C

Cryptoetfsentinel · FEE WAR History

by Cryptoetfsentinel

GETBaseSolana

$0.1

per call · USD Coin on Base

Crypto ETF Sentinel — Quarterly fee-war progression: average and median expense ratios over time across the US spot crypto ETF trading cohort, with per-issuer detail each quarter. Use when documenting how fee competition has compressed since the January 2024 spot Bitcoin ETF launch. Optional crypto filter.

Endpoint

GET https://api.cryptoetfsentinel.com/v1/xbrl/fee-war/history

3

Calls / 30d

1

Unique payers / 30d

Sep 6

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
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://api.cryptoetfsentinel.com/v1/xbrl/fee-war/history", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://api.cryptoetfsentinel.com/v1/xbrl/fee-war/history?crypto=bitcoin" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "data": [
    {
      "issuers": [
        {
          "cik": "0001980994",
          "expense_ratio": 0.0025,
          "expense_ratio_bps": 25,
          "name": "iShares Bitcoin Trust ETF",
          "ticker": "IBIT"
        }
      ],
      "period_end": "2025-12-31",
      "quarter": "2025-Q4"
    }
  ],
  "meta": {
    "concept": "expense_ratio",
    "total": 29,
    "unit": "pure"
  }
}

Payment details

Pay to0x169bf49c6ee5a179190121ab8d180b50e31683d1
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana
Schemesexact

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