Hi

I'm trying to use the new "married wallet" feature that was introduced in bitcoinj 0.13. I understand the concept, but I don't understand how to create the spending transaction, or to be more specific, how to implement the TransactionSigner#signInputs method. Do I need to "manually" create the scriptSig for each input, and then add them to the propTx.partialTx? Or is there a more high level approach to do this?

Any help is greatly appreciated. In fact, I will donate a beer ($5) to anyone who provides an example implementation of TransactionSigner for married wallets, similar to the example implementation of payment channels, which is really helpful. If the example is well done, perhaps Mike could merge it in the bitcoinj-examples project, I think this would help a lot for anyone using this feature in the future.

EDIT: I posted this in the bitcoinJ mailing list: https://groups.google.com/forum/#!topic/bitcoinj/hJyvxQWJdkQ

Is there a library that supports this?

Let's say I wanted to implement this payment protocol, do I have to "manually" construct the hash value from the unsigned transaction, and later "manually" putting together the transaction that includes Bob2's signature?

And one more question: Does BitcoinJ follow the protocol described above, or is BitcoinJ still prone to transaction malleability?

Any help is greatly appreciated, I'm working on a payment channel implementation for my bachelor thesis

Hi

I'm selling my miners:

BFL Single, average Hashrate = 55GHs/s => min. price 13 BTC

AVALON Batch #2, average Hashrate = 70GHs/s => min. price 15 BTC

The miners will go to the highest bidder (if there is any). Both devices are in hand, ready to deliver or pick up in Zurich, Switzerland. The highest bidder can chose how the device(s) shall be delivered, but has to pay for the shipment himself.

Hi,

I'm having trouble getting access to Kraken's private API. I don't understand how to create the API signature. If somebody could post an example, if possible in Python, I'd be very grateful.

This is the description on their website on how to create the signature:

ouch. I should go to bed.

I tried signing up for mcxnow. I feel extremely dumb for asking this but...

What is the answer to the security question to sign up? ("Type next letter in series: qwert"). I guessed "yuiop", but doesn't work.

(One wonders why they have a security question at all if they only have one single question)

Yeah I just figured this out, thanks to the folks on #bitcoin-dev

Btw there's a tool to make this really easy: https://github.com/CodeShark/CoinClasses
And here's how to use it: http://pastebin.com/W0zCLB6i

He wasn't asking how to create the multi-sig address, but how to create the scriptPubKey and redeemScript.

I've tried to follow Gavin's script to create a multi-sig address and spend the coins I sent to it, but I can't figure out how to create a transaction. Signing the raw transaction doesn't work for some reason. If someone could look at this and tell me what I did wrong, I'd be extremely grateful: http://pastebin.com/gkqF2Lh8 . Feel free to "steal" the 0.0095 BTC as long as you explain me how you created the transaction and what I did wrong.

Just got a tracking number for my order #2717. Order was placed on February 18th. Yay!

r4vTLr2BUe6eJCmvJsybQFkC2ihet3aQum

How does AVALON usually give updates? Is there a blog or something where they publish news? Would be nice to hear from them today, after all today is the day they are supposed to ship.

In case some of you are still suspect that I am a scammer, I created another screenshot from the AVALON ASIC store:

http://i.imgur.com/gcmsAWj.png

Then I will contact the second highest bidder. If you can't proof me that you have enough coins the moment the auction ends, I will also contact the second highest bidder. The reason for this is that if you speculate that the bitcoin price will rise, and only then have enough money to purchase the device, it's a definite loss for me:

1. Price goes up: I'm giving the device away for too little money -> Buyer wins, seller loses
2. Price goes down: I'm selling the device for more than it may be worth -> Seller wins, buyer loses

So as I said, if the price goes down, and you can't pay me, it's a definite loss for me.

You can pay with bitcoin, no problem. Only condition is that you wait and maybe have a coffee with me until there are at least 3 confirmations

Yeah, somebody copied my order confirmation, and created a listing on ebay. I have proof that my order is the original: http://i.imgur.com/NkXLAc5.png . Especially the blue edge in the email field proofs that my order confirmation is the original.

I will cancel the deal if the device hasn't arrived within 30 days after Monday. If you decide to pick the device up and pay cash, you didn't lose anything. If you paid with paypal, you can charge back (or I will send the money back, whatever is less of a hassle). Ebay requires that if you sell a preorder, the item has to be sent within 30 days. So if you don't believe me that I'll let you charge back, or give you back the money, ebay will be totally on your side.

What do you mean?

Hi,

I'm selling my AVALON ASIC preorder of batch #2. The auction ends on Sunday. According to AVALON it should ship on Monday. Before calling me a scammer, please watch my proof video that I actually purchased the device. If you need any other proof to convince you that I'm not a scammer, please let me know. Here's the video: http://www.youtube.com/watch?v=xZh_DNXJFFc

And here's the ebay auction: http://www.ebay.com/itm/AVALON-ASIC-Bitcoin-BTC-Miner-Preorder-batch-2-60-GHash-s-/261198209710?pt=LH_DefaultDomain_0&hash=item3cd0a062ae

I will only accept PayPal (or cash, if you chose to pick the device up here in Switzerland), so that the buyer can reverse the payment if he feels like I'm a scammer. I will also give all my personal information to the highest bidder (copy of passport, address, phone number, etc). I love bitcoin, and I hate scammers as much as you do.

In case you are asking yourself why the heck I'm selling this thing:

• I'm a formerly poor (not "living on the street"-poor, more like "not having any money left at the end of the month"-poor) student that has made a lot of money with bitcoins. So much that about 97% of my wealth is now in bitcoins. I'm starting to get nervous, and I need to diversify my assets.
• Honestly I have no idea where I would leave the miner running. I have a tiny apartment, and this thing is probably loud as hell. My friends' and familiy's appartments are either also too small, or their internet connection is not reliable enough.
  

Before you ask me any questions please check the FAQs in the ebay item description. If you have any more questions, feel free to ask.

I know some of you are going to say "this seems fishy" or "don't do it, these ebay auctions are always scams" or similar. If you do, please explain why you think so, and I will try to proof that you are wrong.

One more thing: I realize I only have very few posts on bitcointalk, I also don't have an otc account. The only internet account that may give me some credibility is my reddit account: http://www.reddit.com/user/omnibrain/ . I also have a localbitcoins account, but unfortunately only one review.

Thanks for reading!

I'm not sure you are right. The later I'm selling the device, the less value it has. My thinking was that people would pay more if they can get the device as early as possible. And if the auction would only be for 1 day, a lot less people will see it, than if it is for 5 days.
And did you watch my proof video that I purchased the device? http://www.youtube.com/watch?v=xZh_DNXJFFc . You have to admit that this would be extremely difficult if not impossible to fake. Also I decided to only accept PayPal, so if you don't receive the device within 30 days, you can charge back. If the buyer has any other reasonable way to handle the transaction, I'm very open to suggestions. I'm really not trying to scam anyone, and I'm trying everything to make that clear. I'm also willing to give all my personal information to the highest bidder (Phone number, copy of my passport, address, anything).

Really? You will pay 300'000$? If you promise that, I will cancel the auction and hold it for you when it arrives

I had to re-lsit the item, here's the new link: http://www.ebay.com/itm/AVALON-ASIC-Bitcoin-BTC-Miner-Preorder-batch-2-60-GHash-s-/261198209710?pt=LH_DefaultDomain_0&hash=item3cd0a062ae

There was a technical problem with ebay, I couldn't re-add the images, and I couldn't edit the description. I was on the phone with ebay.com for about 30 minutes, and then they told me that this problem could not be fixed, and I'd have to re-list the item. Extremely annoying. I also had to talk to the american support, because I created the listing on ebay.com, and not ebay.ch. Ebay is a horrible website...

So now there's a new offer: http://www.ebay.com/itm/AVALON-ASIC-Bitcoin-BTC-Miner-Preorder-batch-2-60-GHash-s-/261198209710?pt=LH_DefaultDomain_0&hash=item3cd0a062ae

 It's also risky for the seller. But I'm sure we can find a solution.

According to avalon the device should ship on monday. As far as I know they have been quite reliable, so I hope the 30 days will work.