Ethereum co-founder Vitalik Buterin has registered a new Ethereum Name Service ($ENS) domain called 'dacc.eth' for 0.187 $ETH, approximately $500. This domain is linked to the concept of 'defensive accelerationism' (d/acc), which Buterin will discuss at an upcoming event. D/acc advocates for a cautious approach to AI and technological development, promoting human-AI collaboration and more decentralization. It contrasts with 'effective accelerationism' (e/acc), which supports unrestricted technological growth. Buterin's philosophy aims to balance technological progress with democratic values and avoid centralization.