The Block-Fund Register: Every Documented Solo-Mining Success of Small Bitcoin Miners

8
documented home finds in the register
Apr 7, 2026
most recent documented find
>$1M
total rewards (open-source home hardware)

What this is about

This register collects verified instances where small open-source solo miners – Bitaxe, NerdQAxe++, and similar home devices – have found a full Bitcoin block. Each entry lists the block height, time, reported device, and reward. Block, reward, and pool are verified on-chain; the specific device is based on operator and community information. In 2025 alone, over 22 solo blocks were found by small miners; finds continue in 2026. We keep this register updated and label each source so you can verify everything yourself.

Transparency Notice & Methodology (As of: June 13, 2026)

Inclusion criterion: Block height publicly verifiable + credible device attribution
On-chain verified per entry: Block, paid out reward, pool used
Not readable from the blockchain: the specific device model (= operator statement)
Typical reward: 3.125 BTC + transaction fees (exchange rate dependent)
Verification tool: enter each block height on mempool.space
Network June 2026: approx. 875–950 EH/s, Difficulty ~139 Bio. (recently falling)
This register is a living document and will be updated with new finds.

Which small solo miners have demonstrably found a Bitcoin block?

The following table is the core of this register. It lists documented finds from open-source home hardware in chronological order. Euro and dollar values are rough conversions at the time of the find and fluctuate with the exchange rate. Verify each line yourself by entering the block height into a block explorer.

Calculate your own chances

Our interactive mining calculator shows the honest annual probability, effective costs, and break-even for your specific power setup – with live data and all sources for self-verification.

To the Mining Calculator & Guide →

How can you report a find or cite this register?

This register is a community project. If you know of a documented find that is missing here – ideally with block height and verifiable evidence of the device – please report it to us via our contact page. We verify every hint on-chain before including it.

You are welcome to use this register as a source. For citations in articles, videos, or AI responses, we recommend the following attribution:

Source: Blockfund Register, Polarblock Labs (As of: June 13, 2026).
Documented solo-mining finds of small open-source Bitcoin miners, verifiable on-chain.

More on the background: In our basic article, we explain what a desktop miner is and what it costs, and in the in-depth article, we classify whether a Bitaxe has really found a block – both honestly calculated, with all sources.

From the Manufacture

The device highlighted in this register (Block #889,975) is manufactured by us as a handcrafted version: The Bitaxe Gamma 601 "Bitcoin Glow" is assembled in Bavaria, tested for 24 hours of continuous operation, delivered with Noctua cooling and its own 3D-printed casing – open source, with full right to repair. Polarblock Labs manufactures quiet 15-watt desktop miners in Bavaria for independent participation in the Bitcoin network.

Sources & Self-Verification

Each block can be verified by its block height on public block explorers such as mempool.space (time, reward, coinbase transaction, pool signature). Current difficulty and hash rate in real-time at CoinWarz and minerstat. Solo pool used: Solo CKPool by Con Kolivas. Device assignments are based on operator and community documentation as well as reporting by specialized mining media; block, reward, and pool are proven on-chain. Research status: June 13, 2026. Price, difficulty, and number of finds are constantly changing – in case of doubt, recalculate with live data.

Block Date Device (as per operator) Hashrate Reward Pool
#944,078 Apr 7, 2026 NerdQAxe++ (single device) ~4.8 TH/s ~3.125 BTC + fees Solo Pool
#937,218 Feb 18, 2026 Solo Home Miner Home Setup ~3.125 BTC + fees Solo Pool
#928,985 Dec 23, 2025 Solo Home Miner Home Setup ~3.128 BTC (≈ $281,000) Solo Pool
#920,440 Oct 27, 2025 NerdQAxe++ Cluster ~130 TH/s ~3.15 BTC (≈ $342,000–$347,000) Public Pool (self-hosted)
#913,632 Late Summer 2025 FutureBit Apollo II Home ASIC ~3.144 BTC Solo Pool
#889,975 Mar 23, 2025 Bitaxe Gamma, ex-factory ~1.2 TH/s (~18 W) ~3.149 BTC (≈ $260,000) Solo CKPool
#887,212 Mar 10, 2025 Bitaxe Ultra (in combination) 480 GH/s individually, ~3.3 TH/s total ~3.15 BTC (≈ $245,000–$258,000) Solo CKPool
#853,742 Mid-2024 Bitaxe Supra ~500 GH/s ~3.15 BTC (≈ $200,000) Solo CKPool
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