AI BriefingMS Paint and Photos Insert GUID-Based Invisible Watermarks into Locally Generated Images
Key point
Microsoft has confirmed a structure that forcibly inserts GUID watermarks via remote servers even when generating AI images locally.
Details
Microsoft's Paint and Photos apps use local AI models to generate images on Copilot+ PCs, but they have a structure that connects to remote servers for prompt censorship.
Research results show that the server returns a GUID along with the censored prompt, and this GUID is embedded as an invisible watermark into the locally generated image. This process is always performed regardless of the user's 'visible watermark' setting, and if watermark insertion fails, the image generation itself is treated as an error.
Additionally, these apps add C2PA metadata to AI-generated images, and the storage formats are limited to PNG, JPEG, GIF, and .paint, which maintain the C2PA standard. This suggests that centralized identification and tracking mechanisms are applied even in local inference environments.
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