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1  Bitcoin / Bitcoin Discussion / What is a confirmation? on: November 28, 2010, 11:23:42 PM
The highest number of confirmations I have seen for some of my transactions is around 900. In a screenshot I have seen someone with over 6000. I thought a confirmation simply meant that one node has seen my transaction in the longest blockchain it has seen. 6000 nodes would mean that bitcoin is getting extremely popular or that some people have hundreds of nodes running.

Is my characterization a confirmation correct? What's the highest number you have seen?
2  Bitcoin / Bitcoin Technical Support / Database error: DB_RUNRECOVERY: Fatal error, run database recovery on: November 28, 2010, 10:59:38 PM
I get the following scary message in my log:

************************
EXCEPTION: 22DbRunRecoveryException       
DbEnv::open: DB_RUNRECOVERY: Fatal error, run database recovery       
bitcoin in AppInit()


I already tried db4.7_dump <the only file existing in the .bitconf/database directory, but I got a format error there.

Solution?

3  Bitcoin / Development & Technical Discussion / Bitcoin harddisk attack on: November 23, 2010, 05:29:25 PM
Running bitcoin feels like its indexing my harddisk. I will probably stop running the client, because of that. I don't mind the CPU usuage, but its seek behaviour is ridiculous. Isn't there some way to keep more in memory data structures and only write them to disk when the program is stopped or when there is a lot of date to write?

What are the harddisk requirements anyway?
4  Bitcoin / Bitcoin Discussion / https://freebitcoins.appspot.com/ a scam? on: November 23, 2010, 05:21:40 PM
I was just testing out Bitcoin, solved the captcha, but didn't get any coins, because of a "server error". That sound like a cheap excuse to get people to solve captchas for free.

https://freebitcoins.appspot.com/


https://freebitcoins.appspot.com/ just works as advertised in probably most cases.
5  Bitcoin / Development & Technical Discussion / Release fails to build. on: November 23, 2010, 05:05:03 PM
I downloaded both the release as the svn version, but they both have the same problem:
 
I installed wx-2.9 and I verified that I can build and run the demos that come with wx. I have also not been able to find a setup.h file anywhere, so why it refers to that is a mystery to me.

Platform: Ubuntu 10.10 x86-64

make -f makefile.unix
g++ -c -O2 -Wno-invalid-offsetof -Wformat -g -D__WXDEBUG__ -D__WXGTK__ -DNOPCH -DFOURWAYSSE2 -DUSE_SSL -I"/usr/local/include/wx-2.9" -I"/usr/local/lib/wx/include/gtk2-unicode-debug-static-2.9" -DGUI -o obj/util.o util.cpp
In file included from /usr/local/include/wx-2.9/wx/defs.h:26,
                 from /usr/local/include/wx-2.9/wx/wx.h:15,
                 from headers.h:30,
                 from util.cpp:5:
/usr/local/include/wx-2.9/wx/platform.h:174: fatal error: wx/setup.h: No such file or directory
compilation terminated.
make: *** [obj/util.o] Error 1


Can you fix the release?
6  Bitcoin / Bitcoin Discussion / How does Bitcoin work? on: November 23, 2010, 02:27:47 AM
Hi everyone,

I am new to this forum, but I have been reading the technical paper behind bitcoin and while I like many of its claimed properties, I would like to see something with a bit more explanation, as I am used from reading other cryptographic papers, which while dense can at least be shown to be wrong. To be able to analyze a system mathematically you need the equations. Pointing at the source code is not a substitute for that.

In a paper I shouldn't be the one who has to figure out why something is true; there should be proofs and a stupid computer should be able to follow it.

I am surprised you already got this far, since I would have expected people to demand that the system is solid first, before using it.

Next to the mathematical points there is also the issue of someone discovering a constructive method to generate blocks. Is there a way to switch to a different hash function if so required?

There is another efficiency issue: how much energy or machine operations of the whole network does it cost to verify one transaction? If it costs more to verify a microtransaction than its value, there seems to be something wrong; it might be that this is a fundamental limitation. A new money system would have to be able to scale billions of users. Is that manageable? If not, why is bitcoin presented as a new money system as opposed to just a cool hack?

So, lots of questions, I hope you can answer them.
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