Question

How can a blockchain be used to manage sharing of personal records?


by requiring a proof-of-work for access


by storing consent and revocations to access the off-chain records


by mandating that each individual participant enters a smart contract


by creating a consensus mechanism for entering data


I don't know this yet.

Answer 1

Answer:

Blockchain transactions allow users to control their data through private and public keys, allowing them to own it. Third-party intermediaries are not allowed to misuse and obtain data. If personal data are stored on the blockchain, owners of such data can control when and how a third party can access it.