lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #124

open · address only

12.4 BTC nominal2123 candidate keys

Where it sits on the line

Puzzles #112–#136: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #124 is highlighted. The line sits at 2^69. #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 #128 · 2^127 #129 · 2^128 #130 · 2^65.5 #131 · 2^130 #132 · 2^131 #133 · 2^132 #134 · 2^133 #135 · 2^68 #136 · 2^135
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 2123 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
1BkkGsX9ZM6iwL3zbqs7HWBV7SvosR6m8N
mempool.space Blockstream
HASH160
75f74467ce7214f1767406d5ed12012aa523c48e
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
2123 → 2124 − 1
start0x8000000000000000000000000000000
end0xfffffffffffffffffffffffffffffff
Interval size10633823966279326983230456482242756608 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.