Design of A Blockchain-based Employee Attendance System

Blockchain system is distributed and decentralized that make it can be applied to develop a tamper proof-employee attendance system. There are many attendance systems have been developed but most of it still use conventional systems and databases that have not been distributed yet. A conventional databases do not have special features in checking whether a piece of information has experienced unauthorized changes. On a blockchain based system, no administrator permission is allowed to editing or deleting data. Someone who inserts an information record on the blockchain will not be able to deny that he is doing the activity. Each party on the blockchain has access to the whole database and history. The blockchain-based employee attendance system is required to provide a database that keeps its reliability and integrity and tamper proof.