The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →No verified evidence in the cited reporting shows that one group currently controls 51% of Bitcoin’s mining power. Recent figures instead attribute large shares of block production to several separately named mining pools. That concentration can matter for Bitcoin’s security, but pool labels do not prove common ownership or coordination.
What the recent figures show
The available 2026 reports describe dated pool-label snapshots, not a verified 51% share held by one owner or coordinated group.
| Observation | What was reported | What it establishes |
|---|---|---|
| June 23, 2026 snapshot | Bitcoin.com News reported that Foundry Digital, AntPool, ViaBTC, and F2Pool together exceeded 70%, citing miningpoolstats.stream. | A combined share attributed to four pool labels in that snapshot—not that any one group controlled 51%. |
| One-week sample ending September 30, 2026 | Satoshi Gazette Data Desk counted 1,024 blocks. Foundry USA, AntPool, and F2Pool labels accounted for 61.72%; its estimated combined hashrate interval was 58–65% at 95% confidence based on sampling alone. | A sample-based estimate for three labels, not proof of common ownership, coordination, or control of all participating machines. |
| Six-month observation ending December 30, 2024 | The Cambridge Centre for Alternative Finance published a historical pool-operator share observation in 2025. | Historical context only; it does not establish a current share. |
Pool-share numbers depend on the observation window and on how blocks are attributed to labels. A chart of recent block production can indicate which labels found blocks; it does not, by itself, identify who owns the mining equipment, where it is located, whether operators are coordinating, or how quickly miners could redirect their work.
How a 51% attack could threaten Bitcoin
Bitcoin miners repeatedly hash block headers. Proof of work makes replacing older blocks costly because a competing history must accumulate substantial work. The Bitcoin Developer Guide explains: “Only if you acquired a majority of the network’s hashing power could you reliably execute such a 51 percent attack against transaction history (although, it should be noted, that even less than 50% of the hashing power still has a good chance of performing such attacks).”
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- ⚡ Efficient Home ASIC Miner – Up to 1.1 TH/s hashrate with just 18W power consumption (15 J/TH), perfect for home or small office use.
- 🇪🇺 Made in Europe – Designed and manufactured in Europe with premium components for reliability and long-term performance.
- 🔧 BM1370 ASIC Chip (Antminer S21 Pro) – Same chip used in the Antminer S21 Pro for professional-grade mining power in a compact, open-source form.
- 📡 Wi-Fi & USB-C Connectivity – No monitor or keyboard required – configure and monitor easily via web interface
- 🎁 Complete Kit Included – Delivered fully assembled with EU/UK/US 5V 6A power supply, premium fan, 3D-printed stand, and OLED display.
With a majority of hashing power, an attacker could try to build a competing chain that excludes or reorders transactions, delays confirmations, or reverses recent transactions. One possible use is double-spending the attacker’s own coins: spend them in a transaction, then attempt to replace that recent history with a chain in which the transaction did not occur. A majority makes such an attack more reliable; it does not guarantee success in every circumstance.
What a majority attacker cannot do
A majority of mining power is not the same as control over every Bitcoin function or every user’s funds. The SEC-hosted issuer filing describes risks including preventing transactions from being confirmed and reversing recent transactions. It also says an attacker could not generate new bitcoin or transactions, or spend another person’s bitcoin without access to that person’s private keys.
Rank #2
- Optimized Solo Mining Performance – Powered by ESP32-D0WD-V3 dual-core MCU and 2.8-inch 240*320 intelligent touchscreen, this board delivers a hashrate of up to 1060KH/s for Bitcoin solo mining (lottery mode). The pre-loaded firmware maximizes efficiency, allowing you to experience the thrill of block finding without expensive hardware.
- True Standalone Operation – No computer required! Built-in WiFi (802.11 b/g/n) and Bluetooth let it connect directly to the network. Simply power via 5V DC (Type-C or Micro USB) and start mining independently. The vivid display shows real-time stats: hash rate, network difficulty, BTC price, job counters, and share acceptance – all at a glance.
- Rich Visual Monitoring & LAN Management – The intuitive interface displays local IP, best difficulty, worker count, total LAN hashrate, and more. Supports multi-device monitoring via NMController software, making it easy to track all your miners on the same network.
- Extensive I/O for Custom Projects – Features RGB LED, TF card slot, temperature/humidity interface, SOP16, extended IO, speaker, and reset/boot buttons. Ideal for developers to integrate sensors, experiment with IoT, or build custom mining dashboards. Example programs and development tools are provided to accelerate your projects.
- Safe, Wide Power Input & Compact Design – Accepts DC 5-20V (0-6A) via 4P 1.25 power base or USB ports, with built-in voltage/current monitoring for stable operation. Compact dimensions (86×50×13.5mm) and wide operating temperature (-20~70°C) allow flexible placement in home labs or industrial environments.
Why pool share is not the same as ownership
Mining pools let participants combine hashing resources so they find blocks more often and share proceeds roughly in proportion to the hashing power they contribute. As the Bitcoin Developer Guide’s explanation of pooled mining notes, this can give participants smaller, less variable payments than solo mining.
That arrangement makes pool labels useful for tracking block production, but a pool’s reported share does not show that its operator owns all machines pointed at it. Participating miners may be separate owners. The recent sample’s labels also do not establish geography, coordination, or how readily miners can switch pools. A claim about one group controlling the network therefore needs more than the combined share of several pool labels.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesQuick Recap
Best Value
- SLOT - 6/8/12 GPU slots, support 2 ATX power supplies.
- MATERIAL - The open air mining frame case made up of the highest quality stainless steel material, strong, durable and available. Fully protecting your GPU and eectronic device.
- PERFECT DESIGN - Professional design for mining rig frame, accelerating the air convection, super cooling design for heat dissipation. Enough space reserved between the graphics cards.
- EASY TO INSTALL - Easy to install and strong structure. Keep all cables clean and organized, along with everything in your mining machine.
- NEED TO ASSEMBLE BY YOURSELF - For installation steps, please refer to the user manual. The Frame Only, Not includes Fans or other CPU, GPU, PSU, Motherboards, Cables. If you are not 100% satistifed with this Miner, please feel free to contact us, we will offer you a satisfactory soluiton within 24 hours.
Rank #4
- 1.2TH/s Hashrate — Bitaxe Gamma 601 Bitcoin Miner Powered by BM1370 ASIC chip for efficient SHA-256 Bitcoin mining.
- Low Power Consumption — Bitaxe Gamma 601 1.2TH/S Solo Miner ASIC Miner Only around 15–17W, ideal for desktop and home mining setups.
- 🔓 OPEN-SOURCE BITCOIN MINER – Built on the open-source Bitaxe platform and running AxeOS firmware, this miner gives users full control over configuration, monitoring, firmware updates, and customization. Ideal for developers, makers, and Bitcoin enthusiasts.
- 📶 EASY WI-FI SETUP WITH WEB INTERFACE – Features built-in Wi-Fi and an intuitive browser-based AxeOS dashboard. Configure mining pools, adjust frequency and voltage, monitor hashrate, and view system status without additional software.
- Compact Desktop Design — Small, quiet, and perfect for crypto enthusiasts, collectors, and hobby miners.
Rank #3
How to assess a concentration claim
- Check the time window. A one-week sample, a single-day snapshot, and a multi-month observation answer different questions.
- Identify the quantity. Block-label counts, estimated hashrate, and ownership or control of mining equipment are not interchangeable measures.
- Check attribution. Find out how blocks were assigned to a pool label and whether the figure is a direct count or an estimate.
- Separate pools from groups. Adding several named pools together does not establish that one entity controls them or that they are coordinating.
- Read uncertainty and response limits. Sampling intervals describe statistical uncertainty, while miner mobility and evidence of coordination are separate questions.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
