Under the supervision of the Dean of the Faculty of Computer Science and Information Technology, Dr. Ahmed Jalak Shaker, the Faculty discussed the master's thesis tagged Blockchain Technology in the payroll management system at Kirkuk University. The letter presented by the student Mahmoud Ma 'ruf Ahmad included the use of blockchain technology in the payroll management system at Kirkuk University kuk. (ECC) Elliptic Curve Cryptography and connecting the blocks to a SHA-256 algorithm with a three-yolk starter to improve the security of the blockgain network through high-specification servers to increase data synchronization and issue the payroll report faster when applied. The study concluded the importance of building an electronic pay system based on smart contracts in blockchain technology.