okay! First we need to know what is PONZI SCHEME?
A Ponzi scheme or what they call “Red Flags” is an investment fraud that pays existing investors with funds collected from new investors. Ponzi scheme organizers often promise to invest your money and generate high returns with little or no risk. But in many Ponzi schemes, the fraudsters do not invest the money. Instead, they use it to pay those who invested earlier and may keep some for themselves.
With little or no legitimate earnings, Ponzi schemes require a constant flow of new money to survive. When it becomes hard to recruit new investors, or when large numbers of existing investors cash out, these schemes tend to collapse.
Ponzi schemes are named after Charles Ponzi, who duped investors in the 1920s with a postage stamp speculation scheme.
Source:
https://www.investor.gov/protect-your-investments/fraud/types-fraud/ponzi-scheme.
As per World Bank says, Bitcoin is not a Ponzi Scheme. They have completed a research on bitcoin. They concluded that bitcoin is not an Anti Bank.
It seems that bitcoin has a great help for them.
A far better question than “What is Bitcoin?,” that fewer common people have asked than should, is “What is The World Bank?” Bitcoin is a revolutionary digital protocol that supports an online currency of finite units whose value is based solely on market demand. This digital currency’s current market capitalization value is just over $5 Billion as of this writing. “The World Bank” is, according to Wikipedia, “A United Nations international financial institution that provides loans to developing nations for ‘capital programs.’ The World Bank’s official goal is the reduction of poverty.” Really? How’s that working out so far, after seventy years in business? .
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So no wonder nowadays, more and more people who are using and engaging in Bitcoin. Because they can earn more in bitcoin and they can make an easy work for their companies to be known.