Step one: verify the notary commission
Notaries in the US are commissioned at the state level (and occasionally the territory or DC level). The state Secretary of State or equivalent agency maintains a commission registry. The information that matters for verification:
- Commission name. The notary's legal name as it appears on the commission.
- Commission number. Assigned by the state on commissioning.
- Commission status. Active, expired, suspended, or revoked.
- Commission term. Start date and expiration date.
- County of commission. Some states require notarial acts within the county; others authorize statewide acts.
- RON authorization. Whether the commission includes Remote Online Notarization authority. Not all commissioned notaries are RON-authorized.
The verification rule: the commission must have been active on the date the notarial act was performed. A commission expired three months ago invalidates a recent notarization regardless of how clean the seal looks.
Remote Online Notarization: the platform audit trail
Most US states have authorized RON via specific statutes since 2018, with adoption accelerating through pandemic-era expansions that became permanent. The MBA/ALTA developed RON standards form the de facto industry baseline. The primary RON platforms in 2026:
- Notarize (now part of the Anywhere brand), NotaryCam, DocVerify, OneNotary, BlueNotary, ProperSign, Signix.
- Real-estate-specific platforms: Pavaso, Snapdocs, Stewart NotaryRecorder.
Each RON act produces a verifiable audit trail: timestamped audio-video recording, identity verification logs (typically knowledge-based authentication plus credential analysis with biometric liveness), the digital notarial certificate, and a cryptographic completion record. The platform retains the record per state requirements (commonly 5 to 10 years).
To verify a RON act, contact the platform with the transaction ID printed on the notarial certificate. The platform confirms the act, the parties, the date, and the underlying audit elements. This makes RON often easier to verify than traditional paper notarization, where the only artifact is the document itself.
When forensic AI handles the paper case
Traditional paper notarization leaves only the document. If the state portal confirms the commission was active on the date of the act, the next question is whether the seal and signature on the actual document are genuine. Forensic AI checks:
- Seal authenticity. ELA on the seal region, font and geometry analysis against the notary's typical impression pattern, copy-move detection (cloned seal from another document).
- Signature authenticity. Biomechanical signature analysis, comparison against signature exemplars where available.
- Notary name and commission number. ELA on the printed name and number fields catches alterations.
- Date integrity. ELA on the date region; date forgery is a common pattern when a commission expired and the forger backdates the act.
- PDF metadata. Producer string consistency with how the notary's typical documents are produced.
See our photoshop and AI document detection guide for the underlying methods. Notarization fraud uses the same forensic surface as other document fraud; the difference is the additional state-portal corroboration available.
A commission expired three months ago invalidates a fresh notarization regardless of how clean the seal looks. The portal date is the decisive check.
The three notarization fraud patterns
- Expired commission backdating. The notary's commission expired; the document is dated within the prior term but was created later. Catch by ELA on the date field plus state-portal commission-term lookup.
- Notary impersonation. Forger uses the name and commission number of a legitimate notary. Catch by direct contact with the notary using portal-listed contact info.
- Cloned or AI-generated seal. Forger fabricates the seal entirely. Catch by forensic AI plus comparison against the notary's actual impression pattern (from earlier authentic documents or platform-stored RON seals).
Frequently asked questions
Where is the notary lookup portal for my state?
Search “[state name] notary public search”. The state Secretary of State or equivalent agency runs it (California Secretary of State Notary Public, Florida Department of State Notary, Texas Secretary of State Notary).
Does an apostille on a notarial act replace verification?
It supplements rather than replaces. The apostille certifies the notary's commission and signature are real for international use, but it adds the competent-authority layer on top of the state commission rather than substituting for the underlying notarization. See our cross-border legalization guide.
Are mobile notaries different from regular notaries?
No. A mobile notary is a commissioned notary who travels to the signer. The commission, the seal, the lookup, and the verification rules are identical.
Can a notary refuse to notarize?
Yes for valid reasons (signer not present, signer's identity not verified, signer not signing willingly, document fundamentally improper). Notaries may not refuse based on discriminatory criteria.
What about RON for transactions in a state that does not authorize RON?
Acceptance depends on the destination state's recognition rules. Most states recognize RON acts validly performed under another state's authorizing statute. A handful of states have more restrictive recognition; verify the destination state's recognition rule before relying on an out-of-state RON act.