Ethereum co-founder Vitalik Buterin has called for major social media platforms to be more transparent about their content algorithms, saying users deserve to know how posts are filtered and ranked.
His comments come as concerns grow over how large tech platforms control online conversations. He believes these steps can help protect free speech and rebuild trust in platforms like X.
In a recent tweet post, Ethereum Foundation AI lead Davide Crapis said that platforms claiming to support free speech should clearly explain how their algorithms work.
He argued that users deserve to know what these systems are designed to promote and that such settings should be easy to understand and adjustable.
Vitalik Buterin responded by pushing the idea much further. He suggested that every major algorithmic decision should be verified using zero-knowledge proofs. This would allow platforms to prove their systems are acting fairly without exposing private user data.
He also proposed recording content and engagement timestamps on-chain, making it impossible for platforms to quietly censor posts or manipulate timelines.
To improve accountability, Vitalik proposed that social media companies publish their full algorithm code after a delay of 1 to 2 years.
This approach, he said, would balance transparency with security, allowing the public to review how decisions were made while protecting platforms from immediate exploitation.
With platforms like X handling hundreds of millions of posts daily, Vitalik believes delayed transparency could help users and researchers better understand how content decisions were made over time.
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Vitalik also shared concerns about the direction of free speech on large social media platforms. Quoting Elon Musk’s vision of X as a global free speech space, he warned that turning platforms into tools for organized harassment could have serious consequences.
He said such behavior may lead to strong public backlash in the future and could end up harming the very idea of free speech itself.
Beyond algorithms, Vitalik also spoke about growing online hate, especially targeting Europe. He said some discussions have moved from fair criticism to extreme and hostile attacks that do not match his personal experience.
While he agreed Europe has real problems, he warned that exaggerated stories are being used to attack entire regions.
According to Vitalik, the broader crypto and blockchain community believes that transparency, clear rules, and verifiable systems are essential to rebuilding trust in online platforms and protecting open conversation.
