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Author Topic: [CLOSED] BTC Guild - Pays TxFees+NMC, Stratum, VarDiff, Private Servers  (Read 828301 times)
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DPoS
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April 07, 2014, 03:06:43 AM
 #6621

I am also wondering if someone has positioned themselves to give them an advantage (however slight) in the nuts and bolts of pool mining

with HFT jockeys in the wild frontrunning stock trades in the milliseconds, is there anything similar that could be done to bolster oneself and/or hinder another pool?





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-ck
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April 07, 2014, 03:16:57 AM
 #6622

I wonder how much of this bad luck turn is due to external influences?

Somebody is DDOS eligius, and recently succeeded in a NMC payout hack against the pool. I also have noticed BTCGuild, Ghash and Blockchain showing the cloud flare error in the past few days.

A semi-well known fact about me:  my real life job includes DDoS mitigation at the ISP level for multiple ISPs.

This particular attack against Eligius has taken almost every form possible... UDP reflection attacks (DNS, NTP, SNMP, etc... 30+ gigabit at times), TCP SYN attacks (over 20 gigabit peaks), botnets directly flooding pool ports (multiple gigabit), botnets attempting application layer (stratum and HTTP) attacks (varies up to several gigabit and > 100k connections), HTTP request floods from botnets and other amplification (wordpress being one), hanging TCP connection attacks, various attack attempts against public facing bitcoinds, flood attacks against upstream routers, social engineering attempts (someone has contacted the abuse@ addresses for some nodes claiming Eligius is DoS attacking them, lol, presumably in an attempt to stir trouble with our hosts), and probably a ton of other things that are just automatically filtered/ignored.

https://bitcointalk.org/index.php?topic=441465.msg5986935#msg5986935

Luck for eligius and BTCGuild are both well under 100%
https://bitcointalk.org/index.php?topic=441465.msg6077549#msg6077549

Unknown pool is rapidly growing share, up to 33 34%
http://blockchain.info/pools?timespan=48hrs

And there maybe an unknown binary Merkle tree weakness being used (where the included transaction count are base 2). Now even if the weakness is theoretical, this is severely delaying confirmation times.

https://blockchain.info/blocks/80.241.217.46
http://www.reddit.com/r/Bitcoin/comments/22cohy/8024121746_mining_18_blocks_today_containing/
http://reddit.com/r/Bitcoin/comments/20y0nq/why_do_all_the_blocks_hashed_by_unknown_miners/

Would a faster-to-calculate power of 2 Merkle tree make a selfish attack slightly more effective ?


Luck has nothing to do with any of the above, it's just... luck.

The only thing that miners can do is a block withhold attack and without a PPS pay scheme the miners stand to lose if they do this, though with a large enough pool they may be willing to sacrifice some income leaving the other miners to subsidise their mining. Unlikely but not impossible. Theoretically pools may have implemented block withhold detection techniques but the pool ops would never reveal if they were not because that would then be opening themselves up to this attack. Attack is a very strong term though since there's so little to gain from doing this, it's not worth dwelling on it any more.

Merkle tree size choice has no effect on luck nor can it be used in any kind of attack. It's just a crappy optimisation for inefficient code.

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stevegee58
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April 07, 2014, 11:19:20 AM
 #6623

This happens every time a pool has a run of (statistically inevitable) "bad" luck.
Tin-foil-hatters start posting that it's because of hacking, network attacks, etc.
No one ever complains when a pool has a run of good luck.  Go figure.

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April 07, 2014, 11:41:17 AM
 #6624

This happens every time a pool has a run of (statistically inevitable) "bad" luck.
Tin-foil-hatters start posting that it's because of hacking, network attacks, etc.
No one ever complains when a pool has a run of good luck.  Go figure.

I appreciate that luck is random and over the long term it all evens out.  I do however wonder what is the point of the frequent, persistent DDOS attacks that mining pools are subjected to.  These attacks are presumably expensive and resource intensive, there has to be a way for attackers to profit from doing so.

I have been mining for 6 months and generally BTCGuild's 3-month luck has been 102% +/- 1.5% over this time frame

Over the past month luck has been terrible, enough to drive down 3-month luck to 95.878% and 6-month luck to 100.028%.
Both of these numbers are falling every day.  I wonder if Guiild's 3-month luck has ever been anywhere close to this low in the past 2 years.

Now maybe this is random chance, or <tin foil hat> maybe somebody is withholding blocks or faking proof of work, the bad luck coincided with a 4PH->6PH jump in the pool hashrate </tin foil hat>

From the posts by Con and Kano on this subject, I am glad to hear that pools are able to check for such attack vectors (even if it is a cat and mouse game)
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Think for yourself


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April 07, 2014, 11:48:40 AM
 #6625

This happens every time a pool has a run of (statistically inevitable) "bad" luck.
Tin-foil-hatters start posting that it's because of hacking, network attacks, etc.
No one ever complains when a pool has a run of good luck.  Go figure.

I appreciate that luck is random and over the long term it all evens out.  I do however wonder what is the point of the frequent, persistent DDOS attacks that mining pools are subjected to.  These attacks are presumably expensive and resource intensive, there has to be a way for attackers to profit from doing so.

That's the problem, DDoS attack's are CHEAP.  Botnets do this for fun.

And the Bitcoin network is the perfect laboratory for those who wish to research new ways of accomplishing these attacks, so that they have marketable product to go after big dogs for a fee with.

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April 07, 2014, 11:59:34 AM
 #6626


That's the problem, DDoS attack's are CHEAP.  Botnets do this for fun.

And the Bitcoin network is the perfect laboratory for those who wish to research new ways of accomplishing these attacks, so that they have marketable product to go after big dogs for a fee with.

I don't have any expertise on the subject.  A script-kiddie attack is cheap/free, but this sort of sophisticated 2-week long attack probably doesn't come cheap.

https://bitcointalk.org/index.php?topic=441465.msg6060325#msg6060325
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April 07, 2014, 04:58:33 PM
 #6627

4 blocks in a row!   Grin
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April 08, 2014, 12:44:40 AM
 #6628

Less we all forget, the network hash rate is ~ 43 ph/s and BTC Guild is only ~ 7 ph/s and Gash.io  at 11 ph/s that means there is a whole lot more pools out there now taking your slice of the pie, sorry kids you're going to have to share them btc's

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April 08, 2014, 04:13:04 AM
 #6629

Hi Icon, thanks for the note. You may not have understood that the conversation was about luck, not declining BTC rewards corresponding with BTC Guild's smaller size relative to the network.
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April 08, 2014, 02:23:02 PM
 #6630

While the pool's luck is down, the difficulty rate is also skyrocketing.  It just seems that the pool is current under performing by at least 33%.  Hopefully things will turn around and the only way to find out is sit and wait for the law of averages to do its thing. Hopefully luck will turn to assist paying of investment before difficulty jumps another gazillion-quadrillion.

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April 08, 2014, 08:37:41 PM
 #6631

While the pool's luck is down, the difficulty rate is also skyrocketing.  It just seems that the pool is current under performing by at least 33%.  Hopefully things will turn around and the only way to find out is sit and wait for the law of averages to do its thing. Hopefully luck will turn to assist paying of investment before difficulty jumps another gazillion-quadrillion.

This mentality only goes so far until your logical brain should kick in and see that a few cards have been removed from the deck

There is a systemic issue that hasn't been addressed..  I am not an expert in pool mining but have read up a bit of late and there are some things that other pools might be doing to gain undue advantage and/or doing things to this pool to set it back a few notches


BTCGuilds lower performance and Eligius constantly getting attacked from all ends the past month add up to a war that one side is playing and the other just think it is raining rocks and will clear up soon




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April 08, 2014, 10:24:20 PM
 #6632

Sharing the alert...


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April 08, 2014, 10:35:30 PM
 #6633

Is block 294838 orphaned (looks like it went to GHASH.IO)??  It still says "waiting for a confirmation" although several blocks have been found by the network since, including 294849 by BTCG.

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April 08, 2014, 11:57:00 PM
 #6634

I just switched mining pools to BTC Guild but even though the pool dashboard shows that I am hashing around 1.2TH, the BTC Earned is all zeros, any idea when the Pool will show earnings, I know 1.2TH is supped to make around .09 BTC/day.

Am I missing something?

Thank you
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April 09, 2014, 12:00:06 AM
 #6635

I just switched mining pools to BTC Guild but even though the pool dashboard shows that I am hashing around 1.2TH, the BTC Earned is all zeros, any idea when the Pool will show earnings, I know 1.2TH is supped to make around .09 BTC/day.

Am I missing something?

Thank you

You don't start getting paid until a shift has been completed.  Read up on it here

https://www.btcguild.com/index.php?page=support&section=howamirewarded

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April 09, 2014, 01:15:20 AM
 #6636

I just switched mining pools to BTC Guild but even though the pool dashboard shows that I am hashing around 1.2TH, the BTC Earned is all zeros, any idea when the Pool will show earnings, I know 1.2TH is supped to make around .09 BTC/day.

Am I missing something?

Thank you

You don't start getting paid until a shift has been completed.  Read up on it here

https://www.btcguild.com/index.php?page=support&section=howamirewarded

Thank you for the info, new to this, from my dashboard I was part of 2 shifts with very small % of ppln shits but still don't see anything on my BTC Balance, just curious how long it will take for any BTC to appear in my account.
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April 09, 2014, 01:28:56 AM
 #6637

I just switched mining pools to BTC Guild but even though the pool dashboard shows that I am hashing around 1.2TH, the BTC Earned is all zeros, any idea when the Pool will show earnings, I know 1.2TH is supped to make around .09 BTC/day.

Am I missing something?

Thank you

You don't start getting paid until a shift has been completed.  Read up on it here

https://www.btcguild.com/index.php?page=support&section=howamirewarded

Thank you for the info, new to this, from my dashboard I was part of 2 shifts with very small % of ppln shits but still don't see anything on my BTC Balance, just curious how long it will take for any BTC to appear in my account.


It should start stabilizing after 24hrs +10 shifts

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midyatspor
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April 09, 2014, 01:32:55 AM
 #6638

I just switched mining pools to BTC Guild but even though the pool dashboard shows that I am hashing around 1.2TH, the BTC Earned is all zeros, any idea when the Pool will show earnings, I know 1.2TH is supped to make around .09 BTC/day.

Am I missing something?

Thank you

You don't start getting paid until a shift has been completed.  Read up on it here

https://www.btcguild.com/index.php?page=support&section=howamirewarded

Thank you for the info, new to this, from my dashboard I was part of 2 shifts with very small % of ppln shits but still don't see anything on my BTC Balance, just curious how long it will take for any BTC to appear in my account.


It should start stabilizing after 24hrs +10 shifts

Thank you, very small amount of BTC just showed up.
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April 09, 2014, 01:44:34 AM
 #6639

I just switched mining pools to BTC Guild but even though the pool dashboard shows that I am hashing around 1.2TH, the BTC Earned is all zeros, any idea when the Pool will show earnings, I know 1.2TH is supped to make around .09 BTC/day.

Am I missing something?

Thank you

Midya I am right behind you with about 1.1THs (5 S1's) and get a consistent .1 per day from guild.  I have not even seen a big decrease with difficulty until the latest jump when I dipped below .1 for the first time. I could show you screen shots of my wallet every day .1 deposit like clockwork.
Let it run for a day or two, you will see it level up.  
Antminer S1's on guild are the most stable platform I have seen so far. My ants have been running for several months without even so much as a reboot and my accept rate is %99.78

Now if the bloody coin would just stop crashing I'd be good to go!!

Edit:  5 S1's + about 100GHs of cubes/USBs


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April 09, 2014, 01:56:24 AM
 #6640

Welcome to the Guild, TH+ folks. It's good to have you. Smiley
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