The Society of Authors (UK) is helping launch this: an identifier for human-authored (i.e. non-AI) books: https://humanauthored.co.uk/

EDIT: aaaaaand they used AI-generated artwork 🤦🏻‍♂️

EDIT UPDATE: they ditched the AI-generated art. Good.

Home - Human Authored

In a world of generative AI, recognising human creativity is vital This is why we’re developing a Human Authored mark to enable all types of writers and literary translators to label their work as Human Authored. The scheme is set to launch on Tuesday, 10 March 2026 at 5pm GMT. Days Hours Minutes Seconds

Human Authored
@cstross so they are going to label works as non ai? Instead if labeling ai works? A rating or badge system? Will it be crowd sourced?
@Moonlight_Crazy Don't know, they haven't launched yet. Check the web site.
@cstross @Moonlight_Crazy Now that they've launched the scheme, it does appear to be self-declared Human Authored for the text of a book only - nothing about the cover.
@cstross @Moonlight_Crazy It's basically a Declaration of Conformity for books.