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Showing 20 of 47 results by maxme
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Re: [New Service] Goochain : search engine for the Bitcoin blockchain
by
maxme
on 21/11/2014, 15:17:43 UTC
Can't find this address "1Maxime7WnLqq24hasMA872JZ4VBGMDbKk" by first bits "1Maxime".
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Re: Vend Oculus Rift DK2
by
maxme
on 31/07/2014, 14:43:22 UTC
La detection de mouvement est vraiment parfaite et sans latence sur le DK2. Par contre je dois avouer qu'après 1h de test sur différentes démos et sur mon projet perso, j'étais assez nauséeux.
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Re: Vend Oculus Rift DK2
by
maxme
on 31/07/2014, 14:17:37 UTC
Pour info, le Rift est vendu.

@superresistant, oui c'est vraiment incroyable la première fois que tu testes la bête. Pour le moment c'est surtout destiné aux développeurs. Le DK2 vient de sortir donc il n'y a pas beaucoup de jeu ou de démos compatibles. Il y a encore pas mal de travail à faire de leur côté pour vendre une version grand public (ergonomie du casque, résolution de l'écran, outils software un peu tordus), mais un cap a déjà été franchi entre le DK1 et DK2.

Plus d'infos sur http://www.reddit.com/r/oculus/
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Topic OP
[Vendu] Oculus Rift DK2
by
maxme
on 30/07/2014, 16:09:58 UTC
Hello,

Je vend un Oculus Rift DK2 pour 1 BTC (frais de port compris en France). J'ai fait une erreur lors de ma commande et j'en ai acheté 2. Je les ai reçu hier (mardi 29 juillet). Tout neuf, juste ouvert et testé que le kit fonctionne. Je peux envoyer des photos pour prouver que je l'ai bien (en ecrivant mon pseudo sur une feuille a cote par exemple).

Possibilité de faire l'échange sur Paris.
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Board Discussions générales et utilisation du Bitcoin
Re: Docteur CAC - émission sur France 5 - projet d'épisode sur Bitcoin
by
maxme
on 09/10/2013, 09:01:47 UTC
Il y a eu une émission sur le sujet hier (7/10/13)
- http://www.france5.fr/emissions/dr-cac/diffusions/07-10-2013_137469

Est-ce que l'OP en était l'initiateur de l'idée ?

J'ai juste essayé de "pousser" le sujet, sur les comptes twitter, facebook, dailymotion de DrCac (et je ne sais pas si ça eut un quelconque effet). je serai curieux de savoir si quelqu'un ici a été contacté pour ce sujet.
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Re: Automated bitcoin arbitrage
by
maxme
on 05/08/2013, 14:06:49 UTC
markets = ["MtGoxUSD", "BitstampUSD"],

Remove the trailing comma in the line above.
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Re: Automated bitcoin arbitrage
by
maxme
on 06/07/2013, 07:10:39 UTC
You may:
  • withdraw funds from an exchange and deposit to an other exchange (manual and long operation, painful, cuts profits with fees)
  • wait for a counter operation and buy low on the exchange you sold previously
  • use other currencies (ltc for instance)
  • wait for an equilibrium and do a negative operation only to transfer funds from one exchange to another (cuts profits of course)
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Re: Automated bitcoin arbitrage
by
maxme
on 09/05/2013, 11:49:19 UTC
I pushed a new feature: fiat currency mixed trades. Now you can buy on market X with EUR and sell on market Y with USD.

Note: Fiat rates conversion are updated every hour from http://rate-exchange.appspot.com/
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Re: Automated bitcoin arbitrage
by
maxme
on 02/05/2013, 15:06:45 UTC
The private part of BTC-e API is not implemented _yet_

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Topic
Board Discussions générales et utilisation du Bitcoin
Re: Bitcoin-Central : Achetez/Vendez facilement en EUR !
by
maxme
on 18/04/2013, 15:50:16 UTC
Pour info, j'ai passé quelques ordres aujourd'hui sur bitcoin-central. Tout est passé hyper rapidement. Et il semble qu'il n'y ai plus le "cache" web, donc on peut voir les transactions passer quasi en temps réel. La mise à jour semble donc avoir résolu mes problèmes, en espérant que ça continue comme ça !
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Re: Bitcoin-Central : Achetez/Vendez facilement en EUR !
by
maxme
on 16/04/2013, 18:36:36 UTC
Aïe aïe aïe, c'est vraiment beaucoup trop long... Honnetement, je commence a vraiment me poser des questions a savoir si je vais continuer a utiliser bitcoin-central.

J'ai passé un ordre de vente au prix du marché il y a plus de 30mins, il est toujours "pending", je ne sais pas si l'order book est toujours valable... 30 minutes ! Mais comment c'est possible ? A croire que leur trade engine est arrêté et si c'est le cas, il devrait bloquer le passage d'ordre ou fermer le site temporairement.
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Re: Automated bitcoin arbitrage
by
maxme
on 30/03/2013, 12:52:58 UTC
Yes I made some profits. But I had to stop the bot since some markets are sometimes not responding or replying with erroneous data. So I'm currently working at checking exchanges status/responsiveness and verifying trades.

And I need to write more automated tests for this part (like mocking erroneous response, ...)
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Re: Automated bitcoin arbitrage
by
maxme
on 26/03/2013, 18:37:19 UTC
I'm using the SpecializedTradingBot and it's outputting this...

What confuses me is ...
profit:
2.354073 EUR with volume:
1.000000 BTC -
buy at 62.7999 (MtGoxEUR)
sell at 62.8000 (BitcoinCentralEUR)
~3.75%

Some of those numbers don't add up.  Am I missing something?

See my previous message here https://bitcointalk.org/index.php?topic=153661.msg1647793#msg1647793

But I should change logging messages...
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Re: Automated bitcoin arbitrage
by
maxme
on 26/03/2013, 18:00:46 UTC

I tried the traderbotsim in an older build and it didn't work.  But I works for me in the recent revision.

I've tried using the traderbot and all I get it this

Code:
2013-03-27 00:34:53,190 [DEBUG] ticker: MtGoxEUR - {'ask': {'price': 62.47, 'amount': 4.0}, 'bid': {'price': 61.9, 'amount': 32.50906816}}
2013-03-27 00:34:53,190 [DEBUG] ticker: BitcoinCentralEUR - {'ask': {'price': 64.92, 'amount': 49.16}, 'bid': {'price': 64.41004, 'amount': 1.279645}}
None
2013-03-27 00:35:37,321 [DEBUG] ticker: MtGoxEUR - {'ask': {'price': 62.47, 'amount': 4.0}, 'bid': {'price': 61.9, 'amount': 32.50906816}}
2013-03-27 00:35:37,321 [DEBUG] ticker: BitcoinCentralEUR - {'ask': {'price': 64.9, 'amount': 5.0}, 'bid': {'price': 64.41004, 'amount': 1.279645}}
2013-03-27 00:35:44,546 [WARNING] Can't automate this trade, last trade occured 43.9949998856 seconds ago
2013-03-27 00:36:17,240 [DEBUG] ticker: MtGoxEUR - {'ask': {'price': 62.47, 'amount': 4.0}, 'bid': {'price': 61.9, 'amount': 32.50906816}}
2013-03-27 00:36:17,242 [DEBUG] ticker: BitcoinCentralEUR - {'ask': {'price': 64.9, 'amount': 5.0}, 'bid': {'price': 64.41004, 'amount': 1.279645}}
2013-03-27 00:36:26,641 [WARNING] Can't automate this trade, last trade occured 86.0899999142 seconds ago
2013-03-27 00:37:00,523 [DEBUG] ticker: MtGoxEUR - {'ask': {'price': 62.485, 'amount': 4.0}, 'bid': {'price': 61.9, 'amount': 41.07126816}}
2013-03-27 00:37:00,525 [DEBUG] ticker: BitcoinCentralEUR - {'ask': {'price': 64.9, 'amount': 1.329572}, 'bid': {'price': 64.41004, 'amount': 1.279645}}
None
Whats going on?

Also, I'm okay losing money.  If this works out it could mean profit!!

I'd definitely owe ya Smiley


It seems you made your first automated transaction.

Code:
2013-03-27 00:35:44,546 [WARNING] Can't automate this trade, last trade occured 43.9949998856 seconds ago

The line above is a safeguard, it waits for TraderBot.trade_wait before executing the next trade (this will be removed when websocket order book sync is implemented)
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Board Discussions générales et utilisation du Bitcoin
Re: Bitcoin-Central : Achetez/Vendez facilement en EUR !
by
maxme
on 25/03/2013, 15:32:41 UTC
C'est moi ou ça rame sévère Bitcoin Central ? J'enchaîne les erreurs de serveur depuis une heure...

Depuis 1 semaine environ il y a régulièrement des problèmes. Peut être sont-ils victime de leur succès.
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Re: Automated bitcoin arbitrage
by
maxme
on 21/03/2013, 07:14:36 UTC
Also, I'm getting this A LOT

Code:
Traceback (most recent call last):
  File "arbitrage.py", line 186, in
    main()
  File "arbitrage.py", line 183, in main
    arbitrer.loop()
  File "arbitrage.py", line 157, in loop
    self.depths = self.update_depths()
  File "arbitrage.py", line 118, in update_depths
    depths[market.name] = market.get_depth()
  File "E:\botEUR\src\public_markets\market.py", line 20, in get_depth
    self.ask_update_depth()
  File "E:\botEUR\src\public_markets\market.py", line 31, in ask_update_depth
    except HTTPError:
NameError: global name 'HTTPError' is not defined

what am I doin wrong? Is it possible for this error to come up if the network is congested? Also, It takes about an hour or more for this to come up

You're doing nothing, wrong. That was my bad, update the code. And yes it come from no-responding websites
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Re: Automated bitcoin arbitrage
by
maxme
on 20/03/2013, 19:12:53 UTC
Does this bot require 2 exchanges for trading to happen? If yes is it possible to do trades with only 1?

Yes it requires 2 exchanges. Arbitrage means "buy at X on a market and sell at X+y on another market at the same time".

http://en.wikipedia.org/wiki/Arbitrage
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Re: Automated bitcoin arbitrage
by
maxme
on 20/03/2013, 16:04:06 UTC
Nope, it's not a rounding problem and it's not an issue.

The "buy price" given by the program is the maximum price you should buy BTC at.
The "sell price" given by the program is the minimum price you should sell BTC at.

Example with this order book:

Code:
books = {
    'MtGoxEUR':
    {'asks': [{'amount': 1, 'price': 47.0},
              {'amount': 2, 'price': 47.3},
              {'amount': 1, 'price': 48.0},
              {'amount': 3, 'price': 49.0}]},
    'BitcoinCentralEUR':
    {'bids': [{'amount': 1, 'price': 48.2},
              {'amount': 2, 'price': 48.1},
              {'amount': 1, 'price': 48.0},
              {'amount': 5, 'price': 47.9}]}}

Output will be :
Code:
volume: 3.0 BTC buy at 48.0 (MtGoxEUR) sell at 48.0 (BitcoinCentralEUR)

Note: volume is 3.0 btc, not 4.0 btc (that includes 48.0 price)
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Re: Automated bitcoin arbitrage
by
maxme
on 20/03/2013, 12:01:13 UTC
Now i understand why you didn't put the perc_threshold and profit_threshold in the config file :p

Haha Wink

I would like people to write their own "TraderBot" class and not use the default. I should rename it to SampleTraderBot.
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Re: Automated bitcoin arbitrage
by
maxme
on 20/03/2013, 08:43:54 UTC

Of course I set my gox api keys and the bitcoincentral credentials. This is my conf:

Quote
markets = ["MtGoxEUR", "BitcoinCentralEUR"]
observers = ["Logger", "TraderBot", "HistoryDumper"]
market_expiration_time = 120 # in seconds: 2 minutes

...

I think you're crazy to do that... Did you read the code first ? Are you sure that it will not just steal your coins ?

First, in TraderBot.py, you'll see some safeguards, for instance if the expected profit is lower than X and the expected profit percentage is lower than Y then it will not execute transactions. One of these safeguards should block current transaction.

But seriously, it's not a "packaged product", it's more a in-development project released for other developers. If you just run it like this, I guarantee you'll lose money.

If you really want to run it on real exchanges, then help me to write automated tests.