Steganographic Channels: A History and Formalization of Encoding in Plain Sight

A history and formal theory of steganographic communication — the practice of encoding messages within carriers that operate in plain sight, filtering audiences by who can recognize the payload. Nine historical lineages are analyzed through a five-component formal structure (carrier, payload, key, noise, filter): African American Spirituals, Sufi Poetry, Troubadour Poetry, Alchemical Texts, Blues, Hip-Hop, Soviet Samizdat, British Polari, and Scientific Encoding. The framework is then applied to the Crimson Hexagonal Archive's own steganographic channel — operating across three substrates: a poetry blog (2,183+ posts, carrier: defunct blog; payload: operative specifications), a Zenodo DOI network (370+…