Check Originality

Multi-method originality check that catches the overlap which actually gets papers desk-rejected or retracted — before an editor's integrity scan does.

Read this honestly and tell the user: this is not iThenticate or Turnitin. It has no access to any private publisher corpus, so it cannot guarantee a passage is original against all published literature. What it does reliably is detect overlap against sources you can name or fetch, internal text recycling, and distinctive phrases that are publicly searchable. For a journal's official originality report you still need the publisher's tool — this gets your draft clean first.

When to use

• Before submission, to catch accidental copy-paste and close paraphrase.
• When reusing your own prior work (text recycling / self-plagiarism is a real violation at most venues even though it's "your" text).
• When a co-authored draft may contain a collaborator's verbatim text from elsewhere.
• After heavy AI drafting, to confirm nothing was reproduced verbatim from a source.

The detection methods (run several — that's what "catch it properly" means)

See references/detection-methods.md for the full method and thresholds.