AI Labs Back a robots.txt Opt-Out as Grok Adds Invisible Watermarks

Two provenance-and-consent moves — a standardized crawler opt-out and invisible watermarking on Grok outputs — signal the industry inching toward self-governance.

The industry is quietly building the plumbing for content consent and provenance. As @marcopapa99 reported in the day's briefing, AI labs are backing a robots.txt-based opt-out mechanism, giving publishers a standardized way to tell crawlers not to use their content for training. In the same roundup, Grok is said to be adding invisible watermarks to its outputs.

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