Elon Musk says he's not "for or against" decentralised platform Ethereum, following rumours of using it for a project.

Musk was responding to a tweet from cryptocurrency proponent William Shatner, of Captain James T. Kirk fame from Star Trek. The tweet from Shatner was originally posted back in May, but Musk took time off from launching shuttles to respond this week:

Unlike Bitcoin, Ethereum is designed to be...