@openstreetmap/id-tagging-schema/data/fields/official_name.json

The OpenStreetMap tagging model used by the iD editor

{
    "key": "official_name",
    "type": "localized",
    "label": "Official Name",
    "universal": true,
    "terms": [
        "formal name",
        "full name",
        "legal name"
    ],
    "prerequisiteTag": {
        "key": "name"
    }
}