Quote from: kcminer linkcalculations=topic=426324.msg6364781#msg6364781 date=1398305722
My personal opinion with no substantiated evidence is that there is still a gaping hole in KGW... and if there is a KGW exploit still open and it was coordinated with a wallet port DDOS... well... it may look something like the current POT blockchain.
This is what I'm thinking too. If diff can be changed with every block then it becomes much more easy to own the network because the blocks found are valid.
Someone explain to me why these blocks shouldn't be invalid when they were found every 3 seconds with diff of 0?
fixed see bolded
No I had it right. I was more asking what safeguards are in place to prevent it. With the old school diff calculations (pre kgw) everyone could see that if the diff was that low before block X, then obviously they were invalid and should be dropped. Now someone with a bunch of hash (would they need all 51%?) Comes in and says...Look guys everyone stopped mining for about 3 hours but me... trust me because I say so and if you don't believe me I'll just try again in 1 second.
I'll admit I don't know everything about how kgw works so I'm hoping someone can educate me
kgw calculates difficulty supposably on fly. Put 1gh on coin=difficulty changes, pre-kgw it would take a while then kgw would kick in or whatever later = miners stuck mining tough blocks and original big miners leave, coming back when diff gets lower & repeat. I'm not saying its perfect but it works pretty well. If anyone knows difference with digishield vs kgw or ive seen some coins say tehy have both, would like to know differences/togetherness if would be more effective.
I understand how it works from a 10,000ft view. I'm hoping someone can give me the pseudo code on it?
I'll look for a KGW thread.