Examine source code of Proof

{
  "version": "0.2.8resigned1",
  "name": "Proof",
  "manifest_version": 2,
  "icons": {
    "128": "images/proof-icon-extension.png"
  },
  "description": "Submit URL of articles to the Proof platform",
  "author": "Paolo D.",
  "browser_action": {
    "default_title": "Proof",
    "default_popup": "popup.html",
    "default_icon": "images/proof-icon-inactive.png"
  },
  "permissions": [
    "tabs",
    "alarms",
    "notifications",
    "storage",
    "contextMenus",
    "https://*.proofmedia.io/*",
    "https://*.proofmediadev.com/*"
  ],
  "web_accessible_resources": [
    "images/proof-icon-*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "applications": {
    "gecko": {
      "id": "support@proofmedia.io",
      "strict_min_version": "57.0"
    }
  }
}