This research note highlights the existence of two mathematical integrity control codes (checksums) and a chronological key intrinsic to the structure of the standardized 604-page Quranic codex. By combining the topographical analysis of the medium, the microstructure of a specific textual directive (Surah 15, verse 87), and the geometric median associated with the element Iron (Surah 57), this study demonstrates the existence of an inviolable mathematical matrix. This dual system locks both the historical temporal origin of the text (the year 610) and its internal architecture (the 114 surahs). These recurring arithmetic symmetries challenge probabilistic models of a late or fragmented assembly of the text. To ensure the reproducibility and transparency of these results, the study integrates an open algorithmic validation. A script written in the Python language is provided in the appendix, allowing the scientific community to independently and instantly verify the robustness of the integrity equations and the closure of the matrix loop on the codex text.