Preregistered Retrospective WMAP Three-Year Particle-Horizon Posterior Analysis of the Earth-G Saturation Span

This public record freezes the complete pre-analysis protocol, technical methods, source custody, known-results disclosure, code, and reporting rules for a retrospective secondary-data analysis of official WMAP three-year flat-LCDM Markov chains. The fixed post-outcome Earth-saturation span is 94.30312401402658 Gly. Preliminary central-parameter calculations and all previously known Earth and Mercury results are explicitly disclosed; this record does not convert them into prospective predictions. The registered analysis will propagate the complete correlated WMAP3+ALL posterior to the present particle-horizon diameter, repeat the identical method on the WMAP-only chain, and perform an exposure-aware Mercury sensitivity analysis. No numerical WMAP chain row was opened, parsed, sampled, or summarized before publication of this record. A public OSF registration was attempted first, but persistent HTTP 403 failures at OSF's signed storage endpoint prevented readable public archiving. The official NASA chain archives are not redistributed here; their exact official URLs, filenames, byte sizes, versions, and SHA-256 hashes are recorded in the deposited source and technical-method files.