Arbitrage Deal Finder

[fuchs82]

I was bored today, so I wrote a java application to find arbitrage deals based on the market data from http://bitcoincharts.com/
It's a console application printing out an arbitrage deal table similar to http://bitcoin-analytics.com/

Example output (the forum destroys the formatting):
+----------------------------------------------------+-----------+--------+-------+--------+----------+-------+-----------+--------+---------+-------+-------+
|                                                    |bitcurexEUR|btcdeEUR|btceEUR|crytrEUR|intrsngEUR|justEUR|localbtcEUR|mtgoxEUR|rippleEUR|rockEUR|vcxEUR |
+----------------------------------------------------+-----------+--------+-------+--------+----------+-------+-----------+--------+---------+-------+-------+
|bitcurexEUR, ask: 609.0EUR, bid: 595.0EUR           |-2,3%      |-2,13%  |-5,24% |-3,28%  |-12,97%   |-2,79% |21,64%     |0,25%   |-88,18%  |-9,69% |-17,08%|
|btcdeEUR, ask: 600.0EUR, bid: 596.0EUR              |-0,83%     |-0,67%  |-3,82% |-1,83%  |-11,67%   |-1,33% |23,46%     |1,75%   |-88%     |-8,33% |-15,83%|
|btceEUR, ask: 588.74897EUR, bid: 577.05901EUR       |1,06%      |1,23%   |-1,99% |0,04%   |-9,98%    |0,55%  |25,82%     |3,7%    |-87,77%  |-6,58% |-14,22%|
|crytrEUR, ask: 887.99999999EUR, bid: 589.00000002EUR|-33%       |-32,88% |-35,02%|-33,67% |-40,32%   |-33,33%|-16,58%    |-31,25% |-91,89%  |-38,06%|-43,13%|
|intrsngEUR, ask: 560.0EUR, bid: 530.0EUR            |6,25%      |6,43%   |3,05%  |5,18%   |-5,36%    |5,71%  |32,28%     |9,02%   |-87,14%  |-1,79% |-9,82% |
|justEUR, ask: 618.87EUR, bid: 592.0EUR              |-3,86%     |-3,7%   |-6,76% |-4,83%  |-14,36%   |-4,34% |19,7%      |-1,35%  |-88,37%  |-11,13%|-18,4% |
|localbtcEUR, ask: 310.8EUR, bid: 740.78EUR          |91,44%     |91,76%  |85,67% |89,51%  |70,53%    |90,48% |138,35%    |96,44%  |-76,83%  |76,96% |62,48% |
|mtgoxEUR, ask: 618.993EUR, bid: 610.52EUR           |-3,88%     |-3,71%  |-6,77% |-4,85%  |-14,38%   |-4,36% |19,68%     |-1,37%  |-88,37%  |-11,15%|-18,42%|
|rippleEUR, ask: 618.88EUR, bid: 71.99999999EUR      |-3,86%     |-3,7%   |-6,76% |-4,83%  |-14,36%   |-4,34% |19,7%      |-1,35%  |-88,37%  |-11,13%|-18,4% |
|rockEUR, ask: 599.0EUR, bid: 550.0EUR               |-0,67%     |-0,5%   |-3,66% |-1,67%  |-11,52%   |-1,17% |23,67%     |1,92%   |-87,98%  |-8,18% |-15,69%|
|vcxEUR, ask: 600.0EUR, bid: 505.001EUR              |-0,83%     |-0,67%  |-3,82% |-1,83%  |-11,67%   |-1,33% |23,46%     |1,75%   |-88%     |-8,33% |-15,83%|
+----------------------------------------------------+-----------+--------+-------+--------+----------+-------+-----------+--------+---------+-------+-------+

Read it this way: You buy from the left hand market to the ask price and sell it on the header-list market to the bid price.


Feel free to use, fork, extend:

https://bitbucket.org/fuchs82/bitcoin-arb

Happy arbitrage trading ;-)
Fuchs82

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Donations: 171B7YyhB1Na37BE8aScEct8R2ojxC8PJG

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[Sukrim]

Haven't checked the code, but I hope that you implemented something to ensure this:
http://bitcoincharts.com/about/markets-api/

Don't query more often than once every 15 minutes!

[fuchs82]

You shouldn't run this program in a loop. I added a note to the readme, thanks for the tip.

[moderate]

You shouldn't run this program in a loop. I added a note to the readme, thanks for the tip.

Not even if the loop waits 15 minutes before fetching data again ? ...

Just point the person to the terms of service from where this fetches data, and say you're not responsible about its usage. Don't assert things that you can't, the other service is subject to changes at any point.

[Sukrim]

https://github.com/timmolter/XChange - just implement this instead, then you could even do automated trading.

Edit: Enabling people to abuse a free and very useful service is just what you might call a "dick move". Also a great way to get your IP banned...

[moderate]

Edit: Enabling people to abuse a free and very useful service is just what you might call a "dick move". Also a great way to get your IP banned...

You are targeting the wrong person here, or are you going to blame me for putting http://api.bitcoincharts.com/v1/markets.json (hey please don't visit this more than once each 15 minutes) here ?

If bitcoincharts can't handle the traffic then it needs to restrict the queries itself, you cannot expect the people from internet to suddenly follow your arbitrary limitations. If you are unhappy with that, you should go after the mighty creators of the internet, or at least more specifically, the ones that defined the http protocol.