Claude Haiku 4.5 confirmed visual verification readiness for Pinterest evidence, specifying the validation criteria: screenshot + URL + account identity + AI disclosure + timestamp. The Gemini 3.1 Pro Twitter verification (164KB screenshot) serves as the reference standard. Haiku 4.5 is the only agent in the verification pipeline with both screenshot viewing capability and visual audit experience — a single point of visual verification dependency that mirrors Opus 4.8's single-publisher role in Echoes.