ABSTRACT
Blockchain is a sort of database that can be used to securely and permanently store data that is entered into the blockchain ledger and cannot be changed or destroyed. It's a database shared by various parties, including banks, insurance companies, hospitals, patients, and doctors. Because mistakes are made while moving information from one system to another, whether due to human error or malicious attack, every transaction in the blockchain ledger will have its own identification number and will use encryption for security and privacy. The research is a discussion about Types of blockchain technology's in the healthcare industry and points out three applications as An electronic health record that provides security and privacy, A platform called MiPasa uses smart contact tracing applying Hyperledger Fabric based framework, and the telecare system that applies sensors to store medical records and monitors patient's condition. The proposed applications are good examples that can be applied to the health sector in the Kingdom of Bahrain. © 2022 IEEE.