lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #90

found · spent

9 BTC nominal289 candidate keys

Where it sits on the line

Puzzles #78–#102: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #90 is highlighted. The line sits at 2^69. #78 · 2^77 #79 · 2^78 #80 · 2^40.5 #81 · 2^80 #82 · 2^81 #83 · 2^82 #84 · 2^83 #85 · 2^43 #86 · 2^85 #87 · 2^86 #88 · 2^87 #89 · 2^88 #90 · 2^45.5 #91 · 2^90 #92 · 2^91 #93 · 2^92 #94 · 2^93 #95 · 2^48 #96 · 2^95 #97 · 2^96 #98 · 2^97 #99 · 2^98 #100 · 2^50.5 #101 · 2^100 #102 · 2^101
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 245.5 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
1L12FHH2FHjvTviyanuiFVfmzCy46RRATU
mempool.space Blockstream
Known public key
035c38bd9ae4b10e8a250857006f3cfd98ab15a6196d9f4dfd25bc7ecc77d788d5
HASH160
d06b6e206691295ec345782d7ea0686969d8674b
Search class
historical
The output has been spent. Dates and labels are catalog attributions, not audited identities.
Candidate interval
289 → 290 − 1
start0x20000000000000000000000
end0x3ffffffffffffffffffffff
Interval size618970019642690137449562112 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
583350
Evidence
On-chain
Catalog label
pikachunakapika
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: 40.23%

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.

000000000000000000000000000000000000000002ce00bb2136a445c71e85bf

Mentioned in the atlas

Where #90 comes up in the room pages. rooms 1 · mentions 1

Scale

Method

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