ΔΓΩ-ΔΛ-ΨΔ-ΩΨ-ΓΔ It was a sequence of Greek letters—an ancient cipher used by The Architects. Mira recognized it as a variant, where each pair of letters mapped to a decimal number. Decoding it, she obtained the phrase: “THE GATE OF COGNITION.” She realized the “gate” was not a physical door but a software module deep within the city’s central asset registry. Accessing that module required a second key—an authentication token that only the old EAM master server still stored. Chapter 3: The Ghost Server The master server, known colloquially as “The Ghost,” sat in a climate‑controlled vault beneath the municipal archives. It was protected by layers of quantum encryption, each layer requiring a different form of proof: biometric, linguistic, and, most puzzling of all, musical .