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History & Time-Travel Queries

Fluree maintains a complete history of all changes, enabling powerful temporal queries.

Article History​

See all versions of an article:


{
"@context": { "f": "https://ns.flur.ee/ledger#", "wiki": "https://wiki-example.com/ns/", "schema": "http://schema.org/" },
"select": { "?article": ["schema:name", "wiki:content", "wiki:modifiedAt"] },
"where": { "@id": "wiki:articles/dev-setup" },
"opts": {
"history": true
}
}

Point-in-Time Query​

See the wiki as it was on a specific date:


{
"select": { "?article": ["schema:name"] },
"where": { "@id": "?article", "@type": "wiki:Article" },
"opts": {
"t": "2024-01-20"
}
}

Change Log​

Track who modified what:


{
"history": {"@id": "wiki:articles/dev-setup"},
"opts": {
"showAssertions": true
}
}

This returns the complete change history with timestamps and assertions/retractions.