Okla. Stat. tit. 60, § 60-674.2: Property delivered to the State Treasurer

A. If any claimant asserts an interest in any property

delivered to the State Treasurer in which the owner of the property

is determined to be deceased, the State Treasurer shall not pay over

or deliver to the claimant property as provided in Section 651 et

seq. of this title, unless the claimant provides a certified copy of

court or other lawful documents establishing entitlement to the

decedents' unclaimed property.

B. If the value of the property at the time the claim is to be

paid is Ten Thousand Dollars ($10,000.00) or more, the claimant

shall provide a certified copy of a record that provides evidence of

the death of the owner of the property issued by any government

authority who maintains such records.

C. If the unclaimed property account was previously held by a

bank, credit union, or savings and loan association, a claimant may

use the small estate affidavit provided for under Section 906 of

Title 6 of the Oklahoma Statutes.

D. The State Treasurer may require other reasonable

documentation, in addition to the items listed in subsections A, B,

and C of this section, to determine the validity of the claim.