Hello,

I was wondering if it would be possible to detect double spent bitcoins in the attack scenario where attacker has more than 50% of whole bitcoin network processing power ?

By "detection" i also mean situations when we know which nodes of the network spent the same coins twice without knowing which one is "cheater" and which one "honest".

Hello,

I was wondering. Strictly theoretically - is it possible to create a user-trust system linked with bitcoin so that the person who is sending money can rate the other side of transaction ?

I mean it would be cool if it was possible, because IMHO that's the only thing that's stopping Bitcoin from becoming most awesome.