Bitcoin Puzzle record
Bitcoin Puzzle #1
Where it sits on the line
- found
- open · address only
- open · public key on chain
- the line · 269
This puzzle needs about 20 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
- 0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798
- HASH160
- 751e76e8199196d454941c45d1b3a323f1433bd6
- Search class
- historical
- The output has been spent. Dates and labels are catalog attributions, not audited identities.
- Candidate interval
- 20 → 21 − 1
- start0x1
- end0x1
- Interval size1 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
- 339085
- Evidence
- On-chain
- Catalog label
- 1HdtWQ
- 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: 100% Legacy display: the #1 interval holds a single scalar (offset 0).
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.
0000000000000000000000000000000000000000000000000000000000000001
Mentioned in the atlas
Where #1 comes up in the room pages. rooms 9 · mentions 17
- History
-
- 2017-07-11 — Consolidation On-chainTimeline
- 2019-05-16 — 1,000-sat deposits on the leak series On-chainTimeline
- Myths
-
- The private key is the puzzle number (or 2N − 1). RefutedCryptography
- Start scanning from key 1, or from the start of secp256k1. RefutedCryptography
- Theories
-
- “There is no pattern” Forum statementForum statements
- FAQ
-
- What does known public key mean? On-chainSearch classes
- Method
-
- #1 scalar 1 Cryptographically verified
- The first keys are not a method Forum statement
+9 more mentions
- History
-
- 2019-06-01 — Public keys revealed On-chainTimeline
- Scale
-
- #1 — width 1 Method
- 2019 leak map On-chain
- Challenges
-
- What made kangaroo practical on the later every-fifth addresses? On-chainCatalog unit and the 2019 leak
- The first four keys are 1, 3, 7, 8. Does that give #71? Forum statementWhat is not a method
- Sources
-
- 2019-05-16 — 1,000-sat deposits On-chainChain records
- 2019-06-01 — public-key reveal On-chainChain records
- Library
-
- The first keys as a lesson Cryptographically verifiedMethod in prose
- 2019 leak map On-chainCatalog briefings
Method
Historical record. Method notes for open puzzles live on the method page.