Verified answers to expensive problems.
We accept a job only when its answer can be verifiably checked. You are charged only if it is solved to the agreed specification. Every result is cryptographically signed — and reusable, so the next buyer pays a fraction of the original compute.
An expensive truth, proven once, should be cheap forever.
Everything here — the intake gate, the pay-only-if-solved pricing, the signatures — is bookkeeping in service of that one idea.
How it works
Only winnable jobs
An adversarial judge accepts a problem only if the answer has an inexpensive, pre-agreed verification and the expected value clears the cost. We don't take cheap work — trivial or infeasible jobs are declined at intake.
Charged only on proof
Payment is authorized, the work is done, and the charge is captured only when the signed result passes verification. Miss the specification and you are not charged.
Computed once, reusable
Each verified answer is signed and recorded. A later buyer who needs the same result checks the proof themselves and pays a fraction of the original compute.
Answer catalog
No verified answers listed yet.
The catalog fills as real jobs are solved, signed, and recorded in the public transparency log. Every entry will carry an Ed25519 attestation a reuse buyer can check before paying — we don't list an answer we can't prove, which is the whole point.
| id | domain | verification | solve | reuse | save | reuses |
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Verification & privacy
A job qualifies only where checking the answer is materially cheaper than computing it. Public records are facts only and pseudonymized: the verifiable result, its specification, and its price — never the buyer's identity or proprietary inputs. We are aware that “pay only if solved” reads as too good to be true. It is simply structured that way.