This essay develops conceptual art as the protocol layer within a system of ten interdependent fields. If linguistics provides structure, conceptual art provides execution. Protocol transforms vocabulary into operation through instructions, procedures, and repeatable actions. The work is therefore understood as an executable structure capable of being deployed across platforms and contexts. In relation to the other fields, protocol activates linguistic structure, produces propositions that enter epistemic validation, feeds recursive operations in systems theory, generates architectural structures through publication, distributes outputs territorially, materialises through media formats, enables morphogenetic growth through repetition, produces circulation through movement, and becomes stabilised through infrastructure. Conceptual art is therefore the operational engine of the system.