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821  Economy / Service Discussion / Re: mtgox account compromised...anyone else? on: June 09, 2013, 12:07:08 AM
not even sure what 2fa is, im guessing you mean an authenticator of some sort.  i did not have one in place because my phone does not support the google authenticator and i dont have a yubikey.

How to use 2-factor auth on mtgox, even without a smartphone
 - http://bitcointalk.org/index.php?topic=111943.0


This type of loss happens a lot:

MtGox account got cleared out
 - http://bitcointalk.org/index.php?topic=85533.0

All BTC disappeared from my Mt. Gox account
 - http://bitcointalk.org/index.php?topic=88368.0

Another:
 - http://bitcointalk.org/index.php?topic=80562.msg941759#msg941759

And another: My mtgox account got compromised, what can I do?
 - http://bitcointalk.org/index.php?topic=84585.0

Yet more: MT.Gox account hacked - lost 2k USD - MT.GOX will not explain how.
 - http://bitcointalk.org/index.php?topic=89142.0

And more again: Bitcoins stolen from MtGox
 - http://www.reddit.com/r/Bitcoin/comments/x8lcv/bitcoins_stolen_from_mtgox

And yet more: Stolen from Mt.Gox coins. Help return the coins.
 - http://bitcointalk.org/index.php?topic=119816.0

Or more here: Email from Mt.Gox this morning.
 - http://www.reddit.com/r/Bitcoin/comments/z0na5/email_from_mtgox_this_morning

And even more here: I just had $715 stolen out of my Mt. Gox account.
 - http://www.reddit.com/r/Bitcoin/comments/12j9gi/i_just_had_715_stolen_out_of_my_mt_gox_account

And the biggie: Bitcoinica MtGox account compromised
 - http://bitcointalk.org/index.php?topic=93074.0

With more here: Unauthorized Account Activity on my Mt.Gox Account - Account Compromised/Hacked?
 - http://bitcointalk.org/index.php?topic=94140.0

And even more: *MY* Mt Gox Account was Hacked - lost it all today... now what!?
 - http://bitcointalk.org/index.php?topic=137795.0

Ditto: My MtGox account was just exploited - 3 BTC stolen
 - http://bitcointalk.org/index.php?topic=141816.0

Ditto on the ditto: Just lost 190 bitcoins through Mt. Gox
 - http://bitcointalk.org/index.php?topic=141831.0

And other ones get added to the list: Unauthorized withdrawal on Mt. Gox
 - http://bitcointalk.org/index.php?topic=147070.0

And then here: How I got robbed of 34 btc on Mt.Gox today
 - http://bitcointalk.org/index.php?topic=173227.0

And recently this: My MTGOX account was hacked!
 - http://bitcointalk.org/index.php?topic=186422.0

And now yours: mtgox account compromised...anyone else?
 - http://bitcointalk.org/index.php?topic=229300.0

And another fairly recent one: My funds and BTC have just disappeared from my Gox account!
 - http://bitcointalk.org/index.php?topic=174556

And on other services as well. Here same thing happened to some GLBSE users:
 - http://bitcointalk.org/index.php?topic=84893.0

And elsewhere, BitMarket.eu in this instance:
 - http://bitcointalk.org/index.php?topic=5441.msg1259168#msg1259168

And on bitcoin.de as well: Bitcoins stolen from bitcoin.de.
 - http://bitcointalk.org/index.php?topic=130264.0


In none of these was the person using multi-factor authentication. Mt. Gox has had Yubikey support for a while. Mt. Gox accounts now support Google Authenticator:
 - https://mtgox.com/press_release_20120605.html

If the exchange you are storing funds with doesn't provide OTP, consider using a different exchange:
 - http://bitcoin.stackexchange.com/questions/4113/which-two-factor-authentication-methods-are-available-at-which-exchanges

If you are storing funds in an EWallet, consider using a paper wallet.

Again, here is a fantastic guide: How to use 2-factor auth on mtgox, even without a smartphone (from a second device, of course, not from the same computer you log in on).
 - http://bitcointalk.org/index.php?topic=111943.0
822  Economy / Trading Discussion / Re: Interesting conversation with a retailer who formerly accepted Bitcoin on: June 08, 2013, 11:36:11 PM
And the bitfloor hacker thanks you for your order.  Grin

Ouch.

Well, fortunately now there is integration with your shopping cart provider (3DCart)  which works with BitPay so that you don't have to be exposed to counterparty risk of doing it yourself through an exchange.  Looks like you're already doing this:
 - http://forums.3dcart.com/27113-post5.html
 
823  Economy / Services / Re: Nice, DeadMansSwitch.net now accepting bitcoin... on: June 08, 2013, 10:52:25 PM
Incidentally, the main URL site cannot be accessed securely but there is an alternate URL that is secure:
 - https://deadmansapp.appspot.com
824  Economy / Service Announcements / Re: 1st Greek Hotel & Restaurant that Accepts Bitcoins! on: June 08, 2013, 09:38:39 PM
Yes it's true!! We have been there and stayed for a couple of days and we paid only with BTC....

http://www.porto-kagio.com

Have a look and enjoy Greece!!!

So the name of the hotel is Mani - Akrotiri?   

Located in Porto Kagio:
 - http://goo.gl/maps/P9ZMf
825  Bitcoin / Mining speculation / Re: Difficulty and BTC value on: June 08, 2013, 05:29:37 PM
So I go back to the statement that difficulty and price are nowhere near related.  If they are related, show me the equation.. I've looked at this and tried, there is no statistical correlation.

There certainly is correlation:


 - https://docs.google.com/a/digicoast.com/spreadsheet/oimg?key=0AmcTCtjBoRWUdHVRMHpqWUJValI1RlZiaEtCT1RrQmc&oid=10&zx=cdrtjfh4wgfg
 - https://docs.google.com/a/digicoast.com/spreadsheet/ccc?key=0AmcTCtjBoRWUdHVRMHpqWUJValI1RlZiaEtCT1RrQmc (underlying data)

Clearly, difficulty does tend to rise when the exchange rate rises, difficulty drops are correlated as well though less so.

But the relationship is that difficulty follows price, and not the other way around.
 - http://blog.brocktice.com/2011/05/25/the-relationship-between-bitcoin-price-and-difficulty/
826  Bitcoin / Bitcoin Discussion / Re: Please help get bitcoins accepted at Freelancer on: June 08, 2013, 05:16:30 PM
And if freelancer accepted bitcoins, you could point anyone who wanted to make a few BTC to that site with so many ways to make money.

You are assuming that if they accept bitcoins as payment that they then pay out bitcoins to the freelancer/contractor.   That would be nice but each side of it is independent -- they could accept Bitcoin payment and then pay out fiat,  or hey could accept fiat and then pay out bitcoin as well.     I know these sites have two problem areas ..., one being payment card/bank transfer fraud where the payment gets reversed (or claimed that it was not authorized).    The other is with abuse where the "gig" was fake -- and was instead a front for money laundering.

I don't know that a Freelancer will want Bitcoin to be used.   Payment fraud (reversals/chargebacks) is one reason freelancer/contractors aren't working directly for others.  But with Bitcoin payment there's no chargebacks.  Thus there's no risk to dealing directly with an unknown party as long as services are pre-paid by the hiring party.

So Freelancer, oDesk, etc. all rather enjoy the current necessity to use an intermediary.

They are certainly aware of Bitcoin.  This is from more than two years ago:

Incidentally, here's a talk by Michael Levinson, VP of Product, oDesk, which has a lot of freelancers from developing nations.  He describes the challenges to (and importance of) paying those contract workers.  Notice that the bitcoin topic just keeps coming up over and over by those in the audience.  (Which is interesting, because this video is [from May, 2011].)

 - http://vimeo.com/29287295
827  Economy / Services / Re: BillPayForCoins announces 0% Fees for 6 Months on: June 08, 2013, 11:29:54 AM
Really, you can pay anyone or any company. We just need your biller's contact info so we don't get into trouble when we pay your bills; why? FinCEN regulations. This is only temporary until everything is worked out in our backend, and the paperwork that is going to take some time to process is processed.

I see that has changed:

Quote
Who can I pay using BillPayForCoins?

Until we expand further, any payments that you wish to pay through BillPayForCoins.com must be to a Biller located in the United States and the payment must be for rent or for a Supplier.
- http://www.billpayforcoins.com/faq.php

828  Bitcoin / Legal / Re: Payward's (Kraken.com) GC Interview with Adam Levine on: June 08, 2013, 11:15:41 AM
starts at 12:27: 

And continues to 31:06.

GC as in General Counsel.   The description for the episode reads:
Quote
Constance Choi, Legal Council at Payward brings us up to speed on DC, Fincen & Treasury

This was a fantastic interview!

So this "meeting in Washington with Treasury", was this the same meeting that Gavin was describing where he'ld be meeting with Jennifer Shasky Calvery (director of FinCEN)?     I'ld like to know more about that meeting (who, when, where).
829  Bitcoin / Press / Re: 2013-06-07 LeWeb London 2013, The Pros & Cons of Bitcoin on: June 08, 2013, 10:00:50 AM
http://www.youtube.com/watch?v=gNXZKwR6Lio

Pannel discussion on Bitcoin with Roger Ver, Tony Gallippi,  Shakil Kahn at LeWeb 2013,  one of the most influential tech conferences in the world.

For the question at the end about the "datacenters owning the bitcoins", a similar argument is how transaction fees go to the miners so the miners will be the ones who end up with the bitcoins.

That isn't a problem though because mining has a trivially low barrier to entry, such as this ASICMINER USB block erupter:

and thus there isn't much seigniorage over the long run.

This is in contrast to fiat banking which is a regulated monopoly, consuming hundreds of billions of dollars of fees just in the U.S. (e.g., NSF fees, account maintenance fees, etc.), merchant fees (paid by the merchant but whose costs are built into the price charged), etc.    With the banking system there is a structural flow of funds from the customers (user) to the provider (banks).  With bitcoin, that's just not the case.  

As far as the miners having control of the network, that's not really true.  The miners are essentially employees.  Tony described this perfectly at 30:50 in the video regarding the March 11 hard fork.  Hey said "which [side of the fork] which the majority of the users" is what determined which side the miners switched over to.      And that's a perfect example of where miners didn't call the shots, ... nor did the Bitcoin developers.   The mining capacity went to the side where those who pay the miners were on.    Because Mt. Gox is still such a huge percentage of the market, if they had been on v0.8 that side of the blockchain fork would probably have remained the longest chain and everybody else still on v0.7 would have needed to take emergency measures to accommodate the resulting locking issue.      i.e,  the economic majority (those who have coins and those who buy coins) are the ones who control the miners and not the opposite.
830  Economy / Service Announcements / Re: Bridgewalker's new value proposition: an exchange rate adjusted Bitcoin wallet on: June 08, 2013, 09:29:32 AM
Quote
Bridgewalker will ensure that you continue to have $20 worth of bitcoins, regardless of how the exchange rate develops.

This essentially becomes a current account denominated in USDs -- one that is funded with bitcoins which are converted to USDs and then stored by your service.

Wouldn't this make your service a target in the same manner as the digital currency exchanges who have recently lost their domains and/or bank accounts?
831  Bitcoin / Project Development / Re: Wi-Fi Hotspot company to be paid in bitcoin on: June 07, 2013, 10:48:25 PM
Does anyone live in an urban area and is willing to set up routers?

Can you describe further what it is you are asking help with?
832  Economy / Speculation / Re: The Weekend Dip Myth on: June 07, 2013, 06:28:40 PM
Bah.  I think this myth is BUSTED.  It used to work.  There still might be conditions where it works.

This week was a perfect example of how we had a pretty clear Weekend Dip green light, and following the Weekend Dip strategy would have yielded a nice gain.   

 - http://bitcoincharts.com/charts/mtgoxUSD#rg10zczsg2013-05-21zeg2013-06-08ztgSzm1g10zm2g25

Oh well, it's not reliable for trading anymore but I'll keep an eye out to see if the pattern returns.
833  Bitcoin / Meetups / Re: [SOCAL] Southern California Meetups on: June 07, 2013, 06:04:27 PM

Followup report of Wednesday's Bitcoin Meetup:

 - http://spelunk.in/2013/06/07/los-angeles-bitcoin-meetup-2/
834  Bitcoin / Meetups / Re: Any Bitcoin Meetups in the Los Angeles or Orange County Areas? USA on: June 07, 2013, 06:04:17 PM

Followup report of Wednesday's Bitcoin Meetup:

 - http://spelunk.in/2013/06/07/los-angeles-bitcoin-meetup-2/
835  Bitcoin / Meetups / Re: Any Bitcoin Meetups in the Los Angeles or Orange County Areas? USA on: June 07, 2013, 05:58:37 PM
Satoshi Square (Project Buttonwood)
In-Person trading
Wed. June 12, 2013  6:30-8:00 pm
Downtown, L.A.  (Grand Park)
 

Quote
Spelunk.in invites you to attend Los Angelesís first open air market! Satoshi Square LA will be Wednesday, June 12, from 6:30p-8:00p. Weíll be meeting up at the newly launched Grand Park downtown, at the fountain. This event is based on the Satoshi Square events in New York, and weíll be using a version of Josh Rossiís software to run the trades. The first 20 people to arrive will receive Gogocoin cards, filled with $5 worth of bitcoin each.

Grand Park is located in Downtown Los Angeles. Itís very close to City Hall and the Walt Disney Center. You can get there easily on the subway at the Civic Center stop. Parking for Grand Park is available in Lot 10 on N Broadway between First Street and Temple Street. Click here for a google map.

If youíre new to bitcoin, we can show you how they work. Canít wait to meet other bitcoin enthusiasts and trade on June 12!
- http://spelunk.in/2013/06/04/satoshi-square-la-june-12/
 - http://dealbook.nytimes.com/2013/05/06/a-push-for-a-bitcoin-buttonwood/
836  Bitcoin / Meetups / Re: [SOCAL] Southern California Meetups on: June 07, 2013, 05:58:11 PM
Satoshi Square (Project Buttonwood)
In-Person trading
Wed. June 12, 2013  6:30-8:00 pm
Downtown, L.A.  (Grand Park)
 

Quote
Spelunk.in invites you to attend Los Angelesís first open air market! Satoshi Square LA will be Wednesday, June 12, from 6:30p-8:00p. Weíll be meeting up at the newly launched Grand Park downtown, at the fountain. This event is based on the Satoshi Square events in New York, and weíll be using a version of Josh Rossiís software to run the trades. The first 20 people to arrive will receive Gogocoin cards, filled with $5 worth of bitcoin each.

Grand Park is located in Downtown Los Angeles. Itís very close to City Hall and the Walt Disney Center. You can get there easily on the subway at the Civic Center stop. Parking for Grand Park is available in Lot 10 on N Broadway between First Street and Temple Street. Click here for a google map.

If youíre new to bitcoin, we can show you how they work. Canít wait to meet other bitcoin enthusiasts and trade on June 12!
- http://spelunk.in/2013/06/04/satoshi-square-la-june-12/
 - http://dealbook.nytimes.com/2013/05/06/a-push-for-a-bitcoin-buttonwood/
837  Bitcoin / Bitcoin Discussion / Re: a 51% attack costs $20,000,000 and is devastating on: June 06, 2013, 06:52:37 PM
OP is right that you can buy a couple of hundreds of ASICs and then you could start reversing transactions and thous creating panic,

So when you have this 51% and want to do a double spend attack, who do you actually send your coins that you will later be double spending to?

Remember, this attack cost you $5 million in ASICs or something like that so you need to recoup a lot of money.   Exchanges don't let you withdraw much unless you have your identity verified.  Additionally, even if you have many anonymous accounts there will be limits to how many coins the exchange has in their hot wallet thus your hopes to withdraw coins before unleashing the 51% double spend attack will give little value.

The reason there hasn't been a malicious 51% attack is because there's no economic incentive to do so.  But this ASIC blast certainly is a nail biter if you consider how so few wafers are needed to top the current hashing capacity.    Technically and financially it is definitely doable.  There's just no payoff from carrying it out.
838  Economy / Speculation / Re: Trading Hours on: June 06, 2013, 06:34:11 PM
No. Also this has been discussed a few times before.

Here was my response in one of those threads (slightly different question ... relating to closing over the weekend)

Quote
An efficient capital market is a market that reflects all available news and information. An efficient market is also quick to absorb new information and adjust stock prices relative to that information. This is known as an informationally efficient market. Generally, efficient markets are expected to reflect all available information. If that is not the case, investors with the information may benefit leading to abnormal returns.

 - http://www.investopedia.com/exam-guide/cfa-level-1/securities-markets/emh-efficient-market-hypothesis.asp
 - http://en.wikipedia.org/wiki/Efficient-market_hypothesis

There aren't many (or any ?) methods for a retail investor to do forex trading over the weekend.   There was one, OANDA, but they claimed the low volume was too challenging for them where they would be taking on too much risk having to take the other side of the trades:
 - http://www.forexcrunch.com/oanda-closes-weekend-trading

Of course, there is a lot of forex trading over the weekend -- just not by you or I.  Central banks, corporate and institutional (government) bankers, multinational corporations and more are all trading 24x7.

So the market is efficient for them.  The rest of us stuck with a losing forex position thanks to news that occurs over the weekend are stuck with that increasingly deteriorating position until the markets open on Monday (or Tuesday, when Monday is a banking holiday like what happened this 3-day weekend.)  

That's not the definition of an efficient market.  Market-changing information occurs over the weekend as well (with announcements oftentimes timed specifically for release over the weekend.)  Bitcoin markets don't have this restriction.    That still doesn't mean bitcoin exchanges can be considered "efficient" though.  For instance, there was a pattern called the "weekend dip" in which buyers interested in buying had insufficient cash at the ready at the exchanges in order to buy and as a result there was little buying to counter a weekend selloff until new cash arrived at the exchanges when funds sent through the banking system were credited.   Lately, however, the weekend dip opportunity seems to have abated.

At some point a financial company will start using Bitcoin as the method for moving value in and out of other assets, including offering the ability for that to continue throughout the weekend as the way to differentiate that investment offering from the competition.
839  Other / CPU/GPU Bitcoin mining hardware / Re: What kind of rig should I get if no electricity cost? on: June 06, 2013, 04:57:53 PM
Hey, so I found this (expensive) place to live that has a fixed-cost electricity. I initially didn't want to live there because of the price, but since the utilities are fixed-cost, I'm kind of considering it now.

I was wondering if anyone else has done this

Back when GPUs were used and margins were thin, (e.g., around Dec. 2011, and then again Dec. 2012 right after "halving") the only ones making money were those who paid the least for electricity.

ASICs are soooooo  much more efficient on power and so few in production yet that the cost of electricity is a tiny fraction of the ownership cost.  For example, today the cost of electricity for a BFL Jalapeno (ASIC) running a full day is about twelve cents.   That does 5.5 Ghash/s, and earns at the current difficulty about $20 worth of coins (at the current exchange rate).    So the cost of electricity is less than 1% of the revenue generated from that electricity.     A person with free electricity mining using an ASIC has relatively no advantage over a person paying a high rate for electricity.  

If you are thinking "free" electricity gives justification for buying GPU-based hardware, think again.  ASICs are shipping hard and fast (as charted here: http://bitcoin.sipa.be/speed-lin-ever.png ), and the last of the GPU's days (for mining Bitcoins) are nearly over.  It could be less than a month or two that even those with free electricity will shut down their GPU rigs (or switch them over to an alt currency that GPUs are still useful on).  
840  Bitcoin / Development & Technical Discussion / Re: What if the devs are ordered by a US judge to include a government backdoor? on: June 06, 2013, 02:46:35 PM
Check out gitian and build your own binaries.

But how would I confirm that the official binary is compiled from the source on Github? Little point in running my own binary if 95% of all the nodes are from the official website and have a backdoor.

 - http://en.bitcoin.it/wiki/Release_process#Bitcoin_Open_Source_Release_Process
 - https://github.com/bitcoin/gitian.sigs
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