OnchainPulse Tokenized Gold Comparison (PAXG vs XAUT)

{
  "type": "json",
  "errors": {
    "400": {
      "example": {
        "error": "invalid request"
      },
      "description": "Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."
    },
    "402": {
      "description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
    },
    "500": {
      "example": {
        "error": "upstream_failed"
      },
      "description": "Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."
    }
  },
  "example": {
    "tokens": [
      {
        "symbol": "PAXG",
        "attestor": "KPMG LLP",
        "price_usd": 4172.22,
        "attestation_cadence": "Monthly",
        "premium_or_discount_vs_spot_pct": -0.19
      },
      {
        "symbol": "XAUT",
        "attestor": "BDO Italia",
        "price_usd": 4166.12,
        "attestation_cadence": "Quarterly",
        "premium_or_discount_vs_spot_pct": -0.33
      }
    ],
    "spot_gold_reference": {
      "source": "gold-api.com (XAU spot)",
      "price_usd_per_oz": 4180,
      "is_independent_feed": true
    }
  }
}