Documents are the source of truth
Every uploaded record receives a permanent Document ID with archive, language, citation and OCR text preserved.
Historical evidence engine
Reconstructing Ottoman Sephardic families from primary documents.
OSFN is not a family tree. It is a research platform where every person, alias, migration and relationship is traceable back to the record that proved it — across Hebrew, Ladino, Turkish, Italian, French and beyond.
No fact without evidence
Each extracted fact links to its document, page and image coordinates, with a confidence score and reviewer trail.
Conflicts coexist
Nothing overwrites anything. Competing birth dates, aliases and parentage live side by side until evidence resolves them.
The AI never invents
It proposes matches, explains its reasoning and assigns confidence. The researcher always makes the final decision.