Other Oklahoma Certificates Sort By Featured Price (Low/High) Price (High/Low) Products (A/Z) Products (Z/A) Copy Certification by NotaryDetails If no other copy certification wording is prescribed, this certificate may be used by Notaries to certify true copies of original documents — if state law so allows. Pad of 100 certificates. Verification on Oath or Affirmation Details This certificate may be used when an individual is signing and swearing (or affirming) that certain written statements are true. Pad of 100 certificates. Witnessing or Attesting a SignatureDetails The Signature Witnessing or Attesting certificate is used to determine that the signature appearing on a document is that of the person appearing before the Notary and named in the document. Pad of 100 certificates.