SoloBlocks › CKPool Solo › Block #519,311
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CKPool Solo
Saturday, April 21, 2018 · 21:00 UTC · 8 yr ago

BLOCK #519,311

🔗 0000000000000000001381004f0bf7b0578189d6853cd8af5098994095213e38
Total Block Reward
12.5062 BTC
≈ $1,063,031 USD
Block Height
519,311
in the Bitcoin chain
Found By
CKPool Solo
Solo mining pool
Difficulty
3.8T
network difficulty
Miner Hashrate
3.1 PH/s (est. from 4 blocks)
Large mining farm
Miner Luck
1 in 334,381
per-block odds
Winning Nonce
2,903,091,924
67.59% through search space
Transactions
33
22.3 KB block
Fees Collected
0.0062 BTC
0.05% of reward
Block Interval
12 sec
5000% luck (⚡ fast)
🎓 Explain Like I'm 10

Bitcoin mining is a giant lottery. Every ~10 minutes, one miner wins 12.5062 Bitcoin — worth $1,063,031 today.


On Apr 21, 2018, this miner using a Large mining farm found block #519,311. They were mining alone — no big pool, just their own machines competing directly against the entire Bitcoin network (1023.9 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
Miner's share of total Bitcoin hashrate 0.000299%
Miner: 3.1 PH/s vs Network: 1023.9 EH/s
Miner hashrate (Estimated from block frequency (4 blocks found))
3.1 PH/s
Bitcoin network hashrate
1023.9 EH/s
Chance of winning each block
1 in 334,381
Expected wait time at this hashrate
6.4 years
Expected blocks to find 1 solo block
334,381 blocks
Probability per block = miner_hashrate / network_hashrate
  = 3.1 PH/s / 1023.9 EH/s
  = 1 in 334,381

Expected wait = blocks_to_win × 10 minutes
  = 334,381 × 10 min = 6.4 years
⛏️ Miner Profile
🏗️
Pool
CKPool Solo
Hashrate (24h)
3.1 PH/s (est. from 4 blocks)
Estimated from block frequency (4 blocks found)
Active workers
0
Solo blocks found (tracked)
4 blocks
🏗️
Large mining farm
Thousands of ASICs, industrial power
🎯 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 2,903,091,924 was the winner.
02,903,091,924 ← winner4,294,967,295
67.59%
2,903,091,924
Winning Nonce
67.59%
Through range
1,391,875,371
Numbers after
💡 The miner also tried different extra nonce values — restarting from 0 each time the full 4.29B range was exhausted. A modern ~200 TH/s ASIC runs through all 4.29 billion nonces in about 0.02 ms — some 47,000 times every second.
💸 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 (99.95%)
Fixed reward, halves every 4 years
Fees — 0.006247 BTC (0.05%)
From 33 transactions in this block
12.500 BTC
Subsidy
0.0062 BTC
Tx Fees
18,930 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 — 4 Blocks Found
56.8411
Total BTC earned
$4,831,493
Total USD value
55 days
Avg between finds
#493,496
Nov 7, 2017 · 17:09 UTC · CKPool Solo
15.2788 BTC ≈ $1,298,697
#499,241
Dec 14, 2017 · 11:14 UTC · CKPool Solo
16.3922 BTC ≈ $1,393,341
⏱ 37 days since previous find
#513,974
Mar 17, 2018 · 18:22 UTC · CKPool Solo
12.6638 BTC ≈ $1,076,424
⏱ 93 days since previous find
#519,311THIS BLOCK
Apr 21, 2018 · 21:00 UTC · CKPool Solo
12.5062 BTC ≈ $1,063,031
⏱ 35 days since previous find
📊 At 3.1 PH/s hashrate, statistically expected to find a block every 6 years. Actual average: 55 days. 🍀 Running hot!
⏱ Block Timing & Luck
5000%
Block Luck
🍀 Very lucky!
Time since prev block
12 sec
Expected (10 min avg)
600 sec
Luck score
5000% ↑
💡 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.
✅ Verify This Block
mempool.space
Full block details, transactions, fee rate
→
blockstream.info
Independent block explorer
→
blockchain.com
Alternative verification source
→
Miner's wallet
All transactions for this address
→
🔍 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: Zx9sH[Zckpool/solo.ckpool.org/
📡
Hashrate from Estimated from block frequency (4 blocks found)
We query the pool's public API using the miner's wallet address to get their actual submitted hashrate.
❓ 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 Certificate
⚡ Solo Block Certificate
BLOCK #519,311
April 21, 2018 · 21:00 UTC
Reward12.5062 BTC
Value$1,063,031
PoolCKPool Solo
Winning Nonce2,903,091,924
Nonce Position67.59% of range
Transactions33
Fees Captured0.0062 BTC
SOLOBLOCKS.IO · Bitcoin Solo Mining Tracker
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