Exploring Blockchain Based Identity Management Solutions
Within Distributed Ledger Technology (DLT), it enables everyone in the network to have the same source of truth about which credentials are valid and who attested to the validity of the data inside the credential without revealing the actual data. This can be directly applied to Identity Management.
So looking forward, there are three main actors in play when it comes to Identity management on the Blockchain, these are: Identity owners, Identity Issuers, and Identity verifiers.
Identity owner: Stores the credentials in their personal identity wallet — to be later used to prove a statement about his or herself to a third party (verifier).
Identity Issuers: A trusted party such as local government that can issue personal credentials for an identity owner (user) — by issuing the credentials, the issuers attests to the validity of the personal data in those credentials.
Credentials must be issued by a second party who attests to the validity of the data inside the credential. The usefulness and reliability of the credential depend fully on the reputation of the issuer.
So boiling it down a little bit, through the infrastructure of the Blockchain, the verifying parties do not need to check the validity of the actual data in the provided proof but can rather use the Blockchain itself to check the validity of the attestation and attesting party (government perhaps) from which they can then determine whether to validate the proof.
The validation of the proof is based on the verifiers judgement of the reliability of the attester