curl --request POST \
  --url https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_getRawTransactionByHash",
  "params": [
    "0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2"
  ]
}
'

import requests

url = "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "eth_getRawTransactionByHash",
    "params": ["0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2"]
}
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({
    id: 1,
    jsonrpc: '2.0',
    method: 'eth_getRawTransactionByHash',
    params: ['0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2']
  })
};

fetch('https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/', 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://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/",
  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([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'eth_getRawTransactionByHash',
    'params' => [
        '0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2'
    ]
  ]),
  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://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_getRawTransactionByHash\",\n  \"params\": [\n    \"0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2\"\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://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_getRawTransactionByHash\",\n  \"params\": [\n    \"0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")

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  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_getRawTransactionByHash\",\n  \"params\": [\n    \"0xfc48f7c70e8ffaa46b1110dc43f32e90f65434a0949edab384d066c820c57ee2\"\n  ]\n}"

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "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"
}