Kronos Crypto Data & Forecasts · CEX Premium BTC

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://kronossignals.com/api/v1/cex-premium/btc", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://kronossignals.com/api/v1/cex-premium/btc" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "as_of": "2026-01-01T00:00:00.000Z",
  "asset": "BTC-USD",
  "available": true,
  "coinbase_price": 61320.5,
  "composite_median": 61198.3,
  "composite_source_count": 3,
  "disclaimer": "Cross-exchange premium is informational only. Spread may reflect latency, liquidity, or fees — not a pure demand signal. Not financial advice.",
  "historical_note": "Point-in-time only — no 24h percentile or 30d z-score (no historical baseline stored).",
  "interpretation": "Coinbase is trading at a +0.20% premium to global composite. Mild US/institutional demand bias.",
  "premium_pct": 0.2,
  "sources_used": [
    {
      "exchange": "coinbase",
      "price": 61320.5,
      "role": "reference"
    },
    {
      "exchange": "okx",
      "price": 61195.2,
      "role": "composite"
    },
    {
      "exchange": "kraken",
      "price": 61201.4,
      "role": "composite"
    },
    {
      "exchange": "binance",
      "price": 61198.3,
      "role": "composite"
    }
  ]
}