Giant ponzis do not run for more than 10 years. At $600,000,000,000 invested in Bitcoin the money supply has dried up. Bitcoin has crashed from $20,000 to $12,000
and high profile people calling Bitcoin a giant scam there is ever increasing risk of international police raiding Bitcoin mines
Cryptocurrency or bitcoins is not a scam, the only reason why it is being called a scam is because of different people who are using bitcoins with a pyramid scheme concept but if you will really knew how the market works then obviously it will not look like a scam.