect the September 1 check, and we have excluded conflicting specifications that could not be confirmed.
- Hardfork: New BLAKE2b proof-of-work algorithm — PR #359 — Bitcoin Knots / GitHub. View source. Accessed . Original language: EN.
- Bitcoin Knots v29.4.1.knots20260508rc4 — Bitcoin Knots / GitHub. View source. Accessed . Original language: EN.
- RC4 mainnet BLAKE2b activation parameters — Bitcoin Knots / GitHub. View source. Accessed . Original language: EN.
- Bitcoin Knots v29.4.1.knots20260508rc5 — Bitcoin Knots / GitHub. View source. Accessed . Original language: EN.
- Bitcoin Knots RC4 to RC5 comparison — Bitcoin Knots / GitHub. View source. Accessed . Original language: EN.
- Mining Bitcoin with DATUM and Knots — BTC-BLAKE2b Project. View source. Accessed . Original language: EN.
- What it takes to mine the BLAKE2b chain — BLAKE2b Miner. View source. Accessed . Original language: EN.
- BLAKE2b rehearsal-chain block 961,640 — mempool.guide. View source. Accessed . Original language: EN.
- BLAKE2b minority-chain block 963,405 — mempool.guide. View source. Accessed . Original language: EN.
- Three blocks on the first night — BLAKE2b Miner. View source. Accessed . Original language: EN.
- Compatibility Report for Goldshell SC5 Pro — PaulsCode community. View source. Accessed . Original language: EN.
- Compatibility Report Goldshell SC Box II — PaulsCode community. View source. Accessed . Original language: EN.
- DATUM Gateway fork with BLAKE2b mining support — innerhat-dev / GitHub. View source. Accessed . Original language: EN.
- Goldshell SC5 Pro II ASIC miner specifications — ASICB. View source. Accessed . Original language: EN.
- Goldshell SC5 Pro II (14Th/s) specifications — ASIC Miner Value. View source. Accessed . Original language: EN.
- SC5 Pro product specifications — Goldshell. View source. Accessed . Original language: EN.
