The Problem of Digital Identity (Logically Speaking)

The problem of digital identity can be reduced to a simple logical model consisting of an identifier, an authenticator and a claim within a context, all of which, can be attributed to an entity.

From this model a set of logical propositions can be produced:

  1. Identifiers, authenticators and claims exist and are only valid within a context.
  2. An identifier is associated with an authenticator
  3. An identifier is associated with a claim.
  4. An identifier is attributed to a entity.

Using the above, within a given context, a digital identity can be regarded as:

  1. Proof of control of an identifier that is associated with authenticator
  2. Proof of ownership of a claim that is associated with an identifier

From this, we can say:

  1. A digital identity can be regarded as a claim that is attributed to an entity through Proof of control and Proof of ownership.

That’s it.

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