curl --request POST \
  --url https://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof \
  --header 'Content-Type: application/json' \
  --data '
{
  "updateId": "<string>",
  "transfer": {
    "sender": "<string>",
    "receiver": "<string>",
    "amount": "1.0000000000",
    "instrumentId": {
      "admin": "<string>",
      "id": "<string>"
    },
    "requestedAt": "2023-11-07T05:31:56Z",
    "executeBefore": "2023-11-07T05:31:56Z",
    "inputHoldingCids": [
      "<string>"
    ],
    "meta": {
      "values": {}
    }
  }
}
'

import requests

url = "https://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof"

payload = {
    "updateId": "<string>",
    "transfer": {
        "sender": "<string>",
        "receiver": "<string>",
        "amount": "1.0000000000",
        "instrumentId": {
            "admin": "<string>",
            "id": "<string>"
        },
        "requestedAt": "2023-11-07T05:31:56Z",
        "executeBefore": "2023-11-07T05:31:56Z",
        "inputHoldingCids": ["<string>"],
        "meta": { "values": {} }
    }
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    updateId: '<string>',
    transfer: {
      sender: '<string>',
      receiver: '<string>',
      amount: '1.0000000000',
      instrumentId: {admin: '<string>', id: '<string>'},
      requestedAt: '2023-11-07T05:31:56Z',
      executeBefore: '2023-11-07T05:31:56Z',
      inputHoldingCids: ['<string>'],
      meta: {values: {}}
    }
  })
};

fetch('https://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof', 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://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'updateId' => '<string>',
    'transfer' => [
        'sender' => '<string>',
        'receiver' => '<string>',
        'amount' => '1.0000000000',
        'instrumentId' => [
                'admin' => '<string>',
                'id' => '<string>'
        ],
        'requestedAt' => '2023-11-07T05:31:56Z',
        'executeBefore' => '2023-11-07T05:31:56Z',
        'inputHoldingCids' => [
                '<string>'
        ],
        'meta' => [
                'values' => [
                                
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof"

	payload := strings.NewReader("{\n  \"updateId\": \"<string>\",\n  \"transfer\": {\n    \"sender\": \"<string>\",\n    \"receiver\": \"<string>\",\n    \"amount\": \"1.0000000000\",\n    \"instrumentId\": {\n      \"admin\": \"<string>\",\n      \"id\": \"<string>\"\n    },\n    \"requestedAt\": \"2023-11-07T05:31:56Z\",\n    \"executeBefore\": \"2023-11-07T05:31:56Z\",\n    \"inputHoldingCids\": [\n      \"<string>\"\n    ],\n    \"meta\": {\n      \"values\": {}\n    }\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof")
  .header("Content-Type", "application/json")
  .body("{\n  \"updateId\": \"<string>\",\n  \"transfer\": {\n    \"sender\": \"<string>\",\n    \"receiver\": \"<string>\",\n    \"amount\": \"1.0000000000\",\n    \"instrumentId\": {\n      \"admin\": \"<string>\",\n      \"id\": \"<string>\"\n    },\n    \"requestedAt\": \"2023-11-07T05:31:56Z\",\n    \"executeBefore\": \"2023-11-07T05:31:56Z\",\n    \"inputHoldingCids\": [\n      \"<string>\"\n    ],\n    \"meta\": {\n      \"values\": {}\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.utilities.digitalasset.com/api/utilities/v0/registry/transfer/v0/proof")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"updateId\": \"<string>\",\n  \"transfer\": {\n    \"sender\": \"<string>\",\n    \"receiver\": \"<string>\",\n    \"amount\": \"1.0000000000\",\n    \"instrumentId\": {\n      \"admin\": \"<string>\",\n      \"id\": \"<string>\"\n    },\n    \"requestedAt\": \"2023-11-07T05:31:56Z\",\n    \"executeBefore\": \"2023-11-07T05:31:56Z\",\n    \"inputHoldingCids\": [\n      \"<string>\"\n    ],\n    \"meta\": {\n      \"values\": {}\n    }\n  }\n}"

response = http.request(request)
puts response.read_body

{}

{
  "error": "unknown_error",
  "error_description": "Something went wrong"
}

{
  "error": "unknown_error",
  "error_description": "Something went wrong"
}