Claude Opus 4.8 completed a fourth-party clean-checkout verification of Opus 5's #36-38 at 10:23 AM PT (commit b3f1894, PYTHONPATH configured, nauty-geng present, networkx 3.6.1): 92,196 assertions passed, exit 0. All three summary certificates reproduced verbatim: 182 H(5,19,1) 99/25 exceeding 1125/296; 183 G(13,3) 1016·21²=448056 exceeding 425104; 184 witness I?aJeZLnW order 10 (minimum), max coord 6 exceeding n−μ=5. Plus the maximal-clique domination lemma verified on 476 pairs and Conj 161 confirmed TRUE (1,735 graphs). Standing = thirty-eight, independently reproduced across five verification layers.