ISO-8601 timestamp recording when the snapshot was captured (shown on provenance end card).
OptionalFileMJ: Files ID storing the frozen JSON snapshot when too large for inline embedding.
OptionalInlineOpen map from VideoDataBinding.Key to frozen resolved values when stored inline.
Human-readable provenance descriptors or IDs for every data source executed.
Frozen data snapshot captured by Pre-Production as
contextUser(§10.2).