Contents of /app/:

import asyncio
import re
import sys
import time
import json
import subprocess
import requests
import websockets
from typing import Dict, Optional, List
from loguru import logger
from playwright.async_api import async_playwright, Page, BrowserContext
import os
from utils import get_screensize
from shutil import which


def _get_chromium_version(executable_path: str = "/usr/bin/chromium") -> Optional[str]:
...

Contents of /app/browser_guard.py:

1. Imports: asyncio, playwright, loguru, requests, websockets, and various utilities
2. Helper functions for browser fingerprinting:
   • _get_chromium_version() - Detects Chromium version from executable
   • _chrome_major() - Extracts major version number
   • _build_user_agent() - Constructs realistic Chrome User-Agent strings
   • _build_ua_ch_headers() - Builds Client Hints headers
3. A large stealth_js string containing JavaScript code for Bitcoin stealth address cryptography, including:
   • Stealth address parsing and formatting
   • Diffie-Hellman key exchange functions
   • Public/private key derivation
   • Base58 encoding/decoding

Analysis of Lines 60-70 of /app/browser_guard.py:

if (typeof module === 'object' && typeof define !== 'function') {
    var define = function (factory) {
        module.exports = factory(require, exports, module);
    };
}

define(function (require, exports, module) {

var Bitcoin = require('./bitcoinjs-lib-wrapper');
var BigInteger = require('bigi');
var base58check = require('bs58check');

What this code does:

1. UMD (Universal Module Definition) Pattern (lines 60-64): This is a standard JavaScript module wrapper that allows the code to work in different environments:
   • Checks if module exists (Node.js/CommonJS environment)
   • If define (AMD/require.js) doesn't exist, it creates a simple define function that exports to module.exports
2. Module Definition (line 66): The define() call starts the actual module definition using the factory function pattern.
3. Dependencies (lines 68-70): The module requires three external libraries:
   • bitcoinjs-lib-wrapper - A wrapper around BitcoinJS library for cryptocurrency operations
   • bigi - A BigInteger library for handling large numbers (essential for cryptographic operations)
   • bs58check - Base58Check encoding/decoding library (used for Bitcoin addresses and keys)

Context: