lotterypuzzle atlas

Bitcoin Puzzle record

Bitcoin Puzzle #70

found · spent

7 BTC nominal269 candidate keys

Where it sits on the line

Puzzles #58–#82: search work One column per puzzle; height is the base-2 logarithm of the search steps. Puzzle #70 is highlighted. The line sits at 2^69. #58 · 2^57 #59 · 2^58 #60 · 2^59 #61 · 2^60 #62 · 2^61 #63 · 2^62 #64 · 2^63 #65 · 2^33 #66 · 2^65 #67 · 2^66 #68 · 2^67 #69 · 2^68 #70 · 2^35.5 #71 · 2^70 #72 · 2^71 #73 · 2^72 #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
  • found
  • open · address only
  • open · public key on chain
  • the line · 269

This puzzle needs about 235.5 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
19YZECXj3SxEZMoUeJ1yiPsw8xANe7M7QR
mempool.space Blockstream
Known public key
0290e6900a58d33393bc1097b5aed31f2e4e7cbd3e5466af958665bc0121248483
HASH160
5db8cda53a6a002db10365967d7f85d19e171b10
Search class
historical
The output has been spent. Dates and labels are catalog attributions, not audited identities.
Candidate interval
269 → 270 − 1
start0x200000000000000000
end0x3fffffffffffffffff
Interval size590295810358705651712 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
579978
Evidence
On-chain
Catalog label
pikachunakapika
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: 64.4%

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.

0000000000000000000000000000000000000000000000349b84b6431a6c4ef1

Mentioned in the atlas

Where #70 comes up in the room pages. rooms 2 · mentions 2

Myths
Scale

Method

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