I should have been clearer. I am not saying that the Blockchain ledger would replace existing databases. Blockchain for access control would allow an application to determine if a participant has access (authentication, e.g. via encrypted credentials or a certificate) and could also include authorization information (what information can be seen).
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I should have been clearer. I am not saying that the Blockchain ledger would replace existing databases. Blockchain for access control would allow an application to determine if a participant has access (authentication, e.g. via encrypted credentials or a certificate) and could also include authorization information (what information can be seen).