Okla. Stat. tit. 19, § 293

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.