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FractalAI Training Provenance

Pay-per-Training-Provenance: an agent pays to seal the provenance of a dataset or training run — a C2PA-compatible manifest binding the dataset/artifact hash to a declared origin, served with a post-quantum ML-DSA-65 / Dilithium-3 (NIST FIP

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
720 ms
Price
$0.050 per call
Paying buyers, last 30 days
3 (directory's own records)
Paid calls, last 30 days
7
Category
Travel: rail, car hire, other
Address
https://fractalai.net.co/api/x402/attest-training

Accuracy

Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.

For agents

This page as JSON: /sellers/ac1f3a055096.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].