Could you please elaborate on what a KCC chain is? I've heard the term mentioned in relation to blockchain technology and cryptocurrency, but I'm not entirely familiar with its specifics. Could you provide a concise yet comprehensive explanation of what it stands for, how it functions, and perhaps some of its key features or applications in the cryptocurrency and finance world? Additionally, how does it differ from other blockchain networks or chains? I'm interested in understanding its role and significance in the broader context of digital assets and decentralized finance.