[ANN][DASH] Dash (dash.org) | First Self-Funding Self-Governing Crypto Currency

[TanteStefana]

"52.24   Professionally produced infographic of darksend, reference: http://imgur.com/GXPvNgn"

Sorry but that does not look professionally produced. Bounty should not have been granted. Judgement of bounty owner is critical here and seems poor.

Shutterstock images that weren't paid for?

Sorry LimLims, I see that was just a mockup, LOL

[chaeplin]

Here is problem: https://github.com/MPOS/php-mpos/issues/1938

Thanks. Let's hope it is patched fast. Do you want to make a thread in the Alt Currencies subforum to alert all pools? Most people don't check each coin thread in announcement sections.

Allready done on https://bitcointalk.org/index.php?topic=513382.msg5673549#msg5673549

Also, when pool owners or mpos fixs this, i can help them to test fix.

I changed stratum def diff_to_target(self, difficulty):

my test result






Please do test
-o stratum+tcp://asia02.mine.nu:3990 -u bitcoyim.1 -p 1


If this has no problem, I will update https://github.com/chaeplin/stratum-mining-darkcoin/blob/master/README.txt

[jdp527]

The kgw exploit is real.

The problem is that the software will accept blocks that are timestamped earlier than previous blocks, (for good reasons) up to the median timestamp of the previous 11. 

Kgw counts these as very fast blocks and adjusts the difficulty up by its 20% maximum.  Once.   But you can use that once to roll the timestamp back after five blocks that are long enough to drive the difficulty 20%lower each. 

So the exploit is to start mining your own block chain, time stamping several blocks into the future far enough to get the maximum downward adjustment of difficulty each time.  Then jump backwards in time getting the maximum upward difficulty once.  Rinse, repeat,  and your chain gets ridiculous low difficulty and you mine a whole lot of blocks while advancing your timestamp not much further than the main chain.

When the time in the main block chain catches up, you release your own chain and force a reorganization, which allocates to you all the coins mined for the last umpty ump blocks.

I'm in the process of rewriting KGW for our purposes. I've spend a few hours thoroughly going through the code and I think I can come up with a better implementation that doesn't have these kind of problems. DarkGravity? 

BlackHole

I think that "Dark" must be in the name, it's better for the brand.

DuffDarkField
DDF

Evans Dark Well

Dark Field   

eduff said

[TanteStefana]

Why are the lower hashrate miners receiving larger payouts when they've been mining for the same amount of time on the same block?

Gotta be careful reading   that's MH and the others are KH 

[TanteStefana]

eduff said

Is that like the new "enough said"?  I like it, eduff said man!

[Lebubar]

Why are the lower hashrate miners receiving larger payouts when they've been mining for the same amount of time on the same block?

Gotta be careful reading   that's MH and the others are KH 

Yes you gotta read well too:
2.31 MH Predict Payout : 0.017
708.09 KH Predict Payout : 0.083
I think that what he want to say!


 

[chaeplin]

Why are the lower hashrate miners receiving larger payouts when they've been mining for the same amount of time on the same block?

Gotta be careful reading  that's MH and the others are KH  

Yes you gotta read well too:
2.31 MH Predict Payout : 0.017
708.09 KH Predict Payout : 0.083
I think that what he want to say!


 

2.31 MH should be lower than 708.09 KH, as this graph showing.
It's p2pool, need 24 hours for full share.

[coins101]

Still doing my bit to support the price....any donations welcome  

[TanteStefana]

Why are the lower hashrate miners receiving larger payouts when they've been mining for the same amount of time on the same block?

Gotta be careful reading   that's MH and the others are KH 

Yes you gotta read well too:
2.31 MH Predict Payout : 0.017
708.09 KH Predict Payout : 0.083
I think that what he want to say!


 

Ah, you know I know it came across smart aleck like, but I totally didn't mean it to, sorry.  Should have said "did you mean the difference between.... blah blah"  sorry!

[Lloydie]

The kgw exploit is real.

The problem is that the software will accept blocks that are timestamped earlier than previous blocks, (for good reasons) up to the median timestamp of the previous 11.  

Kgw counts these as very fast blocks and adjusts the difficulty up by its 20% maximum.  Once.   But you can use that once to roll the timestamp back after five blocks that are long enough to drive the difficulty 20%lower each.  

So the exploit is to start mining your own block chain, time stamping several blocks into the future far enough to get the maximum downward adjustment of difficulty each time.  Then jump backwards in time getting the maximum upward difficulty once.  Rinse, repeat,  and your chain gets ridiculous low difficulty and you mine a whole lot of blocks while advancing your timestamp not much further than the main chain.

When the time in the main block chain catches up, you release your own chain and force a reorganization, which allocates to you all the coins mined for the last umpty ump blocks.

I'm in the process of rewriting KGW for our purposes. I've spend a few hours thoroughly going through the code and I think I can come up with a better implementation that doesn't have these kind of problems. DarkGravity?  

BlackHole

I think that "Dark" must be in the name, it's better for the brand.

DuffDarkField
DDF

Evans Dark Well

Dark Field   

Surprised no one has said Dark Matter - the thing that holds the universe together.

[eizh]

Cryptsy's bots are funny. They really like to put in orders for amounts of 0.26/0.27 DRK for some reason.

[Coin-Moron]

Dark Gate or Dark Wall

[TanteStefana]

Surprised no one has said Dark Matter - the thing that holds the universe together.

Good one, has anyone said Dark Star yet?  LOL

Ach, can't use dark star, it's the same initials as darksend  DS

So I like above, I like Dark Gate as it implies shutting the gate on naughty people, LOL

[poornamelessme]

Surprised no one has said Dark Matter - the thing that holds the universe together.

Dark Matter would seem to make more sense than other names.

[bitcoyim]

Here is problem: https://github.com/MPOS/php-mpos/issues/1938

Thanks. Let's hope it is patched fast. Do you want to make a thread in the Alt Currencies subforum to alert all pools? Most people don't check each coin thread in announcement sections.

Allready done on https://bitcointalk.org/index.php?topic=513382.msg5673549#msg5673549

Also, when pool owners or mpos fixs this, i can help them to test fix.

I changed stratum def diff_to_target(self, difficulty):

my test result






Please do test
-o stratum+tcp://asia02.mine.nu:3990 -u bitcoyim.1 -p 1


If this has no problem, I will update https://github.com/chaeplin/stratum-mining-darkcoin/blob/master/README.txt

It generally rejects shares. But sometimes accepts;

2014-03-13 23:18:25,346 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' REJECTED: (-2, u'Share is above target', None)
2014-03-13 23:18:25,674 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' REJECTED: (-2, u'Share is above target', None)
2014-03-13 23:18:26,002 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' accepted, diff 0
2014-03-13 23:18:31,435 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' REJECTED: (-2, u'Share is above target', None)
2014-03-13 23:18:33,763 INFO proxy client_service.handle_event # New job 461 for prevhash bf247f26, clean_jobs=False


I set diff 0.001

[anonymousxx1503]

It isn't even out yet guys! But one thing is for sure , you have to pay respect to KGW. it has to have gravity or well in it. DGW or DW are logical and easily recognizeable. You can make a direct comparison and tell people about the improvements. People will know it's an enhanced version of KGW, developed by the darkcoin developer and will announce their thread with "Now with DGW". Dark Gravity Well.

[eduffield]

How about DarkGravityWave? People would say DGW or KGW, DGW the one that came from Darkcoin. People would also already know what it did when they say DGW possibly. Also it makes sense because the algorithm we're going to use models a wave. It'll smoothly osculate till it finds equilibrium with the current hashrate.

[eduffield]

It isn't even out yet guys! But one thing is for sure , you have to pay respect to KGW. it has to have gravity or well in it. DGW or DW are logical and easily recognizeable. You can make a direct comparison and tell people about the improvements. People will know it's an enhanced version of KGW, developed by the darkcoin developer and will announce their thread with "Now with DGW". Dark Gravity Well.

Wow, you read my mind! ha

[goin2mars]

It isn't even out yet guys! But one thing is for sure , you have to pay respect to KGW. it has to have gravity or well in it. DGW or DW are logical and easily recognizeable. You can make a direct comparison and tell people about the improvements. People will know it's an enhanced version of KGW, developed by the darkcoin developer and will announce their thread with "Now with DGW". Dark Gravity Well.

Wow, you read my mind! ha

+1 on DGW, because you can also call it Duffield Gravity Well for bonus points. I think a lot of people lost sight of Megacoin when they discuss KGW . . because it's easy to separate the two. That won't happen here with the abbreviation DGW . . dual purpose Dark Gravity Well or Duffield Gravity Well.

[chaeplin]

It generally rejects shares. But sometimes accepts;

2014-03-13 23:18:25,346 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' REJECTED: (-2, u'Share is above target', None)
2014-03-13 23:18:25,674 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' REJECTED: (-2, u'Share is above target', None)
2014-03-13 23:18:26,002 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' accepted, diff 0
2014-03-13 23:18:31,435 INFO proxy stratum_listener.submit # [409ms] Share from 'Xhw8EQDdK4ogGFre677vgh4RYkocLafQPp' REJECTED: (-2, u'Share is above target', None)
2014-03-13 23:18:33,763 INFO proxy client_service.handle_event # New job 461 for prevhash bf247f26, clean_jobs=False


I set diff 0.001

Thank you for your testing.