[Cryptography] Aggregate signatures

[James A. Donald]

>     Firstly - a million private keys  is a very large number - even in
>     todays internet day and age

How many bitcoin wallets are there?

Bitcoin transactions are currently "voted" legitimate by the majority of 
computing power.

This will likely have bad consequences when the majority of computing 
power is substantially different from the majority owners and users of 
bitcoins.

It would be preferable to have bitcoin like currency in which currency 
transactions are voted legitimate by the majority of existing owners of 
the currency.