The Pyrana Context Engine replaces opaque chunk retrieval with the Context Unit, an atomic and content-addressable claim that is linked to verbatim evidence, classification tier, lifecycle state, and graph context so that each retrieved fact has structured accountability metadata.

It replaces opaque chunk retrieval with the Context Unit (CXU):

— Beyond Retrieval - Pyrana Context Engine Whitepaper.pdf

an atomic, content-addressable claim

— Beyond Retrieval - Pyrana Context Engine Whitepaper.pdf

linked to verbatim evidence, classification tier, lifecycle state, and graph context

— Beyond Retrieval - Pyrana Context Engine Whitepaper.pdf