lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #86

open · address only

8.6 BTC nominal285 candidate keys

Where it sits on the line

Puzzles #74–#98: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #86 is highlighted. The line sits at 2^69. #74 · 2^73 #75 · 2^38 #76 · 2^75 #77 · 2^76 #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
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 285 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
1K3x5L6G57Y494fDqBfrojD28UJv4s5JcK
mempool.space Blockstream
HASH160
c60111ed3d63b49665747b0e31eb382da5193535
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
285 → 286 − 1
start0x2000000000000000000000
end0x3fffffffffffffffffffff
Interval size38685626227668133590597632 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.