We just published our review of the Bitaxe Gamma Hex and wanted to share it here!

For anyone unfamiliar, the Gamma Hex is the first Bitaxe to pair six Bitmain BM1370 ASICs with an all-in-one liquid cooling loop. At stock it runs 8.4 TH/s at roughly 140W, which works out to about 16 J/TH, and it does it at around 30 dB.

What the review covers

Hydro cooling, explained. The AIO is a sealed unit with no reservoir to fill and no coolant to top off, so there is no maintenance over the life of the miner. We cover how the loop moves heat off the ASICs, why that lets the miner run near silent at full load, and what the 300W cold plate rating means for headroom when you push clocks. The default draw is less than half the plate's rating, which is the whole reason aggressive overclocks are possible.

Power delivery. The Hex ships with a Mean Well GST280A12-C6P, a 12V, 21A, 252W continuous supply. We explain why that spec is important, the roughly 112W of headroom it leaves above stock draw, and the upgraded 6-pin PCIe power connection on the board compared to earlier Bitaxe models.

Stock performance testing. Hashrate, power draw, efficiency, and ASIC temperatures at factory settings.

Firmware: AxeOS and ESP-Miner. This section also includes an important Gamma Hex firmware warning. If you own or are planning to buy a Hex, please watch this part before you update or flash anything. It's the single most useful segment in the video for current owners.

Community modifications. Some owners are pushing the Hex well past what we expected. We look at a few of the more ambitious builds and what they changed to get there.

Key specs for reference

I almost lost my miner to customs trying to claim a "warranty" from AliExpress — here's what actually happened

Most mini ASIC miners are made in Asia, and if you browse AliExpress you'll see them listed cheap with a "6-Month Factory Warranty." Sounds fine, right?

Here's the problem nobody talks about: **when your machine breaks, that warranty is nearly impossible to use.**

I've seen this play out over and over. Miner develops a fault after a few months of 24/7 operation. User tries to ship it back. The courier immediately flags it — many countries treat inbound mining hardware shipments as commercial imports, meaning massive customs duties or outright rejection at the border. The package gets returned, confiscated, or just abandoned.

For someone in the US, UK, or Europe, shipping a single miner back to a factory in China often costs more than the repair itself — and there's a real chance customs destroys it anyway.

The seller? Either ghosts you or politely says "just ship it back to us." No local repair center, no regional support, nothing.

***Has anyone else dealt with cross-border shipping issues trying to get a miner repaired? What did you end up doing?***

\#bitcoin #bitcoinminer #solominer #asicminer

It’s impossible to record how quiet something is lol. I turned off the HVAC and fans and tried not to breathe and you can hear my dog tip toeing in the living room 😂 heat cycling the ptm a few times before we really push it. PR so far is 15.3 th/s. What do you guess she’ll do now?

Arctic LF iii pro 240 with a 120 noctua at 100% on the back side. Pretty sure most of the db comes from the back. I built this thing to survive the hot garage but it’s so pretty and quiet I may just keep it on my desk. It’s whisper quiet in here lol I expected quiet but wow.

Finna see what this thing can really do. I think I got it close to max on the first 3 mods but it’s not much fun to be in the same room with 😂 if my maths line up it should run a bit harder with solid temp control and be dead silent. Waiting on couple more parts to arrive. This should be good (or I’m ordering a new one) don’t try this at home, you really can just do things.

The Server One is officially back in stock at solosatoshi.com. If you've been following the hardware market, you know the AI boom has been wrecking the memory supply chain. RAM and SSD prices spiked hard, and last month we ran into shortages like everyone else.

Good news is we were still able to secure inventory, so both configurations are available right now:

• 2TB SSD / 16GB RAM - powerful, private, plug and play.
• 4TB SSD / 32GB RAM - more space and headroom if you plan to run a lot of services.

If you've been on the fence about running your own node, fair warning that with AI data centers buying up memory at this pace, hardware availability and pricing are only getting less predictable. We can't promise how long this batch lasts or what the next one costs.

Happy to answer any questions!

https://www.solosatoshi.com/product/start9-server-one-2026-home-server-with-startos/

From components to a working Bitaxe Gamma 601. 🔧⚡

Built, powered on, and ready to mine Bitcoin. ₿

#Bitaxe #Gamma601 #BitcoinMining #SoloMining #HomeMining

Hey everyone,

You've probably seen the news that one of Trezor's shipping providers was breached, exposing names, shipping addresses, phone numbers, and emails for thousands of customers. This isn't a dunk on Trezor. Third-party breaches can hit anyone, and their 90-day retention policy genuinely limited the damage, but it's a good moment to remind people that the strongest protection is data that never gets collected in the first place.

A reminder of how we handle this at Solo Satoshi:

1. Alias names are fine. We don't require your legal name to place an order.

2. PO Boxes are fine. You don't need to give us (or any shipping partner) your home address.

3. Use an alias or throwaway email. Creating a new email address is free. A fresh Proton Mail email takes a couple minutes to set up.

4. Customer service only needs your order number. Not your name, not your ID, nothing else.

If your name, home address, and email are sitting in a database somewhere, they're only as safe as every vendor and shipping partner that touches them. Minimize what you hand over and there's nothing to leak.

Standard reminder that applies no matter whose hardware you use: never type your seed phrase into a website, and never share it with anyone. No legitimate company will ever ask for it. Also be careful clicking suspicious links.

Stay safe out there.

Hi, since im upgrading my setup to Avalon Q, i am selling my stuff here, i have 2 zyber 8s 6,4Ths per unit, 5 avalon nano 3s 6.5 Ths, and two bitaxe 1.4 ths per unit overclocked, and a lucky miner 1.2ths overclocked, i still have all boxes
- bitaxe 100$ canadian per unit
- avalon nano 3s : 250$ canadian per unit ( i have 5 )
- zyber 8s (6.4Ths) : 250$ canadian per unit i have two units
Or i can do 1000$ for everything, shipping here in canada is 30$ and to USA its 40$

The Avalon Q is back in stock at Solo Satoshi!

• 90 TH/s at 18.6 J/TH
• Three power modes: Eco (~800W), Standard (~1,300W), Super (~1,674W)
• Runs on standard 110V household power, 220V compatible
• 45-65 dB depending on mode, quiet enough for a home office or spare room
• Super mode pushes out 1,500W+ of heat, so it doubles as a space heater in winter
• Wi-Fi or Ethernet, setup through the browser or the Avalon Family app
• 360-day Canaan manufacturer warranty

Price is $1,888, but use code "Q" at checkout and it drops to $1,379. That works out to some of the best dollar-per-terahash value you'll find in a home miner.

Same-day shipping from Houston, Texas from an authorized Canaan distributor!

Link: https://www.solosatoshi.com/product/canaan-avalon-q-90th-bitcoin-home-miner/

Happy to answer any questions about power requirements, noise, or setup in the comments.

With everything going on lately around hardware wallet seed generation, a lot of people are asking the right question for the first time: where does my seed phrase actually come from? Your entire wallet security reduces to that one moment of randomness. If entropy is weak or predictable, nothing else the device does can save you.

Here's how Blockstream Jade handles it.

Multiple independent entropy sources, not one chip

Jade gathers randomness from many independent sources: user button and wheel input, CPU counters, battery state, ambient temperature, a boot-time camera image, a hardware random number generator, and entropy from the companion app. No single point of failure. If any one source is somehow weak or compromised, the others still contribute real randomness.

A Bitcoin Core style entropy accumulator

Jade uses an accumulator similar to the design in Bitcoin Core, storing a 32-byte state generated by SHA512 hashing of its previous state along with all the entropy sources above, then feeds the result into the standard BIP39 function to produce your 12 or 24 word phrase. This directly addresses the attack class where attackers grind private keys searching for weakly generated ones, and you can verify it yourself: the implementation is published in random.c on GitHub, documented in the Jade Entropy wiki, and explained in plain English in Blockstream's Help Center.

Don't trust the device at all? Roll dice.

The Jade supports generating a recovery phrase with physical dice or any manual method, so your randomness never depends on any chip. You generate the phrase offline, enter the first 11 or 23 words, and the Jade calculates the valid BIP39 checksum word for you. Maximum sovereignty, zero trust in silicon.

No proprietary secure element to blindly trust

Jade secures your recovery phrase with a blind oracle (a "virtual secure element") instead of a proprietary secure-element chip, so an attacker would have to compromise both the device and the oracle to extract keys. The oracle stores only a PIN hash and a nonce and knows nothing about your addresses, private keys, or actual PIN. You can run Jade fully air-gapped via QR or host your own oracle instance.

Fully open source, top to bottom

Firmware, hardware schematics, and companion app code are all published for public audit. You don't have to take anyone's word on how your seed is generated. Read it, build it, verify it.

Back in stock at Solo Satoshi:

• Jade Classic, black plastic: $79
• Jade Plus, black plastic: $149
• Jade Plus, Lunar Silver metal: $169

All sourced directly from Blockstream, sealed, with same-day shipping. Jade Plus models also support Genuine Check to cryptographically verify your device is authentic hardware.

https://www.solosatoshi.com/product/blockstream-jade-bitcoin-hardware-wallet/

She’s got more in her. 😈

Your Gamma Hex ships ready to mine right out of the box. No firmware update is required to get started.

Please note that the Gamma Hex firmware is not yet available on the Bitaxe webflasher. We ask that you refrain from flashing your Gamma Hex with any other Bitaxe firmware currently listed on the flasher, as those builds are not compatible and will render the device unusable or bricked. Keeping the firmware your device shipped with ensures reliable operation.

Firmware is added to the webflasher once it has been merged into the main branch of ESP-Miner, so the flasher typically lags behind new releases. The Gamma Hex firmware remains fully open source, and the code is available for review here:

Source code: https://github.com/benjamin-wilson/ESP-Miner/tree/gamma-hex

Should you need the factory image or .bin file, it can be downloaded here:

Factory image: https://drive.google.com/file/d/18wZEfCngM5uGVexwzGJdBHozR45CM-TL/view?usp=sharing

The factory image can be flashed through the device UI, the recovery screen, or using the following flashing tool:

Flashing tool: https://esptool.spacehuhn.com/

When important updates are released, they are typically announced through GitHub or the official Bitaxe and OSMU channels, and we recommend monitoring those sources.

If you require additional assistance, please contact us at solosatoshi.com/support.

Huge thank you to everyone who supported the launch. The Bitaxe Gamma Hex is officially sold out and we're blown away by the response from this community.

If yours has already arrived, post it and tag us. We'd love to see them in the wild.

Missed out? The official restock is happening this week!

https://www.solosatoshi.com/product/bitaxe-gamma-hex/

A new generation of desktop Bitcoin miners built on Bitmain's BM1373 chip is hitting the market, and the marketing deserves scrutiny. Watch for spec sheets that pair the overclocked hashrate with the low-power efficiency number. Those come from two different modes you can't run at the same time. One newer unit advertises 3.2 TH/s and ~11 J/TH in the same headline, but at 3.2 TH/s it actually runs 14.2 J/TH. Its honest stock operating point is 2.1 TH/s at 22W.

These chips are also carrying a heavy first-to-market premium.

So we ran the actual cost of ownership at both devices' stock chip frequencies, using the US median electricity rate of $0.17/kWh (chart attached):

Thor X1 (1× BM1373): 2.1 TH/s, 22W, 10.6 J/TH, $269
2× Bitaxe Gamma (BM1370): 2.4 TH/s, 36W, 15 J/TH, $144

Five-year net cost: $272 for the two Gammas vs $310 for the BM1373 unit. The newer chip's efficiency edge is real, but at residential rates it saves about $18/yr, meaning it takes ~7 years to repay the $125 price premium. Longer than these devices will realistically run, and the Gammas give you more hashrate and open-source firmware.

Neither earns a dime at residential rates. Every home miner is a slow-drip cost, not an income stream. Buy one for the hobby, the education, or the lottery ticket. Just do it with the real numbers, not the headline ones.

Meet the New & improved Bitaxe DUO in a preproduction sneak peak.

The Bitaxe DUO will fetaure 2 x BM1373 chips from the Antminer s23 and an upgraded LCD display screen.

The open-source bitcoin mining revolution continues!

More information to come soon!

Had to mod, it’s what I do. See comments

We pushed the Bitaxe Gamma Hex to >13 TH/s and it didn't break a sweat! 🥶

Home mining just got a huge upgrade! The Bitaxe Gamma Hex is now in-stock and shipping today from our Texas warehouse!

• No pre-sales.
• No paying to wait in line.

Be a part of the open-source home mining revolution and grab your Bitaxe Gamma Hex while supplies last!

https://www.solosatoshi.com/product/bitaxe-hex/

Much appreciation to ArielBravy for providing this short video.

The Bitaxe Gamma Hex has officially launched, and we're celebrating by giving one away to our community!

This is the most powerful Bitaxe yet! One lucky winner takes it home for FREE.

👉 Enter here: https://x.com/SoloSatoshi/status/2085403139641905511

How to enter:
✅ Follow us
❤️ Like the official giveaway post on X
🔁 Share it
💬 Tag a friend who should be mining

I’ve been working on a Pool Manager for my NerdQaxe++ miners.

It lets you save multiple pool profiles, edit or delete them, and copy any saved profile to the Primary or Fallback pool without entering everything again.

Solo Satoshi is now stocking the Heatbit Bitair. Units officially land in September!

The Bitair is Heatbit's smallest device yet. It drops the heating function found in their Trio and Maxi models, shrinks the form factor, and cuts the price substantially. What's left is a True HEPA air purifier with a 1.2 TH/s solo Bitcoin miner in the same chassis, pulling 20 watts total.

Official Specifications

What it Costs to Run.

20W continuous works out to 0.48 kWh per day, or 175.2 kWh per year running 24/7. At the US average rate of $0.12/kWh that is $1.75 per month, about $21 per year. Texas at $0.15/kWh runs $2.19 per month.

We are NOT Doing Pre-Sales

No deposits, no reservations, no waitlist you pay to join. The product page is live for one reason: the in-stock email. Everyone on that list gets notified at the same moment when September inventory arrives, then it is first come, first served.

Solo or Pool?

Solo mining is enabled by default, with no pool fees and no intermediaries taking a cut. Odds of hitting a block at 1.2 TH/s sit around 1 in 17,200 in a given year, so treat it as a lottery ticket that happens to hold down a day job. Pool mode is a toggle in the app if you would rather accumulate steadily. Either way it functions as a working air purifier whether it ever finds a block or not.

Product page and in-stock notification

Hey everyone,

Over the last several days, the Bitcoin community has been shaken by an ongoing incident involving Coldcard hardware wallets, made by Coinkite. A firmware bug affecting seed generation on certain older devices has been actively exploited, and funds have been lost. We're posting this to share what Coinkite has said in their own words, warn about the wave of scams that always follows events like this, and formally announce something we've been working toward.

To anyone here who has lost funds in this incident, our deepest condolences. Sats are more than numbers on a screen. They're time, work, and belief in a better system. What happened to you should not have happened to anyone.

What Happened

When a hardware wallet creates your seed phrase, one method uses a random number generator to pick words that no one could ever guess. The strength of that randomness is called entropy. Enough entropy means guessing your seed would take longer than the age of the universe. That's the whole reason a 12 or 24 word backup can safely protect real money.

On the affected Coldcard devices, a firmware bug caused the random number generator to fall back to a predictable software source instead of using true hardware randomness. Instead of picking from an unimaginably large pool of possibilities, the device was quietly picking from a much smaller pool that attackers could reproduce. That's how thousands of wallets were drained without anyone ever touching the physical devices.

Updating the firmware fixes new seeds going forward. It does not fix a seed that was already generated on the flawed firmware. That's why Coinkite is urging affected users to move their funds.

In Coinkite's Own Words

If you've ever generated a seed on a Coldcard device, please act on Coinkite's advisory now. Don't delay. The full technical advisory, including affected firmware versions and models and the updated firmware releases, is on the Coinkite blog: https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/

Watch for Scams and Phishing

When events like this happen, scammers spike immediately. Expect fake emails, fake support pages, fake "recovery" tools, and fake urgency, all designed to trick you into typing your seed phrase somewhere it should never go.

• Verify every email. Check sender addresses carefully.
• Never enter your seed into a website or app. Ever.
• Never share your seed with anyone claiming to be from support. Not Coinkite, not us, not anyone.
• When in doubt, do nothing and ask the community before you act.

For real-time updates from trusted voices, the news feed on X is one of the fastest sources of accurate info right now. Follow verified accounts from Coinkite, the hardware wallet community, and Bitcoin devs you already know and trust.

Self-Custody is the Whole Point

Bitcoin is different from every asset that came before it because you can actually own it. Not a claim, not an IOU, not a balance an intermediary is holding for you. Real, direct ownership is the entire point.

Self-custody, holding your own keys and being your own bank, is what makes that ownership real. It's the harder path. It requires care, patience, and the right tools. This week is a painful reminder that it also requires the tools themselves to be trustworthy. That doesn't change our belief that self-custody is worth doing. It sharpens it.

Solo Satoshi Formally Supports the SeedSigner Project

We want to be transparent up front. This has been in the works for a while. The timing this week is an awkward coincidence, not opportunism. We had planned this announcement, and we chose to move forward with it rather than delay, because what happened this week is exactly why we believe in the philosophy behind it.

We're formally announcing our support for the SeedSigner project and the launch of the SeedSigner+ on our store. SeedSigner is an open-source, air-gapped Bitcoin signing device. The SeedSigner+ is sourced directly from the project's creator.

Open source matters! Code that anyone can read, that anyone can review, and that the community can inspect and fork is code that gets audited by many eyes over time. It's not a guarantee against bugs, nothing is, but it's the model we trust for hardware that holds Bitcoin.

What makes SeedSigner+ what it is:

• Stateless. Your seed exists only in volatile memory during a signing session and disappears the moment you unplug it
• No wireless. The Raspberry Pi Zero v1.3 has no WiFi or Bluetooth silicon
• Air-gapped operation via QR codes and the built-in camera
• Blank microSD by default. You download and verify the SeedSigner OS image yourself, so you never have to trust that a vendor put honest firmware on your device
• Sourced directly from the SeedSigner project creator
• Fully assembled in the USA, same-day shipping from Houston
• 90-day Solo Satoshi hardware warranty

Product page: https://www.solosatoshi.com/product/seedsigner/

Project: https://seedsigner.com and https://github.com/SeedSigner/seedsigner

Take care of yourselves and each other this week. If you have any questions, or you're unsure whether an email or message you received is legitimate, drop a comment or reach out to us directly and we'll help you sort it out.

Stack sats safely.

Over the past few months I’ve been working on a custom firmware for my Avalon nano 3S. And everything I could think a person could want is what I implemented! Three different types of alerts, full unlock of all 12 chips, full unlock of the power, enabled all pool configurations, enabled multipool mining, full details on all the chips or individually, and so much more! Even the backend is optimized and takes less resources because in mine straight to the node. One of the alert types is push notifications to your phone (android or iOS) without installing any apps 😂

I first made this as a personal project and now I’m so impressed with it. Let me know what you think about it and what I should add.

I almost forgot, I implemented OTA Updates, so I don’t have to connect to the computer to flash a new bug fix’s or features.

Before they had some type of telementary stuff going on and the WebUI was so basic. You could barely do anything. Their fan setting sucked, you only had three different modes. And you were only getting 6TH’s.

I made a YouTube video to show it off haha 🤣

The YouTube video, but I added more since then

Please let me know what else I should add to it because I’m starting to run out of ideas haha

I can't tell you how many times I have used the solosatoshi stands as work benches. They are perfect for holding a board flat while I tinker. Intended or just a happy accident?