curl --request GET \
--url https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}import requests
url = "https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}"
response = requests.get(url)
print(response.text)const options = {method: 'GET'};
fetch('https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}"
req, _ := http.NewRequest("GET", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}")
.asString();require 'uri'
require 'net/http'
url = URI("https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
response = http.request(request)
puts response.read_body{
"utxo": {
"absolute_index": 1048620,
"tree_index": 1,
"insertion_index": 44,
"final_commitment": "aSDinaTvuI8gbWludGxpZnk=",
"h1_version": "aSDinaTvuI8gbWludGxpZnk=",
"h1_commitment_index": "aSDinaTvuI8gbWludGxpZnk=",
"h1_sender_address": "aSDinaTvuI8gbWludGxpZnk=",
"h1_mint_address": "aSDinaTvuI8gbWludGxpZnk=",
"h1_relayer_fixed_sol_fees": 5000000,
"h1_year": 2026,
"h1_month": 2,
"h1_day": 25,
"h1_hour": 12,
"h1_minute": 0,
"h1_second": 0,
"h1_purpose": 1,
"h1_circuit_provable_hash": "aSDinaTvuI8gbWludGxpZnk=",
"h1_smart_program_provable_hash": "aSDinaTvuI8gbWludGxpZnk=",
"h1_hash": "aSDinaTvuI8gbWludGxpZnk=",
"h2_hash": "aSDinaTvuI8gbWludGxpZnk=",
"aes_encrypted_data": "aSDinaTvuI8gbWludGxpZnk=",
"depositor_x25519_public_key": "aSDinaTvuI8gbWludGxpZnk=",
"timestamp": 1735689600,
"slot": 350000000,
"event_type": "deposit"
}
}{
"error": "Not Found",
"message": "Tree 99 not found"
}{
"error": "Not Found",
"message": "Tree 99 not found"
}{
"error": "Not Found",
"message": "Tree 99 not found"
}Single Note
Returns the single Stealth Pool Note record at the specified global absolute index.
curl --request GET \
--url https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}import requests
url = "https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}"
response = requests.get(url)
print(response.text)const options = {method: 'GET'};
fetch('https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}"
req, _ := http.NewRequest("GET", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}")
.asString();require 'uri'
require 'net/http'
url = URI("https://utxo-indexer.api.umbraprivacy.com/v1/utxos/{absolute_index}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
response = http.request(request)
puts response.read_body{
"utxo": {
"absolute_index": 1048620,
"tree_index": 1,
"insertion_index": 44,
"final_commitment": "aSDinaTvuI8gbWludGxpZnk=",
"h1_version": "aSDinaTvuI8gbWludGxpZnk=",
"h1_commitment_index": "aSDinaTvuI8gbWludGxpZnk=",
"h1_sender_address": "aSDinaTvuI8gbWludGxpZnk=",
"h1_mint_address": "aSDinaTvuI8gbWludGxpZnk=",
"h1_relayer_fixed_sol_fees": 5000000,
"h1_year": 2026,
"h1_month": 2,
"h1_day": 25,
"h1_hour": 12,
"h1_minute": 0,
"h1_second": 0,
"h1_purpose": 1,
"h1_circuit_provable_hash": "aSDinaTvuI8gbWludGxpZnk=",
"h1_smart_program_provable_hash": "aSDinaTvuI8gbWludGxpZnk=",
"h1_hash": "aSDinaTvuI8gbWludGxpZnk=",
"h2_hash": "aSDinaTvuI8gbWludGxpZnk=",
"aes_encrypted_data": "aSDinaTvuI8gbWludGxpZnk=",
"depositor_x25519_public_key": "aSDinaTvuI8gbWludGxpZnk=",
"timestamp": 1735689600,
"slot": 350000000,
"event_type": "deposit"
}
}{
"error": "Not Found",
"message": "Tree 99 not found"
}{
"error": "Not Found",
"message": "Tree 99 not found"
}{
"error": "Not Found",
"message": "Tree 99 not found"
}absolute_index = tree_index × 1,048,576 + insertion_index
2 × 1,048,576 + 4 = 2,097,156.
Response is a SingleUtxoResponse wrapper containing one UtxoDataItem. The X-Response-Layout header has no effect on this endpoint.
/v1/utxos/{absolute_index} segment. The record is a V18 Stealth Pool Note.Path Parameters
Global absolute index of the UTXO to fetch.
absolute_index = tree_index * MAX_LEAVES_PER_TREE + insertion_index.
x >= 0Response
UTXO record found.
Protobuf SingleUtxoResponse message returned by
GET /v1/utxos/{absolute_index}.
Contains a single UtxoDataItem when the requested absolute index exists.
On 404 Not Found the entire response is an ErrorResponse JSON body.
Protobuf UtxoDataItem message -- a single UTXO record as it appears in
UtxoResponse.items and SingleUtxoResponse.utxo.
All binary fields (final_commitment, h1_sender_address, h1_mint_address,
h1_circuit_provable_hash, h1_smart_program_provable_hash, h1_hash,
h2_hash, aes_encrypted_data, depositor_x25519_public_key) are Protobuf
bytes fields carrying the raw little-endian bytes (no base64 or hex encoding
at the wire level).
The 128-bit integer fields h1_version and h1_commitment_index are encoded
as Protobuf bytes fields containing their 16-byte little-endian binary
representation.
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