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Author Topic: Announcing bitcoin-central.net - trade USD and EUR for free!  (Read 16469 times)
davout
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December 29, 2010, 04:58:35 PM
 #1

Yes, that's right, some extra competition in the bitcoin trading field!

Features :
 - A nice interface,
 - No need to send XX.YZX bitcoins to the ABC address, use any of your addresses!
 - Trading, for free, as in beer, good dutch beer,
 - Trade for EUR and USD (liberty reserve for now),
 - MyBitcoin like features to come (MB interface compatible SCI)
 - Bootstrapped with a couple of interesting trade orders,
 - Oh, did I mention trades are free ?

Sign-up and stay tuned for more delicious features ! Smiley





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Cryptoman
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December 29, 2010, 06:20:05 PM
 #2

Excellent.  There's still the problem how to buy LR though.

"A small body of determined spirits fired by an unquenchable faith in their mission can alter the course of history." --Gandhi
caveden
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December 29, 2010, 07:16:33 PM
 #3

Excellent.  There's still the problem how to buy LR though.

+1 Smiley

Any chances of sending euros through bank transfer, like bitcoinexchange used to do? (By the way, anyone knows why they are gone?)

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December 29, 2010, 07:33:34 PM
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I don't get it.  There are matched entries under Selling and Buying, but no trade happens.  I also got an error message when trying to buy, but the bid goes in.

Sjå http://bitmynt.no for veksling av bitcoin mot norske kroner.  Trygt, billig, raskt og enkelt sidan 2010.
I buy with EUR and other currencies at a fair market price when you want to sell.  See http://bitmynt.no/eurprice.pl
I support the roadmap.  If a majority of miners ever try to forcefully take control of Bitcoin through a hard fork without 100% consensus, I will immediately split out and dump all my forkcoins, and buy more real Bitcoin.
jgarzik
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December 29, 2010, 07:40:02 PM
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+1 good stuff

Suggestions:

Jeff Garzik, bitcoin core dev team and BitPay engineer; opinions are my own, not my employer.
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Stephen Gornick
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December 29, 2010, 08:11:06 PM
 #6

I don't get it.  There are matched entries under Selling and Buying, but no trade happens.  I also got an error message when trying to buy, but the bid goes in.

Same here, I got a partial fill then cancelled the remaining fragment.  I then tried variations to try to prod the trade, e.g., offering to sell below the bid, amounts smaller than the remaining buy size, etc.,

Adding BTC went very  well ..., appeared that I could use them to trade after just 2 confirmations.  Withdrawing in both LRUSD and BTC went smoothly.

Wish I could see the order book without authenticating first though.   Even if just a best bid / best ask.

Happy to see this exchange though and will likely use again!  Acknowledged the donation afterwards.  Good stuff!

davout
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December 29, 2010, 09:44:49 PM
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I don't get it.  There are matched entries under Selling and Buying, but no trade happens.  I also got an error message when trying to buy, but the bid goes in.

Same here, I got a partial fill then cancelled the remaining fragment.  I then tried variations to try to prod the trade, e.g., offering to sell below the bid, amounts smaller than the remaining buy size, etc.
That is because the seller/buyer doesn't have enough balance to complete the trade, this is an issue, I will fix it promptly Smiley

Adding BTC went very  well ..., appeared that I could use them to trade after just 2 confirmations.
I raised the bar a little to 3 confirmations which was the original setting, do you like the "your funds are here, just wait for it a little more" instead of "F5, not yet, F5, not yet, F5, phew, finally". You can hover over the amount in the account history to see how much more confirmations are required.

Wish I could see the order book without authenticating first though.   Even if just a best bid / best ask.
Fixed, thanks for bringing that to my attention

Happy to see this exchange though and will likely use again!  Acknowledged the donation afterwards.  Good stuff!
Thank you very much!

Connecting to non-SSL http://www.bitcoin-central.net/ gives an unfriendly "access refused" message
Fixed, it now gently redirects

Supporting Pecunix GAU would be nice
Is there really that much demand for it ?

I don't get it.  There are matched entries under Selling and Buying, but no trade happens. 
See previous answer, I'm going to fix this ASAP, it is confusing indeed, I'll inactivate orders when they fail to complete due to lack of funds and try to reactivate them after each successful incoming transfer.

I also got an error message when trying to buy, but the bid goes in.
You got the "server error, something went wrong, i'll eat your family" page ?
I'll check the logs and try to reproduce, thanks for pointing it out.

Excellent. There's still the problem how to buy LR though.
Yea, I know Sad
I want to start supportign LiqPay, that would also allow total noobs to buy with a plain old CC. But I'm afraid that would be against their ToS and that I'd end up gang raped by angry users if my account gets frozen. I'll see when I've ironed the rest out.

Any chances of sending euros through bank transfer, like bitcoinexchange used to do? (By the way, anyone knows why they are gone?)
Maybe they got caught for not complying with banking regulations or sthg? I guess it wouldn't be too risky if I always maintain a <2~3k€ balance on the bank account.
You can donate by bank transfer though :p

I'll deploy the fixes in an hour or so.

Thank you very very much for your comments and positive feedback !!


jgarzik
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December 29, 2010, 10:40:35 PM
 #8

Supporting Pecunix GAU would be nice
Is there really that much demand for it ?

Not as much as LRUSD, but there is a consistent level of demand.  It's useful because, just like bitcoin, PGAU is not a fiat currency tied to a nation-state.  And it's easy to implement in an automated fashion, once you support LR.

GlobalDigitalPay is another easy one to support; GDP's API works like LR's API.  GDP supports USD, EUR and GBP.

Additionally, with my bitcoinwatch hat on, please publish
  • current "ticker" in JSON, showing last-traded price, current bid, current ask, volume for past 24 hours, etc.
  • full data for each trade, in JSON format

And something like bitcoinmarket's real-time data service would be nice.  I wrote some Perl to accomplish this, see
http://yyz.us/bitcoin/bcast-README.txt
http://yyz.us/bitcoin/bcast-server.txt
http://yyz.us/bitcoin/bcast.txt

or simply "telnet www.bitcoinmarket.com 27007" and add/remove a bid or ask on BCM to watch the real-time data stream.

P.S.  If you wanted to see your site's popularity skyrocket, permit trading between non-bitcoin currencies, such as GDP-USD / LR-USD, or GDP-EUR / LR-USD, or LR-USD / Pecunix GAU.

Jeff Garzik, bitcoin core dev team and BitPay engineer; opinions are my own, not my employer.
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davout
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December 29, 2010, 10:46:54 PM
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Not as much as LRUSD, but there is a consistent level of demand.  It's useful because, just like bitcoin, PGAU is not a fiat currency tied to a nation-state.  And it's easy to implement in an automated fashion, once you support LR.

GlobalDigitalPay is another easy one to support; GDP's API works like LR's API.  GDP supports USD, EUR and GBP.
I see, I'll start adding more of these once I've ironed the first quirks out, I love Ruby on Rails and it's "if your test suite is strong, go nuts with refactoring" Wink

Additionally, with my bitcoinwatch hat on, please publish
  • current "ticker" in JSON, showing last-traded price, current bid, current ask, volume for past 24 hours, etc.
  • full data for each trade, in JSON format
Sure, just give me a couple examples so I can just mirror some API you're already being fed.

And something like bitcoinmarket's real-time data service would be nice.  I wrote some Perl to accomplish this, see
http://yyz.us/bitcoin/bcast-README.txt
http://yyz.us/bitcoin/bcast-server.txt
http://yyz.us/bitcoin/bcast.txt

or simply "telnet www.bitcoinmarket.com 27007" and add/remove a bid or ask on BCM to watch the real-time data stream.
I'll look into that, it has its official github issue Smiley

P.S.  If you wanted to see your site's popularity skyrocket, permit trading between non-bitcoin currencies, such as GDP-USD / LR-USD, or GDP-EUR / LR-USD, or LR-USD / Pecunix GAU.
Yea, I'm thinking that it could be really nice

jgarzik
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December 29, 2010, 11:51:38 PM
 #10

Sure, just give me a couple examples so I can just mirror some API you're already being fed.

mtgox has:
    * http://mtgox.com/code/ticker.php
    * http://mtgox.com/code/data/getTrades.php

bitcoinmarket has the previously mentioned real-time API, and also
    * https://www.bitcoinmarket.com/bitcoin/fxchange.quote.json
    * https://www.bitcoinmarket.com/bitcoin/fxchange.quote.json.alt
    * https://www.bitcoinmarket.com/quotes/offers/bids/
    * https://www.bitcoinmarket.com/quotes/offers/asks/
    * https://www.bitcoinmarket.com/quotes/trades/

The ideal ticker would have, for each currency pair
* currency pair
* last-traded price
* last-traded datetime
* volume, last 24h
* highest bid
* lowest ask
* open price, set once every 24h at "beginning of the day" (== midnight UTC, probably, if you are open 24/7)
* previous close price (might be same as open price, if you are 24h and have no dark pools etc.)
* highest price since "beginning of the day"
* lowest price of "beginning of the day"

The first six are provided by all markets and are IMHO "required."

Trade data is generally
* currency pair
* price
* datetime
* quantity traded

but feel free to include anything else that does not compromise the privacy of your users.

Returning data in JSON format seems to be de facto bitcoin community consensus (only BCM is an outlier here, and only for their trade data; BCM's tickers are JSON).


And something like bitcoinmarket's real-time data service would be nice.  I wrote some Perl to accomplish this, see
http://yyz.us/bitcoin/bcast-README.txt
http://yyz.us/bitcoin/bcast-server.txt
http://yyz.us/bitcoin/bcast.txt

or simply "telnet www.bitcoinmarket.com 27007" and add/remove a bid or ask on BCM to watch the real-time data stream.
I'll look into that, it has its official github issue Smiley

Not sure how to parse that... is your exchange's source code published at github?

If not, what's your price for open sourcing?  Smiley

Thanks for opening another exchange!  bitcoin needs more competition in this area.

Jeff Garzik, bitcoin core dev team and BitPay engineer; opinions are my own, not my employer.
Donations / tip jar: 1BrufViLKnSWtuWGkryPsKsxonV2NQ7Tcj
davout
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December 30, 2010, 12:02:57 AM
 #11

Not sure how to parse that... is your exchange's source code published at github?
In my private repos Smiley

If not, what's your price for open sourcing?  Smiley
Idk, never really thought about it but it represents quite some man hours

Thanks for opening another exchange!  bitcoin needs more competition in this area.
My pleasure, I hadn't found such an exciting rails project since a long time, also all the cool kids have opened their BTC service Cheesy

kiba
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December 30, 2010, 12:04:30 AM
 #12

Maybe you could open source the payment processing code part. I am a rails developer too, but I am kinda lazy about learning the payment processing part.

davout
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December 30, 2010, 12:16:36 AM
 #13

Maybe you could open source the payment processing code part. I am a rails developer too, but I am kinda lazy about learning the payment processing part.
I don't mind opening some parts up.
I basically have a wrapper for the client that's based on method missing and making use of a nice yml file for credentials, ports etc.

Code:
b = Bitcoin::Client.new
b.get_balance user.id.to_s

Is an example use case.

Then I have a whenever schedule that feeds the transactions into my DB, updating confirmations every couple of minutes.

Nothing very complicated, i'll share it if you find some use to it, but right now all my time goes to smoothing trading out Smiley

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December 30, 2010, 02:09:41 PM
 #14

Would you consider ACH in/out of bitcoin-central for large volumes like MtGox?

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December 30, 2010, 02:31:42 PM
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Would you consider cash in mail in order to put in some funds ?
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December 30, 2010, 02:47:22 PM
 #16

Right now I haven't really thought about all that.
But maybe you can give some advice about how it should go ?

Please bear with me while I'm hard at work polishing rough edges, crossing some t's and ensuring that everything is rock solid Smiley

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December 30, 2010, 04:22:32 PM
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Maybe they got caught for not complying with banking regulations or sthg? I guess it wouldn't be too risky if I always maintain a <2~3k€ balance on the bank account.
You can donate by bank transfer though :p

I'll deploy the fixes in an hour or so.

Thank you very very much for your comments and positive feedback !!



If rumors are correct they are busy with a more mt gox/bitcoin-central style trading website.
One thing is clear, it are not problems with bank regulations Smiley

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sturle
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December 30, 2010, 08:00:32 PM
 #18

Why are there orders for 0.0000 BTC/LRUSD in the order book?

Sjå http://bitmynt.no for veksling av bitcoin mot norske kroner.  Trygt, billig, raskt og enkelt sidan 2010.
I buy with EUR and other currencies at a fair market price when you want to sell.  See http://bitmynt.no/eurprice.pl
I support the roadmap.  If a majority of miners ever try to forcefully take control of Bitcoin through a hard fork without 100% consensus, I will immediately split out and dump all my forkcoins, and buy more real Bitcoin.
davout
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December 30, 2010, 10:03:25 PM
 #19

Why are there orders for 0.0000 BTC/LRUSD in the order book?

That's because they're not removed upon completion.
Also you might wonder why some orders that could be matched still appear in the order book, that's just because one of the parties doesn't have the required balance to complete the trade.

So the trading works fine, it's just the order book that needs to get some attention.

Fixes are almost ready, they should get deployed tomorrow around noon UTC.

A couple of charts and all the interfaces will follow promptly.

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December 31, 2010, 01:43:34 PM
 #20

Fixes have been deployed.
You can now trust the order book.

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