[Puzzle?] 90.42691 BTC unspent UTXO at bc1qnfmreg… (Tx 308fd7…2103, 16-Apr-2023)Hi everyone,
While reviewing the **16 April 2023 “×10 refresh” transaction** that boosted all *unsolved* Bitcoin-Puzzle rewards, I spotted one output nobody seems to have covered:
TXID : 308fd7b9cad3526907739ead99ae1deaa233574a044c370f45030d4e292a2103
Block : 785 611 (16 Apr 2023 • 21:18 UTC)
Address: bc1qnfmregvreguzxsvped4vxxvdrxcqfcuclzymax
Value : 90.426 910 BTC (9 042 691 000 sats)
Status : Unspent – zero outgoing tx since creation
Why it caught my eye| Detail | Relevance |
| All other outputs (~872 BTC) from the same TX were fanned out to every known puzzle address (#66 → #160) at exactly 10 × their previous reward. | Classic “refresh” pattern. |
| This UTXO is the only leftover and was NOT part of the original puzzle list. | Looks intentionally isolated. |
9 042 691 000 sats = 9 042 691 × 1000.
The core integer 9 042 691 is prime (the 605 088-th prime). | Prime indices are a hallmark of the puzzle creator. |
| Puzzle #90 is already solved (privkey = 868012190417726402719548863). | So this 90-BTC chunk cannot be the original #90 reward. |
| No OP_RETURN, no child tx, no dust “pings”. | Address looks like a deliberate parking spot. |
Working theories so far- Fee / staging buffer – The creator might hold a large reserve for future fan-outs; 90 BTC is more than strictly necessary.
- New puzzle seed (maybe #161?) – [icode]9042691[/icode] could serve as seed or checksum, e.g.
[icode]priv_161 = SHA256(priv_90 || 9042691) mod n[/icode] - Timing beacon – Leaving a juicy UTXO idle helps measure how fast bots notice any movement.
What I’m hoping the community can clarify- Has the puzzle author (“Midori”, “13E”, etc.) ever referenced 9042691 or this 90-BTC address on IRC / Telegram / Reddit / Bitcointalk?
- Any archived chats from April 2023 that mention a prime × 1000 marker?
- Do the TX values align with any known SHA256-chain or XOR-chain progression of the solved puzzle keys?
Explorer link: https://www.blockchain.com/explorer/addresses/BTC/bc1qnfmregvreguzxsvped4vxxvdrxcqfcuclzymaxInputs that funded the refresh (for context – they are NOT puzzles)bc1qpgf7usrugzxllvydvrnngpsw3rlewelk3qfjg4 83.22524 BTC (spent)
bc1q9e8hc4p5lf677p3jsmwl36hgq84x4wwhdrundc 12.222868 BTC (spent)
bc1qrm6wtwc9vu9rzsdt3hf6rat40hdndrt2tjyxd0 24.93108 BTC (spent)
… more inputs omitted for brevity …
Thanks in advance for any leads or theories — and happy hunting!
— JeLACOSTE