How to check your business partner
Due diligence in five minutes: verify professional history, digital footprint, and red flags before you sign anything.
Before you hand someone access to your company (equity, bank account, API keys, clients), know who they are online and on the record. CheckMate.bio won't replace a formal background check, but it gives you a fast, cheap first pass on their online footprint, and the free public registries below cover much of the rest.
What to look for
- Professional presence: profiles on professional networks, code hosts, portfolio sites and publishing platforms, in the report or by searching their name. Does the footprint match their pitch?
- Money: payment, fintech and crypto accounts. Their presence isn't damning, but their complete absence when the person claims fintech experience is a flag.
- Consistency of identity: same name, same photo, same bio across platforms suggests a real professional presence. Inconsistent usernames or display names with different biographies sometimes mean something.
- Adjacent categories: 'Forum', 'Porn' or 'Gambling' accounts aren't disqualifying by themselves, but they add texture. A partner who says they're grinding seven days a week and has a very active gaming or streaming footprint is someone you should ask questions of.
Running the check
- Enter the partner's primary professional email at checkmate.bio. If they have a separate personal email, run that too: people often maintain a cleaner front with work addresses. The free scan takes about a minute.
- Skim the category counts on the free result. Unusually low counts for a claimed public figure are themselves data: they've either scrubbed their presence, or it was never there.
- Unlock the detailed report ($0.99; it takes up to 5 minutes, or $2.99 for a bundle of 5 and $4.99 for a bundle of 10 if you're checking several people) and look at the 'Business', 'Jobs', 'Dev', 'Finance' and 'Crypto' categories first.
- Open each profile link. Compare the role titles they claim with their published work, code or writing. Inflated experience often shows up as a thin track record behind a confident profile.
- Look at the 'Account created' dates where the site provides them. A professional profile from 2009 with years of activity is different from one created last month.
Public records worth checking next
An email lookup shows someone's online footprint. Their business history sits in public registries, and in the US most of them are free or cheap to search:
| What to check | Where (US) | What it tells you |
|---|---|---|
| Companies they say they founded or run | The business registry of the state where the company was formed, usually run by the Secretary of State | Whether the company exists, when it was formed and its registered agent; some states charge for more detail, such as current status. |
| Federal lawsuits and bankruptcies | PACER, the federal courts' records system: 10 cents a page, free if you spend $30 or less in a quarter | Federal civil and criminal cases and bankruptcy filings. State and county cases are searched at the local court. |
| Public-company roles and filings | SEC EDGAR | Filings by companies, and by officers, directors and major shareholders of public companies. |
| Past work as a stockbroker or investment adviser | FINRA BrokerCheck | The last 10 years of employment, current licenses, and any customer disputes or disciplinary history. |
| Sanctions | OFAC Sanctions List Search | Whether the name, or a near-match, appears on the Treasury's SDN list or its other sanctions lists. |
A name match in any registry needs the same care as a username match in a report: confirm it's the same person through middle names, locations or dates before you act on it.
Questions to ask them directly
- Which previous ventures did you found or run, and what happened to each? Then check the answers against the registries above.
- Who can I speak to from your last two roles or companies? A good partner offers references before you ask.
- Have you been party to a lawsuit, bankruptcy or regulatory action? The answer matters less than whether it matches the record.
- Is anyone else entitled to a share of what you're bringing in: a former co-founder, an investor, an employer with IP rights?
What good results look like
A solid business partner usually has a coherent, long-tailed digital footprint: a professional profile with real history, a personal site or published work that matches their stated expertise, and accounts consistent with the story they tell. You want breadth, consistency and age, and you want the claims in their pitch to match what you can verify independently.
When you need a formal background check instead
If you're hiring this person as an employee, or deciding on credit, housing or insurance for them, a background report used for that decision falls under the US Fair Credit Reporting Act: it has to come from a consumer reporting agency, and an employer needs the person's written permission before getting one. CheckMate.bio's Terms of Use forbid using its reports for those decisions. For choosing a co-founder or a partner, the email lookup and the public records above are a sensible first pass; for a large investment, add a lawyer's due diligence.
What the results actually mean
CheckMate.bio groups findings into categories ('Social Media', 'Gaming', 'Dating', 'Finance', 'Business' and more) and attaches a confidence score to every match. A score of 80% or higher means the email is almost certainly linked to that service. A score between 50% and 80% is a likely match. Anything below 50% lands in the 'Possible matches' section and should be treated as a weak signal, not a verdict.
- Categories show the kind of accounts that exist: the shape of someone's online footprint.
- Per-service fields (usernames, display names, bio text, last active dates) help you confirm whether the match is really the person you care about.
- Confidence scores help you separate solid matches from noise. Treat low-confidence hits as leads to investigate, not as proof.
A note on ethics
CheckMate.bio indexes public and breach-derived data. It does not grant access to private messages or full passwords (passwords from breach records are always masked), or to anything you wouldn't be able to find with enough patience and the right search queries. Use it for the same reasons you'd Google someone: safety, due diligence, re-connecting with people, or simply knowing what a public profile says about you. Be honest about your reasons, and respect the answer you get.
Sources
- Corporate Registration, National Association of Secretaries of State
- Division of Corporations entity search, State of Delaware
- Find a Case (PACER), Administrative Office of the U.S. Courts
- PACER Pricing: How Fees Work, Administrative Office of the U.S. Courts
- Search Filings (EDGAR), U.S. Securities and Exchange Commission
- Investor Bulletin: Insider Transactions and Forms 3, 4, and 5, U.S. Securities and Exchange Commission
- About BrokerCheck, FINRA
- How to Search OFAC's Sanctions Lists (FAQ), U.S. Department of the Treasury, OFAC
- Background Checks: What Employers Need to Know, Federal Trade Commission