License

A License describes of the copyright under which the content is protected and the means to check its provisions and/or limitations.

{
    "identifier": "CC-BY-NC-ND-4.0",
    "ref": "https://spdx.org/licenses/",
    "meta" : {
      "property": "value"
    }
}

Property	Description	Type	Required
identifier	Sluggable label of the copyright schema.	string	Yes
meta	Arbitrary object of custom properties.	object	No
ref	Internet reference for the full definition of the copyright terms.	object	Yes

Note

A valid license is any identifier from the SPDX list: https://spdx.org/licenses/