curl --request POST \
  --url https://api.platform.bitnob.com/rpc/{chain_network} \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "id": "1",
  "jsonrpc": "2.0",
  "method": "eth_blockNumber",
  "params": "<unknown>"
}
'

const options = {
  method: 'POST',
  headers: {'X-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({id: '1', jsonrpc: '2.0', method: 'eth_blockNumber', params: '<unknown>'})
};

fetch('https://api.platform.bitnob.com/rpc/{chain_network}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.platform.bitnob.com/rpc/{chain_network}"

payload = {
    "id": "1",
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": "<unknown>"
}
headers = {
    "X-API-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.platform.bitnob.com/rpc/{chain_network}",
  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_blockNumber',
    'params' => '<unknown>'
  ]),
  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.platform.bitnob.com/rpc/{chain_network}"

	payload := strings.NewReader("{\n  \"id\": \"1\",\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": \"<unknown>\"\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.platform.bitnob.com/rpc/{chain_network}")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": \"1\",\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_blockNumber\",\n  \"params\": \"<unknown>\"\n}")
  .asString();

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

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "details": {},
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "type": "<string>"
  }
}