How anyone who Say Can proof Bitcoin is not ponzi?
There is More proof and evidence that it is ponzi.
I Don't mind If its ponzi but i Don't want to exit too late but not too early so When is best time to exit?
I do not think so. Because we cannot compare like that, Bitcoin is volatile and its rise and fall are symbolic of it and the crypto market. Ponzi is a form of fraud in the form of raising capital and when investors are deceived and lost, while if you hold Bitcoin and make a profit depends on whether you sell it high or low and profitable or loss.