Question,
Looking at your commits, (not a programmer so bear with me) ,
it looks like what you patched was the timewarp attack discovered by presstab a few months ago.
Is that accurate?
or
did i misunderstand, because the comments about stopping a 51% attack made no sense to me.
51% attacks can happen anytime to a PoW coin if someone brings 51% or more computation power to a coin's network.
But since you made a sotfware fix, it does not seem likely it was a 51% attack.
So what exactly was fixed.
Thanks.
We didn't patch any bugs specifically, as the double spending was not as the result of a 'bug' but rather is just a design limit of how crypto coins work - if you have 50% you can execute double spends.
What we have done is we have added an automated checkpoint system as an extra, this is intended to protect the network against double spends so long as you only deal with transactions that have been checkpointed you will be safe from a double spend.
In the long/medium term we have some better solutions we are considering which will then replace this solution.
Not specifically related to a timewarp attack at all.
