The topic of this thread is the bond, not Bitdaytrade itself (which probably is also a scam, but not a ponzi). This 3% per week "bond" had all the hallmarks of a ponzi and the same predictable and predicted outcome as a ponzi.
It's nothing like a ponzi. The characteristic of a ponzi is that the underlying business is kept hidden and actually does not exist; in this case the business was specified and did exist (whatever problems it had). The other characteristic is that it is growing, in this case it was an issue for a set amount.
If you take for example
nrd525's ponzi indicators it passes about 2 out of 9.
I thought it strange that in the IPO, it claimed that Alberto had enough personal assets to cover repayment no matter what - and then he said he couldn't repay it at all.
My only knowledge of Alberto's assets is from his own words. His reported status doesn't seem very consistent so it's not clear if he can't pay, won't pay, or will pay (face value) given some time to liquidate assets.
I will not dignify MPOE-PR's comment with a response.