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2161  Other / Beginners & Help / Re: max addresses supported by a single wallet on: February 10, 2013, 02:22:06 AM
Is there a point at which you'd experience performance degradation?

With versions of the client earlier than the yet unreleased v0.8 the client had to do a ton or work with each spend and used a database that wasn't a great fit for the job.   With v0.8 the wallet.dat is still bdb, but a good chunk of the heavy lifting has been made easier by the switch to LevelDB.  So this means the problem with having lots of addresses and transactions in the wallet experience with versions prior to v0.8 should drop significantly if not disappear entirely.   I don't know if any benchmarks have been performed with v0.8 to know where the bounds are.  Under versions prior to v0.8, having as few as a thousand addresses with transactions caused behavior to range from "sluggish" to "unacceptable", depending on your hardware.

At some point in the future the client won't even use bdb whatsoever (not even for the wallet) anymore.

2162  Economy / Speculation / Re: Pump and Dump ? on: February 10, 2013, 01:39:59 AM
Maybe you're just trolling so you can keep accumulating:

Ha, that's classic (having one thread asking if it is a pump and dump -- presumably to help convince others to sell, and in the other thread be advertising a buy offer ... in which the rate offered is above spot market rates even).
2163  Other / Beginners & Help / Re: Unable to transfer wallet to new computer...or access it on my old! on: February 10, 2013, 12:14:22 AM
there was no wallet.dat on any of my bitcoin software anymore.

Windows hides by default the Application data directory so you won't see it unless unless you change the default settings for hidden directories and files.  You can still navigate to and access the directory though:

2164  Other / Beginners & Help / Re: Just lost 190 bitcoins through Mt. Gox on: February 09, 2013, 11:49:00 PM
So can you show me an example of someone that has used 2FA and has been rob?

It still requires secure computing.  If someone is sets up 2FA on a machine that has already been compromised or is compromised at a later time after setting up 2FA  (e.g., where the QR code that was scanned by Google Authenticator remains in the browser cache and is then obtained by an attacker) then there still could be a loss.

You also can't require 2FA cause not everyone has a smart phone, trust google, or can afford an yikuby key.

There is a javascript implementation so simply accessing from a second device (e.g., another laptop, for example) works without it being a mobile device:
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).

But with $40 mobiles and $80 tablets coming (or decent $100 no-contract smartphone mobiles and $150 tablets here now), there are more and more people already having a device that works adequately for 2FA.
2165  Economy / Economics / Re: should total valuation include coins not yet mined, ie just over half a billion? on: February 09, 2013, 10:41:13 PM
Since the minting of new coins is on a fixed schedule, would it make sense to count them all when doing a total valuation?

Time is the factor that matters.  Consider two years out, there will be 2.6 million more bitcoins issued than exist today, or about 25% more coins.  So it makes sense to discount the value two years from now by 25% to account for the currency inflation that will occur between now and then.  

So, if the total valuation is currently worth about $250 million USD, that means the market is valuing all bitcoins that will exist in two years at about $333 million USD (not including the carrying cost for those funds, so let's say $350 million).

Now is Bitcoin total valauation worth $350 million?

If Bitcoin only gaining traction for one tiny fraction of a giant market would cause it to have that valuation.   Online gaming is one of those such markets.   Remittance transfers is another.  

Over a year and a half ago, Rick Falkvinge described the level of potential and where it will likely occur:
2166  Other / Beginners & Help / Re: Made cash tansfer through zipzap and have not received bitcoins from bitinstant? on: February 09, 2013, 10:15:38 PM
any suggestions?? Huh Huh

Yup, post your inquiry in the BitInstant support thread instead:

Official BitInstant Support Thread (Active Customer Support)
2167  Other / Beginners & Help / Re: Looking to get into bitcoin on: February 09, 2013, 08:25:41 AM
I'd like to buy around .22 BTC with a prepaid credit card (that's about all I have left on it). Can I do this at an exchange like Bitcoin-24? I suppose I could just give someone the card details, too, but they'd have to trust me not to spend it.

About the only option available to you, where you pay with a prepaid debit card, would be VirWoX.  Buy SLLs and pay using the prepaid card.  Then convert those SLLs to BTCs on the SLL/BTC exchange.
2168  Economy / Speculation / Re: The bitcoin and amazon merger on: February 09, 2013, 08:17:50 AM
I wonder if bitcoin would help solve amazon's problem by making any such laws unenforceable?

Amazon voluntarily entered agreements with the states to collect state sales taxes.  Whether they accept for payment dollars or bananas (or bitcoins) wouldn't change the agreement they entered into.
2169  Bitcoin / Bitcoin Discussion / Re: ..... and .... a quarter billion dollars worth on: February 09, 2013, 04:56:43 AM
The value of the Bitcoin money supply exceeds $250,000,000 USD for the first time.

A quarter billion here, a quarter billion there, pretty soon you're talking real money.   Smiley

Now what I'm waiting on is for some merchant to credit Bitcoin for them having a really good quarter.  Dwolla was what I figured would be the first to do that but they've since distanced themselves from Bitcoin.  Maybe a ZipZap (a service BitInstant uses) or something like that.
2170  Bitcoin / Press / Re: 2013-02-06 - The Joule Standard on: February 08, 2013, 03:43:36 PM
I suppose if Bitcoin opens the floodgates for private currencies then this would be one of the alternatives that makes sense, but it is centralized and thus not in the same level as Bitcoin.

If these market based experiments prove successful, Joule denominated currencies could eventually augment or replace today’s fiat currencies. A metabolic currency has unique characteristics compared to specie (gold) and fiat money, specifically that its backing medium can be converted into energy to power machines. Another benefit of metabolic currencies is that they are defined in terms of a measurable physical property. Whether Joule based notes are issued by private banks or public treasuries, the quality of these securities can be evaluated by verifying the energy reserves backing them.

I'm not sure there's much difference between holding this currency versus holding shares of a WTI crude ETF, for example.
2171  Bitcoin / Press / 2013-02-06 - The Joule Standard on: February 08, 2013, 03:38:06 PM
The Joule Standard

A currency issued with backing (energy units).

During its early stages, this could be developed as an entirely private system, for example as the basis for an international payments network or as an alternate currency like Bitcoin. The conversion factors to translate Joules to and from various energy commodities are well known and can be independently verified. Private firms would issue notes denominated in Joules that are backed by corresponding amounts of energy commodities. These will be energy futures contracts, only denominated in metric units. Energy companies, commodities markets and technology entrepreneurs will be natural operators in this system. Most importantly, as projects like Bitcoin have demonstrated, this can be done by very small entrepreneurial companies in the early stages, allowing for rapid product development and innovation. There’s nothing stopping the person working on the next Paypal from doing this tomorrow.

2172  Other / Beginners & Help / Re: Just lost 190 bitcoins through Mt. Gox on: February 08, 2013, 03:02:35 PM
Maybe force 2FA for accounts with balances greater than 50 BTC.


Because there a lot of that going on.

MtGox account got cleared out

All BTC disappeared from my Mt. Gox account


And another: My mtgox account got compromised, what can I do?

Yet more: MT.Gox account hacked - lost 2k USD - MT.GOX will not explain how.

And more again: Bitcoins stolen from MtGox

And yet more: Stolen from Mt.Gox coins. Help return the coins.

Or more here: Email from Mt.Gox this morning.

And even more here: I just had $715 stolen out of my Mt. Gox account.

And the biggie: Bitcoinica MtGox account compromised

With more here: Unauthorized Account Activity on my Mt.Gox Account - Account Compromised/Hacked?

And even more: *MY* Mt Gox Account was Hacked - lost it all today... now what!?

Ditto: My MtGox account was just exploited - 3 BTC stolen

And now this one gets added to the list: Just lost 190 bitcoins through Mt. Gox

And on other services as well. Here same thing happened to some GLBSE users:

And elsewhere, in this instance:

And now on as well: Bitcoins stolen from

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:

If the exchange you are storing funds with doesn't provide OTP, consider using a different exchange:

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

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).
2173  Bitcoin / Technical Support / Re: Bitcoin-qt freezes? on: February 08, 2013, 02:10:32 PM
So after running a martingale bot which is surprisingly not run my dry yet, I have 1500 confirmed transactions, and 0 unconfirmed. This has made my bitcoin-qt client lag for some reason and I cannot click the buttons at the top which say Transactions, etc. I still can minimize it though. I've restarted it a few times and nothing has worked. Note: It is in server mode and it needs to stay this way.

Ya, I think your options are better hardware, a new (empty) wallet, or v0.8.
2174  Other / Beginners & Help / Re: NetSpend -> Moneygram -> Bitinstant on: February 08, 2013, 02:09:12 PM
3.  Go to Netspend website, log in and go to PayBills tab and click on ExpressPayment.  This allows you to send MoneyGram ExpressPayment Service online.

4.  Where it asks for Receive code just punch in 9611 for zipzap or whomever you want to pay.

That's pretty awesome. 

Where do you acquire a NetSpend card / account?
2175  Bitcoin / Meetups / Re: Colorado & Wyoming Front Range(Boulder, Fort Collins, Greeley, Denver, Cheyenne) on: February 08, 2013, 02:01:38 PM
Anyone out there using bitcoin?  Or wanting to learn about it?  I'm in Fort Collins and want to build a local, closed-loop bitcoin economy.  It'd be fun to meet up with any other users around here.


And in Denver:
bearbones (Developer of Coinapult):

I know I've seen others, just no way to look them up.

You could find others by listing buy and sell orders on LocalBitcoins:
2176  Bitcoin / Technical Support / Re: Rescanning with Mac/Terminal on: February 08, 2013, 01:03:11 PM
Does anyone know the syntax for the command to rescan the block chain using OSX?  I know its something along the lines of:

open -a bitcoin-qt -rescan

but everytime I try to execute it like above I get this long menu of options.

I'm not a Mac user, but it appears you would, from the command window, go to the data directory:

$ cd ~/Library/Application Support/Bitcoin/
$ ./bitcoin-qt -rescan

2177  Local / Marketplace (India) / Re: Mobile Recharges in India with bitcoins on: February 08, 2013, 12:53:55 PM
This website has logo of airtel as a telecom partner.Its says working in 112 countries.  Cool

And I've no idea how they are coming up with their BTC/USD exchange rate but the rate quoted at this very moment ($22.6244) is higher than the current rate at Mt. Gox, ($22.42), so that reflects a nearly 1% discount when paying with bitcoin, presumably.

I suppose what will matter is what USD/INR rate they use.  If it is along the same lines as the USD/INR forex cross rate, then bitcoins can be the cheapest way to "recharge" a mobile.

What will be great to see is people start offering to buy bitcoins sent as remittances alongside a mobile recharge business.  So the trader buys bitcoins from the remittance recipient, at a discount of perhaps five or ten percent and then spends those for customers through based on the current market rate.  As long as there is an easy way to immediately convert the bitcoins to INRs (which is what this BitcoinWireless is enabling), then such exchangers can operate without having to take on the risk of holding BTCs.
2178  Economy / Marketplace / Re: [Beta Testing] wireless time from over 300 carriers on: February 08, 2013, 12:05:39 PM
When is it launching?

It has been "soft launched" (meaning they don't have all the countries they plan to work in onboard yet, and there still are a few kinks being ironed out, but it is live and the general public is invited to give it a spin.):

2179  Bitcoin / Alternative clients / Re: MtGox Mobile Android Client Error "Method is disabled" on: February 08, 2013, 11:24:28 AM
I have bothered them some more and they do plan to release a new version but don't know yet when it will be ready.

Another method is to use from a mobile.  I think it knows if you are accessing from a mobile and get different results when from a desktop browser versus a mobile browser.  The URL for one-step scan (which they call "instapay") is:

 -   <--- where that XXXXX would be your EasyWallet identifier.
e.g.,   <--- Don't redeem to this EasyWallet as it now has been exposed to the public
2180  Other / Beginners & Help / Re: help with buying and selling of BTC on: February 06, 2013, 03:56:14 PM
I'm from Denmark and have a Danish mastercard so wich payment method should i use?

If you have a bank account:

Domestic DKK bank transfers (premium paid over Mt. Gox market price, but you wouldn't be paying any wire fees -- so if buying just a small amount, this might work well for you).

With a bank account and a larger purchase, SEPA transfers through BitSTAMP might be your best method.

With a credit card you can purchase Second Life Lindens (SLLs) through VirWoX.  Then you can trade those SLLs for BTCs on their SLL/BTC exchange:

With a credit card you can add funds (through LiqPay) at Bitcoin-24.

There might be other methods that work for you :
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