[NSFW] Official Sexcoin Thread - New MANDATORY upgrade: KGW Timewarp attack FIX

[LittleDigger]

I noticed the network settled down to a nice hashrate for our smaller miners, but I suspect that the huge surge in hashrate we've experienced was caused by big miners grabbing some SXC to stash away, and it left the network lagging a little..

We decided to point some extra hashpower at the pool so the small miners aren't left slogging through "hard" blocks and get a cut of every block. The difficulty should change at block 83040, and we'll start pulling hashpower off the pool as difficulty decreases so smaller miners make more..

There will be random "Testing Bonuses" to miners on the pool of 69 SXC. To qualify a miner simply has to have a hashrate on the pool at the time of the bonus.

[Sexcoin69]

 

Time for another..

Random P2pool Testing Bonus !

S1uU2rk8sXeUSBfEQ983vcJYmVKHhkeJn9 69 SXC
SADmoKNyo7GzCieymnu22d9PFp2CU22tKG 69 SXC
SGmCXnXwZVoWPwagyLceUz5XBobe1R3bEb 69 SXC
SKUfzAhJwwMiZQeR5mcb3H3CCrSsR9ZarL 69 SXC (Kelsey)

[Sexcoin69]

Lets Bump the thread with another

Random Pool Testing Bonus

SKUfzAhJwwMiZQeR5mcb3H3CCrSsR9ZarL 69 SXC (Kesley)
SGmCXnXwZVoWPwagyLceUz5XBobe1R3bEb 69 SXC
SA6tXuqqirJQuuQYdKSCxHPrzXvzzY8fxm 69 SXC (Loucy)
S1uU2rk8sXeUSBfEQ983vcJYmVKHhkeJn9 69 SXC
SADmoKNyo7GzCieymnu22d9PFp2CU22tKG 69 SXC

[LittleDigger]

Just had the difficulty drop.. hashrate has dropped to normal 

[JohnDorien]

Does anybody buy SXC?

If so, pm me your offer per 1k

[hotcoldcoin]

Has anyone made a list of all the past and future reward blocks of Sexcoin?  

This seems like an easy list to make, because the Mersenne Twister is seeded with the block height.  Thus we know the seed for every block, past and future.

main.cpp

Code:

		//superblock random reward
		int rand = generateMTRandom(nHeight, 100000);

[lavajumper]

Doesn't the Mersenne Twister function use some randomizer besides the seed? Maybe a time component? Otherwise it would just be a function. Or did I miss something big?

[joewinkler]

http://en.wikipedia.org/wiki/Mersenne_twister#Disadvantages
The algorithm in its native form is not suitable for cryptography (unlike Blum Blum Shub). Observing a sufficient number of iterations (624 in the case of MT19937, since this is the size of the state vector from which future iterations are produced) allows one to predict all future iterations.

Do you need 100000 blocks or do you need 624 iterations to predict all future iterations?

80000 blocks are generated, but I don't know how to predict, and I don't know whether it matters, when the next big reward is.

[Sexcoin69]

What is this picture?
Is it from a game?

Our Headquarters  have no good security ... I think we have a spy among us ... pictures are now in public  

[Sexcoin69]

Does anybody buy SXC?

If so, pm me your offer per 1k

http://www.altcointalk.co.uk/index.php/topic,148.msg911.html#msg911

[Sexcoin69]

Random Pool Testing Bonus

S1uU2rk8sXeUSBfEQ983vcJYmVKHhkeJn9
SKUfzAhJwwMiZQeR5mcb3H3CCrSsR9ZarL   
SGmCXnXwZVoWPwagyLceUz5XBobe1R3bEb   
SHUqPoH1TjbQLeT5Ka3rTURYRXidug4bcG

69 SXC for all 

[hotcoldcoin]

Doesn't the Mersenne Twister function use some randomizer besides the seed? Maybe a time component? Otherwise it would just be a function. Or did I miss something big?

I vaguely recall hearing something about better seeding in MT.  But in this case, I think it's just using the seed given.  Since all nodes have to get the same rand from the same seed.

main.cpp

Code:

int static generateMTRandom(int s, int range)
{
random::mt19937 gen(s);
    random::uniform_int_distribution<> dist(1, range);
    return dist(gen);
}

...

int64 static GetBlockValue(int nHeight, int64 nFees)
{
...
//superblock random reward
int rand = generateMTRandom(nHeight, 100000);
...

I did a quicky script to check what block heights are superblocks.  My script might be bogus, I dunno.  I can't load the block explorer to check.

Was block #45 the first *5 superblock, and block #2043 the first *50 superblock?

Here's the list up to block #100000 : http://pastebin.com/0qZnUCKC

[joewinkler]

@LittleDigger&lyno,
is it possible to integrate this great pic into the official website?

[lavajumper]

I did a quicky script to check what block heights are superblocks.  My script might be bogus, I dunno.  I can't load the block explorer to check.

Was block #45 the first *5 superblock, and block #2043 the first *50 superblock?

Here's the list up to block #100000 : http://pastebin.com/0qZnUCKC

Block 9,48, and 215 were the first 3 5x blocks...first block is block 0.

I am curious. Are you getting the exact same numbers when you run the script twice? across reboots? on different computers? a debug compile vs a release compile?

[hotcoldcoin]

I did a quicky script to check what block heights are superblocks.  My script might be bogus, I dunno.  I can't load the block explorer to check.

Was block #45 the first *5 superblock, and block #2043 the first *50 superblock?

Here's the list up to block #100000 : http://pastebin.com/0qZnUCKC

Block 9,48, and 215 were the first 3 5x blocks...first block is block 0.

I am curious. Are you getting the exact same numbers when you run the script twice? across reboots? on different computers? a debug compile vs a release compile?

I did run multiple times to make sure it spit out the same results, but no reboots or different computers , etc      But looks like the results are bogus.   So back to the drawing board.   Is there a list of all the sexcoin superblocks found so far?

[lavajumper]

Is there a list of all the sexcoin superblocks found so far?

You can manually verify here:

http://sexcoin.lavajumper.com:9950

Fair warning: it gets a little flaky sometimes, but its accurate.

I'll look at the database and see if I can pull that data directly.

[Sexcoin69]

Random Pool Testing Bonus

S1uU2rk8sXeUSBfEQ983vcJYmVKHhkeJn9
SA6tXuqqirJQuuQYdKSCxHPrzXvzzY8fxm
SCEtQkLnaHrFSesorJqxdaWUrj8tF9rzqS
SGmCXnXwZVoWPwagyLceUz5XBobe1R3bEb
SKUfzAhJwwMiZQeR5mcb3H3CCrSsR9ZarL

69 SXC for all 

[Sexcoin69]

@joewinkler

Are you still trying to compile on Fedora? Any feedback on it?
TIA

[LittleDigger]

@LittleDigger&lyno,
is it possible to integrate this great pic into the official website?

No.. It is possible to ask lynos if he can make some custom graphics for the site, and we have.

And I hate to say it, but with all the messing around with p2pools the website is behind schedule. I'm feeling frazzled and am going to get some downtime..

But if it means lyno's work is featured on the site, thats not a bad thing.. I definately think it would give it some "wow" factor..

[LittleDigger]

Future Sexcoin Headquarters  


A guy can dream can't he?  

shameless repost so I can see this again.  And ppl wonder why we keep supporting sexcoin!
Its excellent lyno! ( My wife is wondering why no guys butts ? )

You can see all sorts of butts.. You just need to get some SXC and visit his website...