lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #142

open · address only

14.2 BTC nominal2141 candidate keys

Where it sits on the line

Puzzles #130–#154: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #142 is highlighted. The line sits at 2^69. #130 · 2^65.5 #131 · 2^130 #132 · 2^131 #133 · 2^132 #134 · 2^133 #135 · 2^68 #136 · 2^135 #137 · 2^136 #138 · 2^137 #139 · 2^138 #140 · 2^70.5 #141 · 2^140 #142 · 2^141 #143 · 2^142 #144 · 2^143 #145 · 2^73 #146 · 2^145 #147 · 2^146 #148 · 2^147 #149 · 2^148 #150 · 2^75.5 #151 · 2^150 #152 · 2^151 #153 · 2^152 #154 · 2^153
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 2141 search steps — above the line (269).

No puzzle above the line has been found yet.

Model: range scan. Every candidate key in the interval is hashed and compared with the address.

How the work is estimated

Record

P2PKH address
15MnK2jXPqTMURX4xC3h4mAZxyCcaWWEDD
mempool.space Blockstream
HASH160
2fcea55e6d027a2ba7c7ebe95eedf47766730fe2
Search class
address-only
No public key on record: the only route is to hash candidate keys and compare them with the address (HASH160).
Candidate interval
2141 → 2142 − 1
start0x200000000000000000000000000000000000
end0x3fffffffffffffffffffffffffffffffffff
Interval size2787593149816327892691964784081045188247552 scalars. Exact BigInt bounds, not a floating estimate.

Snapshot 2 Oct 2026. The reward is the catalog's nominal allocation (N × 0.1 convention from 2023-04-16; earlier spends predate it), not a live balance. A key that matches the address proves the math, not that the coins are still there: check an explorer. Missing fields are omitted, not invented.

Method

Without a catalogued public key the work is sequential HASH160 comparison across the interval, so it grows with the interval size.