Valaxia
a marketplace of formalized problems
Fingerprint a fileWhat this is
Someone posts a hard problem with a money reward, written as a verifiable acceptance criterion. Mathematicians and scientists solve it. Whoever solves it is paid in full; their work stays theirs until the moment of payment. If nobody solves it, the reward goes back in full.
What works today
A free tool with no account: fingerprint a file. Your file never leaves your computer; only its SHA-256 hash is recorded in a public, append-only, hash-chained registry, signed by this server and anchored in Bitcoin through OpenTimestamps. You get a certificate anyone can verify without trusting us.
Why it matters
A dated fingerprint is proof that a result existed at a moment in time, without revealing it. It is the mechanism the Leiden Declaration asks for and does not provide. Priority becomes arithmetic, not dispute.
Latest registry entries (2 entries)
| # | Recorded at (UTC) | File SHA-256 | |
|---|---|---|---|
| 2 | 2026-09-17T05:48:01 | 6f86f07baf6ec4ab… | 343 |
| 1 | 2026-09-17T05:07:27 | 1fbf2b4093903b71… | Valaxia — planul de construcție (docs/plan_constructie_ro.md, commit 81900c0) |