This record archives version 1.0 of a manuscript presenting a claimed proof of the Riemann Hypothesis via a width–2 functional-equation parity framework and cosine-carrier phase lift. The record is deposited for public timestamping, provenance, and expert mathematical evaluation. It includes the manuscript PDF, source TeX, a proof-spine summary, journal metadata, and a SHA-256 hash manifest. The author is an independent researcher. The mathematical ideas, claims, arguments, and final responsibility for the manuscript are the author's. OpenAI's ChatGPT was used as an assistive tool for drafting, editing, restructuring, and checking the clarity and consistency of notation and exposition. ChatGPT is not an author and is not a source of mathematical authority or external validation. This archive record does not constitute peer review, journal acceptance, or external certification of the claimed proof.