{
  "$schema": "http://json-schema.org/draft-03/schema#",
  "id": "http://popoloproject.com/schemas/contact_detail.json#",
  "title": "Contact detail",
  "description": "A means of contacting an entity",
  "type": "object",
  "properties": {
    "label": {
      "description": "A human-readable label for the contact detail",
      "type": ["string", "null"]
    },
    "type": {
      "description": "A type of medium, e.g. 'fax' or 'email'",
      "type": "string",
      "required": true
    },
    "value": {
      "description": "A value, e.g. a phone number or email address",
      "type": "string",
      "required": true
    },
    "note": {
      "description": "A note, e.g. for grouping contact details by physical location",
      "type": ["string", "null"]
    },
    "created_at": {
      "description": "The time at which the resource was created",
      "type": ["string", "null"],
      "format": "date-time"
    },
    "updated_at": {
      "description": "The time at which the resource was last modified",
      "type": ["string", "null"],
      "format": "date-time"
    },
    "sources": {
      "description": "URLs to documents from which the contact detail is derived",
      "type": "array",
      "items": {
        "$ref": "http://popoloproject.com/schemas/link.json#"
      }
    }
  }
}