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501  Bitcoin / Development & Technical Discussion / Re: Cancelling unconfirmed transactions on: July 31, 2013, 07:39:14 AM
I know there are good reasons but to the casual observer and user it does seem that Bitcoin is a bit rough-and-ready if transactions can get "stuck" in cyberspace and the sender can't do anything about it.

There is different behavior based on the client.

With Bitcoin-Qt/bitcoind, the client (if left running) will sporadically attempt to re-broadcast the transaction indefinitely.   If the reason it doesn't end up in a block is because it is a low-priority transaction and a fee wasn't paid then there is no solution other than to perform wallet surgery (using a tool like jack jack's pywallet utility) to delete the unusable transaction.  

The hybrid E-Wallet from Blockchain.info behaves differently.  It will eventually stop retrying (in about a day) and the transaction removed from the wallet, allowing the user to try to spend the fund again.

I'm not familiar enough with Multibit, Electrum and other clients to know their behavior.

As far as the ability to bump an existing transaction there have been two approaches, ... "parent pays for child" and "replace by fee", however neither is targeted for inclusion in any specific upcoming release.
502  Bitcoin / Alternative clients / Re: Recovering Bitpak private keys in wallet.dat on: July 30, 2013, 09:23:45 PM
Yes, I'm referring to the iPhone client progam call Bitpak.

OK, that's a different client from the one I was thinking of (which was an Android app).

You might try to PM the author.  Here's a thread on it.
 - http://bitcointalk.org/index.php?topic=84669.0
503  Economy / Service Discussion / Re: Exchanges that support CurrencyFair or TransferWise? on: July 30, 2013, 09:10:40 PM
Long live CurrencyFair!

Doh!

Statement from CurrencyFair regarding them blocking transfers to Bitcoin exchanges
 - http://www.reddit.com/r/Bitcoin/comments/1jcjtm
504  Economy / Gambling / Re: bitZino - Bitcoin Casino - Blackjack, Roulette, 3 Card Poker, Slots and more! on: July 30, 2013, 08:46:28 PM
but if you can adjust the numbers, well we have a whole different ballgame.

And fortunately, BitZino is "provably fair" by providing a hash of every deck before each play so that it can later be determined that the numbers were not "adjusted".  
 - http://bitzino.com/about/fair
 - http://www.forbes.com/sites/jonmatonis/2012/08/31/bitzino-and-the-dawn-of-provably-fair-casino-gaming/

That is a feature you don't get in Vegas (yet), and not a feature provided even with all bitcoin-related online gambling. But with bitZino (and other "provably fair" gaming services), with every hand is the hash which will match the secret given after each play to ensure the sequence of cards in the deck was random (based on the seed provided by your browser) and did not change during play.
505  Bitcoin / Development & Technical Discussion / Re: Cancelling unconfirmed transactions on: July 29, 2013, 08:16:11 AM
Still, it took a good 45 minutes instead of the expected < 5 seconds to appear in the destination wallet.

That's normal (and desired) behavior.

If you want to force a re-broadcast to occur on-demand:
 - http://en.bitcoin.it/wiki/Raw_Transactions#Re-broadcast_a_transaction
506  Bitcoin / Alternative clients / Re: Recovering Bitpak private keys in wallet.dat on: July 29, 2013, 08:07:55 AM
I'm trying to figure out what happened to the private keys which were used by the older iPhone bitpak client.

Are you referring to the mobile app that had been named BitPay (unrelated to BitPay the payment processor)?  [Edit: Nope, BitPak for iOS not BitPay for Android]



If so, those never used private keys but instead connected to InstaWallet.

I think the app allowed a way to reveal the InstaWallet URL, but either way it is a moot point.  InstaWallet has closed its redemption period -- no new claims are being honored.  
507  Bitcoin / Development & Technical Discussion / Re: JavaScript Library to Sign Transaction on: July 29, 2013, 06:25:37 AM
|I have been looking at the Bitcoin-JS library and I don't think it has what I need.  Perhaps I am mistaken...?

The Javascript code from BrainWallet can be used to show how this can be done:
 - http://brainwallet.org/#tx
508  Other / Off-topic / Re: New "Dipjar" credit card tipping system is "absolute game changer" on: July 29, 2013, 05:38:00 AM
Once it arrives, the server staff can slap a QR code with a Bitcoin address on the side and whenever anyone goes to swipe, remind the tipper that if they send as Bitcoin the server staff receives 100% of the proceeds themselves, no intermediary.

Or a separate placard, with info:


 - http://www.reddit.com/r/Bitcoin/comments/1j8ktm
509  Economy / Service Discussion / Re: Is blockchain.info send-shared actually opensource? on: July 24, 2013, 08:03:36 PM
As stated in
https://blockchain.info/wallet/send-shared
it's open source

Blockchain.info might be referring to simply the license of the javascript from their MyWallet (web-based) application so that you are permitted to use that source, change it, etc.

They've never shared the source for their back-end.

510  Bitcoin / Bitcoin Discussion / Re: Do many of you contribute to the bitcoin wiki ? on: July 24, 2013, 09:11:47 AM
Does it still charge to do so?

There is an amount required as a custom anti-spam measure.  It is an amount of bitcoin worth like $1.

Perhaps if you ask here for sponsor for some edits that you plan to make, someone will agree to reimburse you for the BitcoinPayment fee after seeing those edits completed.
511  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: July 23, 2013, 06:32:24 PM
What would the be the chance these open outcry markets for Bitcoins happening (now in NYC (weekly), L.A. (monthly), San Diego (weekly), San Francisco (weekly), Miami (first one this week), Toronto (first one next week), Berlin (first one this week), and more likely to come) ... would bring an opportunity to expand into bullion and e-bullion sales as well?   (e.g., for DYM shares through Ripple trades, or for physical (e.g., Eagles) or for junk silver?).  Here are links to the individual events:
 - http://bitcointalk.org/index.php?topic=261116.msg2786471#msg2786471

Amagi Metals to Lose Bank Account
 - http://bitcoinmagazine.com/amagi-metals-to-lose-bank-account

Introducing Ripple Currency: DYM
 - http://bitcointalk.org/index.php?topic=149533.0

I see there was one bullion trade at a recent San Fran Buttonwood event:

Why the Only Real Way to Buy Bitcoins Is on the Streets
 - http://www.wired.com/wiredenterprise/2013/07/buttonwood
512  Bitcoin / Legal / Re: List of court cases, complaints, regulatory actions, etc. on: July 23, 2013, 05:40:08 PM
SEC v. Trendon T. Shavers, et al  
July 23, 2013
Location: Sherman, TX, USA

Abstract: 3.  In 2011 and 2012 Shavers, operating under the Internet name "pirateat40,", operated a classic Ponzi scheme raising more than 700,000 BTC in principal investments from BTCST investors.

 - http://www.sec.gov/litigation/complaints/2013/comp-pr2013-132.pdf  (PDF)
 - http://bit.ly/13awWVJ  <--  Browser-friendly (using a PDF viewer)

Separately, the SEC issued an alert on Ponzis:
 - https://www.sec.gov/servlet/Satellite/News/PressRelease/Detail/PressRelease/1370539730583#.Ue68AN__6b6
 - http://www.sec.gov/investor/alerts/ia_virtualcurrencies.pdf (PDF)
 - http://bit.ly/11c3IrP  <-- Browser-friendly (using a PDF viewer)


Press and other threads:
 - http://www.businessinsider.com/sec-charges-texas-man-with-running-bitcoin-ponzi-scheme-2013-7

2013-07-23 BI: SEC Charges Texas Man With Running Bitcoin Ponzi Scheme
 - http://bitcointalk.org/index.php?topic=261236.msg2788443#msg2788443

SEC finally charges pirateat40 aka Trendon Shavers
 - http://bitcointalk.org/index.php?topic=261234.0


This is being covered in the WSJ, on CNBC, and likely will reach most business news.
513  Bitcoin / Press / Re: 2013-07-23 Wired.com - Why the Only Real Way to Buy Bitcoins Is on the Streets on: July 23, 2013, 11:52:12 AM
There is the weekly (Monday) Satoshi Square meetup in NYC (yesterday's was hosted at EVR).
 - https://twitter.com/joshrossi  <-- For info on location
 - https://twitter.com/search?q=%23satoshisquare&src=hash

Here's the Project Buttonwood trading site for NYC:
 - http://buttonwood.btcshares.com/

The next L.A. Satoshi Square meetup is this Thursday (July 25th, 2013) downtown (Grand Park):
 - http://spelunk.in/2013/06/29/satoshi-square-la-july-edition/

The Buttonwood San Francisco occurs weekly.  The next event is Thursday, July 25th, 2013:
 - http://www.meetup.com/Buttonwood-SF-P2P-Cryptocurrency-Trading

The first Buttonwood-style event in Berlin will be July 29th:
 - https://www.facebook.com/events/495971010475226/

The first Miami Satoshi Square will be today (July 23rd, 2013):
 - http://www.reddit.com/r/Bitcoin/comments/1iu8l7/tomorrow_miamis_first_satoshi_square_at_bayside/

The first Toronto Satoshi Square will be next Monday, July 29th, 2013:
 - http://www.reddit.com/r/Bitcoin/comments/1iudha/reminder_toronto_satoshi_square_next_monday

There is a weekly trading event, "Talk 'N Trade" in San Diego (Tuesdays):
 - http://www.meetup.com/Bitcoin-Traders-of-San-Diego

[Update: And now also Singapore:

Singapore's 1st Buttonwood - meetup event Aug 1
 - http://bitcointalk.org/index.php?topic=264180

 - http://www.meetup.com/BitcoinSingapore ]

[Update 2: And Panama:

https://twitter.com/satoshi_square/status/384811183657582592 ]

[Update 3: Reportedly these have occurred in Helsinki, Finland and Winnipeg, ON, Canada also.   Please share the link if anyone knows of these or any others I've missed.]
514  Bitcoin / Press / 2013-07-23 Wired.com - Why the Only Real Way to Buy Bitcoins Is on the Streets on: July 23, 2013, 11:32:33 AM
Why the Only Real Way to Buy Bitcoins Is on the Streets
by Robert McMillan

Quote
Welcome to the quickest, most private way to buy the internet’s most successful digital currency: in-person and face-to-face.
-
Buttonwood meetups started in New York a few months ago and fanned out to San Francisco and Los Angeles. Buttonwood is an allusion to the May 17, 1792 agreement, struck under a buttonwood tree at 68 Wall Street, that set down the rules for what became the New York Stock Exchange.
-
After some haggling, Light types Copley’s Bitcoin address into his mobile phone and transfers just over half a Bitcoin ($50) to Copley’s digital wallet [for payment of silver bullion].
-
He used to buy and sell on a (temporarily shuttered) marketplace called Bitinstant. But a few months ago, 'it started to ask for too much of my information,' the student says. Given the nature of his business, he wants to buy Bitcoins without being tracked.
-
These are the kinds of deals that have regulators worried.
-
It’s traditionally been tough to quickly buy Bitcoins with U.S. dollars, and recently it’s become tougher.  [...] That [regulation has] led to a pretty healthy off-the-books market for Bitcoin traders. [...] Buyers and sellers can also hook up over Internet Relay Chat at #bitcoin-otc
-
Buyer’s Best Friend will give you Bitcoins back for cash, much like you can get cash back from a credit card, but you are supposed to purchase something first.
-
Though trading an obscure crypto currency may sound very modern, the whole transaction has a decidedly old-fashioned and human flavor to it.

 - http://www.wired.com/wiredenterprise/2013/07/buttonwood
515  Economy / Trading Discussion / Re: Interesting conversation with a retailer who formerly accepted Bitcoin on: July 23, 2013, 04:47:33 AM
we are back in business accepting coin!

Any chance you'll be adding that capability for your visitors to your store as well?   I had pointed a Bitcoiner who was traveling through Albuquerque to stop in, but Bitcoin wasn't accepted for payment:
 - http://www.reddit.com/r/Bitcoin/comments/1ig126/im_working_in_santa_fe_nm_this_week_and_would_be/cb5d9wz
516  Bitcoin / Bitcoin Discussion / Re: Why we need bitcoin. on: July 21, 2013, 11:18:21 AM
Bitcoin is a push not pull technology. Things like this could not happen.
http://m.nypost.com/p/news/local/pedi_theft_app_1nPJXvFAES86ygLyxsb6cM

An entire article on Push-based bank technology and not a peep about Bitcoin:
 - http://paymentsviews.com/2013/03/13/faster-better-cheaper-like-it-or-not
517  Bitcoin / Bitcoin Discussion / Re: List of all Bitcoin conferences around the world on: July 21, 2013, 09:50:54 AM
This isn't an event that isn't shown widely:
 
Wednesday August 14, 2013 from 8:00 AM to 7:00 PM EDT

Where:
The New York City Bar Association
42 West 44th Street
New York City, NY 10036

https://events.r20.constantcontact.com/register/eventReg?oeidk=a07e7r6y66d6e1c28c1&oseq=&c=&ch=


Virtual Currencies Compliance Conference (VC3)
 - http://bitcointalk.org/index.php?topic=257918.0
518  Bitcoin / Bitcoin Discussion / Re: Inheriting bitcoins on: July 21, 2013, 08:42:56 AM
Eg if you give the paper wallet to a lawyer, to pass on, how can you stop them spending it....and they just run off.

The key can be split into multiple parts, so the family receives one part and the trustee/attorney another:

pybtcsplit - m-of-n Private Key Splitting made easy in one simple python utility
 - http://bitcointalk.org/index.php?topic=104086.0

What many are waiting anxiously for is the inclusion of encrypted paper wallets.   So the trustee/attorney gets the decryption password and the family receives the encrypted paper wallets:

From another thread:

So the encrypted paper wallet(s) go to family members.  DeadMansSwitch gets the decryption key, as does the trustee.  From another thread:

I changed the colour to blue for encrypted paper wallets to provide distinction between encrypted/unencrypted paper wallets - a version in the original yellow is included in case you really like yellow, just delete 'note_encrypted.png' and rename 'note_yellow.png' in its place.



This solution (encrypted paper wallets) probably isn't ready for prime time, but give it a few weeks and that will probably become a very good method for offline / long term savings that is secure.


And apparently a commercial paper wallet product (based on an open source tool) is now available with this:

now in beta as part of OpenPaperWallet (and the retail kit, SafePaperWallet) -

BIP0038 compliant, encrypted private keys in QR codes.

Software v3 BETA

The new v3 offers many features:

- A step-by-step wizard
- Multiple background design options
- Encrypted private keys (BIP0038) and in-browser decryption.
- Deterministic Aliases

https://safepaperwallet.com/software-v3-beta/
519  Economy / Service Announcements / Re: [ANN] LocalBitcoins.com - a location-based bitcoin to cash marketplace on: July 19, 2013, 12:15:07 AM
I noticed 2 of the bills were fake! Now since I didn't check during the transaction I can't prove whether or not the buyer was complicit and had any knowledge of these fake bills

Here's a guide:

U.S. Secret Service Know Your Money
 - http://www.secretservice.gov/know_your_money.shtml

Counterfeit Bills A Risk For Local Bitcoin Trading
 - http://bitcoinmoney.com/post/36244271879

520  Economy / Trading Discussion / Re: Tips for local transactions on: July 19, 2013, 12:07:05 AM
Just a reminder on the importance of checking for counterfeits.   A cashier at the convenience store knows what to look for and is vigilant with every bill.  Bitcoin traders don't generally have those skills and aren't disciplined enough to consider the possibility that the cash they are receiving could include fake bills being passed to them (i.e., we are green and thus make good targets for counterfeitters).

From another thread:

Afterwards we concluded the trade and I went on my way. However shortly thereafter I noticed 2 of the bills were fake! Now since I didn't check during the transaction I can't prove whether or not the buyer was complicit and had any knowledge of these fake bills but I have learned my lesson and will be investigating bills more closely. They arn't too shabby I definitely could pass them off if I wanted to (though I won't cause I don't wanna screw someone else over) but a simple 30 second investigation would've aroused my suspicions as they both have the same serial and feel slightly different.
DON't MAKE THE MISTAKE I DID CHECK THE BILLS BEFORE RELEASING ESCROW.

There are some tips on detecting counterfeits here:

Counterfeit Bills A Risk For Local Bitcoin Trading
 - http://bitcoinmoney.com/post/36244271879
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