[Vitalik: The Core Value of Ethereum is a 'Public Bulletin Board'] Vitalik Buterin recently published an article stating that the core use of Ethereum is not smart contracts or payments, but serving as a 'public bulletin board,' providing a publicly readable and writable data availability layer for cryptographic protocols such as voting, certificate revocation, and version control. He also mentioned that ETH can be used as an anti-Sybil payment tool, while smart contracts serve as a shared programming layer and deposit execution tool.