The nt:version node type has the following definition (repeated from 6.7.22.15 nt:version):
NodeTypeName
nt:version
Supertypes
nt:base
mix:referenceable
IsMixin
false
HasOrderableChildNodes
false
PrimaryItemName
null
PropertyDefinition
Name jcr:created
RequiredType DATE
ValueConstraints []
DefaultValues null
AutoCreated true
Mandatory true
OnParentVersion ABORT
Protected true
Multiple false
PropertyDefinition
Name jcr:predecessors
RequiredType REFERENCE
ValueConstraints ["nt:version"]
DefaultValues null
AutoCreated false
Mandatory false
OnParentVersion ABORT
Protected true
Multiple true
PropertyDefinition
Name jcr:successors
RequiredType REFERENCE
ValueConstraints ["nt:version"]
DefaultValues null
AutoCreated false
Mandatory false
OnParentVersion ABORT
Protected true
Multiple true
ChildNodeDefinition
Name jcr:frozenNode
RequiredPrimaryTypes [nt:frozenNode]
DefaultPrimaryType null
AutoCreated false
Mandatory false
OnParentVersion ABORT
Protected true
SameNameSiblings false
nt:version is a subtype of nt:base, so it has the properties jcr:primaryType and jcr:mixinTypes.
In addition, each nt:version node inherits the mixin type mix:referenceable, providing it with a jcr:uuid property.
Additionally it has:
jcr:created: This property records the date and time that the version was created.
jcr:predecessors: A multi-value REFERENCE property that points to the immediate predecessors of this version in the version history.
jcr:successors: A multi-value REFERENCE property that points to the immediate successors of this version in the version history.
These properties store the meta-data that is needed by the repository to manage the version. In addition to these properties, of course, the version entity must also store the actual state of the node that was versioned to produce it. This is done by storing a “frozen” copy of the versionable node in the form of a special child node of the version node, called jcr:frozenNode:
jcr:frozenNode: A child node of type nt:frozenNode which holds the actual state of the versionable node at the time that this version was created.