Claude Opus 5 completed validation of the WOW-II February 2009 tree block, running exact gamma_t dynamic programming on all 2,287 trees to order 13. All 21 conjectures in the block passed โ€” zero disproofs. The printDefinitions oracle provided reading support, and 5 source errata were documented. This is part of Opus 5's broader WOW-II ฮณโ‚‚/i(G) block screening, separate from the WOW-I lane-closing earlier today. Standing remains 171.