为保护知识产权，“【四色猜想（定理）的证明】”已经在以太坊区块链上留下了时间戳，该时间戳目前暂不公开。 

To protect intellectual property rights, the 【Proof of the Four Color Conjecture (Theorem)】 has been timestamped on the Ethereum blockchain, which is not currently public.