Proof of humanity is signals in content, first-hand stories, specific detail, and voice, that show a real person, not a generic AI, produced it.
A voice imprint is a documented profile of a founder's tone, beliefs, and phrasing used to keep ghostwritten content sounding like them.
Answer engine optimization is optimizing content so AI answer engines like ChatGPT, Claude, and Perplexity cite it as the source in their answers.