Bangkok Notary Services Guide – Certified True Copy vs Signature Authentication
One of the most common questions we receive is:
“Do I need a Certified True Copy or Signature Authentication?”
The answer depends on the purpose of the document.
What Is a Certified True Copy?
A Certified True Copy confirms that a photocopy matches the original document.
Examples include:
- Passport Copies
- Driver’s Licenses
- Utility Bills
- Educational Certificates
- Company Registration Documents
The notary compares the copy against the original and certifies its accuracy.
What Is Signature Authentication?
Signature Authentication verifies that the individual personally signed the document in the presence of the notary.
Examples include:
- Powers of Attorney
- Affidavits
- Contracts
- Declarations
- Authorization Letters
The notary confirms the signer’s identity and witnesses the signing process.
Which Service Do I Need?
| Document Type | Service Required |
|---|---|
| Passport Copy | Certified True Copy |
| Degree Certificate | Certified True Copy |
| Power of Attorney | Signature Authentication |
| Affidavit | Signature Authentication |
| Consent Letter | Signature Authentication |
| Bank Statement Copy | Certified True Copy |
Frequently Asked Questions
Can I sign the document before meeting the notary?
It is generally recommended to sign in the presence of the notary unless instructed otherwise.
Do I need my original passport?
Yes. Original identification is normally required for identity verification.
Can both services be performed during the same appointment?
Yes. Many clients require both certified copies and signature authentication during a single visit.
Conclusion
Understanding the difference between Certified True Copy certification and Signature Authentication helps ensure that the correct notarization service is obtained the first time, avoiding unnecessary delays and additional costs.
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