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SoloBlocks Block #721,575
CKPool Solo
Thursday, February 3, 2022 · 01:17 UTC · Feb 3, 2022
BLOCK #721,575
Total Block Reward
6.2768 BTC
≈ $533,526 USD
Block Height
721,575
in the Bitcoin chain
Found By
CKPool Solo
Solo mining pool
Difficulty
26.6T
network difficulty
Miner Hashrate
Unknown
Unknown device
Miner Luck
unknown
per-block odds
Winning Nonce
2,208,771,334
51.43% through search space
Transactions
826
547.3 KB block
Fees Collected
0.0268 BTC
0.43% of reward
Block Interval
5.6 min
177.5% luck (⚡ fast)
🎓 Explain Like I'm 10

Bitcoin mining is a giant lottery. Every ~10 minutes, one miner wins 6.2768 Bitcoin — worth $533,526 today.


On Feb 3, 2022, this miner using mining hardware found block #721,575. They were mining alone — no big pool, just their own machines competing directly against the entire Bitcoin network (1020.75 EH/s total).


Winning solo means keeping 100% of the reward — no pool fees, no sharing. High risk, high reward.

🎲 The Odds — Show Your Work

Hashrate unknown for this miner — odds cannot be calculated. They found a single block; their true hashrate is a mystery.

⛏️ Miner Profile
⛏️
Pool
CKPool Solo
Hashrate (24h)
Unknown
unknown
Active workers
0
Solo blocks found (tracked)
1 block
🎯 The Winning Number — Nonce Visualizer
To mine a block, the miner cycles through numbers from 0 to 4,294,967,295 at billions per second, checking if each produces a valid hash. Number 2,208,771,334 was the winner.
02,208,771,334 ← winner4,294,967,295
51.43%
2,208,771,334
Winning Nonce
51.43%
Through range
2,086,195,961
Numbers after
💡 The miner also tried different extra nonce values — restarting from 0 each time the full 4.29B range was exhausted. Modern ASICs can cycle through the entire nonce space in ~4294967.3ms.
💸 Fee Breakdown — What the Miner Captured
The block reward has two parts: a fixed subsidy set by Bitcoin protocol, plus transaction fees paid by users who wanted their transactions included.
Subsidy — 6.2500 BTC (99.57%)
Fixed reward, halves every 4 years
Fees — 0.026775 BTC (0.43%)
From 826 transactions in this block
6.250 BTC
Subsidy
0.0268 BTC
Tx Fees
3,242 sat
Avg fee/tx
⚡ Solo miners keep 100% of fees — no pool takes a cut. In pool mining, the fee revenue is also split among all pool members.
🏆 Miner Block History — 1 Block Found
#721,575THIS BLOCK
Feb 3, 2022 · 01:17 UTC · CKPool Solo
6.2768 BTC ≈ $533,526
🔍 How We Know This
⛓️
Block is on the Bitcoin blockchain
The block hash starts with many zeros — proof of work that cannot be faked. It's in Bitcoin's immutable history forever.
🏷️
Pool identified from coinbase tag
The coinbase transaction contains a text signature: -a}Wq-uckpool/solo.ckpool.org/
Hashrate unknown
This pool doesn't expose per-miner API data. We can't verify the exact hashrate — only that they found the block.
❓ What is Solo Mining?

In pool mining, thousands of miners work together and split the reward every time they find a block.


In solo mining, you work alone. You keep 100% of the reward — but you might go years without finding anything.


The Bitcoin network produces ~52,560 blocks per year. Each block currently pays 3.125 BTC.


Every solo block is proof that small miners can still win. 🎉

⏱ Block Timing & Luck
177.5%
Block Luck
🍀 Very lucky!
Time since prev block
5.6 min
Expected (10 min avg)
600 sec
Luck score
177.5% ↑
💡 Fast block — the network found this block faster than average. The miner had a shorter window to solve it. Luck > 100% means a faster-than-expected find.
🎖 Block Certificate
⚡ Solo Block Certificate
BLOCK #721,575
February 3, 2022 · 01:17 UTC
Reward6.2768 BTC
Value$533,526
PoolCKPool Solo
Winning Nonce2,208,771,334
Nonce Position51.43% of range
Transactions826
Fees Captured0.0268 BTC
SOLOBLOCKS.IO · Bitcoin Solo Mining Tracker
Want to Try Your Luck?
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