Basic item listing

The basic item listing shows only rudimentary elements. If any of these are not available then the listing should be rejected.

{
  "version": "0.0.1.0",
  "item": {
    "information": {
      "title": "Title of the item",
      "short_description": "A short description / summary of item",
      "long_description": "A longer description of the item or service",
      "category": [ "Category", "Subcategory", "Subsubcategory" ]
    },
    "payment": {
      "type": "SALE",
      "escrow": {
        "type": "NOP"
      },
      "cryptocurrency": [
        {
          "currency": "BITCOIN",
          "base_price": 100000000
        }
      ]
    },
    "messaging": [
      {
        "protocol": "...",
        "public_key": "..."
      }
    ]
  }
}

note: the actual values of these fields may defer from the above.