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Author Topic: [CLOSED] BTC Guild - Pays TxFees+NMC, Stratum, VarDiff, Private Servers  (Read 829596 times)
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lophie
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April 08, 2013, 08:49:28 PM
 #2141

I've received a response from the ASICMINER team.  They are aware of BTC Guild's growing share of the network, and have told me that their next batches of power will be split among more pools or even solo mining to avoid a pool reaching 51%.  They have also identified that selling hardware is on the table if their own share of the network approaches the 51% level.  This doesn't mean the 51% plan in place will change, but it hopefully means the pool will not hit the 45% stage, and any increases in fees if we hit 40% should only last for 1-2 weeks.

How does it feel to have the power to destroy the universe  Angry

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April 09, 2013, 05:07:18 AM
 #2142

Just another reminder:  Lock your wallet address if you're positive you won't lose control of your wallet!  There are multiple keyloggers out there right now that will look for logins to Bitcoin pools.  If your wallet is locked, even a compromised account is completely safe, outside of the person messing with worker settings/names.  Your coins cannot be withdrawn to another address if your address is locked!

R.I.P. BTC Guild, 2011 - 2015.
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April 09, 2013, 05:10:50 AM
 #2143

Just another reminder:  Lock your wallet address if you're positive you won't lose control of your wallet!  There are multiple keyloggers out there right now that will look for logins to Bitcoin pools.  If your wallet is locked, even a compromised account is completely safe, outside of the person messing with worker settings/names.  Your coins cannot be withdrawn to another address if your address is locked!

why dont you just implement 2-factor authentication?

Locked address is a bandage, not a solution.

btw, where is pool server located for US? my connection isnt great compared to other pools. I'm using stratum.
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April 09, 2013, 05:51:39 AM
 #2144

I've re-enabled a feature that was turned off a year ago when the pool began sending too many emails and ended up being throttled to the point it was unusable.  When changing your email or wallet address from now on, an email will be sent to your current email to confirm the change before it is made active.  It still won't solve the most common attack vector (compromised email + password reset request), but it will prevent a keylogger that only grabbed your pool credentials and not your email credentials.  Just make sure it isn't the same password on both!




btw, where is pool server located for US? my connection isnt great compared to other pools. I'm using stratum.

The servers for 'stratum.btcguild.com' are actually with OVH in Canada now.  I've had to diversify in recent months to make DDoS attacks less effective (no single point of failure for all servers like the previous colocation).  I'm working on diversifying further with colocation in multiple datacenters.  Until recently the pool was not earning enough to pay for multiple colocations, and I had to wait to see if this was going to be another $32-40 bubble followed by another rapid crash before I invested money in buying more hardware and paying the much higher costs to colocate.

R.I.P. BTC Guild, 2011 - 2015.
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April 09, 2013, 07:31:20 AM
 #2145

Update:  My previous post is still accurate, there are definitely keyloggers out there that will now look for pool login credentials.  However, after talking to a few victims in the last few days, it looks like the compromised accounts had a few things in common, and the one that sticks out the most is many of them had accounts on other pools and Bitcoin websites dating back to 2011, and used the same credentials.  For those who weren't around in 2011, there were a significant number of Bitcoin related sites that had full database leaks due to MySQL injections, and many of them had either plaintext passwords, or unsalted md5 passwords.

I would recommend anybody who has ever used the same credentials on ANY other site (but especially if it was Bitcoin related) as what they used on BTC Guild to change their BTC Guild password.  I'm working on adding back this functionality to the Settings page, but until then you can request a password reset at https://www.btcguild.com/index.php?page=reset_password


R.I.P. BTC Guild, 2011 - 2015.
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SebastianJu
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April 09, 2013, 11:18:38 AM
 #2146

@eleuthria... i wanted to know how Asicminer is working on your pool, with which protocol and so on. I found they use stratum with PPLSN. Transactions are shared. The transaction fees arent high yet, mostly under 1% but its an addition to the 25BTC per block.
What i wonder is that i read that BTCGuild doesnt do NMC on stratum even though stratum allows this. I have read here https://bitcointalk.org/index.php?topic=166213.msg1733270#msg1733270 that mining NMC on top of BTC can give 13% on top of the earnings. And i have read that mining NMC doesnt need additional hashpower because it only changes the coinbase used for mining bitcoins.
Now im asking myself why NMC-Mining with stratum isnt enabled with your pool. Is there some disadvantage with it i didnt notice or how is it? It seems only bitminter allows mining NMC with stratum at the moment. And 13% more income would mean more income for you too through the fees. Or how is this case?

Edit: Ok, maybe NMC-Mining isnt possible with stratum at all. I wonder why this should be but if it cant be done...

 

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April 09, 2013, 12:50:43 PM
 #2147

Update:  My previous post is still accurate, there are definitely keyloggers out there that will now look for pool login credentials.  However, after talking to a few victims in the last few days, it looks like the compromised accounts had a few things in common, and the one that sticks out the most is many of them had accounts on other pools and Bitcoin websites dating back to 2011, and used the same credentials.  For those who weren't around in 2011, there were a significant number of Bitcoin related sites that had full database leaks due to MySQL injections, and many of them had either plaintext passwords, or unsalted md5 passwords.

I would recommend anybody who has ever used the same credentials on ANY other site (but especially if it was Bitcoin related) as what they used on BTC Guild to change their BTC Guild password.  I'm working on adding back this functionality to the Settings page, but until then you can request a password reset at https://www.btcguild.com/index.php?page=reset_password

These incidents were what caused me to get serious about using different random passwords for every site.  Bitcoin has no undo button, and there is no one that you can go to for help if you get screwed.  Secure password management practices were always a good idea, but in the bitcoin world, they are absolutely necessary.

p2pcoin: a USB/CD/PXE p2pool miner - 1N8ZXx2cuMzqBYSK72X4DAy1UdDbZQNPLf - todo
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BitMinerN8
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April 09, 2013, 01:34:04 PM
 #2148

Update:  My previous post is still accurate, there are definitely keyloggers out there that will now look for pool login credentials.  However, after talking to a few victims in the last few days, it looks like the compromised accounts had a few things in common, and the one that sticks out the most is many of them had accounts on other pools and Bitcoin websites dating back to 2011, and used the same credentials.  For those who weren't around in 2011, there were a significant number of Bitcoin related sites that had full database leaks due to MySQL injections, and many of them had either plaintext passwords, or unsalted md5 passwords.

I would recommend anybody who has ever used the same credentials on ANY other site (but especially if it was Bitcoin related) as what they used on BTC Guild to change their BTC Guild password.  I'm working on adding back this functionality to the Settings page, but until then you can request a password reset at https://www.btcguild.com/index.php?page=reset_password

These incidents were what caused me to get serious about using different random passwords for every site.  Bitcoin has no undo button, and there is no one that you can go to for help if you get screwed.  Secure password management practices were always a good idea, but in the bitcoin world, they are absolutely necessary.

Very true. I have used LastPass.com linked with multiple YubiKeys for a couple years now. Very solid service and device. And for $55 it's worth it for 2 factor authentication. https://store.yubico.com/store/catalog/index.php?cPath=6 The YuiKeys also work on blockchain.info if you use that site and I know other sites are getting on board.
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April 10, 2013, 01:58:41 AM
 #2149

The primary getwork server is basically under attack by a very large botnet trying to connect (connections in the 10s of thousands, all trying to open longpolls).  Working on the problem.  Stratum servers as usual are not being affected.

R.I.P. BTC Guild, 2011 - 2015.
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April 10, 2013, 02:00:24 AM
 #2150

Do you really have to keep getwork? What was the reason behind that again?

Bitcoin network and pool analysis 12QxPHEuxDrs7mCyGSx1iVSozTwtquDB3r
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April 10, 2013, 02:06:49 AM
 #2151

Do you really have to keep getwork? What was the reason behind that again?

A lot of users still refuse to update their miners to Stratum or go through the trouble of running a stratum proxy for miners that have no support (like phoenix).  I'm very hesitant to cut it off entirely (it's ~3.5 TH/s), so I've just been trying to urge users to move to Stratum by making it less and less obvious how to connect to getwork on the website, and by not offering the level of support that Stratum gets (getwork is noticeably less efficient than Stratum on BTC Guild due to overloaded getwork servers).

R.I.P. BTC Guild, 2011 - 2015.
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organofcorti
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April 10, 2013, 02:47:17 AM
 #2152

Do you really have to keep getwork? What was the reason behind that again?

A lot of users still refuse to update their miners to Stratum or go through the trouble of running a stratum proxy for miners that have no support (like phoenix).  I'm very hesitant to cut it off entirely (it's ~3.5 TH/s), so I've just been trying to urge users to move to Stratum by making it less and less obvious how to connect to getwork on the website, and by not offering the level of support that Stratum gets (getwork is noticeably less efficient than Stratum on BTC Guild due to overloaded getwork servers).

3.5Thps? Losing that would address some of the "BTCGuild owns too much of the network" concerns.

Bitcoin network and pool analysis 12QxPHEuxDrs7mCyGSx1iVSozTwtquDB3r
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April 10, 2013, 03:40:30 AM
 #2153

i joiend you. my main GPU miner works finme yet the desktops [i have alot and yes i knwo they not efficent but i got em free] show 'no openGL miner but u can mien on CUDa/CPU'. yet when i do that it says 'nothign to mien on' and 'no opengl found'.

pool doesnt allow nonGPU minign or whats the problem?

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April 10, 2013, 03:54:37 AM
 #2154

i joiend you. my main GPU miner works finme yet the desktops [i have alot and yes i knwo they not efficent but i got em free] show 'no openGL miner but u can mien on CUDa/CPU'. yet when i do that it says 'nothign to mien on' and 'no opengl found'.

pool doesnt allow nonGPU minign or whats the problem?

If you actually do have GPUs on those machines then try updating the drivers. If you don't have a GPU in those machines you can only CPU mine.

Bitcoin network and pool analysis 12QxPHEuxDrs7mCyGSx1iVSozTwtquDB3r
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eleuthria
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April 10, 2013, 05:16:59 AM
 #2155

Do you really have to keep getwork? What was the reason behind that again?

A lot of users still refuse to update their miners to Stratum or go through the trouble of running a stratum proxy for miners that have no support (like phoenix).  I'm very hesitant to cut it off entirely (it's ~3.5 TH/s), so I've just been trying to urge users to move to Stratum by making it less and less obvious how to connect to getwork on the website, and by not offering the level of support that Stratum gets (getwork is noticeably less efficient than Stratum on BTC Guild due to overloaded getwork servers).

3.5Thps? Losing that would address some of the "BTCGuild owns too much of the network" concerns.

That's why the 45% step in the 51% plan is removing getwork entirely.

R.I.P. BTC Guild, 2011 - 2015.
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organofcorti
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April 10, 2013, 06:53:44 AM
 #2156

Do you really have to keep getwork? What was the reason behind that again?

A lot of users still refuse to update their miners to Stratum or go through the trouble of running a stratum proxy for miners that have no support (like phoenix).  I'm very hesitant to cut it off entirely (it's ~3.5 TH/s), so I've just been trying to urge users to move to Stratum by making it less and less obvious how to connect to getwork on the website, and by not offering the level of support that Stratum gets (getwork is noticeably less efficient than Stratum on BTC Guild due to overloaded getwork servers).

3.5Thps? Losing that would address some of the "BTCGuild owns too much of the network" concerns.

That's why the 45% step in the 51% plan is removing getwork entirely.

Ah, that's why the idea seemed so familiar to me when I thought of it  Wink

Bitcoin network and pool analysis 12QxPHEuxDrs7mCyGSx1iVSozTwtquDB3r
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April 10, 2013, 01:40:31 PM
 #2157

I will be taking down my last GetWork (BAMT) miner today.. Now a full CGMiner Fleet!

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April 10, 2013, 01:51:44 PM
 #2158

I will be taking down my last GetWork (BAMT) miner today.. Now a full CGMiner Fleet!

Grats! I converted all my remaining BAMT rigs over at the beginning of March. I didn't want to mess with the GPU configs tuning cgminer since these rigs have been running for almost a year now uptime wise, so I just setup a Stratum proxy on a Pi and only updated the pool config. Solid for over a month.
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April 10, 2013, 02:05:12 PM
 #2159

Anyone else having issues connecting to the site?

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April 10, 2013, 02:11:25 PM
 #2160

Anyone else having issues connecting to the site?

Yup, can't connect at all
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