Examine source code of WH Cypher

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "short_name": "WH Cypher (Beta)",
  "description": "Multichain multisig wallet that supports Bitcoin, Ethereum, Binance Smart Chain and more.",
  "name": "WH Cypher (Beta)",
  "manifest_version": 2,
  "version": "0.0.2.7",
  "browser_action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "icons/favicon-16x16.png",
    "32": "icons/favicon-32x32.png",
    "96": "icons/favicon-96x96.png"
  },
  "content_security_policy": "script-src 'self' blob: 'unsafe-eval'; object-src 'self';",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "storage",
    "notifications",
    "unlimitedStorage",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "file://*/*",
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "inpage.js",
    "icons/favicon-16x16.png"
  ]
}