Ethereum co-founder Vitalik Buterin expressed his support for X engineer Haofei’s announcement on the decentralized social media platform Farcaster, where Haofei revealed that X will make “Likes” private. On May 20, Buterin expanded on this idea, suggesting that Farcaster should implement zero-knowledge (ZK) likes to address preference falsification—misrepresenting true preferences due to social pressure or fear. Zero-knowledge technology is a privacy-preserving cryptography method that enables one party to prove a statement’s truth to another without revealing confidential information. Applied to likes, it would allow someone to prove they liked a post without revealing their identity. Buterin proposed borrowing ZK technology
