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#172742#172744
#172742#172749

Block #172,743

0000000000000a4dcdea6a601f68163211899a6eb95423d8d224c1c6356d1bdf

Likely solo-mined
Strong Solo Candidate mempool.space
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Why this block matters

This block shows very strong signals of solo mining — no shared-pool payout pattern was detected and the confidence score is high.

  • No shared-pool signature or coinbase tag detected
  • Payout address has never received a block reward before — consistent with solo mining
  • Block contains a single transaction — a pattern common in solo-mined blocks
  • Found 8m 17s after the previous solo candidate (#172,742)

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This block is classified as a strong solo candidate. Solo mining is lottery-like — even small miners can participate, but finding a block is statistically rare.

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Block Data

Time25 Mar 2012, 02:30 UTCConfirmations793,658Transactions1Size217 bytesWeight868 WU

Reward

Subsidy + Fees50.00000 BTCFees onlyN/AValue at time$264BTC price$5Mining poolNot identified

Detection

Likely solo-mined
Final score
95/100
Base score85History adj.+10Interval adj.0Pool signatureNone detected

no pool signature; unknown coinbase pattern; single tx block; fresh payout address (DB); no reuse 24h; no reuse 7d; low fees (0 sats); history_adj=+10 (first_time_winner)

Network at mining time

Network hashrateN/A

Against N/A of total network hashrate, the odds of a solo miner winning are extremely low — making this block remarkable.

Detection Signals

No pool signature+40
New address+10
No reuse (7d)+5
No reuse (24h)+5
Single transaction+10
Address history+10
Final score95/100

Address History

Historical wins0Previous win—Interval since lastFirst win everWins last 30d0
RecurrenceFirst win
IntervalNo prior win

This address has never received a block reward before — consistent with solo mining.

Coinbase Message (hex — non-printable)
04 87 32 0b 1a 03 38 f4 09