Get Launcher URL

Securely retrieve a dynamic game launch URL that automatically adapts to:

• Geo-blocking rules
• Rotating game hosts (for availability & performance)
• Regional compliance
• Session token validation

---

Endpoint

POST /serviceApi.php
Content-Type: application/json

danger

Never hardcode game URLs — always use this endpoint for reliable, compliant launches.

Real version

https://stg.otkgaming.com/serviceApi.php

Request body

{
    "action"      : "getLauncherURL",
    "platform"    : 8,
    "partnerId"   : 1,
    "time"        : "29-08-2026 11:47:24",
    "hash"        : "dd9f710d5d324f66b7429052fa97debf8347e579471ab059a27d503010a31e2a",
    "data": {
    "gameMode": "real",
    "gameId"  : "1",
    "lang"    : "en",
    "externalToken": "80bfefc4344e78f7dc13745c0efe5",
    "playerId": "operators player id",
    "country" : "GB",
    "ip"      : "users ip address",
    "exitURL"   : ""
}
}

Demo version

https://stg.otkgaming.com/serviceApi.php

Request body

{
    "action"      : "getLauncherURL",
    "platform"    : 8,
    "partnerId"   : 1,
    "time"        : "29-08-2026 11:47:24",
    "hash"        : "dd9f710d5d324f66b7429052fa97debf8347e579471ab059a27d503010a31e2a",
    "data": {
    "gameMode": "fun",
    "gameId"  : "1",
    "lang"    : "en",
    "playerId": "operators player id",
    "country" : "GB",
    "ip"      : "users ip address",
}
}

info

For Demo version, "gameMode" must be set to "fun". and externalToken can be empty.

---

info

Hash string is calculated based on privateKey, time, and "data" in JSON string.

Hash calculation example

Node.js (JavaScript)

https://stg.otkgaming.com/serviceApi.php

const crypto = require('crypto');
const privateKey = "utj3Gfrr0W ";
const time = "29-08-2026 11:47:24";
const data = {
gameMode: "real",
gameId: "1",
lang: "en",
token: "80bfefc4344e78f7dc13745c0efe5",
exitURL: ""
};

const dataEncoded = JSON.stringify(data); // JSON.stringify does not escape slashes
const input = privateKey + time + dataEncoded;
const hash = crypto.createHash('sha256').update(input).digest('hex');

console.log(hash);

Go

https://stg.otkgaming.com/serviceApi.php

package main

import (
"crypto/sha256"
"encoding/hex"
"encoding/json"
"fmt"
"strings"
)

func main() {
privateKey := "utj3Gfrr0W "
time := "29-08-2026 11:47:24"
data := map[string]string{
"gameMode": "real",
"gameId":   "1",
"lang":     "en",
"token":    "80bfefc4344e78f7dc13745c0efe5",
"exitURL":  "",
}

// Marshal without escaping slashes (default in Go)
dataEncoded, _ := json.Marshal(data)

input := privateKey + time + string(dataEncoded)
hash := sha256.Sum256([]byte(input))
fmt.Println(hex.EncodeToString(hash[:]))
}

Python

https://stg.otkgaming.com/serviceApi.php

import hashlib
import json

private_key = "utj3Gfrr0W "
time = "29-08-2026 11:47:24"
data = {
"gameMode": "real",
"gameId": "1",
"lang": "en",
"token": "80bfefc4344e78f7dc13745c0efe5",
"exitURL": ""
}

# ensure_ascii=False prevents escaping of slashes
data_encoded = json.dumps(data, separators=(',', ':'), ensure_ascii=False)
input_str = private_key + time + data_encoded
hash_obj = hashlib.sha256(input_str.encode('utf-8'))
print(hash_obj.hexdigest())

PHP

https://stg.otkgaming.com/serviceApi.php

<?php
$privateKey = "utj3Gfrr0W ";
$time = "29-08-2026 11:47:24";
$data = [
"gameMode" => "real",
"gameId"   => "1",
"lang"     => "en",
"token"    => "80bfefc4344e78f7dc13745c0efe5",
"exitURL"  => ""
];

$dataEncoded = json_encode($data, JSON_UNESCAPED_SLASHES);
$hash = hash("sha256", $privateKey . $time . $dataEncoded);

echo $hash;
?>

Result

d8ac5ca5c416c1aeadca11013e6dbaa613248739d7c1ad19e6f7601d57d4699f

Response Example

Success

https://stg.otkgaming.com/serviceApi.php

{
    "code"        : 0,
    "message"     : "ok",
    "data"        : {
    "launcherURL" : "https://stg.otkgaming.com/?partnerId=1&gameId=1&gameMode=real&lang=en&platform=8&externalToken=80bfefc4344e78f7dc13745c0efe5&exitURL="
}
}

Rejected

https://stg.otkgaming.com/serviceApi.php

{
    "code"    : 8,
    "message" : "hash not valid",
    "data"    : null
}

{
    "code"    : 9,
    "message" : "platform not valid (partnerid or platform values are wrong",
    "data"    : null
}