Railgun is a privacy protocol, which Buterin praised for guarding user privacy and excluding cyber criminals. It utilized zero-knowledge proofs to conduct confidential crypto transfers on the Ethereum chain, unlike Tornado Cash. According to Arkham Intelligence, Buterin's net worth stands at at least $552.86 million thanks to his large Ethereum holdings. However, that data was generated in January last year, and by the aforementioned purchase, Buterin proved that he is worth much more than half a billion dollars.