Some users have been asking me questions about what happened with the pool and KGW exploit. They were confused that the two were somehow connected and I thought I would clear it up.

Pool Exploit

The pool exploit was due to a miss-configuration of the stratum mining software that allowed miners to submit lower than normal difficulty shares. These shares were technically worthless and should have been invalid, but the software couldn't tell. If you're pool is still affected by this, here is how to fix it.  

Use the branch "Feature(MultiAlgo)" from this repo: https://github.com/Crypto-Expert/stratum-mining

After cloning that and checking out the correct branch, modify algo/coindefinition.py to use xcoin_hash.

Here's an example configuration for Darkcoin: http://paste.ubuntu.com/7116297/

KimotoGravityWell vs DarkGravityWave

We recently experienced a spike of difficulty from 300 to 10048 for one block. This was done by using a timewarp exploit on KimotoGravityWell where the user would submit an invalid timestamp on a block. To fix this issue without causing any unintended issues I implemented my own difficulty algorithm called DarkGravityWave, which uses 2 Exponential Moving Averages and 1 Simple Moving Average. These respond very quickly to shifts in the hashrate, but when invalid timestamps appear they can't impact the difficulty like we experienced before.

Is there a proper solution to get the wallet to sync past block 34139?

I started with no user data and a freshly compiled wallet from newest github revision, the nodes from 10-20 pages back and still no full sync. Tried without those nodes, again no user data, and same issue.

Any help?

23:08:26

getinfo


23:08:26

{
"version" : 90000,
"protocolversion" : 70002,
"walletversion" : 60000,
"balance" : lolthastmylilsecret,
"blocks" : 35920,
"timeoffset" : 0,
"connections" : 31,
"proxy" : "",
"difficulty" : 217.37163291,
"testnet" : false,
"keypoololdest" : 1393894916,
"keypoolsize" : 101,
"paytxfee" : 0.00000000,
"mininput" : 0.00001000,
"unlocked_until" : 0,
"errors" : ""
}

UPDATE I've had a few requests from folks in Europe, it seems most European countries would add $10 to the shipping, so shipping to the EU is available for a total of $33 (countries I've checked so far are the UK, Germany, and Belgium)

Canada only adds $5 to the shipping, so for Canadians it would be $28

This is something we have on our task list to add in the future.

So with all this talk about early adopters - how many DRK would you be happy to hold right now? Obviously we'd all like a million of them but realistically given the risk-reward how many do you think is sufficient? Im mining and considering buying some more to bump me up to 1-2k.

The ONLY thing about DRK that prevents much higher prices is due to what you just said.

Current coin supply is less than 4 million DRK. 2% of 84 million is...
1.6 million, so in the first week probably 80% of the DRK was mined
No premine, but certainly a small number of people have this 80%

I have no problems with people that were smart enough and lucky enough to have mined the first 80%. Just dont keep promoting it as no-premine. It is technically true, but from a practical standpoint misleading and is an attack vector for credible complaints.

So a small number of people now have $2 million USD worth of DRK and they continue to cash out. Based on total volumes traded, there is still a long ways to go before even $1 million of that is sold.

James

See my sig ^^.
Indeed im about to switch completely from solo to pooled mining if my success rate stays so low solomining. Later this week i add a bit hahsrate, not sure f still mining solo till then.

LOL @ "old guy"  

Welcome onboard. What kind of hashpower do you have, I am guessing very high for you to be able to solo mine. As the difficulty has now been settling above 300, not sure if solo mining is the way to go. You could setup a p2pool though (very easy!) or use one of the existing ones for a flavor similar to solo mine.

+ 1

The only problem with DarkCoin is that it is getting lost here in this sea of shit/scam/clone coins. It is a very hard mud to come out of, not to mention that early adopters of BTC do not entertain the thought of a #2 and for obvious psychological reasons.

Also each altcoin thread has their own set of diehards, so the story of FUD and FUD defence is common for every alt I'd say don't worry about it too much.

I think short term, a one/two page DGW article/paper would be neat! Throw in chaeplin's pretty graphs and it would surely get a lot more recognition.

Yes, it's also sort of stupid to complain about having a somewhat larger supply up front - if you mine at the same rate the entire time, you will probably never reach critical trading mass in time for it to actually be useful. More important is how it was mined: Everyone who wanted to mine at launch could - anyone, not just devs and their friends.

It makes a big difference. Even with the rapid mining at the beginning (which I might add was planned and announced), the distribution of coins was fair.

Yeah, i should have been more clear, need a 32-bit cpu miner to make use of a couple of old servers sitting idle.  Thanks for the info anyway

BTW, the DarkCoin clone, Hirocoin...... a lot of people over there are excited by the fact that it uses X11, and its low power usage.

Clearly a big selling point over here also, but they seem to be doing a good job at marketing the X11.  I see X11 written around the place a lot more than here.  Just a thought ... As it seems that X11 is getting a decent amount of attention now.

That sounds good... How many more betas do you think? Is there anything we (I mean everyone else, you are the busy one!) can do to help out in the meantime?

P2Pool must become bigger.

Centralized systems are always a risk !

Get a look at http://darkcoin.mine.nu

24/7 Miners should really consider P2Pool and mine on the closer node to them.

They can add several backup nodes and wherever they mine on the P2Pool Network they will keep on earning the same DRK amount.

I don't think that bitcoin will ever implement anything stealth.  It will have to be a 3rd party processing or else a parallel wallet system.  They don't want to mess with their multi billion dollar economy plus with all the bad press from illegal activities, they don't want to invite more criticism.  So I don't really know who/what is developing stealth addresses for bitcoin, but Zerocoin ended up having to do it as a separate coin instead of what they wanted to do because the developers of bitcoin said they didn't want to participate with their project.

How are you building the daemon for 32 bit?