Get UTXOs for an address, XPUB, or descriptor.

GET

https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns unspent outputs for an address, XPUB, or descriptor on Bitcoin-type coins. By default both confirmed and unconfirmed UTXOs are returned; confirmed=true filters out unconfirmed entries. Results are sorted by block height with newest entries first.

Unconfirmed UTXOs omit height, have confirmations set to 0, and can include lockTime. XPUB and descriptor UTXOs also include address and derivation path when available. Coinbase UTXOs include coinbase=true only up to the coinbase confirmation limit, currently 100 blocks.

Load estimate: Variable; address lookups are usually medium, while XPUB/descriptor lookups grow with gap, derived addresses, and UTXO count.

Parameters

descriptorstringrequiredpath

Address, XPUB, or supported descriptor. URL-encode descriptors.

confirmedbooleanquery

When true, return only confirmed UTXOs.

gapinteger[0, 10000]query

XPUB/address derivation gap limit.

Response

200OK

UTXO list.

400Bad Request

Bad Request

401Unauthorized

Unauthorized. Returned when the api-key header is missing, empty, or not accepted by the NOWNodes gateway. The body is plain text.

405Method Not Allowed

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

422Unprocessable Entity

Unprocessable Entity. Returned by the NOWNodes gateway for requests it accepts but cannot process. The body is plain text.

500Internal Server Error

Internal Server Error

503Service Unavailable

Service Unavailable

default

Public API error.

Get UTXOs for an address, XPUB, or descriptor.

curl -X GET 'https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}'

const response = await fetch('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}', {
  method: 'GET',
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}')
request = Net::HTTP::Get.new(uri)

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

import requests

response = requests.get('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}')
data = response.json()

const response = await fetch('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}', {
  method: 'GET',
});

const data = await response.json();

const endpoint = "https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "GET",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({});
console.log(result);

const response = await fetch('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}', {
  method: 'GET',
});

const data = await response.json();

import requests

response = requests.get('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}')
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://ltcbook-testnet.nownodes.io/api/v2/utxo/{descriptor}')
request = Net::HTTP::Get.new(uri)

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

[
  {
    "txid": "f755d8880768f2f4a0973d56444b36ee834a201091fb48cd337fae855460962c",
    "vout": 1,
    "value": "1000000",
    "height": 4854288,
    "confirmations": 684,
    "address": "string",
    "path": "string",
    "lockTime": 0,
    "coinbase": true
  }
]

{}

Unknown API_key

Method Not Allowed

Missing API_key

{}

{}

{
  "error": "Invalid address 'notanaddress', checksum mismatch"
}