Energy Consumption and Environmental Concerns: Some blockchain networks, especially those using proof-of-work consensus mechanisms, require substantial computational resources and energy consumption, raising concerns about environmental sustainability.

Legal and Regulatory Uncertainty: The unclear and fragmented legal and regulatory environment surrounding blockchain and cryptocurrencies poses risks and uncertainties for businesses and individuals, limiting their investment and development in the space. 

😅  tao đánh giá cao sự tận tâm của mày! Darn!