Unverified50% confidenceFactExact time
Anthropic、OpenAI、Google、Meta等主要AI厂商加入了内容来源与真实性联盟（C2PA），承诺为AI生成内容建立可追溯的标识体系
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/13/2026
First Seen
Valid until: 11/11/2026
Sources
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