Algorithms decide what we see, but according to which rules? Vitalik Buterin, co-founder of Ethereum, directly challenges Elon Musk and denounces the opacity of X (ex-Twitter). In a context of mistrust towards centralized platforms, he proposes a radical alternative: auditing X’s algorithm thanks to blockchain and ZK-proofs. A strong stance that revives the debate on the governance of social networks in the Web3 era.