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An external researcher can submit a structured paper through the canonical client and have it appear in the corpus and be queryable through the API. The v3 revision of this paper entered the corpus through the open ORCID submission flow on rrxiv.com; since July 2026 the same flow is open to any ORCID holder, gated by hCaptcha; the reference client installs from PyPI (pip install rrxiv).