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1901  Bitcoin / Bitcoin Discussion / Re: Alert: chain fork caused by pre-0.8 clients dealing badly with large blocks on: March 12, 2013, 05:01:04 AM
Is it concerning at all that the devs and the large mining pools just colluded to do a 51% attack ?




good point, hah


re: no blocks on blockchain.info

http://blockchain.info/block-index/357994/000000000000005e291bf3293572918bd24bfda9c17ee863b26e8386b1fe1d22
1902  Bitcoin / Bitcoin Discussion / Re: Alert: chain fork caused by pre-0.8 clients dealing badly with large blocks on: March 12, 2013, 04:57:25 AM
re: miners haven't incentive to do anything.  Do they really?  Only if you're mining solo... otherwise all that matters is what the pool you're mining on is using.
to reply to myself

i think there would have been a lot less ppl running around if it had been made clear that all that really matters is what client the pool you're operating on is using

as a person that mines @ a pool, i'm not downgrading from 0.8

nor am i downgrading my relay node
1903  Bitcoin / Pools / Re: [600 GH/s]HHTT -Selected Diff/Stratum/PPS/Paid Stales/High Availability/Tor on: March 12, 2013, 04:34:01 AM
Downloading blockchain on 0.7 bitcoind.  Pool will be back up when that is done.  Sorry for all the chaos.


don't have a backup pool configured anymore, so i guess i'll just wait

hope it doesnt take like 8 hours =p
1904  Bitcoin / Bitcoin Discussion / Re: Alert: chain fork caused by pre-0.8 clients dealing badly with large blocks on: March 12, 2013, 04:32:26 AM
re: miners haven't incentive to do anything.  Do they really?  Only if you're mining solo... otherwise all that matters is what the pool you're mining on is using.
1905  Other / Beginners & Help / Re: Potential blockchain weakness during tie on: March 10, 2013, 03:57:28 PM
http://blockchain.info/tx/290727df9b999ec9329b6017289c298342cf63fa3c39cf03318dfe52787ce482

http://blockchain.info/tx/7dcb47f5851199088e83e6f0a00387d357521f1a133540ce77c6216a955cf776

so the bitminter one is picked up by the blockchain spies 1 second after the btcguild one


ah, so prophetic
1906  Bitcoin / Bitcoin Technical Support / Re: 5830 Problem on: March 09, 2013, 07:27:22 AM
Hi, I'm mining using a 5830 and only getting around 170Mhash/s. Even OC, I still only get around 200 Mhash/s. I'm currently running catalyst v12.10 and opengl version 6.14.10.11931. Most people say that they normally get at least 300Mhash/s. What should I do to try to fix this?
use

www.nogleg.com/archive/barelyclocked.rar

unrar it somewhere, type barelyclocked

if there's one gpu, it'll be gpu 0

so then

barelyclocked gpu=0 memory=160
barelyclocked gpu=0 core=1000
barelyclocked gpu=0 vddc=1.163 (not necessary in this case, since it defaults to performance level 3)

then cgminer should run at 128 worksize, 2 vectors, and you should get ~320-325mhash

most cards can run at 900-930/160 @ 1.063v & 730-790/130 @ 0.95v, which is better depending on the cost of your electricity.  the 1.063v option is better in almost all cases

manually edit cgminer.conf file so that your fan speed doesnt max out at 85%
1907  Other / Beginners & Help / Re: Potential blockchain weakness during tie on: March 08, 2013, 11:17:13 AM
Quote
And what are you thinking they will do with this one block that they create?  To do anything destructive they would need to have the ability to regenerate old blocks that are already part of the blockchain or sustain continuous control over all new blocks.  Generating a single block makes you a miner, not an attacker.

An attacker with 25% capacity might be able to notice a tie and then continually exploit it by causing subsequent ties. He could connect to every node so he's aware of exactly when someone else finds a block, and send out his own at that time (he has found one by now with p=0.5), to generate another tie. So, the probability of him generating n blocks in a row would be (1/2)^n; e.g. he'd have a 1/4 chance of controlling two blocks in a row.

How many blocks does an attacker need to generate in a row in order to cause trouble?

these two transactions are similar to what happens when there is a "tie" on blocks:

http://blockchain.info/tx/5ae820ef31cc5a3d1a34f7373d0b675cacc74786c160317d8648c24933f55874

First Seen   2013-03-08 11:04:13, relayed 1566

http://blockchain.info/tx/7a6a8ea2c4b2eed6b5ceee2d1b3783e293f00773a6d7f9cc5ac106b826efd49d

First Seen  2013-03-08 11:04:13, relayed 63


not really much relevance anyway.  what is someone going to do with this evil tie breaker block?   maybe if it was an evil tie breaker block followed up by another 5 or so.. anything w/ improper transactions would get turned down by 99% of nodes (if snoopy is running somewhere, it'd grab it)




but really the closest you'll get to ties are when some pool with a well connected bitcoind is a few seconds later than one without..   btcguild comes to mind, they've had at least two clear losers a few seconds and a few transactions earlier than some other pools, but got lucky by getting next block anyway..  p2pool would be another good example (depending on who solves it)

(oh, in case someone doesn't look at the transactions themselves instead of the node list:

#1

http://blockchain.info/tx-index/59188147/5ae820ef31cc5a3d1a34f7373d0b675cacc74786c160317d8648c24933f55874

#2

http://blockchain.info/tx-index/59188145/7a6a8ea2c4b2eed6b5ceee2d1b3783e293f00773a6d7f9cc5ac106b826efd49d

crafty.. i guess... the 145 one was actually sent first

.. oh, is it just me, or did satoshi dice really get owned there?
1908  Economy / Speculation / Re: Wall Observer - MtGoxUSD wall movement tracker on: March 06, 2013, 09:46:58 AM
There are a huge amount of cold storage coins coming out and probably being thrown into the lava at Mt Gox.

http://blockchain.info/charts/bitcoin-days-destroyed-min-year?showDataPoints=false&timespan=&show_header=true&daysAverageString=7&scale=0&address=

well, i tried to market sell some bitcoins on mtgox and they've been sitting there for 10 minutes

ok, after i wrote this i went and relisted it as a sell at $1 and it sold for 45

it was $46.85 or something like that when i initially put it in as a market sell

Gox hardly refreshes their latest price quote, by the time you issue the order the bid you saw could have been long gone.
it was a market sell, that's supposed to be executed immediately

it wasn't

i removed it after 10 minutes (this was an hour ago, or so)

then i put in a sell order at $1

and that went through after about 5 seconds

but perhaps it was just my market order finally completing, even though i had removed it already
1909  Economy / Speculation / Re: Wall Observer - MtGoxUSD wall movement tracker on: March 06, 2013, 09:23:37 AM
There are a huge amount of cold storage coins coming out and probably being thrown into the lava at Mt Gox.

http://blockchain.info/charts/bitcoin-days-destroyed-min-year?showDataPoints=false&timespan=&show_header=true&daysAverageString=7&scale=0&address=

well, i tried to market sell some bitcoins on mtgox and they've been sitting there for 10 minutes

ok, after i wrote this i went and relisted it as a sell at $1 and it sold for 45

it was $46.85 or something like that when i initially put it in as a market sell
1910  Economy / Speculation / Re: Wall Observer - MtGoxUSD wall movement tracker on: March 06, 2013, 09:17:34 AM
There are a huge amount of cold storage coins coming out and probably being thrown into the lava at Mt Gox.

http://blockchain.info/charts/bitcoin-days-destroyed-min-year?showDataPoints=false&timespan=&show_header=true&daysAverageString=7&scale=0&address=

well, i tried to market sell some bitcoins on mtgox and they've been sitting there for 10 minutes
1911  Economy / Computer hardware / Re: [WTB] pci-e riser cards on: March 04, 2013, 07:29:40 AM
wanting to buy 2x pci-e x16 to x16 riser cards and 2x pci-e x1 to x16 riser card.

willing to pay up to 0.45BTC shipped for all 4 combined.

i live in edmonton AB, Canada

http://www.ebay.com/itm/290795009786

shipping to worldwide!   but excludes Canada  Huh Huh
1912  Economy / Computer hardware / Re: [WTS] 9 top of the line rigs, whole or parted out (now with pricing) on: March 04, 2013, 06:53:04 AM
Are the visiontek 7970's reference cards? I'm interested in a couple of them.

Yes, all reference
how long have the 7970's been mining?  did you get them when they were first introduced?

i'd like to grab a 7970 or 6990 for gaming at some point

(though I do get the feeling I should probably wait a couple months, seems like some ppl are still buying GPUs to *start* mining with)
1913  Other / Beginners & Help / Re: CoinLab Repatriating Bitcoin Funds to US? No Thanks! on: March 03, 2013, 11:19:14 PM
Just one more reason to expatriate to St. Kitts.


malta has some very easy to meet residency requirements

ed: oh, can they move your money?  i was under the assumption i'd have to accept some new ToS whenever this move is finalized (mar 20th?)... and at that point i'd refuse the ToS and just withdraw all to dwolla?

Quote
The way they see it, is that it is THEIR currency and as such they like to be able to track it down to the n'th degree.
since 9-11, yeah

'patriot act' and all that
1914  Bitcoin / Pools / Re: [2000 GH/s] BitMinter.com [ASIC support: var diff, Stratum, GBT, rolllntime] on: March 03, 2013, 04:18:04 PM
okay i am like you in that i sell my coins as they come it. mentally the idea of holding on to them is something I was  not able to do.

 you mention  an offline usb stick for storage  how would i do this?  tia phil
Just buy some cheap USB flash drive, stick it in a USB slot, set data directory to that drive via datadir=F:\bitcoin (or whatever) in bitcoin.conf, download blockchain, then take it out...  

or, better yet, just make a wallet.dat on this flash drive with some address, and then send all your bitcoins to one of those addresses when you get some.  then you never even have to put the USB stick (and thus the wallet w/ all the coins) in your computer until needed (though in such a case I'd put it on at least 3 sticks if it had a decent chunk of coins on it)

you can usually find some decent ones on slickdeals for $5 or less.

like:

http://slickdeals.net/f/5874998-Kingston-Technology-DataTraveler-Special-Edition-USB-Flashdrive-16GB-7-99-8GB-4-99-Best-Buy

http://slickdeals.net/permadeal/90442/meritline-usb-2.0-sd-sdhc-mmc-mini-sdmsm2-all-in-one-memory-readerwriter

http://slickdeals.net/f/5882760-TDK-16-GB-USB-2-0-Mobile-USB-Flash-Drive-7-99-or-5-99-with-orders-totaling-10-or-more-Limit-1-per-customer


(all dead now, but i'm sure there'll be another good one within a couple days)

or if you still have a 1.44 floppy drive or something.
1915  Bitcoin / Pools / Re: [ANN] Stratum mining protocol - ASIC ready on: March 03, 2013, 04:06:58 PM
zvs, what software is on server side? These late and duplicated notifications looks like bug in server side implementation.
Oh, Windows 7 Ultimate 64bit

I was going to retest it later with minerd running 1 thread and affinity to 1 core with graphic cards at something like 0 intensity to see if that might have been causing it... (minerd wasn't maxed before, but it was still pretty heavy on the cpu)
1916  Other / Beginners & Help / Re: New on: March 03, 2013, 08:08:08 AM
New to the whole bitcoin thingy. wondering something..
I am trying the mining thing, I don't completly understand. My computer says it is going at 0.0044 per day. at like 33 Mhps.
is that good?
will i ever make any bitcoins like this? if not what are some other ways to make bitcoins

nigerians have been known to locate 'floating' wallets of large quantities of bitcoin

wait for emails
1917  Economy / Service Discussion / Re: Official Gox / CoinLab Integration and Transition FAQ on: March 02, 2013, 06:38:00 AM
Hi Bracek, what do you mean by 'access'? Do you mean read access? If so, then once we've transitioned, our chief compliance officer will have access to verification documents, or someone else on our AML/KYC team.

Hang on a second.  Where in the MtGox TOS does it say MtGox has the authority to sell sensitive identity information to third parties without the express written permission of the account holder.   Last time I checked with wasn't a merger.  I gave my identity documents to MtGox not Coinlabs.

Did it even occur to you that you have no legal right to that information.  Is it going to take a lawsuit?

You had your chance to keep your identity documentation private and from the sound of things, you blew it.

In my mind, sending off one's identity docs to anyone is a one-time thing.  Think of it as a tattoo or a circumcision.  You might get lucky and realize no ill effects, but it's damn hard to undo completely.  Maybe getting all lawyered up (likely a yawn inspiring hollow threat like 99.9% of them) might help, but how are you going to know?



i'm not sure what country you live in, but since this new entity is going to be located in the USA, there are privacy laws in the USA that would prevent such information from being handed over w/o person's acknowledgement
1918  Bitcoin / Development & Technical Discussion / Re: Exchange Rate Backbone on: March 02, 2013, 05:15:47 AM
never heard of it
1919  Bitcoin / Pools / Re: [100 GH/s] HHTT - Selected Difficulty/Stratum/PPS/Paid Stales/High Availability on: March 01, 2013, 06:38:19 PM
what is he doing... 1Zevusze7BjTpp4srJhx4zkRBxpbgwU4A

gambling
1920  Economy / Digital goods / Re: [WTS] 1337 BitCoin Addresses! - Only 0.085BTC per Address! on: March 01, 2013, 12:58:12 PM
How does this work? I assume you will give the private key to an address that someone buys. But then you also have the keys. So, after purchasing from you, you can still access any funds that are sent to this address.

Or, is there something that I have not understood.

It doesn't work.

But 4 letter vanitygen addresses are trivial, regardless..
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