https://admeasurementweekly.com/posts/liveramp-openai-chatgpt-ads-conversions-api-measurement Ad Measurement Weekly en 2026-06-11T00:00:00.000Z LiveRamp Becomes First Independent Measurement Partner for ChatGPT Ads via Conversions API Hub OpenAI, ChatGPT, LiveRamp, Conversions API, Attribution, Walled Gardens