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autonomic identifier

Definition

An identifier that is self-certifying and self-sovereign (or self-managing).

A self-managing cryptonymous identifier that MUST be self-certifying (self-authenticating) and MUST be encoded in CESR as a qualified cryptographic primitive. An AID MAY exhibit other self-managing properties such as transferable control using key pre-rotation which enables control over such an AID to persist in spite of key weakness or compromise due to exposure. Authoritative control over the identifier persists in spite of the evolution of the key-state.
Source Samuel M. Smith, ietf-keri draft

Autonomic Identifier more general

Autonomic Identifiers have been pretty well described in this piece as opposed to centralised (administrative) and blockchain-based (algorithmic) identifier systems: Architectural types of Identity Systems; originally by Phil Windley in this article.

A summarizing comparison table might say more than a hundred words:

summarising the trust bases of administrative, algorithmic and autonomic identifier systems