Academic claim verification + fact-check — peer-reviewed source validation against Semantic Scholar, OpenAlex, Perplexity. Returns SUPPORTED / MIXED / DISPUTED / INSUFFICIENT verdict with confidence score and cryptographic receipt (ECDSA P-256, audit-ready). Detects predatory journals, fake DOIs, hallucinated papers. For research agents, scientific due diligence, regulatory dossiers (EMA, EFSA, FDA), academic compliance. ~17s, premium tier.

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