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Position paper defines a five-field identity model for physical cells, suggesting a new framework for understanding identity.
This specification-only design and position paper presents the five-field Physical Cell Identity Model defined by ACP-0001: cell_id, profile, instance_id, lifecycle, and identity_binding. It separates physical-cell identity from ecosystem registration, digital-agent identity, capability, trust, permission, and execution evidence. The paper has not undergone external peer review and does not report a runtime implementation, Schema migration, interoperability result, security validation, physical deployment, empirical superiority, or independent external validation. Protocol source: https://doi.org/10.5281/zenodo.21442282.
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Zhang et al. (2026) studied this question.
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