BetaOptionaladdeddate?: stringIndicates to the website what collection(s) this item belongs to.
Unique identifier for an item on the archive.org web site. Used in the URL for the item, ie archive.org/details/[identifier].
Mediatype tells us about the main content of the item. It is used to determine how the item is displayed on the web site and may trigger special processing depending on the types of files contained in the item.
Optionalpublicdate?: stringThe date and time in UTC that the item was created on archive.org.
Optionalsearch_collection?: stringOptional search term for collections
2019-12 and later dates: represents time item was added to public search engine. Earlier dates: Date and time in UTC that the item was created