★★DigiByte|极特币★★[DGB]✔ Core v6.16.5.1 - DigiShield, DigiSpeed, Segwit

[24hralttrade]

You guys are tech maniacs in my eyes, allot of information coming in and i can´t keep up!

Lovin it!
http://www.youtube.com/watch?v=I6zA6g4MAcE

[halinyo]

Hello Jared and community,

I hope this attack will never take place... as long as hash rate is high, the probability is quite low... but still possible...
Imagine if it was combined with %51 attack, then he can quickly mine at a very low difficulty to gather a lot of coins in a short while.

I think this fix should be the priority.  And this is not only for DGB, every coin using 1 block retargeting should consider this, especially those who are still on KGW.

Ref 1. https://litecoin.info/Time_warp_attack (Also check the second REF for eliminating the attack on litecoin )
Ref 2. https://bitcointalk.org/index.php?topic=552895.msg6016831#msg6016831
Ref 3. https://bitcointalk.org/index.php?topic=608893.msg6746665#msg6746665 (Also skim the whole page)

And finally Myriad made their fixes. Should talk to them and get this done ASAP.
Ref 4. http://www.cryptoarticles.com/crypto-news/mandatory-myriadcoin-upgrade-includes-stealth-addresses-new-weighting-algo-more

I know in bitcoin, it is impossible to take advantage of this crack since there is always created blocks in a quite fast manner.
However, those coins who have this problem in common are using the same bitcoin source.

Cheers.

[HR]

Can anyone confirm that Digihash is hosted in New Jersey? I thought it was going to be in Texas or something originally but since my ping time is a lot lower than when it first went live I am going to switch over.  Plus, supporting the devs =).  

Also a thumbs up for http://birdspool.no-ip.org:5021/static/stats/ that p2pool has been rock solid and birds a cool guy that I've gotten a chance to talk to a few times.  If you are really concerned about your fees, I believe birdspool is only .5% if im not mistaken.


Its my opinion we really should be spreading the hash around by supporting the Devs pool or boosting the P2pool pools.

The IP for DigiHash is 66.228.56.115 and that points to Atlanta, Georgia, but the router at linode.com looks like it can re-route on demand to Absecon, New Jersey (both East Coast locations and ideal for anyone on that side of the U.S., and even for folks on the West Coast it's still one of the best bets). Bird's P2Pool is located in Massachusetts, CryptoMiningPool is now located in England, The Blocks Factory and Miners Pool EU are both French based, and that's the rundown for the Groestl pools' server locations.

For the rest of the pools that don't also offer Groestl mining, OmarG Pool's server is located in Niagara Falls, Ontario, Canada, ispace is located in New Jersery (in spite of its co.uk top level domain), CoinMine is in Phoenix, Arizona, DigiForce is located in Bayern, Germany, E-Pool is in Netherlands, and French P2P is also French as its name suggests.

Good coverage for North American and European miners, but with a noticeable gap in Asian coverage (not even Australia or New Zealand, surprisingly). I wonder about private pools in Asia . . . and attackers . . . the more transparency the better . . . all pools should be obligated to publish their name in the blockchain with each block found (and solo miners with an IP identification at least), and there should also be more security layers added with e-mail registration for each new wallet install, etc., but those are other issues that I've harped on before, and will leave for, other, future occasions.

[ycagel]

It may be wise to not send or receive any coins until the fix has been put in place.

YC

Hello Jared and community,

I hope this attack will never take place... as long as hash rate is high, the probability is quite low... but still possible...
Imagine if it was combined with %51 attack, then he can quickly mine at a very low difficulty to gather a lot of coins in a short while.

I think this fix should be the priority.  And this is not only for DGB, every coin using 1 block retargeting should consider this, especially those who are still on KGW.

Ref 1. https://litecoin.info/Time_warp_attack (Also check the second REF for eliminating the attack on litecoin )
Ref 2. https://bitcointalk.org/index.php?topic=552895.msg6016831#msg6016831
Ref 3. https://bitcointalk.org/index.php?topic=608893.msg6746665#msg6746665 (Also skim the whole page)

And finally Myriad made their fixes. Should talk to them and get this done ASAP.
Ref 4. http://www.cryptoarticles.com/crypto-news/mandatory-myriadcoin-upgrade-includes-stealth-addresses-new-weighting-algo-more

I know in bitcoin, it is impossible to take advantage of this crack since there is always created blocks in a quite fast manner.
However, those coins who have this problem in common are using the same bitcoin source.

Cheers.

[Kayahoga]

Algo Hashrate Equivalents

(With configurations tweaked so that a target temperature of 80º is respected and not repeatedly hit (where the cards settle into a 78º +-1º temp and work nicely with fan speeds that average 50% when using groestl, but run much hotter and faster, respectively, using the other algos).

SHA-256 = 1 GH/s  
Scrypt = 1 MH/s  
Groestl = 40 MH/s  
Skein = 120 MH/s  
Qubit = 5.65 MH/s  

Does anyone have differing stats?

@Arsenay, yesterday I pulled down 55,827 with only four 7950's - and I've averaged 57,953 over the last 4 days (with cool running, energy efficient, -k myriadcoin-groestl). 

HR, thanks for your analysis on the cards and server locations.  I need to get switched over.  I only brought in 70,000 with both my rigs yesterday which are a mix of 270x / 280x.  Either way, I am convinced that I could be bringing in more with the optimized groestl kernels.  From what I read I should be getting around 15 mh on my 280x's but I undervolt a ton so I probably wont be able to get that much. 

For the server locations I just did a nslookup on digihash.co so I must have been bumped to the NJ location.

Thanks again.
-Kayahoga

[HR]

Hello Jared and community,

I hope this attack will never take place... as long as hash rate is high, the probability is quite low... but still possible...
Imagine if it was combined with %51 attack, then he can quickly mine at a very low difficulty to gather a lot of coins in a short while.

I think this fix should be the priority.  And this is not only for DGB, every coin using 1 block retargeting should consider this, especially those who are still on KGW.

Ref 1. https://litecoin.info/Time_warp_attack (Also check the second REF for eliminating the attack on litecoin )
Ref 2. https://bitcointalk.org/index.php?topic=552895.msg6016831#msg6016831
Ref 3. https://bitcointalk.org/index.php?topic=608893.msg6746665#msg6746665 (Also skim the whole page)

And finally Myriad made their fixes. Should talk to them and get this done ASAP.
Ref 4. http://www.cryptoarticles.com/crypto-news/mandatory-myriadcoin-upgrade-includes-stealth-addresses-new-weighting-algo-more

I know in bitcoin, it is impossible to take advantage of this crack since there is always created blocks in a quite fast manner.
However, those coins who have this problem in common are using the same bitcoin source.

Cheers.

My reading of things is that the further away you get from the original specs and coding, the wider you're opening Pandora's Box. I found this thread to be very instructive: https://bitcointalk.org/index.php?topic=608893.0

Edit:

I like the idea of forced block discovery rotation between algos (so that no one algo can find multiple blocks in a row), but the idea that somehow the various difficulties did not already have a shared, combined weighting is not correct - they did, and as one algo's diff rose, so did the others in exact same proportions.

Keep It Simple Stupid: if it ain't broke, don't fix it, and only fix what absolutely needs to be fixed - otherwise we'll end up somewhere down the road with a collection of uncommented, undecipherable, ad hoc coding that nobody understands.

What I'm saying is BE CAREFUL, very careful, and especially so when collaborating with people who may or may not know what they're doing.

[halinyo]

Hello Jared and community,

I hope this attack will never take place... as long as hash rate is high, the probability is quite low... but still possible...
Imagine if it was combined with %51 attack, then he can quickly mine at a very low difficulty to gather a lot of coins in a short while.

I think this fix should be the priority.  And this is not only for DGB, every coin using 1 block retargeting should consider this, especially those who are still on KGW.

Ref 1. https://litecoin.info/Time_warp_attack (Also check the second REF for eliminating the attack on litecoin )
Ref 2. https://bitcointalk.org/index.php?topic=552895.msg6016831#msg6016831
Ref 3. https://bitcointalk.org/index.php?topic=608893.msg6746665#msg6746665 (Also skim the whole page)

And finally Myriad made their fixes. Should talk to them and get this done ASAP.
Ref 4. http://www.cryptoarticles.com/crypto-news/mandatory-myriadcoin-upgrade-includes-stealth-addresses-new-weighting-algo-more

I know in bitcoin, it is impossible to take advantage of this crack since there is always created blocks in a quite fast manner.
However, those coins who have this problem in common are using the same bitcoin source.

Cheers.

My reading of things is that the further away you get from the original specs and coding, the wider you're opening Pandora's Box. I found this thread to be very instructive: https://bitcointalk.org/index.php?topic=608893.0

Yep, that is the third REF in my post. That is quite helpful.

[Kayahoga]

HR, which driver are you using for your cards? I think my 280x might have to go back to 13.12 for the optimized kernel....from what im reading anyway.  From my understanding, Groestl favors more of the older generation of cards and the newer gen cards need some tweaking to compete.

[halinyo]

The sell pressure has just increased at 16 SAT. Time to buy more.

[Arsenay]

Algo Hashrate Equivalents

(With configurations tweaked so that a target temperature of 80º is respected and not repeatedly hit (where the cards settle into a 78º +-1º temp and work nicely with fan speeds that average 50% when using groestl, but run much hotter and faster, respectively, using the other algos).

SHA-256 = 1 GH/s  
Scrypt = 1 MH/s  
Groestl = 40 MH/s  
Skein = 120 MH/s  
Qubit = 5.65 MH/s  

Does anyone have differing stats?

@Arsenay, yesterday I pulled down 55,827 with only four 7950's - and I've averaged 57,953 over the last 4 days (with cool running, energy efficient, -k myriadcoin-groestl). 

I have not above 66 degrees
operating temperature of 7950 and 7970 in the case
and 60 degrees for 7790
and 7790 in general can work with a shutdown cooler
only by blowing casing.
once again:
I did not have the goal to create a heat gun of video cards
and endlessly tinkering with drivers
and squeeze out "water stones"

I engaged in the development of military equipment
and know the price of overheating and is familiar with the calculation of reliability
so ...))

[ycagel]

Where do you see that?

YC

The sell pressure has just increased at 16 SAT. Time to buy more.

[Kayahoga]

On Cryptsy  a few million DGB was sold at 16 sat within the past 2 hours or so.  Roughly .8 BTC worth if I had to guess

[HR]

HR, which driver are you using for your cards? I think my 280x might have to go back to 13.12 for the optimized kernel....from what im reading anyway.  From my understanding, Groestl favors more of the older generation of cards and the newer gen cards need some tweaking to compete.

Linux: Ubuntu 12.04 standard default drivers, NOT the beta, and no AMD proprietary either.

Windows: Windows 7 with 7900 Series 12.104.0.0

If it ain't broke, don't fix it, and I love what I'm getting out of this.

You know, I've heard it said that there are two types of computer users, those who love playing with the latest technology and beta software, and those who want the known stable. I'm of the second group: I have tasks to complete and I want to get the job done with a proven stable version.

[Meeren]

On Cryptsy  a few million DGB was sold at 16 sat within the past 2 hours or so.  Roughly .8 BTC worth if I had to guess

I think good news is on their way! (i think there was around 2 btc bought last 48 hours @ 16 sat on crypty)

Check these buy in orders on Cryptsy! Never saw a buy in of this amount for DGB!!!
0.09573684 BTC @ 0.00000016      
8.26685811 BTC @ 0.00000015   
1.03048360 BTC @ 0.00000014   

[Kayahoga]

HR, which driver are you using for your cards? I think my 280x might have to go back to 13.12 for the optimized kernel....from what im reading anyway.  From my understanding, Groestl favors more of the older generation of cards and the newer gen cards need some tweaking to compete.

Linux: Ubuntu 12.04 standard default drivers, NOT the beta, and no AMD proprietary either.

Windows: Windows 7 with 7900 Series 12.104.0.0

If it ain't broke, don't fix it, and I love what I'm getting out of this.

You know, I've heard it said that there are two types of computer users, those who love playing with the latest technology and beta software, and those who want the known stable. I'm of the second group: I have tasks to complete and I want to get the job done with a proven stable version.

I understand your point, once I got my qubit setup and working I haven't touched it since.  Switching over to groestl broke my 30 day uptime record =(.  I am currently running the 14.6 drivers since it had the boost to x11 which I was mining before the multi-algo switch.

[Kayahoga]

Just an FYI, I have one of my rigs pointed at qubit and one pointed at groestl ( using the aidbit miner ) .  Both have the same engine clock ( 1050 ) / mem clock ( 1500 ) and are undervolted the same amount.  I wont be able to read the kill - a - watt until I get home to check on the power draw.

The qubit rig is running at ~19 MH and the groestl rig is ~65 MH.    The groestl rig is running a bit warmer than the qubit one but that makes sense given the optimized miner.  Qubits miner is ...very inefficient. 

Ill leave this configuration a day or two for comparison.  Ive been mining and holding so I haven't been cashing out to pay for the electric bill so hopefully the power draw on groestl wont be significantly more than qubit...

Ill keep you posted.
-Kayahoga

[lionhead666]

Nice to see digihash.co online again

[24hralttrade]

On Cryptsy  a few million DGB was sold at 16 sat within the past 2 hours or so.  Roughly .8 BTC worth if I had to guess

I think good news is on their way! (i think there was around 2 btc bought last 48 hours @ 16 sat on crypty)

Check these buy in orders on Cryptsy! Never saw a buy in of this amount for DGB!!!
0.09573684 BTC @ 0.00000016      
8.26685811 BTC @ 0.00000015   
1.03048360 BTC @ 0.00000014   

Yes there is!
Need to buy more!

By the way, I’ve just passed the 12.5 million mark!
 

Great! Let´s shake hands in about 5 minutes.

[silvapaso85]

On Cryptsy  a few million DGB was sold at 16 sat within the past 2 hours or so.  Roughly .8 BTC worth if I had to guess

I think good news is on their way! (i think there was around 2 btc bought last 48 hours @ 16 sat on crypty)

Check these buy in orders on Cryptsy! Never saw a buy in of this amount for DGB!!!
0.09573684 BTC @ 0.00000016      
8.26685811 BTC @ 0.00000015   
1.03048360 BTC @ 0.00000014   

Maybe fake wall? Or maybe not...
In my opinion the price will increase so I bought some DGB

[24hralttrade]

On Cryptsy  a few million DGB was sold at 16 sat within the past 2 hours or so.  Roughly .8 BTC worth if I had to guess

I think good news is on their way! (i think there was around 2 btc bought last 48 hours @ 16 sat on crypty)

Check these buy in orders on Cryptsy! Never saw a buy in of this amount for DGB!!!
0.09573684 BTC @ 0.00000016      
8.26685811 BTC @ 0.00000015   
1.03048360 BTC @ 0.00000014   

Maybe fake wall? Or maybe not...
In my opinion the price will increase so I bought some DGB

No, the wall had a volume of 8 btc and 9 btc.
1 off them bought on nov.1
I think when they don´t have enough before friday they will buy with everything.