Time series content

[fedorow]

Hello,
We need to organise time series content. Each version of document have timestamps from/to and its own copy of metadata. We want to edit each version of document in time series and edit its “old” metadata with UI and have access to time versions by API. I think about a custom content model with folders represents object. But how to organaze documents witch discribe the state of this object in some period of time?

Please suggest me!