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2161  Bitcoin / Project Development / Re: ad-hoc cash-dispensing network app with GPS on: February 05, 2013, 01:36:25 AM
How about making this for bitcoin?

Related (from another thread):

Looking forward to the LocalBitcoins mobile app.

A few months ago was a StartupBus competition, and one of the contestants was Open Wallet app:

Here's their proof of concept video:


I have no idea what they were going to use to settle payment to the party acting as "ATM".  I wouldn't doubt they had no good solution ... and left it as "and magic happens here", after figuring out that PayPal wouldn't work for this.

If that was the hurdle these entrepreneurs couldn't solve, then had they considered using bitcoin as the settlement currency they might have been able to get funding, develop it and launch.

Well, ... will LocalBitcoins take it further?
2162  Economy / Speculation / Re: A more in-depth BTC/USD analysis... on: February 05, 2013, 12:48:55 AM
Personally, I'm planning to buy a large amount of BTC right away. But I'm actually going to transfer it all to my new MtGox and exchange accounts to sell and hold in the form of fiat,

I'm a little confused why you'ld do that.  Doesn't that cause you to incur exchange fees three times?  Buying, selling and then eventual re-buy?  Why not transfer fiat and just pay exchange fees once?
2163  Bitcoin / Technical Support / Re: .14 BTC transaction fee? on: February 04, 2013, 07:41:09 PM
Is this ammount of a fee normal for this ammount?
The trx fee computation considers the age of the coins (if you recently received them, like in the past day) and the size of the transaction ( where many small inputs are worth less to spend than the amount of fees they require when trying to spend.)

One approach might be to send just a lower amount and let the rest "age" for a day or so if that is the cause it will diminish on its own.  The other approach us to import keys to a client that allows yoy to send trxs without paying any fee. being one of those.

Regardless, make sure you back up your wallet.dat.  
2164  Other / Beginners & Help / Re: Questions about The White Papers on: February 04, 2013, 04:09:13 AM
What's the algorithm the hash uses and how was this determined?

A bitcoin address is a derivative of a hash of a private key.

A Bitcoin address is a 160-bit hash of the public portion of a public/private ECDSA keypair.


A transaction requires cryptographic signature(s) made using the private key(s) of the input addresses:


A block includes a reference to a prior block and includes zero or more transactions that have occurred since that prior block:

2165  Other / Meta / Re: Upcoming downtime on: February 04, 2013, 03:03:54 AM
From another thread:

2013-02-02 Page views number wrong?
Seems way off as other recent days are closer to 400k.
2166  Other / Meta / Re: 2013-02-02 Page views number wrong? on: February 04, 2013, 03:02:01 AM
Seems way off as other recent days are closer to 400k.

The webserver is now nginx instead of Apache.  I wonder if there are pageviews that don't hit the database and thus aren't being computed.[/quote]

Is there a way to know the real number, or if that is the real number what is the explanation. If it is wrong can it be corrected?

Really messes up the chart correlating the exchange rate compared to forum activity, eh?
2167  Bitcoin / Mining / Re: Butterfly labs single SC on: February 04, 2013, 02:47:04 AM
how many bitcoins in total do you think it will generate? if you had to guess.

A guess is all that it would be because we don't know the future difficulty levels.  Future difficulty levels are dependent on cost and availability of ASIC hardware, as well as the future exchange rates.
2168  Economy / Economics / Re: Which country will be the first to use gold? on: February 04, 2013, 02:28:24 AM
1 India, since gold is already widely distributed amongst the population.

Also interesting are these plans from the RBI (India's central bank):

It wants banks to encourage products linked to accepting physical gold as deposits and investing public money in gold related products, and extend loans against gold as collateral.

Indians own about 20,000 tonnes of gold, or three times the holdings of the U.S. Federal Reserve, in jewellery, bars and coins.
2169  Other / Beginners & Help / Re: Hi, anyone do this? on: February 04, 2013, 02:01:26 AM
I need to aqquire 13.5 bit coins

You might find a local trader who can help you.

2170  Economy / Economics / Re: Which country will be the first to use gold? on: February 04, 2013, 01:56:56 AM
Which country would use gold

From another thread:

It took decades but finally the government of Kelantan (a state in Malaysia - They have a federal system like the USA) last year listened and introduced Gold and Silver currency which is legal tender in that state. They are even paying civil servants using it.

Another Malaysian state (Perak) has now introduced its own Gold Dinar and Silver Dirham coins. Kelantan was first, in August of 2010.
2171  Other / Beginners & Help / Re: A new notation for Bitcoin? on: February 03, 2013, 06:53:49 AM
In place of VIRES IN NUMERIS, they'd say 0.01 BITCOIN.[...[

I'd just make them available as roll-your-owns, with the spot on the back for a private key).

The only thing stopping me is

I'ld be more concerned about being the "issuer" of a coin marked 0.01 BTC  (where 0.01 BTC is worth about twenty cents today) which is [potentially going to be] floating around without any 0.01 BTCs on it.
2172  Economy / Web Wallets / Re: - Bitcoin Block explorer & Currency Statistics on: February 03, 2013, 06:00:51 AM
[When I try to send, I get the message: "Insufficient funds. Value needed XXX BTC. Available amount xxx BTC

Just out of curiosity, have you tried using the transaction type "Custom" instead of "Quick Send"?  That way you can select which inputs are used and you can even set the fee to 0 (or whatever value you wish).    That might help to resolve your issue.
2173  Economy / Trading Discussion / Re: So how on earth am I supposed to get bitcoins in the UK? on: February 03, 2013, 05:58:13 AM
They dont sell moneypaks in UK?

No, they don't.  MoneyPak is a product for U.S. only, however in the UK is a similar product, UKash.  A UKash can be used to buy SLLs (which can be traded for BTCs) at VirWoX, or UKash can be used at, Bitcoin Nordic, and more.  The fees aren't trivial but this is one way to pay with cash, with no bank system intermediary.

2174  Economy / Currency exchange / Re: Quick bitcoin purchase on: February 03, 2013, 04:03:15 AM
Are there any websites that allow you to purchase bitcoins with credit/debit cards that send the BTC the exact same day, preferably soon after purchase?

They are frequently "out of stock", but if you monitor their forum thread you can learn when they've restocked.

If there is anyone else that would be willing to sell 2 BTC for $40 via PayPal, I'll be glad to purchase ASAP.

VirWoX accepts PayPal for the purchase of Second Life Lindens (SLLs).  You can then trade those SLLs on their exchange for BTCs:
2175  Alternate cryptocurrencies / Altcoin Discussion / Re: OTC Market for Altcoins? on: February 03, 2013, 03:29:03 AM
Just to test some waters here, do we think there is a market for peer-to-peer trading like bitcoin-otc ( I checked their website but there is no altcoins in the 'otherthing' column, which presumably supports quite a number of currency units.

When I enter a buy order for bitcoin, paying 2% premium I might enter it as:

 ;;buy 1.0 BTC at "{mtgoxlast} * 1.02" USD "Can pay with PayPal, Dwolla, Serve, etc."

So there is no restriction against any other currency.  I could today enter an order to pay for litecoin with bitcoin.  The order I enter for that is:

 ;;buy 300 LTC at 1.0 BTC

or vice-versa:

 ;;buy 1.0 BTC at 300 LTC

What I'm suspecting is that you are looking for a dynamic price method, just like how "{mtgoxlast} * 1.02" will dynamically calculate the price based on "market" price.  To provide that, the Gribble bot would need to be modified to become aware of the alt-coin exchanges.  I'm not even sure how you would determine "market price", since unlike bitcoin there isn't one dominant marketplace for each alt coin, as far as I know.  You could make an appeal to get at least some exchange quotes for some alts added to gribble.   Or you could make your own bot (using the open source gribble code) and have a separate OTC channel.
2176  Economy / Trading Discussion / Re: Is there any client-side program of bitcoin exchange transaction? on: February 03, 2013, 02:57:25 AM
I'm not sure what you are asking.  Can you explain?
I mean a program which I can download from somewhere and installed it on my computer, then I can see from it everything related with buying and selling of bitcoins anytime on the Mt.Gox, for example...

Here's something maybe like what you are looking for.

New MtGox trading client for Windows available - BTC-Trader at

Of course, giving any piece of software access to your trading account or wallet is a risk to consider.
2177  Economy / Trading Discussion / Re: Is there any client-side program of bitcoin exchange transaction? on: February 03, 2013, 02:50:56 AM
Hi, everybody, what I want to know is that if there is any client-side program of bitcoin exchange transaction, just like those of the stocks?

Is this the forum equivalent of this reddit post?

Live trading platforms that use Bitcoin?
2178  Bitcoin / Bitcoin Discussion / Re: multiple transactions in a block on: February 03, 2013, 01:51:23 AM
Am I right in thinking that a bitcoin can only be used ONCE per block ?


Both the parent and child transactions can be included in the same block.  I'm using the term "child" to refer to one which uses an output of a "parent" transaction which also has not yet been included in any prior block.

If I remember correctly, the client will arrange transactions in the block so that parent's transaction occurs first and child transaction(s) occur later in the block.   I am unsure if a block that has the order reversed would have any problem getting accepted by other nodes if that isn't the case.
2179  Economy / Economics / Re: Capital Gains & Other Income on: February 03, 2013, 01:17:34 AM
So how should I deal with taxes if I did buy them on an exchange and the spent them after they gained value?

[In the U.S] currency gains of $200 or less that arise from personal transactions (not for investment or business) are not taxable.  Any currency gains in excess of $200 per transaction (per trip or per purchase) are treated as a capital gain.

Bitcoin isn't recognized as a foreign currency so there might be many arguments about how it would be treated for tax purposes, with varying methods based on tax jurisdiction.

Here's more info:

Staying Between the Lines: A Survey of U.S. Income Taxation and its Ramifications on Cryptocurrencies
2180  Other / Beginners & Help / Re: Constantly paranoid on: February 02, 2013, 09:48:06 AM
How can I create paper wallets when offline? I tried to access the site, but it won't load, because I'm not connected to the interenet

The .html from BitAddress contains all the javascript, images, css, etc., so all you need to do is View Source -> Save As (or whatever method your browser uses to save a copy of the .html to disk) and store it to a flash drive. 

Then when you boot to an offline LIveOS, just open the .html from the flash drive. 

If you are using a Linux-based LiveOS, you can probably do a sha1sum and it should be identical to the sha1sum the latest (to verify that the version on the thumb drive matches the one served by BitAddress):
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