More famous addresses · Historic transactions
Bitcoin puzzle #71
1PWo3JeB9jrGwfHDNpdGK54CRas7fsVzXUOn 15 January 2015 one transaction paid 256 addresses an amount that rises with each position, the pattern known as the Bitcoin puzzle; this address appears to be puzzle #71. Top-ups in 2017 and 2023 raised its prize to 7.1 BTC. It has never sent any coins, so on chain the prize is still unclaimed. The puzzle's creator is anonymous.
Balance
₿ 7.10195118$588,858 · price as of 22 Oct 2026
- Txs
- 71
- Utxos
- 71
- Since
- 15 Jan 2015
- Last seen
- 17 Oct 2026
- Type
- Legacy P2PKH
- Updated
- 22 Oct 2026
Value over time
Label · with receipt
Bitcoin puzzle #71 (apparent) Attributed
Source: Public chain record (block 339,085) · evidence tier medium · an inference from public evidence, not an ownership proof · source checked 20 Oct 2026.
Receipt: sha256:e89c0e35a272…8 of 9 components checked, 22 Oct 2026
Chain notes
- Unspent outputs Attention
71 unspent outputs. This address holds many separate coins. Spending them together can cost more in fees than spending fewer, larger coins. What an unspent output is
- Small outputs Warning
4 unspent outputs (276 sats) cost more to spend than they hold at typical fees. What dust is
- Address reuse Info
Seen in 71 transactions. Repeated use of one address is publicly linkable. What address reuse means
- Address type Info
Legacy (P2PKH), the original address format. Relative fees depend on transaction structure. What the address types mean
- Unspent output distribution Info
The largest output holds 89% of the balance. What a change output is
- Activity Good
Active in the last week. What dormant, quiet and pending mean
The notes describe what the chain shows; they do not rate the address. Chain notes, explained.