lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #127

open · address only

12.7 BTC nominal2126 candidate keys

Where it sits on the line

Puzzles #115–#139: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #127 is highlighted. The line sits at 2^69. #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 #137 · 2^136 #138 · 2^137 #139 · 2^138
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 2126 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
1G6EFyBRU86sThN3SSt3GrHu1sA7w7nzi4
mempool.space Blockstream
HASH160
a58708aa98ad35c889bb36d8049bf9e9cacfd02a
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
2126 → 2127 − 1
start0x40000000000000000000000000000000
end0x7fffffffffffffffffffffffffffffff
Interval size85070591730234615865843651857942052864 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.