STRONGLY RECOMMENDED. Absolute URL to the location that the file can be found online, if available. This is particularly useful when in a download package that includes metadata, so that the downstream user can know where the data has come from.
license
The license URL(s) for the data SHOULD be specified if the license field is set to other. If there is no public license URL available, it is RECOMMENDED to put the license text in a separate file and link to this file.
Would it be good to have a link construct comparable to what STAC has? https://github.com/radiantearth/stac-spec/blob/master/item-spec/item-spec.md#link-object
cc @cholmes
Copied from an early draft of the spec:
Link Object
This object describes a relationship with another entity. Data providers are advised to be liberal with links.
Relation Types
Where possible it is recommended to use the official IANA Link Relation Types.
license
field is set toother
. If there is no public license URL available, it is RECOMMENDED to put the license text in a separate file and link to this file.