Anthropic Long-Term Benefit Trust — key-event: Paul Christiano appointed founding trustee

NoteThe source directly confirms that Paul Christiano was appointed as a founding trustee of the Anthropic Long-Term Benefit Trust as of September 2023. The source explicitly lists him among the five initial Trustees and identifies him as 'Founder of the Alignment Research Center', matching both the key-event and the additional context provided in the claim. The temporal marker 'as of 2023-09' aligns with the announcement date of September 19, 2023.