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SoloBlocks Block #618,616
CKPool Solo
Sunday, February 23, 2020 · 08:13 UTC · Feb 23, 2020
BLOCK #618,616
Total Block Reward
12.6763 BTC
≈ $856,666 USD
Block Height
618,616
in the Bitcoin chain
Found By
CKPool Solo
Solo mining pool
Difficulty
15.5T
network difficulty
Miner Hashrate
Unknown
Unknown device
Miner Luck
unknown
per-block odds
Winning Nonce
149,323,820
3.48% through search space
Transactions
2,448
1180 KB block
Fees Collected
0.1763 BTC
1.39% of reward
Block Interval
16.7 min
59.9% luck (🐢 slow)
🎓 Explain Like I'm 10

Bitcoin mining is a giant lottery. Every ~10 minutes, one miner wins 12.6763 Bitcoin — worth $856,666 today.


On Feb 23, 2020, this miner using mining hardware found block #618,616. 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 149,323,820 was the winner.
0149,323,820 ← winner4,294,967,295
3.48%
149,323,820
Winning Nonce
3.48%
Through range
4,145,643,475
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 — 12.5000 BTC (98.61%)
Fixed reward, halves every 4 years
Fees — 0.176321 BTC (1.39%)
From 2,448 transactions in this block
12.500 BTC
Subsidy
0.1763 BTC
Tx Fees
7,203 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
#618,616THIS BLOCK
Feb 23, 2020 · 08:13 UTC · CKPool Solo
12.6763 BTC ≈ $856,666
🔍 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: xp"4R^4l^/ckpool/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
59.9%
Block Luck
😤 Unlucky
Time since prev block
16.7 min
Expected (10 min avg)
600 sec
Luck score
59.9% ↓
💡 Slow block — the network took longer than average. This miner kept hashing through a tough stretch. Luck > 100% means a faster-than-expected find.
🎖 Block Certificate
⚡ Solo Block Certificate
BLOCK #618,616
February 23, 2020 · 08:13 UTC
Reward12.6763 BTC
Value$856,666
PoolCKPool Solo
Winning Nonce149,323,820
Nonce Position3.48% of range
Transactions2,448
Fees Captured0.1763 BTC
SOLOBLOCKS.IO · Bitcoin Solo Mining Tracker
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