How has altcoin technology changed over the years?
As a keen observer of the cryptocurrency market, I'm fascinated by the evolution of altcoin technology. Could you elaborate on how altcoins have transformed over the years? Have there been significant advancements in their underlying blockchain protocols? What about scalability, interoperability, and privacy enhancements? How have these improvements impacted the overall altcoin ecosystem and its competitiveness with Bitcoin? I'm particularly interested in understanding the role of altcoins in driving innovation and diversity in the crypto sphere.