curl --request POST \
  --url https://api.lightspark.com/grid/2025-10-13/customers/external-accounts/{externalAccountId}/verify \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "signature": "0x52d75f01c9e7b8b2ce2fbcbd21bfeeee7bcd1a2f01ce6b8ad9a67a45e83a8f5d1c",
  "signatureScheme": "bip137"
}
'

import LightsparkGrid from '@lightsparkdev/grid';

const client = new LightsparkGrid({
  username: process.env['GRID_CLIENT_ID'], // This is the default and can be omitted
  password: process.env['GRID_CLIENT_SECRET'], // This is the default and can be omitted
});

const externalAccount = await client.customers.externalAccounts.verify('externalAccountId', {
  signature: '0x52d75f01c9e7b8b2ce2fbcbd21bfeeee7bcd1a2f01ce6b8ad9a67a45e83a8f5d1c',
});

console.log(externalAccount.id);

package com.lightspark.grid.example

import com.lightspark.grid.client.LightsparkGridClient
import com.lightspark.grid.client.okhttp.LightsparkGridOkHttpClient
import com.lightspark.grid.models.customers.externalaccounts.ExternalAccount
import com.lightspark.grid.models.customers.externalaccounts.ExternalAccountVerifyParams
import com.lightspark.grid.models.customers.externalaccounts.OwnershipVerifyRequest

fun main() {
    val client: LightsparkGridClient = LightsparkGridOkHttpClient.fromEnv()

    val params: ExternalAccountVerifyParams = ExternalAccountVerifyParams.builder()
        .externalAccountId("externalAccountId")
        .ownershipVerifyRequest(OwnershipVerifyRequest.builder()
            .signature("0x52d75f01c9e7b8b2ce2fbcbd21bfeeee7bcd1a2f01ce6b8ad9a67a45e83a8f5d1c")
            .build())
        .build()
    val externalAccount: ExternalAccount = client.customers().externalAccounts().verify(params)
}

{
  "id": "ExternalAccount:e85dcbd6-dced-4ec4-b756-3c3a9ea3d965",
  "status": "ACTIVE",
  "currency": "USD",
  "accountInfo": {
    "accountType": "AED_ACCOUNT",
    "iban": "AE070331234567890123456",
    "swiftCode": "EBILAEAD"
  },
  "customerId": "Customer:da459a29-1fb7-41ce-a4cb-eb3a3c9fd7a7",
  "platformAccountId": "acc_123456789",
  "ownershipType": "FIRST_PARTY",
  "defaultUmaDepositAccount": false,
  "beneficiaryVerifiedData": {
    "fullName": "John Doe"
  }
}

{
  "status": 400,
  "message": "<string>",
  "details": {
    "errors": [
      {
        "field": "identifier",
        "constraint": {
          "format": "email",
          "pattern": "^\\d{5}(-\\d{4})?$",
          "enum": [
            "SSN",
            "ITIN",
            "NON_US_TAX_ID"
          ],
          "minLength": 1,
          "maxLength": 500
        },
        "message": "Value is not one of the allowed enum members."
      }
    ]
  }
}

{
  "status": 401,
  "message": "<string>",
  "details": {}
}

{
  "status": 404,
  "message": "<string>",
  "details": {}
}

{
  "status": 409,
  "message": "<string>",
  "details": {}
}

{
  "status": 500,
  "message": "<string>",
  "details": {}
}