Hi,

As many of you know, jakedeez and I were scammed by the user gonefishing510, also known as "Andy" (which we already know it is a fake name). We sold him Casascius coins and he never sent the payment. We hired a private eye to gather more information about this guy, but since Andy and his girlfriend don't hold regular jobs it is hard for us to understand who these people are and how they make a living. Whatever their source of income is, it is probably illegal.

So we decided that we will do some surveillance over the course of three or four days in order to learn more about their lives. After we gather all the information, we plan to visit him personally informing that we will deliver it to the police and follow with a lawsuit unless he returns what he owes us.

Unfortunately, this investigation has costs and I would like to ask the community if anyone is willing to help us with them. We are asking for 4 BTC to cover investigation costs. If we recover the stolen coins, we'll return 14BTC to the people who helped us, split proportionally. FYI the total amount he owns me is 35BTC.

This is the original topic: https://bitcointalk.org/index.php?topic=404359.0

This is the address to contribute: 1A98E51MdUSBLma3MumcGPZze9ZUQev4oL
If you do want to help, post a reply here or send me a PM. If we don't get anywhere near 4btc I will probably return everything to everyone and cancel the investigation, but we'll see...

Feel free to ask any questions. Thanks for reading.

I am selling a loaded Casascius coin with 25BTC from 2011. This is a Series 1 coin and it has the hologram error in the back (CASACIUS instead of CASASCIUS).
Here are some photos (sorry for the quality): http://imgur.com/a/XhJ8r#0



The coin is in great condition, but the protective case has a small rip on the right side. I'll ship it to anywhere in the world for free (I live in Europe, if it matters). The base price for the sale is 32BTC.

O preço é o valor da última trade em euros no MtGox. Quem estiver interessado contacte-me por PM sff.

Cumprimentos


Já não estou a vender de momento

Depois de várias promessas ao longo do último ano, a companhia Largecoin finalmente mostrou números: $30000 por 20GH/s com um consumo de apenas 100W. A primeira entrega será em Julho e vão produzir 25 unidades.

Os custos iniciais são muito elevados, mas é de longe a solução mais eficiente que vimos até agora. Arruma as FPGAs a um canto em termos de eficiência. Aqui fica o site e a thread com o anúncio:
http://largecoin.com/
https://bitcointalk.org/index.php?topic=67505.0

[Match your orders before showing them in the orderbook.]

The highest bid at TradeHill is $6.7 and the lowest ask is $6.5. It has been like this for 5 hours.



Could you please stop with this nonsense? Match your orders before showing them in the orderbook. It's impossible to automate trades if the data source isn't reliable.

I have been doing automated arbitrage at some of the top USD exchanges, but the opportunities are very rare nowadays. The prices at TradeHill and MtGox now move almost at the same time.

So I decided to create this thread to share experiences with other people that are also doing arbitrage. Does anyone have any tips or do you know about exchanges that are not as efficient? Maybe the USD/EUR/GBP bitcoin market has more interesting opportunities?

I decided to write a small tool to look at past mining investments. Besides being a regular bitcoin calculator, it can also analyse data to answer questions like: "If I had bought 3Ghash in June, how much would I have made?" Here's the link:

http://bitcoinma.appspot.com/

Maybe we can learn something from the past that will help us predict the price/difficulty movements in the future... Anyway, suggestions/improvements and overall feedback are welcome

Bitcoin, which has been getting a large amount of public attention over the last year, represents a radical new approach to monetary systems which has appeared in policy discussions and in the popular press. Its cryptographic fundamentals have largely held up even as its usage has become increasingly widespread.

We find, however, that it exhibits a fundamental problem of a different nature, based on how its incentives are structured. We propose a modification to the protocol that can fix this problem.

Bitcoin relies on a peer-to-peer network to track transactions that are performed with the currency. For this purpose, every transaction a node learns about should be transmitted to its neighbors in the network. As the protocol is currently defined and implemented, it does not provide an incentive for nodes to broadcast transactions they are aware of. In fact, it provides a strong incentive not to do so. Our solution is to augment the protocol with a scheme that rewards information propagation

Paper at: http://research.microsoft.com/apps/pubs/default.aspx?id=156072
Source: http://www.thebitcointrader.com/2011/11/microsoft-researchers-suggest-method-to.html
Simplified summary: http://coderrr.wordpress.com/2011/11/13/simplified-summary-of-microsoft-researchs-bitcoin-paper-on-incentivizing-transaction-propagation/

Is there a pie chart (similar to the hashrate chart) that shows the percentage of the market volume by exchange? I know this isn't hard to do and the result would be something like "90% MtGox 10% Others",  but I think it would be nice to see a more visual representation of this data. It would also be interesting to know the percentage of bitcoins traded in USD, EUR, GBP, etc.

Deal made

---
I bought a physical copy of Starcraft 2 and I want to the sell the game key because I already have the game registered in my battle.net account (with another key).

This will give you full access to the game. You just need to add the key to your battle.net account and then download the game from here. Note that you will only be able to play on european servers because the game was bought in England. I will send you a photo of the CD key so it will be just like owning the game without having the box

The price is 35€ 30€, which is around 14.6 10 bitcoins at current prices.

I have never traded here but I have an ebay account with 100% feedback and a good reputation at Bitcoin SE (if that matters...). Send me a PM if you are interested and we can discuss the details.

Today and yesterday I saw a lot of reports about the price drop. It appeared on slashdot, arstechnica, ieee, all over twitter, etc.

Could this mean that new people will be entering the market and drive prices up (specially if they think that right now is a buying opportunity)? I wasn't here around June when the media exploded with bitcoin news so I am not sure if this resembles what happened at that time...

Há por aqui muitos portugueses? Costumam fazer mining, especular no mercado ou nenhum dos dois? E há projectos em desenvolvimento? Reparei que no sapo code bits deste ano alguém vai fazer uma apresentação sobre bitcoins. Se conseguir ainda lá dou um salto.

EDIT: The account is no longer for sale. I cashed out the money via paxum with the help of Bitinstant. The money was deposited in my TradeHill account.

--------
Exchangebitcoins.com just closed and I got caught in an unfortunate situation because I do not live in the US. I deposited a few bitcoins there and I made a few trades, but now there's no way for me to withdraw USD without paying high fees (or using Paxum, which I don't want).

So I am selling my account to anyone who can easily withdraw my $84.40. Here are the withdrawal methods:

Withdraw USD via Paxum
Paxum withdrawals are free except for Paxum's $1 fee and are sent within 8 hours.

Withdraw USD by Check
Checks are sent to the name and address below at the time of request. Limit 1 check request per user per day.

Withdraw USD via ACH
ACH allows ExchB to send funds directly to your bank checking or savings account. Funds usually arrive in 2-3 business days. There is a $1 fee per ACH transaction.

Withdraw USD via Wire Transfer
There is a $25 fee for domestic wire transfer and a $40 fee for international.

I would like to trade the account for bitcoins and I am willing to pay a little extra above market price. I have been a member here for a few months, but I have never made a trade so I understand if you don't want to trust me. I have high reputation at the Bitcoin Stack Exchange (if that matters...) and I also have an ebay account with positive feedback.

Contact me via PM. I will send a screenshot of the account, if you want.

Sometimes I come here to read news about alternate cryptocurrencies, but I always leave without any idea of what is going on. Half of the threads are jokes about a forum member or about a cryptocurrency, the other half is filled with flames and personal insults.

So is there a way to quickly know what is going? How many alternative cryptocurrencies exist, what is the development status, active users/miners, etc. I am lost between the fake announcements and the dead currencies.

Are there any merchants (online or physical) that want to share how many bitcoin payments they receive on average? Companies such as BitcoinNotify/Bit-Pay may also share some numbers if they want.

The last successful trade was half an hour ago and I am not being able to sell. The orders just don't go through. Anyone has the same problem?

I am testing a basic trading bot and it just told me that someone was buying bitcoins at $11.65 at Tradehill around 23h24m UTC. This is way above market price.  According to bitcoincharts, these were the trades made around that time:

Aug 23, 2011, 23:36:51   10.86500   0.25   
Aug 23, 2011, 23:26:56   10.88000   0.90   
Aug 23, 2011, 23:26:56   10.87000   0.35   
Aug 23, 2011, 23:25:53   10.88000   0.20   
Aug 23, 2011, 23:12:37   10.86918   0.75   

Do I have a bug in my code, or is it possible that someone posted an order like this? I am using the Orderbook API call.

Has anyone tried it? It's a little expensive, but it sounds like a good way to quickly buy bitcoins. There's a reddit thread.

http://www.btcnow.net/

I think it would be a great idea to create a real wallet for bitcoins. Instead of locking up a computer inside a safe or writing down private keys, why not create a device just for sending and receiving bitcoins?

The first thing that came to my mind when I thought of this was: android phones. I can buy a cheap android at ebay ($60 or $70 maybe? and the price is coming down...), install bitcoin and use it like a real wallet. Of course it would be better if there was a special "Android Bitcoin Edition" with extra security.

Are there any plans to create a device with such functionality? And does anyone use an Android phone as a wallet?

Could anyone explain what is this/how was this done?

http://pastebin.com/raw.php?i=BUB3dygQ

I know what 'strings' does. I just don't know enough about the bitcoin technology to understand what is the blk0001.dat file and how did they inject the strings there.