There is no universal AI watermark
AI systems do not share one public watermark. Some products attach C2PA provenance, some embed provider-controlled signals such as SynthID, some leave ordinary metadata, and some add nothing durable.
This tool validates available C2PA records and reports editable metadata as hints. It does not infer an AI percentage from pixels or prose.
Watermarked can mean processed—not wholly generated
A signal may indicate that a provider generated, edited, translated, upscaled, or otherwise processed part of an asset. Provenance actions and digital source types provide the context needed to avoid overclaiming.
Primary sources and further reading
For technical and policy detail, consult the C2PA specification, Content Authenticity Initiative developer documentation, Anthropic transparency material, Google DeepMind’s SynthID overview, and the European Commission’s AI transparency guidance.