E

eu-verify · Validate Isin

by eu-verify

GETBase

$0.002

per call · USD Coin on Base

Deterministic ISIN check before routing an order or paying a market-data API: structure regex (2-letter country or XS/EU, 9-char NSIN, check digit) and the Luhn checksum over the base-36 expansion. Query: ?isin=US0378331005. Returns valid, country_code, nsin, check_digit and is_international. A corrupted ISIN means a rejected order or the wrong instrument. Pure offline computation, 1y cache.

Endpoint

GET https://data.greeneris.io/v1/validate/isin

1

Calls / 30d

1

Unique payers / 30d

Aug 27

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://data.greeneris.io/v1/validate/isin", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://data.greeneris.io/v1/validate/isin?isin=US0378331005" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "check_digit": "5",
  "country_code": "US",
  "is_international": false,
  "isin": "US0378331005",
  "nsin": "037833100",
  "source": "offline ISO 6166 structure + Luhn base-36 checksum (no securities reference data)",
  "valid": true
}

Payment details

Pay to0x6ab8efe305cce67daa48c97bde29c04402822dff
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact

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