blockstream are helping the banks and governments make a new system. its called hyperledger.
its not going to be a open platform for users to be free from bankers control. its going to be more control given to bankers and government.
yes medical records, bank records, tax record, driving licence, child support, passports will all be relationally linked to each other
bitcoin is being held back due to it.
https://www.hyperledger.org/about/members - general members - blockstream
blockstream are using bitcoin as the sandbox/testbed for hyperledger. slowly centralizing bitcoin and holding it back while then expanding hyperledger so that bitcoin cant compete