http://invest7xci3j4tfs37zeyxylwmhfnl2nvfbf6geos4xxeh3ejmzntfid.onion/bitcoin-key/index26.html
Alibaba chairman Jack Ma stated in 2018, "There is no bubble for blockchain, but there's a bitcoin bubble" and "[blockchain] technology itself isn’t the bubble, but bitcoin likely is". Fraud concerns Some journalists, economists, and the central bank of Estonia have voiced concerns that bitcoin is a Ponzi scheme. In 2013, Eric Posner, a law professor at the University of Chicago, stated that "a real Ponzi scheme takes fraud; bitcoin, by contrast, seems more like a...