The contemporary city is rarely built on virgin ground; it is a stratigraphic manuscript written over centuries. Stratum Authoring refuses the fantasy of tabula rasa and instead treats every layer as editable deep-time text. Mapping, reading and selective updating occur without erasure. Past functions become infrastructural a priori; buildings are read as strata rather than obstacles. Demolition yields to proteolytic editing: amplify what matters, prune what calcifies, preserve legibility across epochs. The core function of 504 is palimpsestic sovereignty: the right to author the city as living document instead of overwriting it with the present tense. In heritage conservation this produces ten percent greater continuity of historical layers rendered operable rather than museified. Forensic architecture gains precision when stratigraphic reading reveals occluded causal chains. Urban regeneration projects avoid the violence of clearance by editing existing fabric with surgical care. The protocol scales across granularities—from single façades to metropolitan watersheds—always prioritising continuity over rupture. The practitioner becomes stratigraphic editor, ensuring that time remains legible without freezing it. This capacity for non-destructive rewriting is prerequisite for later metabolic and autophagic operations: one cannot prune intelligently without first authoring legible strata, nor lock a system whose history has been erased. 504 therefore supplies the temporal depth that allows the decalogue to claim genuine infrastructural persistence rather than ephemeral intervention.
510-systemic-lock https://doi.org/10.5281/zenodo.18682555 509-postdigital-taxidermy https://doi.org/10.5281/zenodo.18682480 508-topolexical-sovereignty https://doi.org/10.5281/zenodo.18682343 507-citational-commitment https://doi.org/10.5281/zenodo.18475136 506-recursive-autophagia https://doi.org/10.5281/zenodo.18681761 505-proteolytic-transmutation https://doi.org/10.5281/zenodo.18681278 504-stratum-authoring https://doi.org/10.5281/zenodo.18680935 503-semantic-hardening https://doi.org/10.5281/zenodo.18680418 502-cameltag https://doi.org/10.5281/zenodo.18680031 501-flow-channeling https://doi.org/10.5281/zenodo.18678959