# FractalAI Attest Training

> 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).

## Facts

- Endpoint: POST https://fractalai.net.co/api/x402/attest-training?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fractalai-attest-training-9491d2a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r89IPlYjNWr5GLJLd2_px

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fractalai-attest-training-9491d2a1 -d '<json body>'
```

Example prompt: Can you create a post-quantum Dilithium attestation for my AI training dataset — I need a C2PA-compatible provenance manifest signed with ML-DSA-65 so I can prove the content hash and model ID are authentic and tamper-proof?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "algorithm": "ml-dsa-65",
  "signature": "BASE64",
  "manifest_id": "…"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fractalai-attest-training-9491d2a1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fractalai.net.co](https://www.zero.xyz/host/fractalai.net.co/llms.txt)