Bitcoin
founder:	stick
depends on:
interested:	nephirus ruza pasky kiki
software license:	-
hardware license:	-

~~META: status = active &relation firstimage = :project:bc_logo_135.png ~~

Our Bitcoin account addresses are:
1BRMLAB7nryYgFGrG8x9SYaokb8r2ZwAsX (hot wallet)
1BRMCWpKFe7bcJfYRgpBhBPgroBKEF6E35 (cold wallet)

We have an Bitcoin ATM from GeneralBytes (first model of its kind) at the space where you can buy bitcoins. You can check it's status here

We meet irregularly for Bitcoin Seminar

who_stole_my_btc.py

(Czech) nPLaLvi_SKc

(English) Um63OQz3bjo

XQPSwA2Itbs (0:41:56 onwards)

ProgressBar Talk (Slovak): http://hackerspace.pod.cvut.cz/pgb_20110323_bitcoin_sk.mkv

You can learn more about Bitcoin on these sites:

• http://www.bitcoin.org/ (paper)
• http://cs.wikipedia.org/wiki/Bitcoin
• http://en.wikipedia.org/wiki/Bitcoin
• http://en.bitcoin.it/
• http://www.weusecoins.com/
• http://mining.bitcoin.cz/
• http://github.com/bitcoin/bitcoin
• https://mtgox.com/trade/megaChart - exchange chart
• http://blog.ezyang.com/2011/06/bitcoin-is-not-decentralized/
• http://www.quora.com/Is-the-cryptocurrency-Bitcoin-a-good-idea
• http://arstechnica.com/tech-policy/news/2011/06/bitcoin-inside-the-encrypted-peer-to-peer-currency.ars
• https://en.bitcoin.it/wiki/Weaknesses
• http://culubas.blogspot.com/2011/05/timejacking-bitcoin_802.html
• https://en.bitcoin.it/wiki/Testnet

• https://en.bitcoin.it/wiki/Mining_hardware_comparison
• http://bitminer.info/
• http://prac.hej.cz/czkmhashati.ods - Czech prices of ATi cards compared to their performance (by kiki)
• another hw comparsion (per watt/price)

./DiabloMiner-Linux.sh -u <user> -p <pass> -o api.bitcoin.cz -r 8332
./poclbm.py -d 0 -u <user> --pass=<pass> -o api.bitcoin.cz -p 8332
./minerd --userpass <user>:<pass> --url http://api.bitcoin.cz:8332
./phoenix.py -u http://<user>:<pass>@api.bitcoin.cz:8332/ -k phatk DEVICE=0 AGGRESSION=12 -v FASTLOOP=false WORKSIZE=128 BFI_INT VECTORS

aticonfig --od-enable
aticonfig --odsc=900,900 # was 800,1000 by default
aticonfig --odcc 

Makefile.am: installing `./INSTALL'
configure.ac:96: error: possibly undefined macro: AC_MSG_ERROR
    If this token and others are legitimate, please use m4_pattern_allow.
    See the Autoconf documentation.

libcurl.m4 is missing in your OS (i.e. apt-get install libcurl4-gnutls-dev)

configure gdm autologin (you cannot use ~/.xinitrc and ~/.xsession) in your Window manager add to “Startup applications” “xterm -e screen -c /home/brm/.screenrc-phoenix”

~/.screenrc-phoenix

autodetach on
startup_message off

screen -t phoenix 0 bash /home/brm/BITCOIN/phoenix-1.4/miner.sh 

~/BITCOIN/phoenix-1.4/miner.sh

#!/bin/bash
. ~/.bashrc

export "DISPLAY=:0"
export LD_LIBRARY_PATH="/opt/AMD-APP-SDK-v2.4-lnx32/lib/x86/:$LD_LIBRARY_PATH"
ADRESAR="${HOME}/BITCOIN/phoenix-1.4/"

cd ${ADRESAR}

${ADRESAR}/phoenix.py -u http://brm@brmlab.cz_ati:zlatokopi@api.mining.cz:8332/ -k phatk DEVICE=0 VECTORS AGGRESSION=6 -v FASTLOOP WORKSIZE=128 BFI_INT

/etc/ld.so.conf.d/ati.conf (must be named *.conf)

/opt/AMD-APP-SDK-v2.4-lnx32/lib/x86/

run ldconfig

set 5830 to 900MHz core, 300MHz memory

Only GUI .deb tool for setting: http://sourceforge.net/projects/amdovdrvctrl/

generate own settings, save it. Mine: ~/a.ovdr

<?xml version="1.0" encoding="utf-8"?>
  <OVERDRIVE_PROFILE>
  <PERFORMANCE_LEVEL level="2" gpu="90000" mem="30000" voltage="1163"/>
  <PERFORMANCE_LEVEL level="1" gpu="60000" mem="30000" voltage="1063"/>
  <PERFORMANCE_LEVEL level="0" gpu="15700" mem="30000" voltage="950"/>
  <FAN_SETTING percentage="100"/>
  <FAN_CTRL enabled="no"/>
  <FAN_CTRL_CURVE type="0"/>
  <FAN_CTRL_POINT nr="0" temperature="2000" percentage="0"/>
  <FAN_CTRL_POINT nr="1" temperature="4000" percentage="2500"/>
  <FAN_CTRL_POINT nr="2" temperature="6000" percentage="5000"/>
  <FAN_CTRL_POINT nr="3" temperature="8000" percentage="7500"/>
  <FAN_CTRL_POINT nr="4" temperature="10000" percentage="10000"/>
  <MONITOR_SAMPLE_TIME interval="10"/>
  <COLOR_PROFILE enabled="no" longitude="-13.000000" latitude="52.000000" color_temp_day="0" color_temp_night="0" transition="30"/>
</OVERDRIVE_PROFILE>

How to use setting batch mode (three card rig): ~/minuj.sh

#!/bin/bash
AMDOverdriveCtrl -i 0 -b a.ovdr
sleep 1
AMDOverdriveCtrl -i 3 -b a.ovdr
sleep 1
AMDOverdriveCtrl -i 6 -b a.ovdr
sleep 1
cd /home/kiki/phoenix
export DISPLAY=:0.0; aticonfig --pplib-cmd "set fanspeed 0 100"
export DISPLAY=:0.1; aticonfig --pplib-cmd "set fanspeed 0 100"
export DISPLAY=:0.2; aticonfig --pplib-cmd "set fanspeed 0 100"
aticonfig --od-enable
#aticonfig --od-setclocks=300,900 --adapter=all
sleep 2
./phoenix.py -u http://name:password@api.bitcoin.cz:8332/ -k phatk DEVICE=1 BFI_INT VECTORS AGGRESSION=12 &
sleep 2
./phoenix.py -u http://name2:password2@api.bitcoin.cz:8332/ -k phatk DEVICE=2 BFI_INT VECTORS AGGRESSION=12 &
sleep 2
./phoenix.py -u http://name3:password3@api.bitcoin.cz:8332/ -k phatk DEVICE=3 BFI_INT VECTORS AGGRESSION=12 &

Verification

aticonfig --odgc --adapter=all
aticonfig --odgt --adapter=all

prereq: dos boot disc,

atiflash http://www.techpowerup.com/downloads/1968/ATIFlash%203.86.html

radeon bios editor (rbe) http://www.techpowerup.com/downloads/Utilities/RBE/

tutorial http://www.techpowerup.com/downloads/Utilities/RBE/

example, not working on all, watch ^^^tutorial,:

tested: http://www.alza.cz/sapphire-hd-5830-xtreme-d237936.htm
boot to dos
card listing:
atiflash -i
acquire bios from first card:  
atiflash -s 0 bios0.rom 
on some windows machine (maybe under wine) run rbe,
load bios file, under "additional features" set upper limit GPU" (I set 1050)
save modified bios
go back to minning machine
atiflash -p 0 modbios.rom
then reboot to linux,
modify ^^^ a.ovdr, 
set <PERFORMANCE_LEVEL level="2" gpu="100000" mem="30000" voltage="1125"/> 

my stable settings is gpu=103000, voltage 1163 (stock voltage)

YubiKey II is an USB device provided and used by MtGox as an OTP device to login into their webpage.

No driver needed. Plug-in your Yubikey.

• short press (cca 0.5s) generates login OTP
• long press (cca 3s) for withdrawal OTP

kernel: usb 5-2: new low speed USB device using uhci_hcd and address 4
kernel: input: Yubico Yubico Yubikey II as /devices/pci0000:00/0000:00:1d.0/usb5/5-2/5-2:1.0/input/input13
kernel: generic-usb 0003:1050:0010.0003: input,hidraw0: USB HID v1.11 Keyboard [Yubico Yubico Yubikey II] on usb-0000:00:1d.0-2/input0

• It is not a QR code. It is Data_Matrix in ASCII encoding containing 6digits number printed under. You can generate your own here.

http://jobo.files.wordpress.com/2011/07/yubikeys.pdf