How do I verify AI legal research before filing?

Verify by independently confirming every cited authority exists, says what the brief claims, and remains good law — using authoritative sources rather than trusting the AI's summary — and by documenting that the check occurred. The duty of candor makes this…

register 09 · Compliance pins· AI Citation Sanctions
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Answer.

Evidence / professional-responsibility rule · AI Citation Sanctions.

Verify by independently confirming every cited authority exists, says what the brief claims, and remains good law — using authoritative sources rather than trusting the AI's summary — and by documenting that the check occurred. The duty of candor makes this non-delegable. Planisphere measures how a research tool behaves and whether it drifts, which informs how much to trust it, but it does not perform citation-checking; the verification and the legal judgment are the lawyer's.

Cite-anchor: AI hallucinated-citation sanctions — Rule 11 / Rule 9011 certification and MR 3.3 candor · Fed. R. Civ. P. 11; Fed. R. Bankr. P. 9011; ABA Model Rule 3.3; exemplar Johnson v. Dunn (N.D. Ala. 2025)

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The mark behind the answer.

AI Citation Sanctions sets the bar an AI output must clear before a tribunal or a client relies on it — reliability, can…

hallucinated-authority sanctions wave · Rule 11 / 9011 · candor-to-tribunal.

→ Full reference for AI Citation Sanctions

Try AI Citation Sanctions with a free test key.

Start with the free sandbox. Planisphere measures model behaviour and emits a reproducible, sha-pinned record — it does not certify, file, or give legal advice.

API ·

When AI Citation Sanctions asks for proof, hand over records — not assurances.

record the duty · seal the receipt · verify offline

Planisphere records each duty event — an output marked, a disclosure shown, a review made — and seals it into a receipt that verifies offline against our published keys. You send hashes, never content. A record is evidence a third party can check; it is not a certification and not a legal determination.

See how a record is checked · See the law Toolkit →