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SoloBlocks Block #445,574
CKPool Solo
Wednesday, December 28, 2016 · 23:30 UTC · Dec 28, 2016
BLOCK #445,574
Total Block Reward
13.0739 BTC
≈ $883,537 USD
Block Height
445,574
in the Bitcoin chain
Found By
CKPool Solo
Solo mining pool
Difficulty
0.3T
network difficulty
Miner Hashrate
241.3 TH/s (est. from 2 blocks)
Small mining farm
Miner Luck
1 in 4,229,996
per-block odds
Winning Nonce
1,130,955,734
26.33% through search space
Transactions
1,837
974.9 KB block
Fees Collected
0.5739 BTC
4.39% of reward
Block Interval
7.9 min
126.6% luck (⚡ fast)
🎓 Explain Like I'm 10

Bitcoin mining is a giant lottery. Every ~10 minutes, one miner wins 13.0739 Bitcoin — worth $883,537 today.


On Dec 28, 2016, this miner using a Small mining farm found block #445,574. 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
Miner's share of total Bitcoin hashrate 0.000024%
Miner: 241.3 TH/s vs Network: 1020.75 EH/s
Miner hashrate (Estimated from block frequency (2 blocks found))
241.3 TH/s
Bitcoin network hashrate
1020.75 EH/s
Chance of winning each block
1 in 4,229,996
Expected wait time at this hashrate
80.5 years
Expected blocks to find 1 solo block
4,229,996 blocks
Probability per block = miner_hashrate / network_hashrate
  = 241.3 TH/s / 1020.75 EH/s
  = 1 in 4,229,996

Expected wait = blocks_to_win × 10 minutes
  = 4,229,996 × 10 min = 80.4 years
⛏️ Miner Profile
🏭
Pool
CKPool Solo
Hashrate (24h)
241.3 TH/s (est. from 2 blocks)
Estimated from block frequency (2 blocks found)
Active workers
0
Solo blocks found (tracked)
2 blocks
🏭
Small mining farm
50–500 machines in a dedicated location
🎯 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 1,130,955,734 was the winner.
01,130,955,734 ← winner4,294,967,295
26.33%
1,130,955,734
Winning Nonce
26.33%
Through range
3,164,011,561
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 ~0ms.
💸 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 (95.61%)
Fixed reward, halves every 4 years
Fees — 0.573942 BTC (4.39%)
From 1,837 transactions in this block
12.500 BTC
Subsidy
0.5739 BTC
Tx Fees
31,243 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 — 2 Blocks Found
26.7177
Total BTC earned
$1,805,585
Total USD value
248 days
Avg between finds
#445,574THIS BLOCK
Dec 28, 2016 · 23:30 UTC · CKPool Solo
13.0739 BTC ≈ $883,537
Sep 3, 2017 · 09:17 UTC · CKPool Solo
13.6438 BTC ≈ $922,048
⏱ 248 days since previous find
📊 At 241.3 TH/s hashrate, statistically expected to find a block every 80 years. Actual average: 248 days. 🍀 Running hot!
🔍 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: 3KdX'<]XRckpool/solo.ckpool.org/
📡
Hashrate from Estimated from block frequency (2 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 Timing & Luck
126.6%
Block Luck
⚡ Lucky
Time since prev block
7.9 min
Expected (10 min avg)
600 sec
Luck score
126.6% ↑
💡 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 #445,574
December 28, 2016 · 23:30 UTC
Reward13.0739 BTC
Value$883,537
PoolCKPool Solo
Winning Nonce1,130,955,734
Nonce Position26.33% of range
Transactions1,837
Fees Captured0.5739 BTC
SOLOBLOCKS.IO · Bitcoin Solo Mining Tracker
Want to Try Your Luck?
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