Get a Document Notarized with Two or More Signers
Proof offers three flexible online notarization methods—co-located, concurrent, and split signing—to accommodate documents requiring multiple signers, each of whom must have a valid photo ID, U.S. SSN or ITIN (or biometric verification), a U.S. address, email, and a device with audio/video, with sessions supporting up to 10 connected devices including notaries, signers, witnesses, and contacts.
The short answer: If your document requires more than one signer, Proof offers three flexible signing methods to accommodate everyone involved. Each signer will need a valid photo ID, a U.S. SSN or ITIN, and a device with audio and video.
1. Signing Methods
- Co-located Signing: All signers meet in the same session on a single device. Everyone is physically in the same room and joins the notary meeting together.
- Concurrent Signing: All signers join the same notary session simultaneously from separate devices. Everyone is in different locations but completes the signing at the same time.
- Split Signing: Signers meet with a notary in separate sessions at different times. This is ideal when signers are unable or unwilling to join at the same time.
Technical Capacity: A single meeting can support up to 10 connected devices. This includes one notary and one primary signer. The remaining slots can be any combination of additional signers, witnesses (max 2), or real estate contacts.
2. Requirements for Each Signer
Each participant will generally need the following:
- Identity Verification: A U.S. Social Security number or ITIN for Knowledge-Based Authentication (KBA). If you don't have these identifiers, you may be prompted to use biometric selfie verification instead.
- Valid Photo ID: A government-issued ID for credential analysis.
- Contact Info: A U.S. address and a valid email address.
- Technology: A device with functional audio and video capabilities.
Some documents have specific ID requirements. Always follow the instructions provided with your document or review the list of acceptable forms of ID for online notarization.
3. How to Get Started
1. Upload and Invite
Upload your document to begin. Enter your email and create a password to get started.
2. Add Signers
When asked who needs to sign, select Multiple People. Then provide the email addresses for all additional signers. You can click Add Another Signer to include everyone involved.
Important: Signer details (including email addresses and notarization requirements) cannot be changed after this step. If an error is made, you will need to delete the current transaction and start over, provided no signers have joined a meeting yet.
3. Signers Receive Invitations
Each signer will receive an automated email with a unique link to access and complete the document.
Pro tip: If signers join from different devices, they can leave the meeting once their portion is complete. If a signer loses their connection, the remaining participants can continue — the disconnected signer can finish their portion in a separate session later.
4. Payment and Completion
To keep things simple, the last signer pays the total transaction fees at the end of the final session. This ensures that fully notarized documents are released to all parties immediately upon completion.
For a full breakdown of fees, check out the relevant support article on notarization costs.
✓ Summary Checklist
- Choose your signing method: co-located, concurrent, or split signing.
- Each signer needs a valid photo ID, SSN or ITIN, U.S. address, and a device with audio and video.
- Upload your document, select Multiple People, and enter each signer's email address.
- The last signer pays the total transaction fees at the end of the final session.
Still unsure? For questions about multi-signer transactions, contact Proof Support.
Related
What to Expect During Online Notarization with Proof
The article explains the step-by-step process of online notarization with Proof, detailing how users can start by uploading documents themselves or responding to an invite, then proceed through entering personal information, confirming location, and verifying identity to complete the notarization securely and efficiently.
Proof Business Pro
Proof Business Pro is a comprehensive, pay-per-transaction platform offering online notarization starting at $25 per meeting, identity verification from $4 per person, and eSignature services at $4 per transaction, designed to streamline business operations with automated transaction management, robust security, and flexible workflows that enhance efficiency, reduce errors, and provide seamless, secure customer interactions anytime, anywhere.
Identity Verification Overview – Proof Help Center
Proof's identity verification for notarizations varies by notary commission state and transaction type, offering four methods: IAL2-compliant verification (credential analysis plus selfie comparison), multi-step verification (combining knowledge-based authentication, credential analysis, and/or selfie comparison), personal knowledge of identity (notary personally knows the signer), and credible identifying witness (a verified witness vouches for the signer).
Skip Identity Verification if Notary Personally Knows Signer – Proof Help Center
The Proof Help Center explains that for single-signer transactions where the notary personally knows the signer, Notaries Sourcing Transactions (NST) and enabled In-House Notaries (IHN) can use the Personally Known to Notary (PKN) method to bypass Knowledge-Based Authentication and Credential Analysis, streamlining the process by selecting the "Personally known to notary" option during transaction setup, though this method is restricted to new, internal transactions with single signers and is unavailable to On-Demand Notaries (ODNs) or overflowed transactions.
What You Need for Online Notarization
To complete an online notarization, you must be at least 18, have six months of credit history, a U.S. address, and a U.S. document intended for use in the U.S., and be prepared with a U.S. SSN or ITIN for identity verification, a government-issued photo ID (and possibly a secondary ID), a valid email, and a device with audio and video capabilities to ensure a secure and compliant live video session.
Where Documents Notarized on Proof Can Be Legally Used
Documents notarized through Proof are legally valid only within the United States, as the platform supports nationwide online notarization using U.S.-based identity verification, but it does not meet the international requirements such as apostilles needed for documents intended for use outside the U.S., for which traditional notarization is recommended.