ARCH v0.3 — Normative Architecture and Governance Specification for the Canal Transparency Protocol (PTC/CTP)

ARCH v0.3 defines the normative architecture and governance framework of the Canal Transparency Protocol (PTC/CTP). The specification establishes the relationship between the normative protocol and its software implementations. It defines the normative components of the corpus, their ownership boundaries, operating modes, input adapters, canonical artifacts, derived representations, distribution-package roles, validation states, compatibility rules and governance principles. ARCH v0.3 distinguishes the protocol itself from any particular implementation. Validator is the reference implementation, but conformance with the PTC/CTP is determined by the normative specifications rather than by a specific software product. This record publishes the official ARCH v0.3 specification in three languages: • Spanish (ES) • English (EN) • French (FR) Each language version is distributed through: • A PTC distribution package generated with Validator Portable v1.0. The package contains the preserved source, the canonical textual object, the canonical TXT artifact with its PTC declaration, the isolated PTC block, the manifest and the package documentation. • A separate DOCX representation intended for reading and consultation. The DOCX file is a derived, non-normative representation and does not contain an independent PTC declaration. Each PTC distribution package can be independently verified with the Validator reference implementation. Verification establishes documentary integrity, formal consistency of the declaration and technical conformance with the normative protocol. It does not certify the material truth, legal validity, scientific quality or ethical value of the document. ARCH v0.3 maintains exactly three normative SHA-256 hashes. It does not define a fourth normative hash for the complete ZIP distribution package. ARCH v0.3 forms part of the normative corpus of the Canal Transparency Protocol together with: • R-01 v1.1 — Canonical Text Specification. DOI: 10.5281/zenodo.21406620 • PTC-F v1.2 — Functional Specification. DOI: 10.5281/zenodo.21406680 The reference implementation is: • Validator Portable v1.0. DOI: 10.5281/zenodo.21251714 The specification was developed through documented human–AI co-creation involving GPT-5.6 Thinking by OpenAI and Claude by Anthropic, with final human review, decision-making and responsibility assumed by Manuel Barrera Anglada. Official website: https://validator.es Contact: contacto@validator.es Author ORCID: 0009-0000-8891-7021