Bought 2 shares. Good luck with the project.

Updated the post with 0.5.0rc3. Tell me if you encounter any issues. (edit: reverted to rc1, there's an issue with miniupnpc, I'll look it up tomorrow)

I see. I've fixed the first post to work also on your system.

Did you use my one-liner? In that case, can you paste here the output of this?

Un sistema descentralizado también tendría el problema de la cotización (al fin y al cabo el valor es el que le dan sus usuarios), pero solucionaría otros problemas, sobre todo en el apartado legal. Los grandes (y no tan grandes) traders pueden tener problemas cuando bitcoin se use más y se acabe considerando moneda, o bien tengan que pagar el 18% de los "ingresos" en IVA como si se considerara un servicio. Si llega ese día espero que haya algo estilo ripple para intercambiar bitcoins.

En un sitio de intercambio ripple, cada uno pone una lista de gente de confianza y el límite en euros que podría prestar como máximo. Si quieres comprar bitcoins, el sistema te pone una lista de gente que vende bitcoins y dirá a quién de los que confían en tí le tienes que pagar para recibir esos bitcoins. Quien te lo vende no tiene por qué ser uno de los que confían en ti, puede que sea alguien que confía en otro alguien que confía en otro alguien que confía en otro alguien que confía en otro alguien que confía en ti. Todos en la cadena entonces deben al de delante lo mismo que le debe el de atrás. En dinero fiat, claro, pues en bitcoin no hace falta confiar en nadie para recibirlo.

Hasta que algo así sea implementado (y haya una cantidad suficiente de gente como para que sea útil), tenemos que usar más sistemas de trading aparte de los "grandes". Yo he empezado a usar aqoin hace poco pero lo usa poquísima gente... Quiero favorecer el uso de aqoin porque es el único sistema que existe ahora mismo donde cualquiera de mi país (españa) puede ingresar dinero sin comisión aunque no tenga cuenta bancaria: yo mismo he ido al BBVA que me pilla cerca de casa y he hecho el ingreso. Me haré una cuenta de algún banco sin comisiones por transferencia (como ING o uno-e) para enviar y recibir transferencias desde casa.

Sorry for late reply. Use the same instructions above but adding these options to cgminer: -C -G  (both upper case, C enables cpu mining and G disables gpu mining).

You need recent GPU drivers for that (at least for nvidia, I don't know about ati), so update Ubuntu to 11.10 if you haven't already. Also you'll need a 64 bit distro (I suppose it could work on 32 bit, but having a 64 bit cpu it's pointless not to use a 64 bit linux; cpu intensive tasks perform much better).


I haven't tried solo mining... Register on any mining pool; I've tried http://yourbtc.net/ and it's easy. Add a worker, it gives you a user and a pass. Suppose those are 12345 and PaSsWd.


Look here for more commandline options: https://bitcointalk.org/index.php?topic=28402.0

As I said I use nvidia, which is not very good for mining (ati is 3x faster for calculating hashes)...

Oops, Ubuntu 11.10 doesn't have that version (I just updated this PC today). It has 5.1 but 10.10 doesn't. I've updated the post to autodetect the last libdb++ version. Hopefully it will work now on any Ubuntu, at least since 10.04.

Thanks for reporting. It seems I already had that lib. I edited the post, try now and tell me if you get any other error

It's not a typo. libdb++ is needed, and also installs libdb as dependency. I usually try my one-liners before (and sometimes after) posting them. Notice how I also added automatic detection of number of processors, for efficency

For optimizing python I suggest two alternatives:

PyPy: It's a python JIT compiler written in python. It supports ctypes and a lot of standard libraries natively, and has a wrapper for regular c-python extension modules.

Cython: A python-derived languaje for making python extension modules. I use it a lot, is like writing in python and C/C++ at the same time (but all with python syntax).

There's another one that I didn't know about until recently, Shed Skin: A (restricted subset of) python to c++ compiler. I think is kinda pypy's RPython translator but it seems better for interfacing with C++ code.

By the way, a complete python implementation of bitcoin is an awesome idea! It's the way to go to develop new features, specially if you have tools like those I mentioned. Python code is so much easier to understand and modify!

Hi!

As I said in my first post: (C&P) we're doing a virtual world oriented to cooperative game development (think of second life but much better done, and more in a P2P fashion). I've been planning this project for years, did a lot of tests but didn't start "for real" until very recently. So far the engine is working on win32, linux 32/64, osx, android (on devices with OpenGL ES 2.0) and I'm working right now on networked Python scripting.

Some days ago I found about bitcoins and got very excited for 2 reasons: I want my platform to be as distributed and inherently secure as possible and bitcoin implements some ideas I've already thought of time ago; and I want bitcoin to be the official currency of the virtual world, as I won't have to worry about setting up a payment platform. After learning intensely about bitcoin for the past days, I have some questions.

Well, my questions are related to implementing the currency in the world. I've thought of several alternatives, each with potential problems:

- Implementing a thin bitcoin client with the virtual world client. Pros: I don't have to worry about managing virtual currency at all. Cons: insecure for non tech-aware users, extremely long bootstrap proccess, may saturate the network with many small transactions?.

- Implementing built-in eWallets. Pros: instant transactions, while the actual transactions are processed in blocks of 10-60 minutes and it's easier for the network; security for the end user. I can set a daily cap to avoid problems (returning automatically any money above the cap, with a fee). Cons: the security is in my end, so I need to implement it and I'm responsable for it; also it somewhat defeats the long-term purpose of having a P2P virtual world.

- Hybrid approaches: having some users with real wallets, others with eWallets, etc.

The currency would actually be a submultiple of the bitcoin (such as mBTC) but with a cooler name.

Please comment any thoughts about having a micro economy of very small quantities.

Also, I've thought of implementing alternative crypto-currencies (litecoin) with builtin (but optional) CPU mining. What do you think?

Does anybody thought of this before?

- A method for saving a chain of blocks (or its headers) up to a given point, in a single file/stream. No matter where this file is made, it should be always the same, provided it's old enough (6 hours?). I guess this is like getblocks but unlimited and done locally. (edit: and with a canonical reorganization or whatever it's needed to make sure it's equal everywhere)
- A command for querying the hash of this file.

This way you can download a file from anywhere no matter how untrusty it is, then query a bunch of random peers for the hash that this file should have, in the same way you get and verify the authenticity of individual blocks.

Did you run 0.5.0rc1 then tried to run 0.4? I think I got the same error message when tried that. I did a backup of ~/.bitcon before, however, in case this would happen (but didn't restored it as the wallet is empty). I'll edit my post about compiling bitcoin recommending to backup ~/.bitcoin

Copy and paste the entire thing on a terminal. Type user password when prompted.

Hi!

We're a 2-people startup (designer+coder) doing videogames. We'll release soon a 2.5D game for Android. Among other projects, we're doing a virtual world oriented to cooperative game development (think of second life but much better done, and more in a P2P fashion). I've been planning this project for years, did a lot of tests but didn't start "for real" until very recently. So far the engine is working on win32, linux 32/64, osx, android (on devices with OpenGL ES 2.0) and I'm working right now on networked Python scripting.

Some days ago I found about bitcoins and got very excited for 2 reasons: I want my platform to be as distributed and inherently secure as possible and bitcoin implements some ideas I've already thought of time ago; and I want bitcoin to be the official currency of the virtual world, as I won't have to worry about setting up a payment platform. After learning intensely about bitcoin for the past days, I have some questions.

Also, I'm confident I can contribute a bit of experience/knowledge to bitcoin development.