Ecological Sustainability in Metaverse: A Blockchain-Based Carbon Management and Regulatory Proposals for Policy Makers

The rapid evolution of the metaverse -a digital frontier characterized by the convergence of blockchain technology, artificial intelligence (AI) and extended reality (XR)- presents a profound normative dilemma regarding its ecological legitimacy. While virtualization offers significant opportunities to decouple economic growth from physical resource consumption, the intensive energy demands of decentralized infrastructures and high-bandwidth data processing pose systemic environmental risks. This study addresses the “accountability gap” inherent in decentralized ecosystems, where the fragmented identity of the polluter complicates the enforcement of the “polluter pays” principle and the state's constitutional obligation to protect the environment. To mitigate these challenges, this study proposes an original net emission balance model (E_{net}$) as a conceptual and regulatory tool to quantify the net climate impact of metaverse operations. The framework integrates blockchain-based “ green oracles ” and smart contracts to facilitate real-time, tamper-proof carbon tracking and automated offsetting. By synthesizing contemporary research and life cycle assessments (LCAs), this study evaluates the transition from energy-intensive proof-of-work (PoW) protocols to sustainable alternatives, such as proof-of-stake (PoS). Central to these policy solutions is the legal recognition of tokenized carbon credits as “digital assets” subject to property law, ensuring that environmental compliance is harmonized with digital tenure security. Furthermore, this study advocates for a shift toward “hard law” requirements through mandatory emission licensing, targeted fiscal instruments, such as deterrent taxes on energy-intensive PoW protocols and legally guaranteed cross-platform interoperability to prevent digital lock-in and regulatory arbitrage.