citation-verification-4-layer-pattern-for-zero-hallucination
AutoResearchClaw implements a 4-layer citation verification chain: arXiv ID resolution → CrossRef/DataCite DOI lookup → title string match → LLM relevance scoring. Each layer must pass before a citation is accepted. This is the production-grade anti-hallucination pattern for academic references. The Oracle stack had zero citation integrity before this integration; the extracted citation verifier utility should be usable by any Oracle agent as a standalone MCP tool (researchclaw_verify_citations).