Metadata based onDOI Kernel Resource Metadata Version 2.0 A DOI that identifies a resource. Any DOI. An identifier other than the DOI applied to a resource. The primary structural type of a resource. A principal sensory mode in which a resource is intended to be perceived. The general type of a resource. The DOI Registration Agency responsible for issuing a Kernel Declaration. The Date on which the Kernel Declaration was made. The sequence number of this Declaration in the series of Kernel Declarations for this DOI First issue=1. If a Kernel Declaration for a specific DOI is re-issued, this number should be incremented by one. Types (e.g. Journal Article, Coursepack, AudioRecording) may be registered in iDD by any RA