Table 2.

Review of blockchain systems in healthcare.

Name	Type of System	Description
MedBlocks [56]	Electronic medical records (EMR)	P2P filesystem made immutable using distributed ledger technology, for storing medical records. Strength: improved consensus mechanism to ensure the network is not overloaded
Secure Health Chain [57]	EMR	Stores electronic personal medical records on a blockchain and ensures that only authorized parties, who have been granted permission, can access data.
MedicalChain [58]	EMR	Decentralized platform that enables storage, exchange and use of medical data. It enables the user to give healthcare professionals access to their personal health data.
Doc.AI [59]	Generate insights from medical data	Enterprise AI platform that uses natural language processing, computer vision and blockchain to generate insights from medical data.
OmniPHR [60]	PHR	Distributed system for storing patient health data. It stores different patient datasets into different blocks on the chain
MIStore [61]	Medical Insurance Storage System	A blockchain-based medical insurance storage system