How do we model "unsigned"?

[ivozandhuis]

We need to create a pattern for the explicit statement that the artwork is unsigned. At this moment I solved this by

[vangoghworldwide]

IWe have to look in the direction of AttributeAssignment here. A quick sketch gives me something like this. Using a VGW concept for the type.

"assigned_by": [
  {
    "id": "http://.../assignment", 
    "type": "AttributeAssignment", 
    "classified_as": [
      {
        "id": "https://vangoghworldwide.org/data/concept/unsigned", 
        "type": "Type", 
        "_label": "Unsigned"
      }
    ], 
    "assigned": {
      "carries": [
        {
          "type": "LinguisticObject", 
          "classified_as": [
            {
              "id": "http://vocab.getty.edu/aat/300028705",
              "type": "Type",
              "_label": "signatures"
            }
          ],
        }
      ]
    }
  }
]

I have two questions.

• Is there another concept we can use then our own VGW one? AAT does not contain "unsigned".
• Is the "assigned": { "carries"...} needed at all?

I will post this to the linked art list? Any feedback before I do that?

Using the carried_out_by the curator/research to makes the "unsigned" statement can be added. And also the time that the statement was made can be added.