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421  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.
422  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.

423  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.
424  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.....

425  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.
426  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.

427  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).
428  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.
429  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 […]

430  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.
431  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.
432  Alternate cryptocurrencies / Altcoin Discussion / Re: What would happen if ASIC on Scrypt chain? on: September 05, 2013, 05:15:01 PM
In technical terms, what would happen if someone with a bunch of ASIC miners pushed their machines onto a Scrypt chain?

Obviously, an ASIC for SHA256 mining cannot do Scrypt mining.   

So you are asking what would happen if an ASIC that does Scrypt were invented?

It probably depends on how the ASICs are put into play.  If they are intended to be units for sale to the public, then it might be something that would benefit the leading Scrypt-based alt.  If the units are intended to be used in a 51% attack, then it is lights out for whatever Scyrpt-based alt(S) they target.
433  Bitcoin / Press / Re: 2013-09-05 - Follow The Bitcoins: How We Got Busted Buying Drugs On S on: September 05, 2013, 03:42:59 PM
-1 for using the "busted buying drugs" in the headline.   Silk Road's E-Wallet can be used without placing any orders whatsoever so there simply being proof that funds were sent to Silk Road doesn't prove anything other than that you sent funds to Silk Road.  The researcher was not able to conclude that the funds had been used to purchase drugs.

Additionally, there was no bust.  Nobody was arrested nor was there any law enforcement involvement whatsoever.   So the title was a shameless attempt to drum up page views.
434  Bitcoin / Press / 2013-09-05 - Follow The Bitcoins: How We Got Busted Buying Drugs On S on: September 05, 2013, 03:37:00 PM
Follow The Bitcoins: How We Got Busted Buying Drugs On Silk Road's Black Market
by Andy Greenberg

With the data from just 344 of their own transactions, they were able to label the owners of more than a million Bitcoin addresses. And by making just four deposits and seven withdrawals into accounts held on Silk Road, Meiklejohn says the researchers identified 295,435 addresses as belonging to that drug market.
Once our bitcoins had been mixed up with other users’ bitcoins in the Silk Road’s 40 bitcoin account, it became impossible to track them further. So even though Meiklejohn could show that we had deposited bitcoins into a Silk Road account, she couldn’t see that those bitcoins were later paid to a drug dealer
435  Economy / Goods / Re: 2005 Dodge Ram 1500 SLT - Low Miles! Chicago area on: September 05, 2013, 02:37:09 AM
BTCBitcoin gladly accepted!

Would be nice if you put that into the listing.  There is a marketing concept known as touchpoints, which says that a typical person becomes aware of a brand after experiencing a certain number of "touchpoints".   So a person might see "bitcoin" for the first time in a Craigslist ad, or it might be their fourth time.   Either way ... even that little addition helps to build the Bitcoin brand.

436  Bitcoin / Legal / Re: List of court cases, complaints, regulatory actions, etc. on: September 05, 2013, 01:53:43 AM
Advisory Opinion Request to U.S. Federal Election Committee (FEC)
August 13, 2013
Location: Washington, DC, USA

Abstract: A Political Action Committee solicits the FEC's opinion on varios aspects of Bitcoin being accepted for political campain contributions.

CAF wishes to accept Bitcoins as monetary and in-kind contributions from individuals and organizations otherwise lawfully able to contribute. CAF also intends to sell, spend, and directly contribute these Bitcoins. These actions are similar to those permitted by other Advisoiy Opinions, including BARTERPAC and Cogswell, and the FEC should have no concern in pennitting them. So CAF can ensure compliance with FECA and FEC regulations, CAF seeks guidance on valuing, retaining, selling, spending, and contributing Bitcoins received as contributions.

Advisory Opinion Request of Conservative Action Fund PAC
 - (via browser-based PDF viewer)

Feds could allow Bitcoin campaign donations
437  Bitcoin / Bitcoin Discussion / Re: Hardware device and protocol for seeding and verifying Provably Fair gaming on: September 04, 2013, 11:37:31 PM
I didnt understand the bitzino example You gave. did  You mean that the bitzino verification is from a neutral source and cant be manipulated?

Yup.  two pieces of information (the hash they provide and then after that the seed my client provides) are known by me before each play.  Then after the game is played the secret is revealed.   It can be proven later that their secret [Edit: deck] didn't change as it should hash to the same value they provided prior to the game play.  

So then for shuffling the deck bitZino uses a few functions, sha256, MersenneTwister19937, and FisherYatesShuffle.

The pseudocode for it is at the bottom of this post:

So after the game is over I can verify that the results of the deck shuffle were not altered during play.  From there each game can be verified.  Each type of game has a unique challenge.  Even though I know how the cards were shuffled for blackjack, for instance, I would still need to track each play -- where did I stand or bust on the hand, did I split, etc.    So that part of the verification isn't necessarily generic.  The player's actions would need to be fed to a verifier that knows the rules of the game.

This technology won't be something the casinos would be anxious to develop.  So this would be an innovation rising from the bottom-up, pulled forward because it protects the player from a dishonest operator (or even an operator that is unaware of a bug or other situation causing players to not be paid out properly).
438  Bitcoin / Development & Technical Discussion / Re: A mistery hidden in the Genesis Block on: September 03, 2013, 11:07:17 PM
Satoshi did one more joke on us before fading away. Tomorrow, I will tell.

A new mystery about Satoshi hidden in the Bitcoin block-chain

by Sergio Demian Lerner,  ‏@SDLerner on Twitter.
439  Economy / Gambling / Re: Any good bitcoin slots? on: September 03, 2013, 09:46:18 PM
I see has slots now:
440  Bitcoin / Press / Re: 2013-09-03 No Banking, No Bitcoin on: September 03, 2013, 09:36:35 PM

Individuals are today selling bitcoins by accepting cash deposits (e.g., using through their bank account.  Some of them might be considered money transmitters by FinCEN, I suppose.   Will banks need to scrutinize every account that sees a cash deposit to try to figure out if the transaction was for a digital currency trade?
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