Vitalik Buterin, the creator of Ethereum, has expressed concerns about Worldcoin, a new cryptocurrency project launched by OpenAI. Worldcoin aims to use a hardware device called the "Orb" to scan users' irises and create a decentralized database of identities. However, Buterin has highlighted four major risks to the project, including potential privacy breaches and security vulnerabilities. Despite these concerns, the WLD token has already achieved a fully diluted valuation of $22.5 billion and risen by 33% since launch.