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1  Bitcoin / Project Development / Re: Bitcoin Price Image Generator on: December 12, 2013, 12:53:53 PM
Something's going wrong Sad Now the images aren't showing up.
Error: Mt Gox error

Yeah, it looks like the Mt Gox API was down for a bit. I'm thinking about switching to a different exchange, or maybe even making it an average of a few. Any suggestions of which one(s) I should use?

It would also be possible to let the user specify the exchange to use when generating the image.

Thoughts?
2  Economy / Securities / Re: FPGA Mining Contract on: November 17, 2013, 03:27:58 PM
We're still mining, but it's definitely getting close to the "not-worth-it" point. One issue is that each payment needs to be over 0.00005430 BTC for the client to send it, and with the shares spread out over so many people, the payment per account is tiny until it has been mining for months. I made a payment today almost 3 months since the last one and there will still some accounts that were under that limit. I had to manually remove those and will need to carry over the unpaid earnings for the next payment... an extra pain in the neck for me.

So, my plan at the moment is to just continue letting the FPGAs do their thing, and checking on the earnings occasionally. When it's enough for the majority of shareholders to receive a payment, I'll make one. I'll keep an eye on the difficulty/price ratio and not mine when the cost of power outweighs the earnings. At that point, we should discuss selling the boards off. Thoughts on that plan?

Today's payment txid: 986d9a5048e9b29ed4af96c3868f981955e645b9529c3ff93e511751480a91b0
3  Economy / Securities / Re: FPGA Mining Contract on: August 25, 2013, 08:38:14 PM
Payment time:

txid: 2487f5d874a344c4c77f3578634c6e659b52f18213f369e6b8d37a9b015dbab1
4  Bitcoin / Project Development / Re: Vanity address mining - How to pool work? on: July 14, 2013, 03:21:50 PM
I'm still happy to collaborate. just tell me what you need.

Sorry, I don't seem to be getting notifications from the forum these days, so I didn't see your reply. What kind of stuff would you be interested in helping with? Design? Backend? DB? The site is Python/Flask/MongoDB. The biggest thing to figure out right now is how to restructure the DB for pooled work. I have a basic idea down for using user accounts for requestors (each account maintaining a balance to pay PPS rewards, spread over all outstanding requests from a given user). Miners don't need accounts, but I'd like to copy the Eligius model to let a miner view some stats for a given payout address. I'd also like to get a nice API up.

Structuring the DB will be a task we would need to do together, but either of the other two things could be tasks you could mostly take on yourself. Interested?

Thanks!
5  Economy / Securities / Re: FPGA Mining Contract on: July 14, 2013, 03:12:37 PM
And, another payment:

txid: 05096425978646edb4adf6ff176eea2aa9dfd7defa18891fa77c93cc8e941af2
6  Bitcoin / Project Development / Re: Bitcoin Hardware Wallet [Last Updated: June 25th, 2013] on: July 08, 2013, 01:26:56 PM
Sexy.
7  Bitcoin / Project Development / Re: Vanity address mining - How to pool work? on: July 08, 2013, 01:21:42 PM
Just a minor plea: Please don't build more address generators that don't use compressed keys.  Compressed keys are faster to generate and uncompressed ones bloat the network.
Why would it be faster to generate?

... generating compressed vanity addresses is a bit faster since there is less data to hash each time you try one.

A side note, I am still working on this project, albeit slowly. If there is anyone that would like to collaborate on it, please let me know!
8  Economy / Securities / Re: FPGA Mining Contract on: June 02, 2013, 05:57:39 PM
Another payment!

159574c5c5919a15cea9c1e1aa860e2aca3f9706e05c7a2fa0c0e12e42c053f6
9  Bitcoin / Bitcoin Discussion / Re: I Think I Know Who Satoshi Is on: May 18, 2013, 11:30:31 PM


Why am I getting a weird vibe about this Satoshi hunt?

Mr. Ted Nelson reminds me of "Hadden" from Contact (1997). A cool and wise old intellectual.

So true! Whether or not Nelson is correct, I absolutely loved his presentation. Smiley
10  Economy / Computer hardware / Re: [WTS] Acer Aspire One Netbook w/ Broken Screen on: May 18, 2013, 11:01:40 PM
Sorry, I just looked on eBay to see what it would cost me to replace the screen on it. $50. With a new screen, and the 1.2BTC, I'm going to pass on this one. (I'm not trying to lowball you. I'm taking into consideration the cost of the screen, and the time and effort required to replace it. Ive done it before, and it's not pretty.)

EDIT: I'll put in a standing bid of 0.6BTC if you don't get any other offers and need to get rid of it. Standing bid good until May 25th.

Fair enough. I'll keep your bid in mind. I didn't think anyone would really want to replace the screen, but cool idea. Might consider doing it myself. Smiley

Anyone else?
11  Economy / Computer hardware / Re: [WTS] Acer Aspire One Netbook w/ Broken Screen on: May 18, 2013, 06:15:58 AM
Bump
12  Bitcoin / Development & Technical Discussion / Re: split key process on: May 15, 2013, 02:24:17 PM
you do not even need a protkey, thats just to protect the transfer

* create keypair (no specific target needed)
* provide public key in hex format (e.g. from ./keyconv -G)
* search difference / divisor for the target and your pubkey (e.g. -P option for vanitygen)
* after finding the needed privkey add / multiply it with your first privkey (e.g. -c option for keyconv)
* you got the vanity address

for more detail just read through https://vanitypool.appspot.com, also bitaddress.org is handy to do it if you used the pool.
if you have further questions after reading, point out your specific problem.

Unfortunately, you are talking a bit too tech savy for me in particular. I'm using oclvanitygen, rather than vanitygen. I do not see a keyconv file within these, nor am I familiar with it. I'm just looking for the method of solving a vanity address by using the split key that someone else provides.

For example I type:
Code:
oclvanitygen -d 0 -E [TheKeyThatTheyGiveMe] 1VanityWhateverTheyWantHere

And, when solved, it will give me a protkey. Do I simply give them that protkey and address and that's the end of it?

To be clear, this is not split-key generation. If you use the -E or -e option, you are just encrypting the address, but you still have full access to it, so this isn't secure for the other person.

As vv01f suggested, instead of -E, change that to -P (followed by their public key). You will provide to your friend the "PrivKey" that oclvanitygen will print out when finished. He or she can then use bitaddress.org to combine the two (their private key + this partial private key) to produce the final private key and address.
13  Bitcoin / Project Development / Re: Vanity address mining - How to pool work? on: May 14, 2013, 11:03:38 PM
I mined on it for a short bit the last few minutes, and it received the work alright.

Were you planning on pulling work from the other pools?

Thanks for testing!

I worry that proxying work from other pools could potentially get me in trouble. If the work is proxied, I will be receiving the full solution and, in theory, could swap the payout address for my own. The reason I worry about this is that the other pool operator could essentially frame me by doing this themselves if they see the solution came from my end. I would have no way to prove to the miner that I didn't do this. If there was some way to protect from this, I'd gladly do it but I don't see a solution at this point.

Anyway, the real goal is to get PPS working so that this is the first truly pooled vanity address site. Another thing on my wishlist is some client side javascript for the user to generate ECDSA keypairs and combine private key solutions.

I'm hoping to get all that worked out in the next few weeks. If anyone would like to contribute to the javascript part, I'd love to work out a partnership!

You would have to swap the payout address for your own, to distribute the PPS. Basically, your site would submit a getwork to the workboard, take those results and perform the modular multiplication on the provided Public addresses. Your miners see the work in their pull and get the tier 2 public key. Then, when they get a result, they send it to you. You recombine the tier 2 private key with the submitted key, verify the work, and pass that public/private key back to the original board with your address. That address gets payment, 0.5% is shunted out for the server and the rest distributed by the share scheme. Just post solved work on the site and be transparent. Easy as pie.

Ah, you're talking about proxying the work and turning it into PPS. This is an interesting idea, but would be extremely risky for me. I would have to pay for each share submitted, but could potentially never get paid myself. I could remove the risk by logging shares, then paying out proportionally instead of PPS. Either way, I think I'll save these ideas to possibly be implemented further down the line.
14  Bitcoin / Project Development / Re: Vanity address mining - How to pool work? on: May 14, 2013, 08:28:23 PM
I mined on it for a short bit the last few minutes, and it received the work alright.

Were you planning on pulling work from the other pools?

Thanks for testing!

I worry that proxying work from other pools could potentially get me in trouble. If the work is proxied, I will be receiving the full solution and, in theory, could swap the payout address for my own. The reason I worry about this is that the other pool operator could essentially frame me by doing this themselves if they see the solution came from my end. I would have no way to prove to the miner that I didn't do this. If there was some way to protect from this, I'd gladly do it but I don't see a solution at this point.

Anyway, the real goal is to get PPS working so that this is the first truly pooled vanity address site. Another thing on my wishlist is some client side javascript for the user to generate ECDSA keypairs and combine private key solutions.

I'm hoping to get all that worked out in the next few weeks. If anyone would like to contribute to the javascript part, I'd love to work out a partnership!
15  Economy / Computer hardware / Re: [WTS] Acer Aspire One Netbook w/ Broken Screen on: May 14, 2013, 08:21:23 PM
Seeing as I've had no offers, I'll reduce my asking price to 1.2 BTC. I'm not in a hurry to sell, just looking to get a fair price for this. Thanks!
16  Bitcoin / Project Development / Re: Vanity address mining - How to pool work? on: May 14, 2013, 04:57:43 PM
Thanks for everyone's thoughts on this. I really appreciate your help! It looks to me like PPS is the way to go, and I'm starting to figure out how to implement it. It will take some time.

If anyone's curious, the alpha version of the site is up. This is without PPS, so it's not too exciting for now. I'd appreciate any feedback, though. Thanks!

http://vanityamp.com
17  Bitcoin / Hardware / Re: Official Open Source FPGA Bitcoin Miner (Last Update: April 14th, 2013) on: May 13, 2013, 04:37:22 PM
There are a few tabs mixed in there. That should cause problems on some systems: lines 324, 331, 333, 334, 338. The 'bytes' issues are definitely due to using python3: http://docs.python.org/3.0/whatsnew/3.0.html#text-vs-data-instead-of-unicode-vs-8-bit

Should be easy enough to fix that up, though. Throw the code up on github and I'm sure someone will do it. Smiley
18  Bitcoin / Bitcoin Discussion / Re: First Bitcoin vault? on: May 13, 2013, 04:26:35 PM
Why would you go through all that trouble for security, but allow these people to have full access to your wallet? Buy your own engraver and bury the "wallet" in your backyard!

http://www.amazon.com/Dremel-290-01-Stroke-Engraver-Template/dp/B0000302YN
19  Economy / Computer hardware / Re: [WTS] Acer Aspire One Netbook w/ Broken Screen on: May 12, 2013, 05:08:49 PM
Bumpity
20  Bitcoin / Development & Technical Discussion / Re: Vanitygen: Vanity bitcoin address generator/miner [v0.22] on: May 12, 2013, 02:36:35 PM
Ok, what would be the string to type in to return a ltc vanity? Is there one?
use -X with the apropriate verison (given in hex)

So just use L in hex?

example in linux
Code:
./vanitygen -X 48 LTC


Just make sure pattern is valid

How did you come up with that number 48? I need to know so I can generate addresses for other alt coins. What is the 48 in reference to? I attempted those flags on Windows and it didn't work.

https://en.bitcoin.it/wiki/List_of_address_prefixes
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