Hashcoin whitepapers include some estimates of how many e-mails are sent daily to determine the delay needed. It is reasonable to assume that, in 2008, the tota

Hashcoin whitepapers include some estimates of how many e-mails are sent daily to determine the delay needed. It is reasonable to assume that, in 2008, the total cost of the Manhattan project inflation adjusted to 2008 dollars would be an estimate of the total number of coins that would need to be generated to rival the cost of a large government project to break encryption algorithms and monitor the net. A $1000 target per coin might have been a reasonable estimate in 2008.