Anthropic Long-Term Benefit Trust — key-event: Zachary Robinson appointed founding trustee

NoteThe source directly confirms that Zach Robinson was appointed as a founding trustee of the Anthropic Long-Term Benefit Trust as of September 2023. The source lists him among 'the initial Trustees' in the 'Meet the Initial Trustees' section. The claim's reference to him as 'CEO of Centre for Effective Altruism' in the additional context is slightly different from the source's description ('Interim CEO of Effective Ventures US'), but this is a minor discrepancy in job title/organization name rather than a contradiction of the core fact that he was appointed as a founding trustee in 2023-09. The key event (appointment as founding trustee in 2023-09) is confirmed.