MAV-MCC / LHCb Request #91 — Public Pre-Result Deposit of the v0.2-R2 Antimatter Sealed-Holdout Freeze

Public pre-result deposit of the MAV-MCC / LHCb Request #91 antimatter analysis freeze v0.2-R2. The scientific protocol was originally frozen on 2026-08-11, before opening the antimatter-specific distributions governed by this programme. The parent Request #91 corpus had already been used for earlier observables; therefore this analysis is explicitly classified as a prospectively sealed new-observable holdout within a previously analysed parent corpus, not as an unseen-parent-corpus blind test. The frozen analysis uses a deterministic event-level 10% EXPLORE / 20% VALIDATE / 70% JUDGE partition based on SHA-256 hashing of (runNumber,eventNumber). The primary H1 hypothesis, Conjugate-Contact Stochastic-Transience, is byte-locked and uses the LOW-only domains, frozen multiscale statistic, fixed random-number generator and predeclared decision rule: PASS iff T_CONTACT,JUDGE > P99_CONTACT,JUDGE. VALIDATE is explicitly NON-JUDGING and cannot authorize, veto, modify, rescue or replace the JUDGE result. At the time this public Zenodo record was prepared on 2026-09-07, the deterministic split, technical provenance checks and H1 execution lock had already been completed. VALIDATE had completed and was recorded only as a non-judging diagnostic. The locked pipeline had begun transition to the sealed JUDGE stage. No JUDGE verdict was known or included in this public deposit. This record therefore timestamps the frozen scientific definitions and execution provenance before disclosure of the primary JUDGE result. No subsequent diagnostic or analysis modification may retroactively alter the frozen H1 PASS/FAIL classification. This deposit does not claim direct observation of an antiuniverse, a hidden antimatter branch, extra dimensions, or a solution of the cosmological baryon-asymmetry problem. Any PASS establishes only the predeclared conjugate-contact signature within the selected LHCb observable space. A future independent NoBias / Minimum-Bias / Zero-Bias or otherwise least-selected sample remains the stronger confirmatory tier. Parent LHCb Request #91 result: DOI 10.5281/zenodo.21876716.