Bitcoin Puzzle record
Bitcoin Puzzle #26
Where it sits on the line
- found
- open · address only
- open · public key on chain
- the line · 269
This puzzle needs about 225 search steps — below the line (269).
Every puzzle below the line has been found.
Model: range scan. Every candidate key in the interval is hashed and compared with the address.
How the work is estimatedRecord
- Known public key
- 024e4f50a2a3eccdb368988ae37cd4b611697b26b29696e42e06d71368b4f3840f
- HASH160
- bfebb73562d4541b32a02ba664d140b5a574792f
- Search class
- historical
- The output has been spent. Dates and labels are catalog attributions, not audited identities.
- Candidate interval
- 225 → 226 − 1
- start0x2000000
- end0x3ffffff
- Interval size33554432 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
- 339113
- Evidence
- On-chain
- Catalog label
- 12x45A
- 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: 62.54%
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.
000000000000000000000000000000000000000000000000000000000340326e
Method
Historical record. Method notes for open puzzles live on the method page.