Quote from: artiface on April 01, 2014, 01:26:44 AM

Quote from: stormia on April 01, 2014, 12:03:22 AM

This is a joke. Nice try to spread FUD about other coins, rat4, to try and promote your pure PoS blackcoin. How is it that Blackcoin prevents attack forks as a pure PoS coin, again?

You say "a sequential chain of PoW blocks can be mined in a flash."
Which is not true. Sure, you could mine all of the PoW blocks that occur sequentially, but there will be many, many more PoS blocks that interrupt those far and few apart PoW blocks. In a PoS/PoW hybrid there is no way to predict or control whether or not the next block will be PoS or PoW and therefore you cannot guarantee you will be in control of a long stream of blocks unless you have 51% of the PoW and PoS power.

Now, this brings up an issue with pure PoS coins such as your Blackcoin... That I have yet to be seen answered in any technical detail. How, when it is pure PoS and it IS known that every block in a row will be PoS, can you prevent an attack such as the one anonymousg64 brings up:

Quote from: Anonymousg64 on March 29, 2014, 07:09:12 AM

im still on the fence

can someone explain how this stops someone from generating lots of PoS blocks 20 days in the future from a bunch of TX's with small interval, whether through one or multiple wallets

Code:

ss << nStakeModifier;
ss << nTimeBlockFrom << nTxPrevOffset << txPrev.nTime << prevout.n << nTimeTx;
hashProofOfStake = Hash(ss.begin(), ss.end());
if(CBigNum(hashProofOfStake) > bnCoinDayWeight * bnTargetPerCoinDay)
return false;

im not well enough versed with the code to know what these variable names imply

Without PoW blocks to interrupt such an attack, how is it prevented?

This thread of yours is in really bad taste, rat4, you should find better ways of promoting your coin.

I await your reply, and your explanation as to how PoS coins are safe from a TX/coinage attack.

This was answered many times in the black coin thread and here you are asking it again.

https://bitcointalk.org/index.php?topic=469640.msg5971244#msg5971244

Oh look at YOUR REPLY
https://bitcointalk.org/index.php?topic=469640.msg5971375#msg5971375

Quote from: stormia on March 29, 2014, 07:06:23 PM

Thank you both, my fears have been quelled and I've learned some new stuff:)

So why are you here bringing it up again today in a new thread?

Because the answers that you speak of are just links to a comment from Sunny King, which actually only applies to PoS/PoW hybrids- as that is what he was working with. Am I mistaken? I still await a technical response that pertains to pure PoS specifically.

If i said said anything further about it on the blackcoin thread, I would have been ran out of there and labeled as a FUDer.

I will patiently await a technical response which pertains specifically to pure PoS and a technical response to my initial comment which also outlines why I think PoS/PoW hybrid systems are not vulnerable in the manner that rat4 proposes.