soundcloud

[gandalfs-cat]

here is a rule for soundcloud

"soundcloud": {
      "urlPattern": "^https?:\\/\\/(?:[a-z0-9-]+\\.)*?soundcloud\\.com",
      "rules": [
        "si",
        "p",
        "c",
        "ref"
      ]
    },

• ref seems to be used for share-source tracking, usually i see it set to values like "clipboard" or "instagram"
  ...except on checkout.soundcloud.com, where it seems to be a short random string used for unknown purpose, possibly functional?
• the purpose of p and c are unknown, but they don't seem to be critical for functionality
  • ive only seen c set to 0
  • values observed for p: i, a
• si is almost certainly a share identifier
  clicking share on soundcloud gives you a opaque on.soundcloud.com url which redirects to a plain soundcloud.com url with a si parameter.