Functional choreographic programming suggests a new propositions-as-types paradigm might be possible. In this new paradigm, communication is not modeled linearly; instead, ownership of a piece of data is modeled as a modality, and communication changes that modality. However, we must find an appropriate modal logic for the other side of the propositions-as-types correspondence. This paper argues for doxastic logics, or logics of belief. In particular, authorization logics -- doxastic logics with explicit communication -- appear to represent hierarchical choreographic programming. This paper introduces hierarchical choreographic programming and presents Corps, a language for hierarchical choreographic programming with a propositions-as-types interpretation in authorization logic.

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