Could you elaborate on the fundamental differences between cryptocurrencies and traditional stocks? I'm curious about how their underlying mechanisms, regulatory frameworks, risk profiles, and potential returns vary. In particular, I'd like to understand the distinctive characteristics of crypto assets, such as their decentralization, limited supply, and use of blockchain technology. Also, I'm interested in how investors approach these two asset classes differently, considering their volatility, liquidity, and accessibility. Could you provide a concise yet comprehensive overview of the key differences?