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21  Other / Meta / kentrolla's "lol broken bot" thread deleted? on: August 16, 2012, 10:10:32 AM
This thread was in speculation just a few minutes ago. I had posted in it. Now it is gone without a trace. Why? Who did this?

I said this a long time ago, when moderation was first being done in this forum: deletions are not cool. There has to be a trail of moderator activity for all to see.
22  Bitcoin / Bitcoin Discussion / Automated arbitration agents on: July 20, 2012, 08:33:31 AM

I was discussing gambling and Bitcoin with a colleague, and it occurred to us there's a need for computerized arbitration. What I mean is, currently, to place a bet, you have to either just trust whoever you're betting against, or use a third party as escrow. Obviously this is a problem for people other than gamblers as well.

What if you could have a truly neutral third party? A non-human one?

I'll try to outline what I had in mind. I'm not that IT-savvy, so there are glaring errors in this idea. Which is why I'm posting here.

The program is written. The source is released into the wild, and anyone can compile it[1]. On compilation, the program creates a set of encryption keys not known to any person. [2] It is then run, and provided CPU time and possibly seeded with some funds to let it purchase more elsewhere. A protocol would be needed to let the program negotiate for CPU cycles among different servers. The program propagates and distributes its functions redundantly among these servers.[3] Redundancy implies the program does not trust any single server operator, and will perform any computation performed on one server on several others in order to guard against tampering. Tasks are performed at the lowest logical level possible and distributed among varied servers to make analysis of the actual commands being run harder.

The program begins to advertise itself, saying it is willing to perform tasks for payment. The gambling case provides an example task: Two persons wish to bet on the results of a sports match. They send a request to the program instance, essentially saying "We are persons A and B. Send us a pair of BTC addresses, and we will each send X BTC to one of them, plus your fee for services rendered. Your service will be to monitor the status of Sporting Event X and, depending on the outcome, send all funds minus your fee to address A or B, depending on who predicted the result correctly."[4]

The program will then see the outcome of the Sporting Event, and, provided both A and B have sent funds, will pay the winner. To do this, it uses the funds it has received as its fee to rent CPU time with which it performs the operations required of it.

[1] How does a user know an instance of the program comes from the source code publicly posted, given the program should obfuscate itself to prevent tampering?
[2] Is this possible? To what extent can a program run without being subject to tampering with its internal logic?
[3] Insert magic
[4] Some kind of logical syntax would take the place of this sentence, and of course the actual content of the bet needs to be provided.

So, the tl;dr:

Is it possible to create a self-propagating, de-centralized, open source program that would take bitcoins as payment in exchange for performing tasks set out in a limited syntax, using the bitcoin to pay for serverspace?  Essentially, can a program be entirely autonomous and incorruptible, while still taking input from users?
23  Economy / Speculation / WTF? on: February 01, 2012, 09:10:23 PM
What is going on with Gox? The charts (clarkmoody, mtgoxlive), show spikes up and down on the order of 20,000 BTC, close to 6 USD/BTC at the peak... I had an ask at 6.68 or so which, if I'm to believe my orderbook at didn't get fulfilled. Also the prices on arent' beoing updated.

edit: meant to say I had an ask at 5.68 or so.
24  Economy / Speculation / Bitcoinica's "guaranteed liquidity" on: January 16, 2012, 09:21:57 PM
What exactly does it mean when Bitcoinica say they have 50BTC guaranteed liquidity both ways for market orders? I thought it is a way for them to guarantee you get the price quoted if you use the instant buy function, but I placed a market order around 6.8 (it was moving pretty wildly) and had it execute for values between 6.6293 and 7.1312 during that big spike. Basically I tried to catch the downspike but before the order got executed in the queue, the upspike came.

So anyway, what exactly does the guaranteed liquidity stand for?
25  Economy / Economics / Germany able to borrow money at negative interest on: January 13, 2012, 11:12:53 PM

Is this as bad as it sounds?
26  Economy / Speculation / Posturing on: January 12, 2012, 04:49:58 PM
when the slope down to around 6.4 occurred, there was a wall on the ask side, just above the bid prices, of about 1500 BTC being taken up and down continuously. Now there's one, about 1500 BTC, going up and down all the time on the bid side. Glitchy data, or something else?
27  Economy / Speculation / What's up with depth on clarkmoody's chart on: January 10, 2012, 07:56:07 PM
I was looking at the market depth on, and it struck me as being very thin both ways. Currently that table says it would take about 10000 BTC to push the price to around either 3.7 or 9.45. However, and mtgoxlive say the book is already 35,000 BTC deep at around 5.8 or 7.5. Quite a discrepancy - what gives?

edit: Now it's changed quite a bit, more like 22,0000 to 3.7, but still way off what the other charts are saying.

edit2: OK, if I reload the depth gets thinner again on Some kind of connection issue I guess, it's having trouble downloading the whole ordebook.
28  Economy / Speculation / The flipist method on: January 07, 2012, 12:30:33 AM
I'm thinking of starting a trading experiment based on randomness. I tend to believe markets, like complex systems in general, are mostly chaotic and unpredictable. If this is true, then a random trading strategy should be as good as any. So, I figure it's time to put to practice an idea I've considered, as dictated by fine, ancient Persian customs, both sober (earlier) and inebriated (now): Starting 7th January 2012, 10 AM GMT, I intend to start a trading account, fund it with, say, 100 dollars (dollars to keep better protected from BTC volatility, 100 to make it a bit more interesting), and choose, by flipping a coin, every 24 hours whether to buy or sell. If I hold BTC and the coin says sell, I'll sell, if it says buy, I'll hold on, and vice versa.

I'd like input on a few things, keeping in mind I'm obviously willing to take total loss on my investment here:

-Is there any difference to starting an account on Bitcoinica or Mt. Gox, given that I intend to take a very low risk profile to prevent some sudden zhoutonging from mucking up the experiment. Currently I'm leaning towards simply making a new Gox account, but having a 1:1 Bitcoinica account would let me just take a screenshot of the current net value every day.

-How much should I trade with? I guess without leverage I may as well go all in, simply trading my entire balance at a time either way, as dictated by the coin toss.

-Apart from "this is a tremendously bad idea", is there anything I'm not considering here?
29  Other / Off-topic / Wikileaks suspends publishing due to lack of funding on: October 24, 2011, 02:12:43 PM

Word is, the US (and other authorities, I suppose) have succeeded in forcing Wikileaks to halt publication of leaked documents by getting payment processors to block funds donated to them.

They do take Bitcoin. This isn't news, but maybe their financial troubles are.
30  Other / Off-topic / SSL 1.0 broken on: September 20, 2011, 09:54:00 AM

Researchers claim to have a found a way to decrypt SSL traffic, needing about 10 minutes to crack the encryption. The article doesn't go into much detail on what is required for the attack to work, and it's just one post on the register... Still, careful out there.
31  Economy / Speculation / Small high frequency trades on Mt Gox on: August 24, 2011, 12:50:45 PM
As of about 20 minutes ago, there's been a slew of small trades on mt Gox, which seems to have ceased just as I'm writing this.

Basically, there were lots of 0.01-0.02 BTC trades going back and forth, in the 10.92-10.97 USD/BTC range. You can see it as a dense knot on, for example. Has anyone seen this kind of thing happen before. Is it common?
32  Economy / Currency exchange / [closed]Selling up to 50 BTC for cash GBP in London on: July 19, 2011, 08:55:57 PM
Offer closed

I'm going to London tomorrow for a week, am interested in exchanging up to 50 BTC for GBP in cash while there. Either spot price, or perhaps Mt. Gox weighted average. Will have to meet in person somewhere with WIFI, probably have a coffee or beer while the confirmations roll in. If interested, let me know about how you'd like to go about it. I'd prefer thursday or friday, the weekend will be a bit difficult for me in terms of time unless it's well before noon, and if it's after that I'm probably not going to need as much cash as I would if I can get this done this week.
33  Other / Meta / Thread deletions on: June 20, 2011, 11:32:11 AM

Any comments from mods on why the thread was deleted? Note I didn't read much of it, and the deletion happened after I'd gone to sleep. Still, I find the accusations troubling.
34  Other / Meta / Ignore threads and users option on: June 09, 2011, 07:29:00 PM
It's getting busy here, and a lot of threads are just obviously not of interest to me, but nevertheless keep clogging up the forum listings. I haven't been able to find a mod of SMF that would allow filtering thread display, except for in the unread threads listing. Anyone aware of one?

Another thing that could be useful, though I'd prefer not having to use it, would be the ability to ignore users. This, at least, does exist:

What say you, should ignoring users be enabled here?
35  Bitcoin / Bitcoin Discussion / How difficult is it to increase Bitcoin divisibility? on: March 23, 2011, 09:53:01 AM
Currently, Bitcoins are divisible to 8 decimal places. It's conceivable that if Bitcoin gains real momentum, in the future that may not be enough granularity. It's not going to be a problem for a while, quite possibly ever,  but it may be in the future. So, some thinking on this follows:

I'll use the term "Satoshi", as previously coined by others, to mean the current smallest available Bitcoin unit.

-From what I understand, increasing the divisibility would require modifications to the protocol such that transfers of any sums below one Satoshi would not be compatible with clients lacking the modifications. Correct?

-I assume that transfers of sums up to 8 decimal places would still be possible between "new" clients and "old" ones, or at least the modifications could be done in such a way that this was the case.

Now, if it becomes necessary to add divisibility, how troublesome will this be? Let's say I'm selling nuts and bolts and I realize one Satoshi is too much for a bolt. I have a customer who really, really just wants to buy one bolt from me, but is only willing to pay .1 Satoshi for it, which I think is a fair price. So, I start using a modified client that allows for spending of sub-Satoshi amounts, and I tell my customer to do the same. Let's say I had 1000 Satoshi before, now I have 1000.1. I do many such transactions, until the smaller sums eventually form several Satoshi.

So, I suppose the client would be able to collate sub-Satoshi sums into Satoshis so that I can still send 1 Satoshi or more to someone not using a client capable of handling sub-Satoshi amounts. The other option is that sub-Satoshi transfers essentially "corrupt" my wallet in such a way that the BTC it contains are no longer compatible with legacy versions of the protocol. This is not the case, right?

Basically I'm wondering if there's any serious incompatibility that would result from an increase in divisibility, or if it's just a matter of needing to upgrade to a new client if one wishes to use sub-Satoshi amounts, without any added troubles if one does not. As far as I can tell, it should be pretty trouble-free, but is there something I'm missing? If increased divisibility amounted to forking the block chain, then maybe it should be done sooner rather than later.

36  Bitcoin / Bitcoin Discussion / Charity on: March 12, 2011, 12:16:10 AM
As I'm sure pretty much everyone knows, shit has really hit the fan with the earthquake and Tsunamis in Japan. Is there a charity organisation that might be persuaded to accept donations in Bitcoin? Japan currently seems to have been the hardest hit by the disaster, but it's of course possible some other areas in the Pacific will need aid more.

I hope it's not too cynical to think this, but perhaps there's an opportunity to both help some people out and to gain some positive publicity for Bitcoin here. Everything is still very much up in the air, but I'll try to look into this as soon as things clear up a bit.
37  Economy / Marketplace / Wanted: Line laser, webcam on: February 09, 2011, 11:49:23 AM
I'm looking for a fairly inexpensive line laser. Red preferred, 5mW should do.
I'm also looking for a webcam, high res preferred, again not terribly expensive.
The items can be used, as long as they are fully functional. If new, I'm thinking around 25 BTC is my upper limit for the laser with shipping, 35 for the webcam, depending on the model (quality).

The items will need to be shipped to EU, so for customs reasons an EU supplier would probably be preferable.
I'd prefer a single supplier for both items, but will take offers separately as well.
38  Economy / Invites & Accounts / Selling 2 Diaspora invites on: February 02, 2011, 03:26:03 PM
As per subject, I'm selling 2 Diaspora invites. Bidding will continue until Friday 4th February, 12:00 UK time. Invites to be sold separately, with the two highest bids winning an invite each. A single person may bid for both invites, but to win, they must have the two highest bids.

For delivery I will require an e-mail address from the winner(s) via PM.

Bidding starts now.

Auction cancelled, one coin left, will sell at .5 BTC.

Both invites are spoken for.

For future reference, the bitcoin addresses the payments are to be sent to are:


I'm not sure this is a very secure way of proving you've made payment since I can edit these posts, but since I promised to post the addresses for the first purchase, I'll do the same for the second.
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