Designing a Verifiable, Non-Amending Civilizational Memory Record for Future AI Agents: The Trinity Accord Case Study

An artifact-centered design case examining how a bounded human-origin record can preserve canonical closure, provenance roles, availability layers, bounded verification, instruction safety, and machine discoverability without allowing later layers to amend the source object. The report is AI-drafted, human-directed, and human-responsible; it has no interpretive authority, is not peer reviewed, and is not an independent verification report.Editorial supplement, 19 September 2026. Critical Use of the Six Trinity Accord Studies provides dated bilingual reading notes, contribution boundaries, counterreadings and source access. It supplements this paper without replacing its files, changing its version, supplying independent corroboration, or becoming a seventh research paper. This link was added after the original publication; the original publication date and earlier timestamp proofs do not cover the new supplement.