Persistent Digital Object (Q164)

This class comprises instances of digital object which are the result of a distinct creation moment in which the whole of the content of the digital object was established and encoded at a bit level, whether this creation moment is known or not. Persistent digital objects are thus identified by their content, bit level encoding and the moment of production as a whole unit of information. An instance of persistent digital object continues to exist as long as one copy of it remains on one carrier which has been maintained without change to its internal content, thus propagating the original condition of the instance. .