Okla. Stat. tit. 19, § 19-293: Duty when instrument offered for record

The register of deeds shall, whenever an instrument shall be

presented to him for record, immediately note on the instrument the

year, month, day, hour and minute of receiving the same, and the

date of record of such instrument shall be from the date of filing;

he shall then enter the same on the receiving book, making all the

entries in the appropriate columns as herein provided, and shall as

soon thereafter as practicable, record said instrument in the proper

record, enter it upon the proper indexes, and over his signature and

seal note the book and page on which said instrument is recorded.