lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #100

found · spent

10 BTC nominal299 candidate keys

Where it sits on the line

Puzzles #88–#112: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #100 is highlighted. The line sits at 2^69. #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 #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
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 250.5 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
1KCgMv8fo2TPBpddVi9jqmMmcne9uSNJ5F
mempool.space Blockstream
Known public key
03d2063d40402f030d4cc71331468827aa41a8a09bd6fd801ba77fb64f8e67e617
HASH160
c7a7b23f6bd98b8aaf527beb724dda9460b1bc6e
Search class
historical
The output has been spent. Dates and labels are catalog attributions, not audited identities.
Candidate interval
299 → 2100 − 1
start0x8000000000000000000000000
end0xfffffffffffffffffffffffff
Interval size633825300114114700748351602688 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
584436
Evidence
On-chain
Catalog label
125CWt
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: 36.98%

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.

000000000000000000000000000000000000000af55fc59c335c8ec67ed24826

Mentioned in the atlas

Where #100 comes up in the room pages. rooms 1 · mentions 1

Scale

Method

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