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381  Economy / Service Announcements / Re: | Instant Payments, Offchain API, Secure Wallet, 82000 BTC transferred on: September 09, 2013, 07:39:33 AM
When contacting support I would like to encrypt the contents so that only can see the contents of the message.

But I do not see a PGP (GPG) public key listed for

Is there a way to protect my privacy when contacting support?
382  Economy / Exchanges / Re: [ANN] KRAKEN.COM - Exchange Now Open with Live Trading EUR, BTC, LTC on: September 09, 2013, 05:47:32 AM
> In most US states, including California and New York, we offer no services.

I get the notice stating:
"Unfortunately, we cannot offer our services in your area at this time. " without actually sharing which U.S. state I am from.  

Was that decision made based on the IP address?  If so, that's not really accurate at the granularity of states.

Incidentally, ... nice work.   I mean really, ...  nice job!  Asking for my PGP (GPG) key so you can encrypt my e-mails?  Why isn't everyone doing that?   And two-factor.  Not just letting me configure it to require two-factor on withdrawals, but giving me the option to have a separate 2FA OTP for trading than the one I have for withdrawals.   Very impressive stuff!
383  Economy / Online Wallets / Re: - Bitcoin Block explorer & Currency Statistics on: September 08, 2013, 08:55:06 PM
I do like the ability to import a private key and have it sweep (spend) the funds, however the address it gets swept to is another existing address from my wallet.  This re-use of a previous address is not what I want, however I don't see any way I can force this sweep to create a new address for the sweep be spent to.

Is there some other way to import a private key and have it swept to a new address ... either via mobile , or My Wallet (web)?
384  Bitcoin / Development & Technical Discussion / Re: Checking balance of another address from daemon? on: September 08, 2013, 05:28:16 AM
I have tried getreceivedbyaddress and listreceivedbyaddress but they do not seem to work.

It can be done with the Raw Transactions API but not easily.  You'ld use listunspent to get a list of transactions and filter that for the address you are checking on.  [Update: See jgarzik's response below.]

if you weren't needing bitcoind specifically for this then know that other clients including BitcoinJ, Armory, etc., provide access to this info in a different way.
385  Economy / Economics / Re: How long do you think we have? on: September 08, 2013, 05:13:21 AM
I've just accidentally run into the counter again at Our current debt is ~1,84 trilion CZK (over 90 bilion USD). Budget for this year was 1,18 trilion. That means, probably next year the debt will rise to 2-year budget.

Of course, everything is fine here, nobody worries. I give it decade max, whaddaya think?

They'll hit some limit then just stop updating.

That's what the U.S. Treasury has done.  The national debt has been stuck at its $16.7T limit since the end of May.  Everyone knows the debt has been growing since, they just have taken "extraordinary" measures:
386  Bitcoin / Press / Re: 2013-09-03 No Banking, No Bitcoin on: September 07, 2013, 07:17:08 AM
Sure I'll give them my public key....after I generate 10,000 new ones in a second, and never use the registered one again.

Yup -- Bitcoin can be used in ways that are not impacted by AML regulations.  Just as can cash.
387  Economy / Service Announcements / Re: Convert bitcoin to cash for free with Bitcoin-Brokers on: September 07, 2013, 07:05:42 AM
What's different about this one?

With an exchange, all deposits are made to the same account number.

With Bitcoin-Brokers, cash is deposited directly into the seller's account.

The bank has no idea that the cash deposit transaction was Bitcoin-related, so it becomes much harder for them to prevent this activity without scrutinizing all cash deposits (e.g., asking for ID from the person making the deposit).   Of course, a large seller will have many cash deposit transactions and that alone might put them in the spotlight but the bank wouldn't necessarily know that the deposits were the result of a Bitcoin sale without doing much more investigative legwork.
388  Bitcoin / Mining support / Re: Can someone (probably a miner) please help? Transaction worth hundreds stuck! on: September 07, 2013, 06:58:18 AM
Didn't read the thread, but I think the only reasonable option you can do at this point is ask a pool operator to include the transaction in the next block they mine.

Or give it a little more time to confirm (which is what happened):
389  Bitcoin / Technical Support / Re: I accidentally the transaction fee, what do? on: September 06, 2013, 10:47:41 PM
It turned out that I forgot to include a transaction fee. I'm worried that my deposit address will change before I manage to get the 6 confirmations. How screwed am I?

Well, there's no reason it won't eventually confirm so now it is just a matter of transactions sitting ahead of yours getting included before yours will get in.

But there's no way to speed it up at all, nor any way to cancel it.

I'm worried that my deposit address will change before I manage to get the 6 confirmations.

If this is to Camp BX, the payment has already been sent so their new address expiration policy (which I strongly disagree with, personally) shouldn't be relevant. 

If instead this was a payment to a payment processor, they too show a countdown timer but that is met by the transaction getting broadcast and won't expire if confirmations don't occur in time.

390  Alternate cryptocurrencies / Altcoin Discussion / Re: Ripple starts to conquer the world from China on: September 06, 2013, 10:31:26 PM
Incidentally, there's going to be a Ripple Dev Con following the large emerging payments conference Money2020 (October 6-10, 2013), in Vegas.  The Dev Con is October 10th.
391  Bitcoin / Bitcoin Discussion / Re: Hardware device and protocol for seeding and verifying Provably Fair gaming on: September 06, 2013, 10:16:17 PM
please explain why Live Dealer is not "Provably Fair"?

Live dealer:

Provably fair with a live game would involve something like the decks of cards being shuffled (however you deem the shuffle to be considered fair), then on each card is printed a unique ID (e.g., serial number like 1 for the top card, 2 for the next, 3, ...etc)   then both sides of each card photographed, digitized and encrypted and the digital content given to you.

So before you place your bet you have evidence that allows you to later know the order of every card in the card shoe before the game.   After the game, you are given the passphrase used to decrypt and, if you know each action each player took, you can prove if the dealer cheated you.

392  Bitcoin / Bitcoin Discussion / Re: Meanwhile in Las Vegas..... on: September 06, 2013, 09:56:10 PM
A pretty large Bitcoin contingent will be at Money2020 in 2013.

What a difference a year makes.
393  Bitcoin / Bitcoin Discussion / Re: Money2020, October 6-10, 2013 - Speakers list filled with Bitcoin and Ripple on: September 06, 2013, 09:54:53 PM
I think the only Bitcoin names from the 2012 conference were  ....

BitInstant ... whose principals were there just one day because they had another big gig that same week, and David Birch.  

I don't know that Payward's Jesse Powell was a speaker, but his epic "Bitcoin pitch" at a dinner table one evening during it got written up in this article:

This article is too awesome... Bitcoin FTW at Money2020

Meanwhile in Las Vegas.....

394  Bitcoin / Bitcoin Discussion / Money2020, October 6-10, 2013 - Speakers list filled with Bitcoin and Ripple on: September 06, 2013, 09:49:42 PM
October 6-10, 2013 in Las Vegas will be Money2020 - 2013, a very large emerging payments conference in the U.S.

The speakers list shows Bitcoin will be present:

Patrick Murck, General Counsel, Bitcoin Foundation
Constance Choi, General Counsel, Payward
Megan Burton, CEO, CoinX
Fred Ehrsam, Co-Founder, Coinbase
Tony Gallippi, CEO, BitPay
Jered Kenna, CEO, Tradehill
Roger Ver, Founder, Representative, Blockchain  [Edit: see Roger's comment below]
Denis Kiselev, Founder & CEO, SnapSwap
Chris Larsen, CEO, OpenCoin
David Schwartz, Chief Cryptographer, Ripple
Stefan Thomas, CTO, Ripple
Bob Way, Integration Engineer, Ripple
Vinny Lingham, CEO, Gyft
Mike Vichich, CEO, Glyph  [Edit: Pfffft .... Oops, that speaker is from Glyph, not Gliph (]

Other speakers that have or had Bitcoin-related significance:
Brian Keller-Heikkila, CTO, ZipZap
Kristo Kaarmann, CEO, TransferWise
Brett Meyers, CEO, CurrencyFair
Ben Milne, CEO, Dwolla
Steve Streit, CEO, Green Dot
David Wolman, Contributing Editor, Wired
David Birch, Managing Director, Consult Hyperion


This will probably be the first time many in the financial, banking and payments industry will learn of Ripple (OpenCoin, SnapSwap -- a Bitcoin exchange and Ripple gateway).  A Ripple Dev Con will occur on the last day, October 10th:

If I missed any, feel free to add them in a reply.
395  Bitcoin / Bitcoin Discussion / Re: [ANN] Bitcoin Foundation Board Election Details Announced on: September 06, 2013, 06:05:22 PM
Just a reminder:

Voting in the election runs until 11:59 pm PDT, September 08, 2013.

A link that enables voting was sent to Bitcoin Foundation members via e-mail.

396  Economy / Goods / Re: grocery? on: September 06, 2013, 04:21:49 PM
I've previously inquired with, requesting that they take Bitcoin as payment.  Perhaps with enough inquiries they will add it.
 - has folded, and declared bankruptcy.

That's what happens when you compete in a low margin industry (grocery) but use a high cost payment network (Visa/Mastercard).
397  Bitcoin / Mining support / Re: Can someone (probably a miner) please help? Transaction worth hundreds stuck! on: September 06, 2013, 09:07:22 AM
Having $12 stuck unconfirmed is a lesson learned. But having $500 stuck forever?

It won't be stuck forever.

Firstly, the problem appears to be that the transaction had a parent transaction that had not yet confirmed.   And that parent too had a parent transaction that had not yet confirmed.  Those just confirmed a short while ago (about an hour ago).  So now your transaction is not dependent on any other transactions getting confirmed.

So the problem was you sent a payment before the funds for that payment had confirmed.     Bitcoin-Qt/bitcoind and many other clients don't let you shoot yourself like that.'s wallet doesn't care ... if you want to create a transaction that won't confirm right away, it will let you.  That's a feature experienced users want, but a problem for those like yourself who weren't aware of the underlying issue.

Anyway, there's not much you can do .. it will confirm when it confirmed, generally within a few hours or up to a day from here.

You can see the prior transaction using by going into the Advanced mode (click the link at the bottom of their page), and then click on the (spent) or (unspent) for each address in the INPUT.
398  Bitcoin / Press / 2013-09-03 - Bitcoin in India: Drivers and Barriers to Adopt on: September 06, 2013, 07:19:43 AM
Bitcoin in India: Drivers and Barriers to Adoption
by Jonathan Stacke

With talk of inflation and capital controls familiar to the bitcoin community, one might think Indian citizens would be jumping at the opportunity to adopt the digital currency, yet the hurdles to wide-scale bitcoin proliferation in India may be significant for the foreseeable future. While demand for gold has grown in India, the multiple applications it offers culturally and industrially in addition to acting as an alternative store of wealth may mean that such demand does not translate to bitcoin.
[A correlation exists] between bitcoin adoption and internet penetration in a given country. India, with just 12.6% of its citizens having internet access, has the sixth lowest internet penetration of the 100 largest countries. Despite that fact, the size of the total Indian population – more than 1.2 billion – makes India the third largest internet-using population in the world, with 150 million users, behind only China and the US.
It is possible to buy and sell bitcoin through a number of websites including and there does appear to be a healthy LocalBitcoins market.
Not to be overlooked is India’s mobile phone penetration of 71%, or approximately 900 million total users. […] only 44 million Indians are smartphone subscribers.
M-PESA, the mobile payment system that has changed the lives of millions in Kenya recently rolled out in India. […] If mobile payment systems like these gain traction in India as they have in Africa, acceptance of digital currency would prove to be a less significant hurdle.
India had the highest remittance volume in the world in 2011 with $58 billion, or 3.1% of GDP, according to the World Bank.
Forward-thinking companies like Buttercoin have recently stepped in to apply the potential of bitcoin to these markets […]
The Reserve Bank of India has stated that it does not immediately intend to regulate bitcoin, but their historic actions indicate that may change soon enough […]

399  Alternate cryptocurrencies / Altcoin Discussion / Re: How To Mine Scrypt Coins With ASIC or FPGA? on: September 05, 2013, 10:32:00 PM
From another thread:

Bitcoin is mostly hashing, so most of an ASIC would be SHA256 cores stamped out side by side on the chip.  Such cores are fairly compact.

I'm not a Litecoiner, but I believe they have it set to require 128KiB of memory per core.  That means you have to stamp out (core) (128KiB) (core) (128KiB) across the chip; therefore you get far fewer cores per chip.

The alternative is to have an ASIC with a memory bus to some external DRAM chips.  That makes the RAM cheap but you now have to get a much bigger ASIC for all the bus lines, and you still won't get very many cores on a chip before the RAM speed becomes a bottleneck.

Originally people thought the RAM requirement would prevent GPUs from being useful at all.  That was wrong, but I don't think they can escape the RAM bottleneck generally, so ASICs, like GPUs, will be limited mostly by the RAM you can attach.  That might change if someone can put together an inexpensive ASIC with RAM on die.  I don't expect that to happen faster than the rate GPU-mem-bandwidth-per-dollar increases, but you never know.

I do think LTC was too conservative with their memory size.  They were trying to keep it in L2 cache to keep it targeted at general purpose processors, but I think they would have done better requiring a few hundred megs per core.

tldr: If there ever is an ASIC for scrypt, it won't be one that gives a improvement two orders of magnitude over GPUs like SHA256 ASICs gave.
400  Economy / Service Announcements / Re: Bitcoin exchange affiliate program on: September 05, 2013, 05:44:20 PM
CaVirtex affiliates will earn 30% of net revenue from each customer they register in the customer’s first year of trading and 10% of net revenue in each succeeding year.

That's pretty incredible.   Imagine a bank sharing with its affiliates nearly a third of the ATM fees on every withdrawal, and a third of all debit card merchant fees for every purchase made by customers that the affiliate signed up or an account.
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