lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #105

found · spent

10.5 BTC nominal2104 candidate keys

Where it sits on the line

Puzzles #93–#117: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #105 is highlighted. The line sits at 2^69. #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 #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
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 253 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
1CMjscKB3QW7SDyQ4c3C3DEUHiHRhiZVib
mempool.space Blockstream
Known public key
03bcf7ce887ffca5e62c9cabbdb7ffa71dc183c52c04ff4ee5ee82e0c55c39d77b
HASH160
7c957db6fdd0733bb83bc6d6d747711263ba50b0
Search class
historical
The output has been spent. Dates and labels are catalog attributions, not audited identities.
Candidate interval
2104 → 2105 − 1
start0x100000000000000000000000000
end0x1ffffffffffffffffffffffffff
Interval size20282409603651670423947251286016 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
596167
Evidence
On-chain
Catalog label
57fe
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: 43.39%

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.

000000000000000000000000000000000000016f14fc2054cd87ee6396b33df3

Mentioned in the atlas

Where #105 comes up in the room pages. rooms 1 · mentions 1

Scale

Method

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