# Register Source Material > Bring corpus files and catalogs into Papyrus as references—intake work, not published copy. By Papyrus Editorial Team · Published 2026-05-22 Canonical: https://read.p.apyr.us/how-to/howto-register-source-material/ Registration bridges source material and newsroom curation. It does not publish anything; it creates reference records, attachment metadata, and intake work so humans and agents can decide what the graph should trust. For catalog-backed imports, use \`npm run content -- references register-catalog --config corpora/papyrus-steering.yml --corpus-key \ --catalog \ --status pending --ingestion-rationale \ --apply\`. Files remain in the corpus/S3 pattern. Papyrus records the editorial layer: what the reference is, where it lives, how it entered, and its curation status. Research packets can propose references. Treat proposals as prospects until they are registered and curated—proposed links are not accepted evidence because an agent found them.