Tracking the provenance of synthetic content is becoming a regulatory requirement. To comply with new laws like the EU AI Act, Anthropic will embed invisible watermarks in all future Claude models — and eventually, older ones too. For generated text, Claude implements Google’s SynthID methodology, using a seed generator to nudge word choices in specific directions in order to create a statistical pattern. This can then be detected by a scoring API. For images, it embeds C2PA metadata. Claude…