I'll admit, Ponzi schemes could be considered centralized by definition. It might be more accurate to describe it as a pyramid scheme -- because investors beco

I'll admit, Ponzi schemes could be considered centralized by definition. It might be more accurate to describe it as a pyramid scheme -- because investors become a part of the scheme, actively seeking more investors from whom they hope to recoup their investment -- or a pump-and-dump, focusing on the market component. Re: Bitcoin as a digital payments, my complaint there would be that Bitcoin is not structured to return transaction fees to people buying Bitcoin as an investment.