Blockchain by definition is a distributed, immutable ledger, or database that stores records, known as blocks.
These can store various kind of information, in the case of cryptocurrency, often blocks store information about financial transactions.
Once a block is added to the Blockchain, it is immutable, which results in improved data accuracy and maintenance. Such technology could potentially revolutionize healthcare area and medical records.
So by having healthcare built on blockchain systems, important related data can be more easily accessible amongst healthcare providers, which can lead to a better and faster treatment for everyone.
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From @junior1992