Verify Private Documents

Verify Private DocumentsYour evidence stays the source of truth.

Upload a confidential document and the AI-assisted work product that relies on it. Rubicon verifies each claim against the source text and produces an independent certificate.

How it works

Your private evidence is the source of record.

Rubicon verifies AI-assisted work product against the confidential material you provide. No legal citator is required.

Upload your document

Contracts, diligence materials, policies, client documents, and internal records remain the source of truth.

Paste the AI's output

The summary, memo, extraction, or analysis produced by Harvey, Lexis AI, CoCounsel, Copilot, Claude, ChatGPT, or another tool.

Receive a verification certificate

Claim-by-claim verification traced to specific source passages. Evidence-backed, hashed, and ready for the matter file.

No citator required. Rubicon operates entirely against your uploaded document. No Westlaw. No CourtListener. No third-party data agreement.

Evidence

What independent verification catches.

An AI-assisted summary of a private agreement can look polished while misstating financial terms, legal standards, or obligations. Rubicon checks the work against the actual source.

Errors detected

Payment due in 45 days. Document says 30.
Liability cap stated as 6 months. Document says 12.
Confidentiality survival: 3 years. Document says 5.
Termination for convenience. Document says cause.
Liability cap presented as universal. Three carve-outs omitted.
15% termination fee. Fabricated. Not in the document.

Verdict: HALLUCINATION_DETECTED

Confidence score 0.25. The AI achieved 31% accuracy across 13 claims. Three financial terms fabricated. Two numerical values understated by 40-50%. One legal standard mischaracterized.

SHA-256: 028d31f6f746a4a9...

Works with every platform

Harvey, CoCounsel, Lexis AI, Copilot, or any other tool. Generate with the platform of your choice. Verify with Rubicon. Attach the certificate to the matter file.