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1  Bitcoin / Hardware wallets / [INTEREST CHECK] Open source hardware wallet / signer. on: December 31, 2013, 09:29:42 AM
Just checking if there is any interest in something that is pretty much a cheaper version of trezor but lacking some features it has. It would be pretty much exclusively an offline wallet + transaction signer.

So - the hardware wallet contains an encrypted private key, this key never leaves the hardware wallet. When you want to do an transaction your craft an unsigned transaction on your computer or some other device, then feed the hardware wallet with the unsigned transaction through an SD card and get a ready to send signed transaction back.

Unless someone steals the hardware wallet along with your password to decrypt the private key your bitcoin should be completely safe.

Both hardware and software will be open source meaning you can either create one yourself (~$20 + an hour or two of your time) or buy a completely usage-ready one for ~$30-50.

If enough people are interested I could have something like this done in about 2 months. Might add more features in the end but not guaranteed (or you can add them yourself Wink).
2  Economy / Long-term offers / 0.84%/week (0/low scam chance, check why inside) on: December 08, 2013, 04:23:13 PM
Need $1500 @ btc-e and will pay out 0.84% each week for it, I choose the accounts email & password, you control the 2fa key -> I will not be able to withdraw money without 2fa confirmation.

The catch? If btc-e goes offline or runs with the money it's your loss and not mine - I will use 50% of my earnings to reimburse you in case that happens (eta; 1/2 months before the full amount is "insured").

The reason why it's not 100% scamproof is because I am still able to buy high and sell low to my own account thus making some profit off of it - End profit would probably be less than $100 after fees aka it would be a very poor scam.

Balance will be held in USD, bitcoin fluctuations will not change the amount. Payout in BTC or pretty much any currency available @ btc-e. Aka you get $12.6 in whatever currency you wish each week.

Open for 1 person only. You can pull out whenever you wish, but so can I (if it ends up being unprofitable for me in the end you get the $1500 back and we end the deal). Prefer someone who will be able to double or triple up on the investment in the future (not required, only preferred!).

Can pay out 0.15%/day the first week so you know I will not waste your money on stupid shit. It's really pretty foolproof though but if i somehow end up in the negatives i will pay out of my pocket.

Both of us can cancel the agreement and your money will be returned, however I won't cancel it unless it starts being unprofitable for me.

tldr; I will pay 0.84%/week to hedge against the risk of btc-e closing down/running away with the money.
3  Economy / Services / 0.84%/week (0/low scam chance, check inside) on: December 08, 2013, 12:47:42 PM
Need $1500 @ btc-e and will pay out 0.84% each week for it, I choose the accounts email & password, you control the 2fa key -> I will not be able to withdraw money without 2fa confirmation.

The catch? If btc-e goes offline or runs with the money it's your loss and not mine - I will use 50% of my earnings to repay up to $1500 in case this happens before you recoup your money, eg; you've received $400 from the 0.84%/week and I've hypothetically made $2000, i'll refund you $1000. You will be able to know how much I've made since you will have to authorize payments to both me and you through email.

The "almost 0 scam chance" comes from me still being able to buy high and sell low to my own account thus making some profit off of it - End profit would probably be less than $100 after fees for me and not really worth it though.

Balance will be held in USD, bitcoin fluctuations will not change the amount. Payout in BTC or pretty much any currency available @ btc-e. Aka you get $12.6 in whatever currency you wish each week.

Open for 1 person only. You can pull out whenever you wish, but so can I (if it ends up being unprofitable for me in the end you get the $1500 back and we end the deal). Prefer someone who will be able to double or triple up on the investment in the future.

Can pay out 0.15%/day the first week so you know I will not waste your money on stupid shit. If I somehow end up losing anything I will pay back everything from pocket. I do have the money but I do not like having them in btc-e so I'm just hedging the risk (of btc-e running away with the money).

Both of us can cancel the agreement and the money will be returned, however I won't cancel it unless it starts being unprofitable for me.
4  Bitcoin / Project Development / [Windows] Ticker in background image on: November 09, 2013, 04:17:24 PM
Puts a simple ticker showing last price at mtgox/btcchina/bitstamp/btce on the bottom left of your wallpaper. - image

Updates every 45 seconds.

Download

How to: replace background.jpg with whatever background image you wish to use (you can use other extensions too, just rename it to .jpg and it'll probably work even if it's not really a .jpg). Won't work correctly if image is smaller than screen resolution.
How to stop? Kill background.exe in task manager.


Source, python, requires PIL & optionally singleton.py

Code:
# -*- coding: cp1252 -*-
import PIL, urllib, json, ctypes, time, singleton
from PIL import ImageFont
from PIL import Image
from PIL import ImageDraw
from ctypes import windll, wintypes, byref

me = singleton.SingleInstance() #checks if process is already running, remove to skip singleton dependency.

work_area = wintypes.RECT()
if (windll.user32.SystemParametersInfoA(48, 0, byref(work_area), 0)):
    height=work_area.bottom
width = windll.user32.GetSystemMetrics(0)

while True:
    mtgox = urllib.urlopen('http://data.mtgox.com/api/1/BTCUSD/ticker_fast')
    mtgox = json.load(mtgox)
    mtgox = format(float(mtgox["return"]["last_local"]["display"].replace("$", "")), '.2f')
    btce = urllib.urlopen('https://btc-e.com/api/2/btc_usd/ticker')
    btce = json.load(btce)
    btce = format(float(btce["ticker"]["last"]), '.2f')
    bits = urllib.urlopen('https://www.bitstamp.net/api/ticker/')
    bits = json.load(bits)
    bits = format(float(bits["last"]), '.2f')
    btcc = json.load(urllib.urlopen('https://data.btcchina.com/data/ticker'))
    btcc = format(float(btcc["ticker"]["last"]), '.1f')

    font = ImageFont.truetype("lucon.ttf",18)
    img=Image.open("background.jpg")
    draw = ImageDraw.Draw(img)
    draw.text((width-144-11*0, height-18*1-2),"MTGOX $" + str(mtgox),(255,255,255),font=font)
    draw.text((width-144-11*0, height-18*2-2),"BTC-E $" + str(btce),(255,255,255),font=font)
    draw.text((width-144-11*3, height-18*3-2),"BITSTAMP $" + str(bits),(255,255,255),font=font)
    draw.text((width-144-11*3, height-18*4-2),"BTCCHINA " + str(btcc),(255,255,255),font=font)

    draw = ImageDraw.Draw(img)
    img.save("bg.bmp")

    ctypes.windll.user32.SystemParametersInfoA(20, 0, "bg" , 0x1)
    print "update"
    time.sleep(45)

Useful? Send a thanks - 1Ne2FZThx2ZCzPGjQw7ePRuCWrBMGNHGVB
5  Economy / Service Discussion / MtGox claims no DDoS, can other exchanges confirm? on: April 11, 2013, 03:15:35 AM
https://www.facebook.com/MtGox/posts/455962117821534

I have a very hard time believing in this.

Are there any big exchange operators (btc24/btc-e/bitstamp/btcde/bitfloor) on here that can confirm that they themselves were not DDoSed?
The reason I'm having a hard time believing this is because btc-e/bitcoin 24/bitfloor were all down for about 3 minutes just before the first crash happened ($250->$220).
After the price dropped to $220 mtgox was starting to come down to 300sec lag, just as it hit 300sec lag all the exchanges went down for 2-3 minutes (bitfloor for a little while longer) again and mtgox changed direction and grew towards 4500sec lag.
6  Bitcoin / Project Development / Is there any free/open exchange software source? on: April 07, 2013, 01:56:50 PM
Just wondering if any free exchange software exists - Only thing I have found seems to be the Intersango exchange but just want to double check if there is anything else.

~Thanks
7  Bitcoin / Bitcoin Discussion / Gamedev bundle - accepting bitcoins. on: July 12, 2012, 12:10:19 AM
Saw this on the bitcoin reddit.

https://gamedevbundle.com/
8  Bitcoin / Bitcoin Technical Support / php-rpc json, possible to check transaction dates? on: July 19, 2011, 01:31:09 PM
Didn't find any way to see when transactions where made to and from an address, exactly what command do you have to use to get the timestamps, if possible at all?

Thanks, Daniel.
9  Bitcoin / Bitcoin Discussion / What would you want to use btc for? on: July 02, 2011, 01:38:05 AM
What would you want to spend your bitcoins on? What do you think could make btc a more used currency?

Post what you would think would be cool to see, maybe a btc sport betting site? Want to buy books for btc? Play competetive games against HUMANS (kinda like poker, but something else)? Buy software? Escrow services? A bitcoin TV ad?


Please share your ideas or maybe improve what someone else said, maybe one day someone will set up just the service you wish for. If it's a simple enough request i might even do it.



Shameless self advertising:
A way to automaticly convert usd to bitcoins based on current mtgox price at for example forum posts instead of adjusting price manually all the time - Think something like this could benefit the trade forum here alot actually, sad to see that no one actually uses it Sad.
If you don't like links, this is what it does: 57 usd at current mtgoxrate is bitcoins.
10  Bitcoin / Bitcoin Technical Support / Bitcoin memory usage on: June 29, 2011, 07:44:48 PM
bitcoin/bitcoind uses almost 150mb RAM and the memory usage rises every day.
Any way to lower the usage or am i just doing something wrong? Guessing it has something to do with latest block being stored in memory or something, is there a way to prevent this?

Thanks, Daniel.
11  Economy / Service Discussion / Simple usd to btc (mtgox, php gd) on: June 27, 2011, 02:19:07 PM
Gets your (input price/sell price@mtgox) and puts it in a small png img.

Example
Code:
[img]100 usd = http://91.215.158.89/~twyxgiv/bitcoin/convert.php?usd=100[/img] bitcoins.
Output: 100 usd = bitcoins.
Just change the usd=100 part to what amount of usd you want converted to btc. My url is not guaranteed to work in the future and it's hosted on a weak vps, if you plan to use this for serious things please download the source and set it up for yourself.


Download source. (requires php json & php gd)
~Source free to use in any way you wish.


If you like or use this, please donate a bitcent or two to: 1Awyxgawq52mkYmiAQ9v4sLPXxStVsSGy8
12  Bitcoin / Bitcoin Discussion / Simple php script to get data from mtgox. on: June 15, 2011, 02:34:37 PM
Two simple scripts to display some statistics from mtgox, not much more to say really.
These scripts will work without the json extension installed, you only need php to be able to use this.

Mtgoxtrade
Desctiption: Fetches https://mtgox.com/code/data/getTrades.php and convert some data into variables for easier usage. (Don't include this on a highly visited page since it uses alot of resources (because mtgox's gettrades.php is a huge file)
Example page
Download
Usage:
Include mtgoxtrade.class to your php file and use the following variables:
$price(x) Get the price of the x'th last transaction (x=0 will get the latest transaction, x=99 will get the 100th last transaction)
$avgprice(x) Gets the average price of the last x transaction (x=99 will give you the avg of last 100 transactions)
$high Gets you the "high" of how many transactions you specified to read (changed with the $chunk variable inside mtgoxtrade.class)
$low Same as $high but for lowest transaction

There's also some variables that you can change in the .class file, just read the commented lines to see what they do.


Mtgoxtick
Description: Fetches https://mtgox.com/code/data/ticker.php and convert some data into variables for easier usage. Use this instead of Mtgoxtrade if what you're looking for is provided by this script since it uses alot less resources.
Example page
Download
Usage:
Include mtgoxtick.class to your php file and use the following variables:
$high Gets the "high" from mtgox (in usd) (last 24hrs i believe? not sure).
$low Gets the "low" from mtgox (in usd).
$vol Gets the volume of money in the market right now (in btc)
$buy Gets the highest buy price (in usd).
$sell Gets the loewst sell price (in usd)
$last Gets the price of the last bitcoin sold (in usd)

If you like this or use this, please donate to 1Awyxgawq52mkYmiAQ9v4sLPXxStVsSGy8 (even a bitcent would be nice)
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