Okla. Stat. tit. 12, § 12-2901

A. The requirement of authentication or identification as a

condition precedent to admissibility is satisfied by evidence

sufficient to support a finding that the matter in question is what

its proponent claims it to be.

B. The following are illustrative examples of authentication or

identification conforming with the requirements of this Code:

Oklahoma Statutes - Title 12. Civil Procedure Page 487

1. Testimony that a matter is what it is claimed to be;

2. Nonexpert opinion as to the genuineness of handwriting,

based upon familiarity not acquired for purposes of the litigation;

3. Comparison by the trier of fact or by expert witnesses with

specimens which have been authenticated;

4. Appearance, content, substance, internal patterns or other

distinctive characteristics taken in conjunction with circumstances;

5. Identification of a voice, whether heard firsthand or through

mechanical or electronic transmission or recording, by opinion based

upon hearing the voice at any time under circumstances connecting it

with the alleged speaker;

6. Telephone conversations by evidence that a call was made to

the number assigned at the time by the telephone company to a

particular person or business if:

a. in the case of a person, circumstances, including

self-identification, show the person answering to be

the one called, or

b. in the case of a business, the call was made to a

place of business and the conversation related to

business reasonably transacted over the telephone;

7. Evidence that a writing authorized by law to be recorded or

filed and in fact recorded or filed in a public office, or a

purported public record, report, statement or data compilation, in

any form, is from the public office where items of this nature are

kept;

8. Evidence that a document or data compilation, in any form:

a. is in such condition as to create no suspicion

concerning its authenticity,

b. was in a place where it, if authentic, would likely

be, and

c. has been in existence twenty (20) years or more at the

time it is offered;

9. Evidence describing a process or system used to produce a

result and showing that the process or system produces an accurate

result; or

10. Any method of authentication or identification provided by

statute or by rules prescribed by the Supreme Court pursuant to

statutory authority.