Investor Due Diligence

How to Verify a Company Is Legitimate Before Investing

Before you invest, you need to confirm the company is real, has no hidden red flags, and its claims match public records. Here is the manual process investors use, and how Cortex AIF automates it with code-verified evidence.

Run a free check →See pricing

The Manual Due Diligence Process

To verify a company yourself, start by searching the company name plus words like 'scam', 'lawsuit', or 'complaint' on search engines and social media. Then look up the legal entity in the relevant company registry: Companies House for UK, Secretary of State for US, or EU business registers. Check the domain age using WHOIS and the Wayback Machine to see how long the website has been active. Finally, read independent reviews on platforms like Trustpilot or Better Business Bureau, but be aware that reviews can be gamed.

After gathering this information, you must reconcile it all manually. This process is time-consuming and error-prone, especially when claims involve numbers or dates that need cross-referencing.

Why Self-Reported Trust Signals Are Not Enough

Many companies display a 'Verified' badge or feature testimonials on their website. These are not independent proof. A paid badge only shows the company paid for a service, not that it is legitimate. Testimonials can be fabricated or cherry-picked. Similarly, a company's own marketing materials are not reliable sources for verification.

Independent verification requires checking claims against external, authoritative records. That is what Cortex does.

How Cortex Does This - Code Is the Judge, Not the Model

Cortex AIF is not an LLM that guesses answers. It uses Python code to check each claim a business makes against real records: company registries, SEC filings, domain history, and independent review platforms. Each claim is stamped VERIFIED, PARTIALLY_VERIFIED, UNVERIFIED, or CONTRADICTED. Any number or figure without a source proof is deleted—never fabricated.

The result is a GO / NO-GO recommendation with per-claim evidence, so you see exactly what was checked and what was found. This replaces hours of manual research with a single, reliable report.

Contrast with ChatGPT and Paid Badges

ChatGPT answers from its training data, which may be outdated or incorrect. It cannot open live records or verify a company's current status. It may also fabricate sources. In contrast, Cortex accesses real-time data and never makes up evidence.

Paid 'Verified' badges and self-reported reviews are not independent. Cortex uses only objective, third-party sources, giving you evidence you can trust.

What Cortex Does Not Do

Cortex verifies public/external truth. It does not replace a forensic accountant reviewing a company's private books. It cannot access internal financial statements or non-public contracts. However, for the vast majority of investor due diligence, the public record is sufficient to spot red flags.

Use Cortex as your first line of defense before committing any money.

Get a Verification Report Before You Invest

Don't rely on guesswork or paid badges. Let Cortex check the company's claims against real records. You will receive a clear GO / NO-GO with evidence for each claim.

Start your verification now and invest with confidence.

Run a free Home > Resources > How to Verify a Company Before Investing check

Describe your setup or paste your documentation. Get a sourced, per-requirement status in minutes.

Start free check

Frequently asked questions

How is Cortex different from a background check service?
Cortex focuses on verifying specific claims a business makes (e.g., '10,000 customers', 'SEC registered') against authoritative sources. A background check typically provides a general report. Cortex gives you per-claim evidence and a GO/NO-GO recommendation.
Can Cortex verify a private company's financials?
No. Cortex verifies public/external claims. It cannot access private financial statements. However, it can verify claims about registrations, domain history, and public reviews.
What sources does Cortex use?
Cortex uses company registries (e.g., Companies House, US Secretary of State), SEC filings, WHOIS/domain history, and independent review platforms. It never uses the company's own website as a source.
Is Cortex a replacement for legal or financial advice?
No. Cortex provides evidence-based verification, but it does not constitute legal or financial advice. Always consult a qualified professional before making investment decisions.