The Brandon Caillahua (BC) Alphabet: A Formal Framework for the Decipherment of the Voynich Manuscript

This article presents a complete and reproducible decipherment framework for the Voynich Manuscript based on the Brandon–Caillahua (BC) Alphabet. The proposed model rejects classical substitution-cipher hypotheses and argues that the manuscript is written in an agglutinative, phonetic-logographic system rooted in 13th-century Archaic Piedmontese (Gallo-Italic). Using evolutionary computing, n-gram statistical modeling, and context-free grammar validation, the BC framework achieves full lexical coverage on the validated corpus and demonstrates deterministic, repeatable mappings between Voynich glyphs, medieval vernacular morphology, and iconographic content. The decoded output consistently supports the interpretation of the manuscript as a monastic pharmaceutical and medical engineering manual (Regimen Sanitatis), rather than a cryptographic artifact. The article provides full methodological transparency, statistical validation metrics, botanical and pharmacological cross-verification, and open-source reproducibility via publicly available code and lexicons. This work establishes a falsifiable and production-ready linguistic system for Voynich studies and medieval manuscript analysis.