curl --request POST \
  --url https://api.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...",
  "reference": "sol-child-broadcast-001",
  "metadata": {
    "source": "jupiter"
  }
}
'

import requests

url = "https://api.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast"

payload = {
    "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...",
    "reference": "sol-child-broadcast-001",
    "metadata": { "source": "jupiter" }
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    transaction: 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...',
    reference: 'sol-child-broadcast-001',
    metadata: {source: 'jupiter'}
  })
};

fetch('https://api.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast', 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.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast",
  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([
    'transaction' => 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...',
    'reference' => 'sol-child-broadcast-001',
    'metadata' => [
        'source' => 'jupiter'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($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.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast"

	payload := strings.NewReader("{\n  \"transaction\": \"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...\",\n  \"reference\": \"sol-child-broadcast-001\",\n  \"metadata\": {\n    \"source\": \"jupiter\"\n  }\n}")

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

	req.Header.Add("x-api-key", "<api-key>")
	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.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transaction\": \"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...\",\n  \"reference\": \"sol-child-broadcast-001\",\n  \"metadata\": {\n    \"source\": \"jupiter\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.blockradar.co/v1/wallets/{id}/addresses/{addressId}/signing/broadcast")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"transaction\": \"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...\",\n  \"reference\": \"sol-child-broadcast-001\",\n  \"metadata\": {\n    \"source\": \"jupiter\"\n  }\n}"

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

{
  "statusCode": 200,
  "message": "Transaction signed and broadcast initiated",
  "data": {
    "id": "f3efdbaa-a1f8-4365-b3b4-768413c9a92b",
    "reference": "sol-child-broadcast-001",
    "senderAddress": "6NkEUDPS6TBkP1VSc2SZVRdtuARUFhQvMRz28RonytUG",
    "recipientAddress": "6NkEUDPS6TBkP1VSc2SZVRdtuARUFhQvMRz28RonytUG",
    "hash": "5bKNw9RX8aXkrK1VEHg5aPa1xtckpShPyenSRET4mUBXh5uCkWLFV5MhGRi4cMACDJvFn6VfkoKb75Pk4KYw6xtw",
    "confirmed": false,
    "status": "PENDING",
    "type": "SIGNED",
    "createdChannel": "api",
    "reason": "Transaction signed and broadcast",
    "network": "testnet",
    "chainId": 103,
    "metadata": null,
    "signedTransaction": "AeWpW65y80rSu+TU0CSrcvFNovyDiybKRjSskCpfffAFLM0GIYzx...",
    "amount": null,
    "amountUSD": "0.00",
    "fee": null,
    "feeUSD": null,
    "currency": "USD",
    "createdAt": "2026-03-19T13:35:09.921Z",
    "updatedAt": "2026-03-19T13:35:09.921Z",
    "wallet": {
      "id": "c72a6f21-6ab5-48ad-9f99-fd90a2d6d311",
      "name": "Solana Testnet Wallet",
      "address": "HKqZUT3wuyJrsPYmrYPcGduDdjXZTggbLrNsF9WHMvbw",
      "isActive": true,
      "status": "ACTIVE",
      "network": "testnet"
    },
    "asset": null,
    "blockchain": {
      "id": "196badf5-380f-4480-ab4a-d0e4304e91f0",
      "name": "solana",
      "symbol": "sol",
      "slug": "solana",
      "isEvmCompatible": false,
      "tokenStandard": null
    },
    "beneficiary": null
  }
}

{
  "statusCode": 400,
  "message": "Invalid transaction format: expected a base64-encoded Solana VersionedTransaction"
}