Specification guide: This article uses current information published by GekkoScience and the live CryptoCloaks product listing. It is not a claim that CryptoCloaks independently measured every hashrate, power, or cooling figure below.

Quick answer: The GekkoAxe GT is a two-chip BM1370 home Bitcoin miner with a stock target around 2.4 TH/s. Its open hardware benefits from a stand that keeps the board stable, leaves the display and stock cooler visible, and provides a clean place for an optional rear fan.

See the CryptoCloaks GekkoAxe GT case and stand →

What is the GekkoAxe GT?

The GekkoScience GekkoAxe GT is a compact SHA-256 Bitcoin miner built around two Bitmain BM1370 ASIC chips. GekkoScience describes stock performance around 2.4 TH/s, with higher settings possible when power delivery and cooling allow. It uses Wi-Fi, an onboard display, AxeOS-compatible controls, a standard DC barrel jack, and separate front and rear fan ports.

The board is mechanically based on the Bitaxe Gamma Turbo layout, but it is a GekkoScience design with its own board and cooling setup. That distinction matters when buying a case. Similar-looking boards are not automatically identical once mounting points, cooler clearances, cables, and fan positions enter the picture.

Official GekkoAxe GT specifications that matter for a case

ASICs	2 × Bitmain BM1370
Published stock target	About 2.4 TH/s
Published tuned target	About 3.5 TH/s with stock cooler and optional rear fan
Published theoretical maximum	About 4.5 TH/s if cooling and power allow
Cooling connections	Front and rear fan ports with software speed control
Power input	12 V DC through a 5.5/2.1 mm barrel jack
Interface	Wi-Fi setup, AxeOS-compatible web controls, onboard OLED
Accessory connection	Backward-compatible Bitaxe Accessory Port with regulated 5 V output

Those are published targets, not guaranteed results for every unit. Higher clocks add heat and power demand. Tune around the actual temperature, stability, fan, and power behavior of your miner rather than treating the theoretical ceiling as a default setting.

Why use a case and stand?

A bare desktop miner works, but it leaves the board resting wherever you put it. A purpose-built open-frame case gives the GekkoAxe GT a defined position while keeping the important hardware exposed:

• The OLED remains easy to see.
• The stock front heatsink and fan stay unobstructed.
• The board sits at a consistent angle instead of lying flat.
• Cables have a predictable path away from the desk surface.
• An optional rear fan has a dedicated mounting position.

This is not a sealed dustproof enclosure. The point is to hold and display the miner without boxing in the cooling hardware.

Does the GekkoAxe GT need a rear fan?

Not every stock setup needs extra cooling. GekkoScience includes a custom front fan and heatsink combination and provides software-controlled front and rear fan ports. The rear position becomes more useful when ambient temperatures are high, the miner runs for long periods in a warm room, or you are deliberately testing higher settings.

GekkoScience specifically ties its approximate 3.5 TH/s overclock figure to the stock cooler with an optional rear fan. That does not mean a fan guarantees that result. Silicon variation, room temperature, heatsink contact, fan performance, voltage, and power-supply headroom all matter.

What size rear fan fits the CryptoCloaks stand?

The CryptoCloaks GekkoAxe GT stand provides a rear mounting position for a 60 mm fan. The fan and any adapter needed by your particular cable or connector are separate from the case-and-stand listing.

If you are adding a rear fan, verify the fan voltage, connector, pinout, cable reach, and airflow direction before powering it from the miner. A plug that physically fits does not automatically prove the electrical pinout is correct.

GekkoAxe GT case compatibility

The CryptoCloaks listing is made for the GekkoScience GekkoAxe GT 2xBM1370 miner. It should not be treated as a universal case for every Bitaxe, GekkoAxe, NerdQaxe, or other open-source desktop miner.

GekkoScience lists a CryptoCloaks stand as an add-on on the official GekkoAxe GT product page. CryptoCloaks offers the case and stand directly with separate case and stand color choices, an optional custom top label, and the rear 60 mm fan mounting position.

First setup checklist

1. Confirm the board is a GekkoScience GekkoAxe GT before ordering the case.
2. Inspect the miner, heatsink, fan, display, and power connector before assembly.
3. Seat the miner in the case and stand without forcing the board or pinching a cable.
4. Make sure the stock front fan has clear intake and exhaust space.
5. If using a rear fan, verify its electrical requirements and airflow direction.
6. Use appropriate 12 V power for the operating profile you intend to run.
7. Connect through Wi-Fi, configure AxeOS and your Bitcoin mining pool, then watch temperature and stability before increasing settings.

Choosing colors and a custom label

The case color and stand color are separate choices. A matched pair keeps the setup simple; contrasting colors make the frame and angled base more visible. An optional custom top label can add words or a logo for $10.

The product photos show the miner and cooling hardware installed so you can see the fit. The CryptoCloaks listing includes the case frame and stand only. The GekkoAxe GT, fans, adapters, power supply, cables, and electronics are not included.

Build the setup around your actual miner.

Choose your GekkoAxe GT case and stand colors →

GekkoAxe GT setup FAQ

Is the GekkoAxe GT included with the CryptoCloaks case?

No. The product listing is for the CryptoCloaks case frame and angled stand. The miner and electronics are separate.

What is the stock hashrate?

GekkoScience publishes a stock speed around 2.4 TH/s. Actual results vary by unit, firmware, temperature, power, and settings.

Can the GekkoAxe GT run faster than 2.4 TH/s?

GekkoScience publishes approximately 3.5 TH/s with the stock cooler and an optional rear fan, plus a theoretical maximum near 4.5 TH/s if cooling and power allow. Those are not guaranteed everyday results.

What fan size fits the rear of the CryptoCloaks stand?

The stand has a rear mounting position for a 60 mm fan. The fan and adapter are not included.

Does the GekkoAxe GT use AxeOS?

GekkoScience says the hardware was designed and tested for AxeOS compatibility through version 2.12.0. Check the current GekkoScience documentation and repository before making firmware changes.

Sources

• GekkoScience: GekkoAxe GT 2xBM1370 Solo Miner
• GekkoScience GekkoAxe source repository
• CryptoCloaks: GekkoAxe GT Case & Stand

The post GekkoAxe GT Setup, Cooling & Case Guide (2xBM1370) appeared first on CryptoCloaks.

Updated August 28, 2026. The Hammer Miner Thor P2 is a dual-BM1373 home Bitcoin miner rated for up to 10 TH/s. It sits between small single-chip lottery miners and larger desktop ASICs, with three practical power levels, Ethernet and WiFi, a color display, a substantial tower cooler, and a 240W power supply in the box.

Buy the Hammer Miner Thor P2 for $449

Hammer Miner Thor P2 specifications at a glance

What two BM1373 chips change

The P2 is not simply a larger version of a low-cost single-chip miner. Its two BM1373 chips let it reach a different operating range while still using a standard household outlet and a desktop-scale cooler. That matters because hashrate determines how many valid hashing attempts the device makes, while efficiency and wall power determine how much electricity and heat accompany those attempts.

One chip family does not guarantee one efficiency number. Chip count, silicon variation, voltage, frequency, board losses, controller overhead, fan power, power-supply efficiency, and firmware all influence the result. That is why a BM1373 label alone cannot tell you whether the complete miner will use 120W, 157W, or 162W at a particular hashrate. Complete-system measurements are more useful for electricity planning.

The dual-chip design also changes the buying comparison. The single-chip Thor X1 is easier to place where every watt matters, while the P2 trades more power and a larger cooler for substantially more maximum hashrate. The BC04 review covers a lower-cost 6 TH/s alternative built around four BM1370 chips. The P2 is aimed at someone who specifically wants the newer chip platform and a middle ground near 10 TH/s.

BM1373 is also why firmware maturity deserves attention. Newer hardware can bring improved silicon efficiency, but the control software must still manage startup, networking, thermal behavior, voltage, frequency, pool communication, and recovery. The P2’s first public firmware update arrived quickly, which shows active support but also confirms that buyers are entering a young product cycle.

Why the Thor P2 power numbers look inconsistent

This is the most important issue to clear up before comparing the Thor P2 with another miner. Different published numbers describe different measurement points, firmware versions, and settings.

The difference between chip power and wall power is not automatically dishonesty. The outlet also feeds the controller, display, fan, lighting, conversion losses, and power-supply overhead. Firmware and voltage settings can move the final result too. The mistake is comparing a chip-level number for one miner with a wall number for another as though they are equivalent.

Thor P2 electricity cost by mode

The estimates below assume continuous operation for 30 days at $0.15 per kWh. They include no pool fees, downtime, demand charges, or changing electricity rates. These are operating-cost calculations, not revenue forecasts.

Power consumed by a miner eventually becomes heat in the room. These settings represent roughly 171 to 205 BTU/h in Low Power, 300 BTU/h in Normal, and 536 to 553 BTU/h at the high end. That is manageable compared with an industrial ASIC, but it still matters in a small enclosed room.

What independent footage actually showed

The Hobbyist Miner published a 14-minute Thor P2 unboxing and setup video on August 25, 2026. The unit was supplied by another retailer, so it is not an anonymous laboratory test, but the footage provides useful observations beyond a specification sheet:

• The dashboard reached approximately 10.1 TH/s early in the run and showed the BM1373 chip model.
• The reviewer configured Ethernet with DHCP and pointed the miner at a locally hosted Bitcoin node and solo pool.
• Thor OS exposed pool, network, fan, ARGB, firmware update, Normal, Overclock, and Custom controls.
• The outlet meter showed approximately 162W near the 10 TH/s setting.
• The reviewer said the included power supply was more audible than the large front fan.
• A small cable clip arrived broken despite substantial protective packaging. It did not stop operation, but it is a useful reminder that 3D-printed details can be damaged in transit.

Video credit: The Hobbyist Miner. CryptoCloaks did not conduct this test and does not represent the measurements as its own.

Cooling and noise: why the 120mm design matters

Hammer Miner has stated that a P2 ran continuously through 24-hour-plus cold and hot chamber tests at 0°C and 35°C without changes in hashrate or efficiency. That is manufacturer testing, not independent validation, but the physical cooling design gives the claim a plausible engineering basis. Keep both sides of the heatsink open and do not bury the miner in a cabinet.

Thor OS dashboard, setup, and firmware

Thor OS is Hammer Miner’s current firmware platform for the Thor X1, Thor P2, and BC08. The official description emphasizes performance, thermal control, and over-the-air updates. The web interface is one of the P2’s strongest practical advantages because a home miner should not require a separate flashing project before it can hash.

Basic Thor P2 setup sequence

1. Place the miner where the 120mm fan and rear of the heatsink have clear airflow.
2. Connect the included 240W supply to the miner’s XT60 input, then connect AC power.
3. Use Ethernet for the most predictable first setup, or configure the supported 2.4GHz WiFi connection.
4. Find the miner’s IP address through the display, router, or network-discovery method described in the current guide.
5. Open Thor OS in a browser and enter your pool URL, worker or payout information, and fallback pool if desired.
6. Start with Normal mode. Confirm accepted shares, temperature, fan operation, and stable power before changing settings.
7. Check for an official OTA update before leaving the miner unattended for extended operation.

A wired network is not mandatory, but it removes one variable. If the miner is far from your router, a standard Cat 6 Ethernet cable is an inexpensive addition and is not listed as included with the P2.

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.

Current firmware history matters

The official HammerMiner/P2 GitHub repository shows two public releases at the time of writing:

• V1.0.0 dated August 7, 2026: first production-candidate version.
• V1.0.1 dated August 18, 2026: release notes say it resolves occasional restarts. Hammer Miner’s announcement also identifies intermittent network anomalies and memory-exhaustion restarts.

This is not a reason to dismiss the hardware, but it is evidence that the platform is new. Update before troubleshooting an early firmware build. Buyers who require years of field history should wait for more long-duration reports.

How to verify a new Thor P2 during the first 24 hours

A first-day check should focus on stability, not immediately chasing the highest possible hashrate. Start with a known-good outlet, clear airflow, Ethernet if available, current firmware, and the Normal profile. Record the firmware version and default settings before changing anything.

1. Confirm accepted shares: a dashboard hashrate without accepted pool-side work is not enough. Verify that the pool recognizes the worker and that rejected shares are not unusually high.
2. Compare short and long windows: hashrate fluctuates. Review the miner dashboard and pool-side average over several hours instead of judging a one-minute peak.
3. Watch each chip: confirm that both BM1373 chips report and remain active. A total hashrate far below the selected profile can indicate that one chip, a setting, or the network path needs attention.
4. Check temperature trend: the absolute number matters less than whether temperature stabilizes. A continued climb suggests blocked airflow, excessive ambient heat, an aggressive setting, or a fan-control problem.
5. Measure at the outlet: a plug-in watt meter distinguishes wall draw from dashboard estimates. Compare the result with the broad ranges in this article, not one supposedly universal number.
6. Test recovery: after the miner has been stable, document its IP address and configuration. Confirm that it reconnects to the network and resumes hashing after a controlled restart.
7. Inspect the physical assembly: check the stand, cable clips, fan leads, heatsink clearance, XT60 connector, display, and PSU before leaving the machine unattended.

Only after that baseline is stable should you compare Low Power, Normal, and Overclock behavior. Change one setting at a time and keep notes. If a later firmware update changes power or hashrate, a baseline gives you evidence rather than a vague impression that the miner feels different.

If your goal is quiet home operation, evaluate sound where the device will actually live. A phone app is not a calibrated sound meter, but repeated readings from the same location can still compare profiles. Listen separately for fan airflow, fan bearing noise, electrical noise, and the PSU. A single published dB value cannot describe all four.

Pool mining or solo mining?

The P2 can be pointed at a conventional pool, a solo pool, or a compatible local setup. The reviewer footage demonstrates mining to a locally hosted Bitcoin node and pool. That does not make the block odds favorable or predictable. Network hashrate and difficulty change continuously, so static “one in X years” claims age quickly.

Why 10 TH/s still does not guarantee mining profit

Ten terahashes per second sounds large beside a one-chip desktop miner, but it remains a very small fraction of the Bitcoin network. Pool revenue changes with network difficulty, transaction fees, pool accounting, uptime, and Bitcoin’s market price. Solo outcomes are even less predictable because the miner either finds a valid block or it does not.

The correct financial comparison starts with controllable costs. Use your actual electricity rate, measured wall power, expected uptime, and any pool fees. Then model revenue separately with current network data. Do not compare today’s revenue estimate with a fixed electricity number and assume the spread will continue indefinitely.

Heat can also have value or cost depending on the season. At maximum operation, the P2 releases roughly the same heat into the room as a 157 to 162W electric load. That can offset a small amount of heating in winter and increase air-conditioning demand in summer. It does not create free energy.

For a deeper explanation of solo variance, payout expectations, and changing network conditions, read our home Bitcoin solo-mining reality check. The hashrate is different, but the underlying probability lesson is the same.

Thor P2 vs Thor X1, BC04, BC08, and KBox

The table uses current CryptoCloaks prices and advertised maximum hashrates as of August 28, 2026. Price per TH is useful for shopping, but it ignores efficiency, noise, included power hardware, firmware, warranty, and tuning behavior.

What the Thor P2 does better

• More maximum hashrate than the Thor X1 and BC04.
• Lower published maximum wall draw than the BC08 and KBox.
• Ethernet plus WiFi, instead of WiFi-only networking on some compact miners.
• Included 240W power supply with headroom for the published overclock profile.
• Large, slow-fan cooling rather than a tiny high-RPM fan.

What the Thor P2 does not win

• It does not have the lowest purchase price.
• It does not have the lowest current price per advertised TH.
• It does not have the highest hashrate.
• It does not yet have years of public firmware and reliability history.
• Maximum hashrate is not its most efficient operating point.

That is why Normal mode may be the P2’s best everyday argument. It gives more hashrate than the BC04 at a published 88W wall draw while retaining the newer chip platform, Ethernet, display, and larger cooler.

What comes with the Thor P2?

• Hammer Miner Thor P2 assembled on its ABS stand
• Dual-BM1373 hashing hardware
• 120mm ARGB fan and tower cooling system
• LilyGO T-Display S3 controller/display
• 240W AC-to-12V power supply with XT60 output
• Two listed AC cables, US and EU

A network cable is not listed as included. Bitcoin node hardware is not required for normal pool operation. Running your own node and compatible pool is an optional sovereignty-focused setup, not a prerequisite for turning the miner on.

Who should buy the Thor P2?

Hammer Miner Thor P2 review verdict

The Thor P2 occupies a useful middle position in the home-mining market. It is materially more capable than a single-chip desktop miner, but its maximum wall draw remains far below a full industrial ASIC. The cooling, Ethernet connection, display, included PSU, and Thor OS interface make it easier to treat as an appliance rather than a loose development board.

The best published case for the P2 is not simply “10 TH/s.” It is the ability to choose between roughly 4.8 TH/s at 50 to 60W, 6.8 TH/s at 88W, and 10 TH/s around 157 to 162W. The normal setting looks like the practical center. The main reason to remain cautious is software maturity: firmware V1.0.1 already addressed network and restart problems, and long-term independent reports are still limited.

For buyers who accept those tradeoffs, the Thor P2 is one of the more complete 10 TH/s home Bitcoin mining packages currently available.

Get the Hammer Miner Thor P2 Compare home Bitcoin miners

Hammer Miner Thor P2 FAQ

Sources and further reading

• Hammer Miner official Thor P2 page
• Official HammerMiner/P2 firmware releases
• Hammer Miner THOR OS announcement
• Hammer Miner P2 V1.0.1 announcement
• Hammer Miner temperature-test statement
• Published wall-power and noise test announcement
• The Hobbyist Miner Thor P2 hands-on video

The post Hammer Miner Thor P2 Review: 10 TH/s Home Bitcoin Miner appeared first on CryptoCloaks.

CryptoCloaks · The Lab · Guest field note

The DIY signing-device revolution is just beginning.

Many projects. One shared Bitcoin library. One room in São Paulo—and a new phase for open-source self-custody.

SeedSignerKruxSpecter DIYEmbit

// CryptoCloaks editor’s note

DIY Bitcoin signing devices just entered a new phase.

Separate open-source projects are becoming one deeper technical alliance. SeedSigner lead developer Keith Mukai reports from the first in-person summit bringing together SeedSigner, Krux, Specter DIY, Satochip, Jade DIY, and the shared embit library.

CryptoCloaks is republishing Mukai’s article in full under CC BY-ND 4.0. The article body below is his work and has not been rewritten. We only reformatted it for the Lab and omitted two third-party screenshots, as the author’s republishing terms allow.

6Open-source teams

4 daysBuilding together

1 libraryShared embit core

12–18 mo.Critical next phase

// Choose your SeedSigner build

Case only or case and electronics?

If you already have the standard SeedSigner hardware and only need the enclosure, choose the $9.99 Orange Surf SeedSigner case. It does not include the Pi, display, camera, microSD card, or software.

If you want the upgraded metal case, 2.8-inch display/control hardware, camera, microSD extension cable, and connection parts, choose the $150 SeedSigner+ case and electronics kit. You still supply the compatible Raspberry Pi Zero and microSD card.

Many projects, one team

Since we all have trash attention spans now, I’ll put the key part right here:

The Specter DIY, SeedSigner, and Krux teams (plus Satochip & Jade DIY experts, self-custody educators) gathered in São Paulo, Brazil to meet for the first time, learn from each other, and launch much deeper collaborations going forward. We will be sprinting ahead together like never before. The future of bitcoin self-custody via DIY signing devices is incredibly bright. We’re going to conquer the world.

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Why bring these teams together?

All three projects rely on the same “embit” library for our bitcoin operations, created by Stepan Snigirev. So while our projects are very different, we’ve always considered each other siblings due to our shared core library.

But a few years ago Stepan went through a brutal six month dev sprint. Feeling totally fried as a result, he walked away from bitcoin dev. Many of us were worried that we’d never see him again.

If you don’t know Stepan, you can’t understand what a loss this was. His technical mind is exceptional, of course. But it was his patience and kindness that guided me to start contributing to open-source projects in late 2019.

Over the ensuing years, embit held up extremely well and only needed occasional minor updates. But for the most part, Stepan was gone.

So imagine our collective thrill upon learning that Stepan said YES to the Brazil summit!

Stepan’s top priority in attending was to give shared custody of embit to its new stakeholders. He didn’t want to be a bottleneck to our collective progress. He also, understandably, wanted to free himself of most of the oversight burden.

A representative each from Specter DIY, SeedSigner, and Krux were nominated to become co-maintainers of the embit github repository. This handoff was a huge, symbolic milestone. A significant passing of the torch. Stepan’s pioneering efforts paved the way for our projects to exist and flourish. And there we were, each team stepping forward to pick up the mantle.

By the way, what has Stepan been focusing on since stepping away from bitcoin? His first love: he’s literally building quantum computers (yes, I asked, he said bitcoin is probably safe for the next 20-35 years).

Sibling Rivalry?

Humans are so dumb. We can be so needlessly petty or jealous or selfish.

So you could imagine that these three DIY projects might have some awkward, conflicting feelings about one another. We exist as a niche within a niche and a scarcity mindset would say that there’s only so much oxygen to go around. In a zero-sum world, if one gains some success, it takes away from the others.

Specter DIY launched the whole idea, but it was SeedSigner that built up the strongest twitter energy and podcaster attention.

Krux has seen support from parts of the bitcoin ecosystem that have rejected SeedSigner.

SeedSigner has (stubbornly?) rejected features that the others have embraced.

So, sure, let’s gather all these teams together and see what happens!

Now, of course, there’s some exaggeration here. As far as I’d seen, each project had been careful to be respectful of the others. But still, you just don’t know what the vibe is going to be until we’re all actually face-to-face.

It turns out: the vibes were incredible.

We weren’t quite sure who was going to run the show, but Stepan took the lead. We kicked off the first day planning how we’ll all work together on embit’s future. That set the tone. We were all very well aligned in how we thought it best to steward the library. No one worried if they had enough influence. There was no jockeying. No politicking. No stupid human stuff whatsoever.

Instead there was shared praise for each of the projects’ nominees to co-maintain embit. Each person brought forth was a powerhouse. Embit is in very, very good hands.

Then over the course of the four day summit and lots of shared lunches, dinners, morning coffee runs, Uber rides, and exploring São Paulo together, we saw that even us weirdo nerds can bond and build friendships like normal human beings.

But Wait, There Were More!

Aside from the three DIY teams, we had CryptoGuide join us who has built the most successful fork of SeedSigner thus far. His fork brings Satochip smartcard functionality to SeedSigner. He even developed his own custom add-on board to read the cards.

Lots of people struggle with the fact that SeedSigner doesn’t have a secure element. The Satochip smartcard is itself a secure element, but it has no screen for a user to interact with. Bringing Satochip together with SeedSigner is seen by many as a perfect marriage. Though note that even here Specter DIY is the true pioneer as it has had optional smartcard support for a number of years.

We also had Lawrence Nahum, former CTO of Blockstream, who shared his deep expertise on the tech behind the Blockstream Jade. By the way, despite being a retail product, the Jade has a natural fit with the summit because you can build a DIY Jade!

A number of educators, self-custody advocates, and more technical experts (miniscript!) rounded out the group to share their insights.

I realized later that the four core members of the SeedSigner team were the only Americans. The Krux team is primarily Brazilians while the Specter DIY founders are Russian expats. That probably has a lot to do with why the different projects have been imbued with such different core philosophies. The other attendees came from Canada, Germany, Italy, Switzerland. We also had a super privacy-conscious anon dev who participated remotely from, well, literally no one even knows.

Giving vs Taking

Since all of our projects are FOSS — Free and Open-Source Software — any innovation from one project can be lifted and brought into another. No permission needed. No licensing. We can all copy and paste to our hearts’ content.

But prior to this Brazil summit and because I’m a stupid flawed human, I would have felt some hesitation to copy code from one of the other projects. A big, really stupid part of that is just ego. And also a bit of laziness; it does take effort to dive into a new codebase to understand how things work. Again, bit of an exaggeration here, but it’s not a nothing. And “akshually…” SeedSigner already has a python file copied from Krux.

As the summit moved to various presentations by members of each team, the overriding tone was: “Here’s something cool. I’d love for you to use it. And I’m happy to help.”

That was an enormous unlock for me. Partially because what the other teams have to offer is of course incredible, but at a personal level it makes those previously unsure vibes now so clear. Their innovation is being offered to all of us. They are rightfully proud of their work but it’s not about ego wins or bragging rights, it’s that all of our projects can be strengthened by leveraging each others’ successes.

This is “Well, duh, FOSS Teamwork 101” level stuff, but sometimes you just need to be smacked across the head for things to fully sink in.

But enough fluffy vague talk, let’s see some quick specifics.

Cherry-Pick the Best

Specter DIY, the OG, is built by the meticulous masters. Mike Tolkachev presented in detail how their secure bootloader works. Having that in place means that their STM32-based hardware will reject any “evil” firmware that a user might have been tricked into trying to install. This is perhaps the most important security guarantee a signing device can offer.

A big focus for me has been to port SeedSigner off the Pi Zero to a microcontroller. Krux Lead Maintainer odudex is working to port them off of their K210 microcontroller. But neither of us are likely to target the STM32. Thankfully, Mike built in the flexibility for his bootloader to be ported to other microcontrollers. So Krux and SeedSigner seem likely to end up working together to secure our future microcontroller environment (yep, a future SeedSigner with a secure bootloader; FU fudsters! ).

SeedSigner are the UX champions. Our volunteer UX designer, easyuxd, presented his approach to developing SeedSigner’s UX, which I think is easily the best in the entire signing device space, including all of the expensive retail hardware wallets. His talk has already inspired Krux contributor tadeubas to try out some new UX enhancements to Krux. No one wants all the projects to just start looking like SeedSigner. It’s more that easyuxd’s design principles can be applied within existing frameworks, meeting them where they’re at, but still pushing them to improve.

Krux are the advanced nerds. Krux contributor jdlcdl created a marvelously cool encrypted multisig challenge that required summit attendees to use the most advanced features that are unique to Krux to unlock separate pieces of a puzzle in order to cosign a shared transaction. It was a demonstration of a wildly ambitious inheritance protocol. Definitely not normie friendly nor ready for real-world use yet, but did show off just how powerful a tool Krux can be when put in the hands of a mad genius.

CryptoGuide’s smartcard fork is a developer’s dream. CryptoGuide has enhanced his version of SeedSigner with so many dev-friendly conveniences and incredibly powerful automations to support testing. I can’t wait to get those improvements into the main SeedSigner codebase.

And beyond: Odudex’s work on a new experimental project coded in C (Kern) will likely have a ton of utility for my SeedSigner port. For example, Kern’s QR scanning functionality could end up being dropped right into the next gen SeedSigner code as a utility module. This would incentivize the SeedSigner team in turn to review and contribute improvements back to Odudex’s code.

The Next Phase

Now we return to what we all do best: BUILD. But we’re no longer doing it alone. Each project team has essentially tripled in talent. And our collective expertise rivals or maybe even exceeds what a for-profit company could hope to assemble. In exactly the areas where I’m weak, the others will be providing their considerable strengths.

The next 12-18 months feels like an important, exciting transition period for the bitcoin signing device space.

I think we’ll see a common architectural core emerge. Rather than just sharing the embit library, there might be a shared operating system of sorts (wrong term for microcontrollers, but you get the idea). The projects would still differ on UX, features, and overall philosophy. But we don’t need three different QR decoding implementations. Instead we’ll collectively make the BEST QR decoding implementation.

We’ll have a completely FOSS platform to build on. And, of course, any number of other new builders can join the party, leverage our existing work to bootstrap their projects, and bring their own new innovation to the space.

That’s not to say that any of this will be easy. But the giant leap forward here is that it’s now possible.

Wrapup

In the BB (Before Brazil) era, the space has been dominated by retail hardware wallet companies fighting each other, paying for the splashiest conference sponsorships, bribing all the podcasters for ad reads. All to get you to spend lots of money.

Now in the AB era, I think we’re poised to see an incredible flourishing of build-it-yourself project offerings and maturity. In the AB era there will still be no shortage of expensive retail options. But why would you buy one of those when much cheaper, fully self-sovereign DIY options exist? Especially when those DIY options will offer a better user experience and better features. And the DIY options will have nearly zero compromises vs what retail companies can offer.

Change is coming.

Credit to Lucas, Vinteum, and HRF

Lucas Ferreira, Executive Director at Vinteum (a Brazilian nonprofit focused on training and funding bitcoin devs in Latin America), was the driving force that made this happen. It was his idea (which sounded absurd to me at first!). He got the buy-in from all the teams, including the crucial “get” of convincing Stepan to join.

Lucas and Vinteum organized the entire retreat: travel coordination, lodging, the agenda, and even brought in caterers to cook traditional Brazilian cuisine. They secured funding from the Human Rights Foundation to make it all financially viable. And they already had the location: Vinteum’s Casa 21 hacker house in São Paulo.

Masterstroke, sir. Well done.

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Bonus Info

Congrats on your excellent attention span and desire to learn more! I did my best to keep the above brief so I had to cut out a lot of details. If you want to dig a little deeper, read on:

Buzzword Soup

First, let’s cover some core terms:

• FOSS: Free and Open-Source Software. The source code (and any custom hardware designs) are freely available for anyone to review and build off of. No permissions needed. No licensing agreements. A public resource.
• DIY: Do-It-Yourself. Take off-the-shelf parts and build your own device without anyone needing to know what you’re building. In many cases there isn’t even anything to build; just buy a supported general purpose device from a retailer and flash the FOSS code to it.
• Signing Device: A tool that performs bitcoin math. Create keys, set up new wallets, sign transactions. Retail hardware wallets are signing devices. The main distinction is that the FOSS projects discussed here generally do not store your private key on the device itself.

Why DIY Signing Devices?

Why not just buy a retail product from an established brand?

“The [retail] hardware wallet market pushes you toward convenience, mobile apps, Bluetooth connectivity, and “easy” recovery services. These features are marketed as improvements, but they’re actually tradeoffs. Every convenience is an attack surface.” —@GoBrrr_me

Privacy: History has shown: Buy a bitcoin/crypto device from a retail company, your personal information ends up getting leaked. Enjoy the “support” calls and emails from scammers. Even worse, if your shipping address is leaked: “Knock, knock!” “Who’s there?” “Kidnappers.”

Access: It’s easy to buy whatever retail device we want in the U.S. But in many places it’s either impossible to buy one or just too dangerous to risk any of the above. And most retail devices cater to the West, with limited language support for the rest of the world. “Bitcoin is for everyone… if you speak one of these 7 languages.”

Who’s really in control?: Retail devices can be designed to trap you within their corporate ecosystem by requiring you (or making you think it’s required) to use their proprietary wallet software that can snoop on your bitcoin balance, transactions, and IP address. From there they can lock you out of features, require registration or KYC, force you into firmware updates, or sunset your device when they no longer wish to support it. Their priority is to keep selling you more devices.

Cost: Some affordable retail options exist. But for-profit companies need to charge a premium for their niche products. A $200+ hardware wallet might totally be worth it (), but the majority of the world needs low-cost options.

Minimize supply chain attacks and fakes: Using off-the-shelf components means that the manufacturer, retailer, and the rest of the logistics chain have no idea what you’re building. You’re hiding amongst a giant crowd of people who are using the same devices to build robots for high school STEM classes, wifi backyard moisture sensors for gardens, etc. But if you order a retail hardware wallet from some Company X, everyone knows exactly what that device will be used for, including attackers who might try to send you a modified fake or one pre-loaded with the attacker’s key.

Self-sovereign fun: Building your own signing device is empowering. And if you have the skills or the ambition to learn, being able to change the device’s code however you see fit is maximum freedom. Tinkerers gonna tinker.

Best in class(?!): The normie brain cannot comprehend that a zero-profit FOSS project built by volunteers might actually be better in many ways than a premium retail device. When there’s no profit motive, our entire focus can just be on what’s best for the user. And many innovations have come from the DIY space that are now being adopted by the retail companies. I’m biased, but we’re crushing it, y’all.

The FOSS DIY Signing Device All-Stars

Specter DIY: The OG

github.com/cryptoadvance/specter-diy

The Specter team really launched the DIY signing device movement in 2019, led by Stepan Snigirev. From the beginning they insisted on doing everything FOSS, which was unusual at the time since they were actually a for-profit company (later acquired by Swan, then subsequently gifted back to the FOSS world as an independent project once again).

Specter DIY is built from a premium off-the-shelf dev board that features a touchscreen on par with an iPhone 4. It pioneered the use of QR codes for fully air-gapped communication (i.e. there’s no physical usb nor wifi/bluetooth connection to an internet-connected device). It also pioneered the concept of “stateless” operation where you load your private key into the device, perform whatever operations you need, and then the device permanently wipes the key from its memory. The signing device just becomes a flexible tool, totally separate from how and where you secure your secrets.

But a signing device can’t do anything on its own; you need coordinator software to talk to the bitcoin network. This was provided by their accompanying Specter Desktop software wallet, which was the first wallet to implement QR-only communication. The Specter ecosystem was groundbreaking in how easy it made it for users to roll their own multisig with any combination of DIY or retail devices.

And from the start, Stepan isolated the core bitcoin functions in the reusable embit library. His foresight laid the grounds for the DIY signing device space to bloom.

SeedSigner: The UX Champion

seedsigner.com

The pseudonymous SeedSigner creator (SeSi “the man”) leveraged the embit library and, with a ton of help from Stepan himself, built a basic proof of concept on a $5 Raspberry Pi Zero board in December 2020. From there the project attracted new contributors and rapidly gained a ton of new features, some of which were industry firsts that are now being incorporated into more devices (option to generate a new key via camera data, the SeedQR open standard, UX to transcribe QRs by hand).

I readily confess that we are the least technically savvy of the DIY projects, but as a consequence we have focused on making the SeedSigner UX as beginner-friendly as possible.

And of all the DIY projects, SeedSigner has had by far the most successful twitter and podcaster game. It’s a strange thing to point out, but hype and eyeballs are invaluable to a volunteer-based project that has zero interest in revenue and no marketing budget.

Krux: The Advanced Nerds

selfcustody.github.io/krux/

Krux leverages a robust existing ecosystem for the K210 microprocessor. There are a number of K210 devices of varying sizes and features that can all run the Krux firmware. None of them require any assembly; these devices are sold with screens, cameras, and buttons in a ready-to-use enclosure.

The project was launched in 2021 but the creator handed over the project to other contributors so he could, in Satoshi-like fashion, recede and disappear altogether.

Krux is also built around the embit library and has recently been the leading force behind upgrading that shared library with newer, more advanced features.

---

Keith Mukai is the volunteer Lead Developer of SeedSigner, recent Krux contributor, OG Specter Desktop contributor, and early Specter DIY builder. He is unabashedly proud of his two ridiculously tiny PRs to Bitcoin Core. His FOSS work is supported by maxing out fiat loans plus grants from the HRF.

Originally published at github.com/kdmukai/article-diy-signing-device-summit. Free for anyone to republish, no permission needed.

// Source and license

Build in the open.

“The DIY Signing Device Revolution is Just Beginning” is by Keith Mukai and was originally published in the source repository. Republished under CC BY-ND 4.0 and the author’s stated republishing terms.

Build a SeedSigner+ →Back to The Lab

The post The DIY Signing Device Revolution is Just Beginning appeared first on CryptoCloaks.

CryptoCloaks · The Lab · Updated August 20, 2026

Which Home Bitcoin Miner Actually Fits Your Life?

Four current miners. Four completely different power, heat, and hashrate profiles. Here is the honest way to choose.

$235–$1,3456–90 TH/s110–1,674WCurrent buyer guide

// The verdict

There is no universal “best” miner.

Buy the BC04 for easy entry, the Dual Cooler for a clean two-miner rig, the Mini 3 for middle-ground heat, or the Avalon Q for maximum home hashrate.

4Current systems

6–90TH/s range

110WLowest draw

3Q power modes

// Pick your lane

Start with the room—not the hashrate.

A miner is also a continuous electrical load and a heater. The right machine is the one your budget, circuit, room, and ventilation can support every day.

Best easy entry

Hammer Miner BC04

$235

6 TH/sHashrate

110WPower

DesktopFit

A real SHA-256 ASIC that fits a normal desk. Wi-Fi, Ethernet, OLED screen, PSU, cable, and manufacturer stand included.

View BC04 →

Best clean dual rig

Nano 3S Dual Cooler

$525

12 TH/sTotal

280WPower

2 minersSystem

Two Nano 3S miners inside a purpose-built CryptoCloaks enclosure with dual fans, speed control, hardware, and exhaust shroud.

View Dual Cooler →

Only need one miner? The Canaan Avalon Nano 3S is also available on its own: 6 TH/s at 140W, with the power supply included. Check the product page for current pricing and color options.

Best middle ground

Avalon Mini 3

$785

37.5 TH/sHashrate

800WPower

HeaterRole

Substantially more hashrate than a desktop miner, with enough heat to matter in an office, bedroom, garage, or workshop.

View Mini 3 →

Most home hashrate

Avalon Q

$1,345

90 TH/sMaximum

1,674WMaximum

3 modesControl

54, 72, or 90 TH/s modes for a planned home installation. Every new CryptoCloaks Q includes one exact-fit 6-inch or 8-inch exhaust shroud.

View Avalon Q →

// Side by side

The numbers at a glance.

Miner	Current price	Hashrate	Approx. power	Best fit
Hammer BC04	$235	About 6 TH/s	About 110W	Quiet desktop entry
Nano 3S Dual Cooler	$525	12 TH/s total	About 280W total	Organized two-miner setup
Avalon Mini 3	$785	37.5 TH/s	About 800W	Middle-ground mining heater
Avalon Q	$1,345	54 / 72 / 90 TH/s	800 / 1,300 / 1,674W	Maximum home hashrate

Prices verified August 20, 2026 and can change. Hashrate and power are approximate; actual operation varies with settings, firmware, ambient conditions, and individual units.

// Decision map

Choose by constraint.

Smallest commitment

BC04. Lowest price, lowest power, easiest room fit.

Clean dual setup

Dual Cooler. Two miners and managed airflow in one system.

Useful room heat

Mini 3. The middle step before maximum-power home mining.

Maximum home hash

Avalon Q. Plan the circuit and exhaust before ordering.

// The part spec sheets bury

Nearly every watt becomes heat.

A 110W miner and a 1,674W miner create completely different living-space problems. Confirm receptacles, wiring, branch circuits, power supplies, and ventilation. A familiar plug does not make every continuous load safe. Consult a licensed electrician when you are unsure.

// Ready to compare?

See the live buying path.

Use the dedicated comparison page for current product links and the cleanest route from your budget and room to the right miner.

Open the live comparison →Back to The Lab Blog

CryptoCloaks does not guarantee profitability, payback time, or a solo-mining block interval. Results depend on network difficulty, total network hashrate, uptime, pool terms, fees, bitcoin price, and electricity cost.

The post Best Home Bitcoin Miner 2026: BC04 vs Nano 3S vs Mini 3 vs Avalon Q appeared first on CryptoCloaks.

Security Incident Brief // Updated August 5, 2026

The Coldcard trust failure is bigger than a firmware update.

Affected Coldcard firmware generated some wallet secrets from dramatically less entropy than owners were promised. Fixed firmware protects future generation, but it cannot strengthen an existing weak seed.

Severity: CriticalActive exploitation reported by BlockMigration required for affected seeds

CryptoCloaks
Editorial Position

CryptoCloaks does not recommend using Coldcard for Bitcoin custody.

Our recommendation is to stop relying on Coldcard as your long-term primary signing platform, migrate any affected seed, and generate your replacement through a different, independently trusted key-generation workflow. An owner may still need the existing device temporarily to authorize a careful migration. Do not destroy it or its backup before the move is verified.

This is CryptoCloaks’ recommendation. It is stronger than Coinkite’s official guidance, which says fixed firmware corrects future seed generation. We are making a trust and risk-management judgment; we are not claiming that every updated Coldcard or every seed ever imported into one is mathematically compromised.

Evidence standard: Primary-source claims only, with opinion clearly labeled

Coinkite advisoryCoinkite technical reportBlock EngineeringColdcard firmware notes

~40 bitsCoinkite’s preliminary effective-search-space estimate for affected Mk2/Mk3 seeds.

~72 bitsCoinkite’s preliminary estimate for affected Mk4, Mk5, and Q seeds.

50 rollsMinimum fair, independent, private D6 rolls for Coinkite’s stated exception.

New seedRequired after fixed firmware. Updating alone does not repair the old seed.

Immediate warning

If a funded seed was generated on affected firmware without at least 50 fair, independent, private dice rolls, follow the migration guidance now. A strong, unique BIP-39 passphrase may reduce immediate exposure, but Coinkite says it does not repair the affected seed and passphrase users should also migrate as soon as practical.

01

Stop depositing

Do not send new funds to a wallet controlled by a potentially affected seed.

02

Verify the seed’s origin

Identify the model, release track, and firmware that generated it. Today’s firmware version is not enough.

03

Migrate calmly

Generate a new seed through a trusted process, verify backups and addresses, send a test, then move the balance.

01 // SCOPE

What is verified, and what is our judgment?

The most important accuracy rule is not to turn a serious, confirmed RNG failure into claims the evidence does not support.

Verified fact

Affected seeds may be searchable offline

The wrong PRNG implementation reached wallet secret generation. Coinkite estimates materially reduced effective search spaces.

Verified fact

New firmware cannot heal an old seed

The fixes change future random generation. Funds on an affected seed must be moved to a newly generated seed unless Coinkite’s dice exception applies.

Our recommendation

Do not choose Coldcard for new primary custody

This is CryptoCloaks’ assessment of vendor trust, review quality, and key-generation risk after the disclosure.

Important boundary

This incident is not evidence that an attacker can remotely control every Coldcard. A seed securely generated somewhere else and later imported into a Coldcard was not created by this faulty RNG path. TAPSIGNER, OPENDIME, and SATSCARD use different codebases and Coinkite says they are not affected by this bug.

02 // FAILURE

What happened inside Coldcard?

During a 2021 cryptographic-library migration, Coldcard wallet generation changed from its board-specific hardware RNG path to ngu.random.bytes(). That call resolved to MicroPython’s deterministic Yasmarang fallback instead of the intended hardware random-number generator.

The hardware RNG code was still present in the firmware binary, but the wallet-generation path did not reach it. The fallback exposed the same function shape, so the build completed. Code review confirmed that the intended implementation existed; it did not prove which implementation the seed-generation call actually used.

The result was not merely “bad-looking randomness.” A deterministic generator can produce output that appears statistically uniform while still selecting from a candidate family far smaller than the expected 128-bit or 256-bit security target. An attacker can generate candidates offline and use public wallet material, such as an address or extended public key, to test them.

“We are publishing this advisory early, because active exploitation is under way.”

Block Engineering, while also stating it had not completed full empirical testing for every exploit scenario

Block says its investigation followed theft reports and concluded that active exploitation was underway. Block also explicitly says its report reflects its current understanding and that it had not performed full empirical testing to confirm every exploit path. CryptoCloaks has not independently verified individual theft claims. We therefore present Block’s statement as Block’s conclusion, not as independent proof of each reported loss.

03 // EXPOSURE

Which Coldcard models and firmware are affected?

The version that generated the seed is what matters. Installing safe firmware today does not change how an existing seed was created.

Model / track	Affected seed-generation firmware	Fixed before replacement generation	Coinkite estimate
Mk2 / Mk3 Affected range	4.0.1 through 4.1.9 inclusive	4.2.0 or later	About 40 bits
Mk4 / Mk5 standard Affected before fix	Before 5.6.0	5.6.0 or later	About 72 bits
Q standard Affected before fix	Before 1.5.0Q	1.5.0Q or later	About 72 bits
Mk4 / Mk5 Edge Separate track	Before 6.6.0X	6.6.0X or later	About 72 bits
Q Edge Separate track	Before 6.6.0QX	6.6.0QX or later	About 72 bits

Version discrepancy handled explicitly

Block’s technical timeline labels the Mk2/Mk3 range as 4.0.0 through 4.1.9. Coinkite’s owner-facing advisory and technical backgrounder list 4.0.1 through 4.1.9 and say the vulnerable wallet-generation path entered production in March 2021. Our decision table follows Coinkite’s current owner guidance. If you cannot prove how your seed was generated, do not gamble on the boundary; migrate.

Standard and Edge are different release tracks. A numerically higher older Edge version is not automatically fixed. Use the fixed release for the model and track you actually run.

04 // SEVERITY

How serious is the Coldcard entropy risk?

Coinkite’s current estimates are approximately 40 bits for affected Mk2/Mk3 generation and approximately 72 bits for affected Mk4/Mk5/Q generation. Both are below the intended security target.

These are preliminary effective-search-space estimates under stated attack assumptions, not promises that every wallet takes the same amount of work to recover. Practical attack cost depends on what can be constrained about device identity, boot timing, prior PRNG calls, derivation paths, passphrases, and public wallet information.

Block’s independent analysis describes deterministic fallback behavior on Mk2/Mk3 and a later-model reseed that retained only four bytes, or 32 bits, from secure-element-derived material. Coinkite says the later secure-element input materially improved Mk4, Mk5, and Q compared with Mk2/Mk3, but still did not meet the intended security level.

Decision standard

You do not need to predict an attacker’s budget before acting. If an affected seed controls funds and the documented dice exception does not apply, treat the seed as exposed enough to require migration.

05 // RESPONSE

What should Coldcard owners do now?

Do not panic-migrate

A rushed transfer can create a more immediate loss than the issue you are addressing. Verify firmware, backups, wallet fingerprints, and receive addresses on trusted hardware. Send a small test before moving the full balance.

1. Stop sending new funds to the potentially affected wallet. Preserve the existing device and backup long enough to authorize and verify the migration.
2. Determine the seed’s origin. Record the model, standard or Edge track, and firmware version that generated it. If the history is uncertain, treat that uncertainty as risk.
3. Read the current primary guidance. Use Coinkite’s security advisory and technical backgrounder, not screenshots or early summaries.
4. Prepare a different trusted generation workflow. CryptoCloaks recommends not using Coldcard to generate the replacement. If you instead follow Coinkite’s path, install and verify the fixed release before creating anything new.
5. Create a completely new seed. Never “upgrade” by reusing the affected words. Do not type seed words or private dice rolls into a website, chat, cloud note, or ordinary networked computer.
6. Back up and reproduce the new wallet. Verify the wallet fingerprint and a receive address. Keep any BIP-39 passphrase separate from the seed words.
7. Send a small test transaction. Confirm receipt and prove that you can reproduce the same wallet before transferring the remainder.
8. Move the remaining funds and retire the old seed. Keep the old backup until every expected balance has arrived and confirmed. Then prevent the compromised or suspect seed from receiving funds again.

Mk2/Mk3 owners who have only one device should follow Coinkite’s dedicated one-device sequence rather than improvising. CryptoCloaks’ stronger platform recommendation does not change the need to preserve access long enough to move funds safely.

06 // EXCEPTIONS

Dice rolls and passphrases: what actually changes the risk?

At least 50 fair, independent, private D6 rolls

Coinkite says the bug did not erase independent entropy added through Coldcard’s dice-roll seed flow. Its current guidance states that 50 to 98 fair, independent, private D6 rolls contribute at least 128 bits of entropy, while 99 or more contribute approximately 256 bits.

• 50 or more qualifying rolls: Coinkite does not consider the resulting final seed at risk from this RNG issue alone.
• Fewer than 50, uncertain count, predictable rolls, recorded rolls, or exposed rolls: migrate.
• The exception applies to the final seed words displayed after the rolls were added. It does not apply if you later used a different seed.

Dice are secret key material

Do not photograph rolls, save them digitally, paste them into an online calculator, or enter real rolls on a normal networked computer.

A strong BIP-39 passphrase is a separate barrier, not a repair

A strong, unique, secret BIP-39 passphrase can make immediate candidate testing harder because an attacker must also discover the passphrase wallet. A short, common, patterned, quoted, reused, exposed, or uncertain passphrase should not be treated as protection. The Coldcard PIN is not a BIP-39 passphrase.

Coinkite still recommends that passphrase users migrate as soon as practical. Every passphrase, including a typo, creates a valid but different wallet, so compare the wallet fingerprint before moving funds.

07 // ROOT CAUSE

How did the wrong random-number generator ship?

Coldcard moved elliptic-curve operations to Bitcoin Core’s libsecp256k1 through the embedded libNgU library. During that migration, seed generation changed from ckcc.rng_bytes() to ngu.random.bytes().

The board configuration defined MICROPY_HW_ENABLE_RNG as zero because Coldcard supplied a separate hardware-RNG wrapper. LibNgU checked whether the macro was defined, not whether its value was nonzero. MicroPython used the zero value to compile its deterministic fallback. Compatible function signatures allowed the wrong implementation to satisfy the build.

On affected Mk2/Mk3 firmware, the fallback was seeded mainly from device and timing state. On Mk4, Q, and Mk5, secure-element values were mixed into the software generator, but Block’s analysis says only four digest bytes reached the reseed function.

Coinkite says the hotfix removes the fallback PRNG object and adds a link/build-time symbol check so the build fails unless the board-specific RNG implementation supplies the expected symbol and the upstream fallback supplies none.

08 // OTHER USES

The RNG stream was used beyond ordinary BIP-39 seed generation.

Block’s report says the same ngu.random construction fed additional functions, including random paper-wallet keys, random Seed XOR masks, some cloning and encrypted-transfer keys, generated Secure Notes passwords, and other temporary key material.

That does not mean every feature has the same impact or that every use reveals the main wallet. Consequences depend on whether public material allows candidate private values to be tested and what an attacker captured. A vulnerable paper-wallet key, for example, could threaten that standalone paper wallet without necessarily exposing the device’s primary seed.

Advanced-feature users

If you used Coldcard-generated paper wallets, random Seed XOR masks, cloning transfers, or generated Secure Notes passwords on affected firmware, read Block’s complete technical report and monitor Coinkite’s updates. Do not infer the impact from the BIP-39 table alone.

09 // TRUST

Why CryptoCloaks does not recommend Coldcard.

A hardware wallet is a trust decision about key generation, implementation review, release engineering, and incident response. The specific hotfix matters, but so does the failure mode that reached production.

• The intended secure RNG implementation existed in the firmware, yet the critical wallet-generation path reached a deterministic fallback.
• The integration survived builds and review because symbol presence was mistaken for proof of runtime binding.
• The affected path remained in released firmware across multiple product generations and release tracks.
• The same random stream was used by functions beyond standard seed generation.
• Coinkite’s own estimates say some affected seeds delivered far less search resistance than users expected.

Coinkite has published fixes, owner guidance, and a technical backgrounder. Those actions matter and should be judged on their merits. Our conclusion is still that we are not comfortable recommending Coldcard for new or primary custody. That is a vendor-trust conclusion, not a claim that the fixed firmware is secretly proven broken.

Choose a different signing workflow, then verify it yourself.

CryptoCloaks recommends a stateless, air-gapped signing workflow with independently generated entropy and reproducible wallet fingerprints. Our SeedSigner+ product is a case and electronics kit and requires a Raspberry Pi Zero; it is not a complete ready-to-sign device by itself. No hardware or kit removes the need to verify the build, seed process, backup, fingerprint, and receive address.

See the SeedSigner+ case and electronics kitBuild a safer backup plan

CryptoCloaks sells the linked kit and physical backup tools. That commercial relationship is disclosed because it can affect our incentives. The technical claims above remain linked to primary sources.

10 // FAQ

Accuracy-first Coldcard entropy FAQ

Was every Coldcard remotely hacked?

No. The confirmed issue is an RNG integration failure that can make some generated secrets searchable offline. It is not evidence that an attacker remotely controls every Coldcard.

Should I keep using Coldcard after installing fixed firmware?

Coinkite says fixed firmware corrects future generation. CryptoCloaks does not recommend using Coldcard for Bitcoin custody. That is our trust judgment, not proof that every corrected device remains cryptographically vulnerable.

Does new firmware fix my existing seed?

No. Firmware cannot retroactively add entropy to a seed that already exists. Affected owners need a completely new seed and a verified fund migration unless Coinkite’s independent dice-entropy exception applies.

Does the Coldcard PIN protect an affected seed?

No. The device PIN controls access to the hardware. It is not a BIP-39 passphrase and does not add an independent secret to offline candidate testing against public wallet data.

I used a BIP-39 passphrase. Am I safe?

A strong, unique, secret passphrase adds a separate barrier and may reduce immediate exposure. Weak or uncertain passphrases should not be trusted. Coinkite still recommends migrating because the passphrase does not repair the affected seed.

I entered at least 50 dice rolls. Do I need to migrate?

Coinkite says at least 50 fair, independent, private D6 rolls in the original seed-creation flow contribute at least 128 bits and the final seed is not considered at risk from this RNG issue alone. If the count, fairness, privacy, or final seed is uncertain, migrate.

What if my seed was generated somewhere else and imported?

This bug concerns entropy produced by the affected Coldcard firmware path. A seed securely generated elsewhere was not weakened merely by being imported. Its safety still depends on its original generation, handling, passphrase, and backups.

Should I destroy my Coldcard and old backup now?

No. Preserve the device and old backup until the new wallet is verified and the complete expected balance has arrived. Destroying the only usable authorization path before migration finishes can cause permanent loss.

11 // SOURCES

Primary and independent technical sources

• Coinkite: Coldcard Security Advisory
• Coinkite: Technical Deep Dive into the Entropy Issue
• Coldcard: Current firmware and upgrade instructions
• Coldcard: Verifying dice-roll math
• Coldcard: BIP-39 passphrase documentation
• Block Engineering: Predictable RNG Fallback and 32-Bit Reseed in Coldcard Firmware

SECURITY NOTE // CryptoCloaks will never ask for your seed words, passphrase, dice rolls, xprv, private keys, or wallet backup. No legitimate migration help requires sending those secrets to us.

The post Coldcard Entropy Bug: Why CryptoCloaks Does Not Recommend Coldcard appeared first on CryptoCloaks.

That is what CryptoCloaks has been building since 2017. We design and print Bitcoin art, home-mining gear, self-custody tools, hardware-wallet cases, and useful everyday pieces in Colorado. Some products are practical. Some are completely unnecessary in the best possible way. The Original Bitcoin Grenade manages to be both.

This guide explains the main categories, what each accessory actually does, and which products make sense for your setup. Prices below were verified on July 27, 2026 and can change.

3D Printed Bitcoin Accessories at a Glance

Bitcoin Art That Does Not Look Generic

The Original Bitcoin Grenade is where this category starts. CryptoCloaks created it in 2020 for the CryptoEcon conference in Hanoi. It has since become a recognizable piece of Bitcoin culture instead of another anonymous logo product.

The current Gen 3 version is fully 3D printed, available in more than 25 colors, and built with a removable carbon-fiber-infused top. The body is hollow, so it can hold an Opendime, a note, or another small object. It is still a novelty art piece, not a real grenade, but it has an actual use beyond sitting on a shelf.

At $25, the standard grenade is the best place to start. The BIG BOI Bitcoin Grenade takes the same idea to approximately five inches wide by nine inches tall. It costs $79.99 and works better as a shop, conference, office, or studio centerpiece.

Smaller versions carry the same design into inexpensive gifts. The Bitcoin Grenade Squish Key Chain is $4.99, while the Bitcoin Grenade Magnet is $1.99. Those are easy add-ons when the full-size version is more grenade than the situation requires.

3D Printed Bitcoin Mining Accessories

Home miners are exposed boards, fans, cables, and hot air until somebody designs the missing physical pieces around them. This is where 3D printing is useful. A product can be built around the exact board outline, port locations, fan size, and duct opening without requiring an expensive injection mold.

BitAxe stands and cases

The single BitAxe Stand costs $7 and holds one supported miner upright. It keeps the board from lying loose on a desk while leaving the display and ports accessible. Double and triple versions organize multiple boards in one base.

If you are deciding between them, the single vs double vs triple BitAxe stand comparison covers current capacity, pricing, compatibility, color zones, and placement tradeoffs. Buy for the number of miners you actually expect to run. One miner does not need a three-miner rack, and three separate miners do not always need to be locked into one cluster.

Avalon Q exhaust control

The Canaan Avalon Q Exhaust Shroud solves a different problem: heat. It attaches to the miner’s exhaust and connects it to standard 6-inch or 8-inch flexible duct. That lets you route hot air toward a window, another room, or a space where the heat is useful.

The shroud is printed in PETG for better heat resistance than basic decorative PLA. It is a $25 accessory designed around the Avalon Q rather than a generic reducer that almost fits. The complete Avalon Q exhaust shroud guide explains duct sizing and placement in more detail.

A stand or shroud does not change the miner’s electrical requirements. It organizes hardware and manages airflow. Keep every miner in an open area, follow the manufacturer’s power guidance, and do not treat a printed part as a substitute for electrical safety.

Self-Custody and Hardware-Wallet Accessories

The most useful 3D printed Bitcoin accessories are often alignment tools and fitted cases. They do not replace the security device or backup material. They make those systems easier to assemble, protect, and use correctly.

Blockmit Washer Jigs

The Blockmit Washer Jigs hold a metal washer and help position each stamped letter. Two jigs currently cost $5. The jig is not the backup itself. The stamped metal washers are the durable record, while the printed tool keeps the lettering organized and readable.

You will still need stainless-steel washers, a hammer, a solid work surface, and a 3 mm letter-punch kit. Never stamp a real seed phrase where cameras, microphones, cloud-connected notes, or other people can capture it. The metal seed phrase stamping guide covers the process and the privacy precautions.

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.

The Tomb hidden seed plate holder

The The Tomb Bitcoin seed plate holder mounts a compatible Billfodl, CRYPTOTAG, or larger rectangular metal backup behind an insect-deterrent disguise. It includes four #8 screws and costs $14.99. The printed holder adds concealment; the metal plate remains the durable backup.

Coldcard Q cases

The Coldcard Q Solid Color Case is $7.99 and wraps the signing device in a fitted outer shell. It helps prevent cosmetic damage and makes a specific device easy to identify when more than one is stored securely.

A case does not make poor key management safe. It protects the device’s exterior. Your PIN, backups, passphrases, firmware verification, and physical storage remain your responsibility. Read the Coldcard Q case guide if you want a deeper look at fit and case choices.

SeedSigner cases

SeedSigner is a do-it-yourself signing-device project assembled from separate hardware. A fitted enclosure turns those parts into one usable handheld unit. The SeedSigner Orange Surf Case is currently $9.99. As with every SeedSigner enclosure, confirm that the case matches your exact screen, camera, and board configuration before ordering.

Useful Bitcoin Gear for Desks, Homes, Music, and Golf

Not every Bitcoin accessory needs to secure keys or cool a miner. Small printed products work well when the shape, color, and layer texture are part of the point.

• Bitcoin Coaster x2: Two PLA coasters for $12.99.
• Bitcoin Guitar Picks: A ten-pack of playable picks for $4.99.
• Bitcoin Golf Tees: A five-pack for $6.99.
• Bitcoin B US Outlet Cover: A $4.99 replacement cover for a small permanent Bitcoin detail in a room.
• Bitcoin Grenade Magnet: A $1.99 version of the original design for a refrigerator, cabinet, or tool chest.

These are good entry points because they are inexpensive, useful, and easy to gift. They also make sense as cart add-ons after the main CryptoCloaks product rather than pretending a tiny magnet is the center of the Bitcoin universe.

How CryptoCloaks Makes 3D Printed Bitcoin Accessories

Every design starts with the thing it needs to fit or the problem it needs to solve. For a miner stand, that means board dimensions, screen visibility, cable access, fan clearance, and stability. For a hardware-wallet case, it means button access, port clearance, and a secure fit. For the Bitcoin Grenade, it means preserving the original silhouette while making the top removable and the body useful.

The parts are produced layer by layer on the CryptoCloaks printer farm in Colorado. Printing in small batches lets us offer far more color combinations than a conventional molded product and revise designs when hardware changes. It also means the layer lines are part of the finished object. These are printed parts, not injection-molded parts pretending otherwise.

Material depends on the job. Decorative and general-use pieces often use PLA. Products near sustained miner exhaust may use PETG for additional temperature resistance. Product pages identify the important material and compatibility details, so check the specific listing instead of assuming every printed item behaves the same way.

Minor surface variation can happen with any printed part. That does not mean a poor fit is acceptable. Functional products should still mount securely, expose the correct controls and ports, and do the job described on the product page.

How to Choose the Right Accessory

Start with the exact hardware model

Do not buy a case or stand because the product names sound close. Match the exact BitAxe board, Coldcard model, SeedSigner build, miner, fan, or duct size. Small revisions can move a port or change an enclosure dimension enough to matter.

Separate protection from security

A printed hardware-wallet case protects the exterior. A Blockmit jig helps create a backup. Neither replaces good self-custody practices. Know what the product does and what it does not do.

Choose material for the environment

A coaster and an exhaust adapter do not live in the same conditions. Pay attention to heat, direct sunlight, impact, and mounting stress. If the product sits near a miner, use the product specifically designed for that miner and temperature range.

Buy the main product first

If you came for the Bitcoin Grenade, start with the grenade. If you need to manage Avalon Q exhaust, start with the shroud. Small accessories can complete an order, but the correct primary product should solve the reason you came to the shop.

Frequently Asked Questions

What are 3D printed Bitcoin accessories?

They are printed physical products designed for Bitcoin art, mining hardware, signing devices, seed phrase backups, desks, homes, and hobbies. The useful versions are built around a specific purpose or exact device rather than adding a logo to a generic object.

What is the best 3D printed Bitcoin accessory to start with?

The Original Bitcoin Grenade is the signature CryptoCloaks piece and the best general starting point. For a practical purchase, choose the stand, case, shroud, or backup tool that matches hardware you already own.

Is the Bitcoin Grenade real?

No. It is a 3D printed novelty art piece and storage object. It does not contain explosives and cannot function as a real grenade.

Are 3D printed hardware-wallet cases secure?

A fitted case can protect the outside of a signing device, but it does not improve the cryptographic security of the wallet. Buy the correct case, inspect the fit, and continue following the device manufacturer’s security instructions.

Are the products made in the United States?

CryptoCloaks designs, prints, packs, and ships its products from Colorado.

Can I choose custom colors?

Many CryptoCloaks products have live color choices. The available zones and colors vary by product, so use the selectors on the individual listing.

Can I pay with Bitcoin?

Yes. CryptoCloaks accepts Bitcoin, and traditional payment methods are available too.

Start with the Piece Your Setup Actually Needs

The right accessory is obvious once the problem is clear. Protect the hardware you own. Route the heat your miner produces. Build a backup you can recover. Or put the Original Bitcoin Grenade on the desk and accept that everyone is going to ask about it.

• Shop the Original Bitcoin Grenade
• Shop the BitAxe Stand
• Shop the Avalon Q Exhaust Shroud
• Shop the Blockmit Washer Jigs
• Shop the Coldcard Q Case

Every core product above is designed or produced by CryptoCloaks in Colorado. Bitcoin accepted. Fiat works too.

The post 3D Printed Bitcoin Accessories: The Complete Guide (2026) appeared first on CryptoCloaks.

That is the short answer. The longer answer comes down to desk space, how many miners you actually run, and whether you want every board in one clean setup or separate stands you can move around.

This BitAxe stand comparison covers the current CryptoCloaks single, double, and triple stands using live prices and confirmed compatibility. No vague shit. Just what fits and what each option costs.

BitAxe Stand Comparison at a Glance

Prices and availability verified July 19, 2026. Product pricing can change.

Single BitAxe Stand: Best for One Miner

The single BitAxe Stand is the simple answer when you run one miner. It holds the board upright, gives the hardware a finished case-and-stand setup, and lets you choose the case and stand colors separately.

It is also the better choice when your miners need to live in different places. Three single stands cost more than one triple, but you can put one on a desk, one on a shelf, and one near another network or power location. A multi-miner stand keeps the hardware together by design.

• Capacity: One BitAxe miner
• Current price: $7.00
• Customization: Separate case and stand colors with 25-plus live options
• Current store rating: 5.00 from 5 reviews
• Best reason to buy it: You have one miner and do not need a cluster

Double BitAxe Stand: The Two-Miner Middle Ground

The BitAxe Double Stand holds two supported boards side by side. At $12.00, it costs $6.00 per miner and gives you three independent color zones: one for each case and one for the base.

This is the clean middle ground. You get one compact unit without leaving an empty third slot on the desk. If two miners are the real plan, the double is the right size.

• Capacity: Two BitAxe miners
• Current price: $12.00
• Customization: Two case colors plus the stand color
• Current store rating: 5.00 from 3 reviews
• Best reason to buy it: Two miners, one organized setup

Triple BitAxe Stand: Best for a Three-Miner Cluster

The BitAxe Triple Stand is for people running three boards or people who know the second miner will not be the last one. It costs $18.00, which works out to the same $6.00 per-miner capacity as the double.

You choose a color for each of the three cases and another color for the base. That gives you four color zones and enough combinations to make the stand clean, loud, matching, or completely unhinged. Your desk, your call.

• Capacity: Three BitAxe miners
• Current price: $18.00
• Customization: Three case colors plus the stand color
• Current store rating: 5.00 from 4 reviews
• Best reason to buy it: Three miners in one compact unit

Cooling and Airflow

All three stands keep supported BitAxe boards upright instead of leaving them loose on a desk. That makes the setup cleaner and keeps the board and ports easier to access.

The current stand designs also support adding a rear 60mm fan with a compatible splitter. That can give you directed airflow if you are running in a warm room or pushing settings harder than stock. The fan and splitter are separate parts, so check the product page before ordering if active cooling is part of your plan.

Do not cram any miner against a wall or inside a closed cabinet. A stand organizes the hardware. It does not make heat disappear.

Confirmed Board Compatibility

The single, double, and triple CryptoCloaks stands are offered for these BitAxe boards:

• BitAxe Supra 401
• BitAxe Supra 403
• BitAxe Gamma 601

Select the correct board option on the product page. Do not assume a newer or different BitAxe model uses the same case geometry. The BitAxe Turbo Touch, for example, has its own stand and case.

If you are still building the rest of the setup, the complete BitAxe accessories guide covers power, cooling, cases, and other desk-mining parts.

Which BitAxe Stand Should You Buy?

Buy the single stand if:

• You run one BitAxe
• You want the lowest upfront price
• You want to place miners in separate locations
• You want each miner to have its own movable stand

Buy the double stand if:

• You run exactly two miners
• You want one compact unit
• You do not need to leave room for a third board
• You want separate colors for both cases

Buy the triple stand if:

• You already run three miners
• You are buying a second miner and know another one is probably coming
• You want the most capacity in one stand
• You want independent colors across all three cases and the base

My recommendation: Buy for the number of miners you realistically expect to run over the next few months. One miner means single. Two and done means double. If you are already eyeing miner number three, get the triple once and stop rearranging the desk.

BitAxe Stand FAQ

Does the BitAxe stand include a miner?

No. These listings are for the printed stand and case setup. The BitAxe miner is not included unless a product page explicitly says otherwise.

Will a Gamma 601 fit?

Yes. The current single, double, and triple stand listings include a Gamma 601 board option. Select Gamma 601 when ordering.

Can I mix Supra and Gamma boards in a multi-miner stand?

The multi-miner stands offer supported board choices, but confirm your exact mixed configuration with CryptoCloaks before ordering if the boards use different case pieces. Fit comes before guessing.

Can I choose a different color for every miner?

Yes. The double stand has separate case-color choices for both miners plus the base. The triple has separate choices for all three cases plus the base. The single lets you choose the case and base independently.

Do I need the double or triple stand for better cooling?

No. Pick the stand based on miner count and placement. If you need more airflow, use the supported rear-fan setup and keep the miner in an open area.

Why not buy three single stands?

Three singles give you more placement flexibility. One triple keeps all three miners together and costs less per miner at current pricing. Neither is universally better. It depends on whether you want separate units or one cluster.

Build the Setup You Actually Need

There is no reason to overthink this. Count the miners. Decide whether they need to move separately. Pick the stand that fits.

• Shop the Single BitAxe Stand
• Shop the Double BitAxe Stand
• Shop the Triple BitAxe Stand

All three are printed in Colorado with live color choices on each product page. Bitcoin accepted. Fiat works too.

The post Single vs Double vs Triple BitAxe Stand: Which Fits? appeared first on CryptoCloaks.

New Bitcoin mining and self-custody gear at CryptoCloaks

Bitcoiners do not need more generic orange junk. They need gear that fixes real problems: heat, airflow, noisy miners, messy desks, loose hardware wallets, bad cable piles, and self-custody tools that never have a proper home.

That is the lane CryptoCloaks keeps building in. The newest product drop is split into two piles: home Bitcoin mining gear and self-custody desk gear. One side helps move heat and hashrate around the house without turning the place into a server closet. The other side keeps signing devices upright, organized, and ready when it is time to use them.

If you are searching for an Antminer shroud, a quiet home Bitcoin miner, a ColdCard Mk5 dock, or a cleaner hardware wallet setup, start here.

What is new?

• V4 Antminer dual 120mm shrouds for 6-inch and 8-inch ducting.
• Hammer Miner BC01, the low-power 1.5 TH/s desktop miner.
• Hammer Miner BC04, the 6 TH/s home miner sweet spot.
• Hammer Miner BC08, the 12 TH/s desktop option for bigger home setups.
• ColdCard Mk5 Dock with a built-in USB-C to USB-C cable.
• MK5 ColdCard Mount for a simple dedicated wallet home.
• Trezor Safe 7 Dock for a cleaner USB-C signing station.
• Canaan Avalon Nano 3S Dual Cooler Box Bundle for a 12 TH/s home mining heater setup.

Which new CryptoCloaks product should you buy first?

Start with the problem, not the product.

• Your ASIC is cooking the room: get the V4 Antminer shroud in the duct size your setup needs.
• You want to start home mining: get the Hammer Miner BC01 if you want the lowest-cost entry, or BC04 if you want the cleaner sweet spot.
• You want more desktop hashrate: look at the Hammer Miner BC08.
• You want useful mining heat: look at the Nano 3S Dual Cooler Box Bundle.
• Your signing desk is a cable nest: get the ColdCard Mk5 Dock or Trezor Safe 7 Dock.
• Your ColdCard lives loose: get the MK5 mount, Coldcard Q case, or ColdCard Q sleeve.

Why this stuff belongs together

Home Bitcoin mining and self-custody are not separate worlds. They are the same mindset showing up in different corners of the house.

You run your own miner because you want to understand the system, maybe catch some sats, and keep Bitcoin physical enough to matter. You organize your signing tools because keys are not a browser tab. The whole point is ownership with fewer dumb failure points.

That is why CryptoCloaks keeps making practical Bitcoin hardware accessories instead of random logo filler. Shrouds move heat. Docks clean up signing stations. Cases protect real devices. Miners get people hashing from home. That is the work.

The post New Bitcoin Mining and Self-Custody Gear: V4 Antminer Shrouds, Hammer Miner, ColdCard Docks appeared first on CryptoCloaks.

Yes, a Canaan Avalon Nano 3S can technically find a Bitcoin block. That does not mean you should buy one expecting it to happen.

The Nano 3S solo-block story is getting attention because it hits the exact nerve Bitcoiners love: a small home miner taking a shot while giant mining farms fill warehouses. That part is real. The part people need to understand is the math.

If you want a small home Bitcoin miner for learning, heat, sats, and the lotto-ticket fun of solo mining, the Nano 3S makes sense. If you want guaranteed profit, wrong machine and wrong mindset.

Shop the Canaan Avalon Nano 3S

Can a Nano 3S really find a Bitcoin block?

Yes. Any miner pointed at the Bitcoin network can theoretically find a block if it submits the winning hash. That includes a tiny desk miner, a Bitaxe, a Nano 3S, an Avalon Q, or a warehouse full of ASICs.

But “can” and “should expect to” are two different worlds.

At a rough current network difficulty check, a single 6 TH/s Nano 3S would average something like thousands of years per solo block if it were mining alone. That number changes every difficulty adjustment, but the lesson does not: solo mining on a small box is a lottery ticket.

That is not an insult. That is the whole point for a lot of home miners. You run the machine because it teaches you Bitcoin, throws useful heat, supports the network, and gives you a tiny shot at something ridiculous.

Solo mining vs pool mining

Is the Avalon Nano 3S profitable in 2026?

The honest answer: it depends on your power rate and what you count as “profit.”

If you only measure dollars in and dollars out, a small 6 TH/s miner is not the same game as industrial mining. You are competing against serious hardware, cheap power, and scale. Do not buy a Nano 3S because someone on social media made it sound like a daily cash machine.

But home miners usually care about more than a spreadsheet:

• You learn how mining actually works.
• You turn some electricity into heat instead of wasting it through a dumb space heater.
• You can stack small sats through pool mining.
• You can run solo and take the long-shot block ticket.
• You get a real Bitcoin machine on your desk instead of another app pretending to be ownership.

That is the lane. Treat it like home Bitcoin gear, not a guaranteed income plan.

The clean CryptoCloaks Nano 3S setup

So should you buy one?

Buy a Nano 3S if you want a real little Bitcoin miner at home and you understand the game. It is fun, it is educational, it makes heat, and it gives you a small physical connection to the network.

Do not buy it because a block headline made it sound like easy money. That is how people get disappointed.

The right expectation is simple: pool mine for steady learning, solo mine for the lotto ticket, and build the setup clean enough that you actually want it running every day.

FAQ

Can a Canaan Avalon Nano 3S find a Bitcoin block?

Yes, technically. Any valid Bitcoin miner can find a block. A single small miner has extremely low odds, so treat solo mining like a lottery ticket, not a plan.

Should I solo mine or pool mine with a Nano 3S?

If you are new, pool mining is usually the better first move because you get regular feedback and small payouts. Solo mining is for people who understand the odds and want the long-shot block chance.

Is the Nano 3S good for home mining?

Yes, if your expectations are right. It is small, simple, and built for home use. It is not a warehouse miner and it should not be judged like one.

Does the Nano 3S need a cooler box or stand?

It does not need one to turn on, but a clean stand helps if you run it constantly. Better cable routing, a stable layout, and cleaner airflow make the whole setup less annoying.

Is this better than a Bitaxe?

Different lane. Bitaxe is open-source and nerdy in the best way. The Nano 3S is a more appliance-like home miner with more hashrate. Pick based on whether you want DIY culture or a simple desk miner.

Start with the Canaan Avalon Nano 3S

The post Can a Canaan Avalon Nano 3S Find a Bitcoin Block? Home Mining Reality Check appeared first on CryptoCloaks.

The Hammer Miner BC04 sits in the lane a lot of home miners actually need: more serious than a tiny learning board, way easier to live with than a screaming full-size ASIC, and small enough for a desk, shelf, garage bench, office, or apartment mining setup.

This is not the miner for someone trying to build a warehouse. That is the point. The BC04 is for the Bitcoiner who wants to learn mining, point hashrate at a pool, understand heat and uptime, and keep stacking sats without turning the house into a server closet.

Hammer Miner BC04 review for home Bitcoin miners

The Hammer Miner BC04 targets roughly 6 TH/s of SHA-256 hashrate at about 110W stock. Tuned profiles are reported around 6.5 TH/s with power closer to 120-125W, depending on settings and cooling. For most normal home miners, the smart play is simple: run it stock, give it clean airflow, use a stable network connection, and let it work.

The main reason the BC04 is interesting is balance. It has enough hashrate to feel like a real Bitcoin miner, but the power draw stays in a range that makes sense at home. You can put it on a bench or shelf, watch the OLED screen, learn the workflow, and build mining habits without committing to industrial noise, 240V planning, ducting, or a giant heat problem on day one.

That makes it a strong fit for people already looking at the newer home-mining category: BitAxe style miners, Canaan Nano hardware, compact solo-mining gear, and small SHA-256 ASICs that normal people can actually keep around.

Hammer Miner BC04 specs that matter

Who the Hammer Miner BC04 is for

• Bitcoiners who want a real ASIC miner at home.
• New miners learning pools, hashrate, firmware, uptime, heat, and power draw.
• People who do not want an industrial miner screaming in the next room.
• Desk, garage, shelf, office, and apartment setups where low power matters.
• Home miners comparing compact options like BitAxe hardware, the Canaan Avalon Nano 3S, and other small Bitcoin miners.

BC04 vs Nano 3S vs big ASIC miners

The BC04 is the compact desktop ASIC lane. The Canaan Avalon Nano 3S is the small mining-heater lane. A full-size Antminer is the industrial lane. Those are three different jobs, and mixing them up is how people buy the wrong thing.

If you want a little Bitcoin mining heater, the Nano line makes sense. If you want a serious garage or shop miner and can handle noise, power, and heat, industrial hardware is its own category. If you want a low-power desktop Bitcoin miner with a screen, WiFi, Ethernet, and a clean starter package, the Hammer Miner BC04 is the better match.

Setup notes before you buy

Give the BC04 airflow. Do not bury it in a cabinet, do not trap the PSU under clutter, and do not expect tuned profiles to stay quiet if the room is already hot. Low-power mining is still mining. Heat has to go somewhere.

The BC04 supports WiFi, but Ethernet is still the grown-up answer when your setup allows it. Stable network equals fewer dumb headaches. WiFi is useful when the miner lives on a shelf or desk away from the router, but a cable is still cleaner for uptime.

If this is your first miner, start simple. Run stock settings first. Confirm pool connection. Watch hashrate and rejected shares. Learn what normal temps and normal sound are before chasing tuning profiles. The goal is reliable sats, not breaking your first miner trying to win a benchmark screenshot.

Official Hammer Miner resources

Hammer Miner has public GitHub repositories for BC04-APP and BC04-WWW. That matters. Buyers should be able to verify the project is real, find firmware/UI resources, and avoid thin copy-paste reseller pages with no technical trail.

Should you buy the Hammer Miner BC04?

If your goal is quiet, practical home Bitcoin mining, yes, the BC04 belongs on the shortlist. It is compact, makes real SHA-256 hashrate, includes the PSU, supports WiFi and Ethernet, and fits the kind of setup normal people can actually live with.

If your goal is maximum raw hashrate per dollar and you do not care about noise, power, heat, or living space, this is not the miner. Buy industrial hardware and accept the chaos. But for home mining, the BC04 is exactly the kind of machine that keeps Bitcoin mining personal.

Shop the Hammer Miner BC04 at CryptoCloaks.

FAQ

Can the Hammer Miner BC04 mine Bitcoin?

Yes. The Hammer Miner BC04 mines SHA-256 and is intended for Bitcoin mining.

How much hashrate does the Hammer Miner BC04 make?

It is listed around 6 TH/s, with tuned profiles reported up to about 6.5 TH/s depending on profile, cooling, and room conditions.

How much power does the Hammer Miner BC04 use?

Stock operation is around 110W. Tuned profiles are reported around 120-125W.

Does the Hammer Miner BC04 have WiFi?

Yes. It supports 2.4GHz WiFi plus RJ45 Ethernet.

What comes with the Hammer Miner BC04?

The CryptoCloaks listing includes the miner, stand, PSU, and power cable.

Where can I buy the Hammer Miner BC04?

You can buy the Hammer Miner BC04 from CryptoCloaks here.

The post Hammer Miner BC04 Review: Best Quiet 6 TH/s Home Bitcoin Miner appeared first on CryptoCloaks.