Which crypto went to zero?

Could you please clarify which particular cryptocurrency you're referring to when you ask, "Which crypto went to zero?"? The cryptocurrency market is vast and diverse, with hundreds of different coins and tokens in existence. Some of these may have experienced significant price drops, but few, if any, have actually reached a value of exactly zero. It's worth noting that the prices of cryptocurrencies are highly volatile and subject to market forces, so even if a particular coin's value has plummeted, it's unlikely to have hit absolute zero. However, there have been instances where certain cryptocurrencies have become virtually worthless due to factors such as lack of interest, hacking, or fraud. If you're specifically asking about a well-known or notable case where a cryptocurrency's value collapsed, it would be helpful if you could provide more context or specific details. That way, I can better answer your question and provide relevant information.