lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #115

found · spent

11.5 BTC nominal2114 candidate keys

Where it sits on the line

Puzzles #103–#127: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #115 is highlighted. The line sits at 2^69. #103 · 2^102 #104 · 2^103 #105 · 2^53 #106 · 2^105 #107 · 2^106 #108 · 2^107 #109 · 2^108 #110 · 2^55.5 #111 · 2^110 #112 · 2^111 #113 · 2^112 #114 · 2^113 #115 · 2^58 #116 · 2^115 #117 · 2^116 #118 · 2^117 #119 · 2^118 #120 · 2^60.5 #121 · 2^120 #122 · 2^121 #123 · 2^122 #124 · 2^123 #125 · 2^63 #126 · 2^125 #127 · 2^126
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 258 search steps — below the line (269).

Every puzzle below the line has been found.

Model: kangaroo. The public key has been on chain since 2019, so the square-root shortcut applies: about 2 × 2(N−1)/2 group operations.

How the work is estimated

Record

P2PKH address
1NLbHuJebVwUZ1XqDjsAyfTRUPwDQbemfv
mempool.space Blockstream
Known public key
0248d313b0398d4923cdca73b8cfa6532b91b96703902fc8b32fd438a3b7cd7f55
HASH160
ea0f2b7576bd098921fce9bfebe37f6383e639a4
Search class
historical
The output has been spent. Dates and labels are catalog attributions, not audited identities.
Candidate interval
2114 → 2115 − 1
start0x40000000000000000000000000000
end0x7ffffffffffffffffffffffffffff
Interval size20769187434139310514121985316880384 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.

Solution record

Catalog date
Block
634986
Evidence
On-chain
Catalog label
zielar
A spend proves key control, not a forum identity.
Transactions
mempool.space tx Solve transaction · Blockstream

Where the key sat in its range

Published position in range: 51.49%

0% · start of rangeend of range · 100%

Published historical scalar (already public)

This hex scalar is already in the public puzzle corpus. It is historical evidence, not a live key to import. This page does not produce WIF and does not handle secret material.

0000000000000000000000000000000000060f4d11574f5deee49961d9609ac6

Mentioned in the atlas

Where #115 comes up in the room pages. rooms 1 · mentions 1

Scale

Method

Historical record. Method notes for open puzzles live on the method page.