Elements defined


pbcoreAssetDate is intended to reflect dates associated with the Intellectual Content.

Best Practice: By contrast, instantiationDate is intended to reflect date information for the specific instance. For instance, if you have a VHS copy of Gone With The Wind, the pbcoreAssetDate would be 1939, while the instantiationDate of the VHS copy could be 1985. pbcoreAssetDate may also be used to reflect availability dates, etc. Date types should be specified using the @dateType attribute. Dates or time-based events related to the content of the asset, on the other hand, would be described in the ‘coverage’ element — so, while the storyline of Gone with the Wind takes place in the nineteenth century, this information should be noted in the Coverage field, not the assetDate field. Best practice is to use ISO 8601 or some other date/time standard if possible.

Usage: optional, repeatable


  • dateType: optional | The dateType attribute classifies by named type the date-related data of the element e.g., created, broadcast, dateAvailableStart. Can be used as an attribute of the following elements - pbcoreAssetDate, instantiationDate.
  • source: optional | The source attribute provides the name of the authority used to declare the value of the element. Required attribute for pbcoreIdentifier and instantiationIdentifier elements. Can be used as an attribute of any element.
  • ref: optional | The ref attribute is used to supply a source’s URI for the value of the element. Can be used as an attribute of any element.
  • version: optional | The version attribute identifies any version information about the authority or convention used to express data of this element. Can be used as an attribute of any element.
  • annotation: optional | The annotation attribute includes narrative information intended to clarify the nature of data used in the element. Can be used as an attribute of any element.


This element does not have any subelements.

Controlled Vocabularies