[evanweaver]

This is possible in Fauna. All documents are actually collections of document versions within the configurable retention period. If you ensure that every writer decorates the document with the facets you want to search by (ip address, etc.) then you can construct indexes on those facets and query them temporally. They will return event records that show when the document entered the index (when that ip updated it) and left the index (when a different ip updated it).

Map the index additions and their timestamps onto the documents themselves and you can retrieve the entire state of each record that the ip wrote at the time that it wrote it. If you want to know specifically what that ip changed, then diff it with the previous record, for example, to filter down to updates that only changed the email address.