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FractalAI Attest Training
x402
FractalAI Attest Training is a paid API for AI agents from fractalai.net.co, paid per call via x402, $0.05/call, status down (last checked 2026-10-13).
Issues a post-quantum cryptographic attestation (C2PA-compatible provenance manifest) for AI training data or model outputs, signed with ML-DSA-65 (Dilithium-3, NIST FIPS 204).
Price / call$0.05
Success—
StatusDown
How this service works
The first AI-native Layer 1 blockchain built from scratch in Rust. Post-quantum cryptography (CRYSTALS-Dilithium), Proof of Fractal Work consensus, WASM smart contracts, and 460+ RPC endpoints. Mine FRAC tokens with fractal analysis instead of hash puzzles.
Output
Returns a JSON object containing: a re-verifiable C2PA-compatible provenance manifest signed with Dilithium-2 (NIST FIPS 204) covering content hash, model ID, issuer, prompt hash, and timestamps; an outer ML-DSA-65 (Dilithium-3) served signature (3309 bytes in base64) over a canonical 3-line message; the matching 1952-byte base64 public key; the exact signed_message bytes for offline verification; a verify_at URL for free re-verification; and a payment settlement receipt confirming the $0.05 USDC transaction.
Example use cases
Certify AI training dataset origin
“I need to generate a verifiable post-quantum attestation for my AI training dataset — can you produce a Dilithium-signed C2PA provenance manifest that records the content hash, model ID, and issuer so auditors can verify it independently?”
Prove model output authenticity
“My company needs to prove that this AI-generated content came from our specific model — can you get a ML-DSA-65 signed attestation from FractalAI that includes the prompt hash and creation timestamp so we can attach it as tamper-evident proof?”
Regulatory compliance for ML pipeline
“We're preparing a compliance package for our machine learning pipeline and need a NIST FIPS 204 post-quantum signature over our model's training claim — can you call the FractalAI attestation service and return the full signed manifest with the public key so we can store it for audit?”
Technical details
Endpoint
POSThttps://fractalai.net.co/api/x402/attest-training?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a post-quantum cryptographic provenance attestation for AI training data or model outputs — specifically when C2PA compatibility, NIST FIPS 204 (ML-DSA/Dilithium) signatures, and offline verifiability are required. Prefer this over conventional ECDSA or RSA signing services when quantum-resistance is a compliance or future-proofing requirement, or when your workflow demands a standardized provenance manifest rather than a raw signature.
Side effects
- Missing or invalid content hash or model ID in request body — returns 400 with validation error
- Payment not settled or insufficient USDC — returns 402 Payment Required
- Signature verification failure on the server side — returns 500 with cryptographic error
- Malformed or missing issuer field — returns 400
- Network timeout during blockchain anchoring — returns 503
- Invalid x402 payment header format — returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"algorithm": "ml-dsa-65",
"signature": "BASE64",
"manifest_id": "…"
}
}Tags
x402
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