Independent Software agents increasingly act on behalf of people across communication, automation, and decision-making contexts. These agents initiate actions, delegate tasks, and interact with other agents without a consistent model for representing the human who authorized them, the scope of authority they possess, or the provenance of their actions across ecosystems. This document defines an architectural model for human-anchored agent identity. The model introduces a human identity root, explicit delegation semantics, and a provenance structure that enables ecosystems to determine whether an agent is legitimate, whether it is acting within its intended authority, and how its actions relate to a responsible human. This document does not define a protocol or wire format. It provides an architectural foundation that existing systems may bind to in order to support accountable, interoperable, and human-aligned agent ecosystems.