Hi I need to get final balance from Account public keys (XPUBK). Is there any API or ready made code that can be used to check the balance of particular xpub?
Thank you.

Hi guys, it seems that more exchanges are joining Alphapoint. What do you guys think about that?

Do you think is it better to build an exchange from scratch or use their White-label staf?

Bitcoin processor for polish eshops ... bitcoinpay.com
Enjoy

[First question: - technology]

I am not an IT guy so please bear with me. I would like to bring some idea into discussion with our IT guys later this mont.

We are developing a new market for virtual currencies. Something like vircurex or btc-e.

First question: - technology
Our plan is to trade BTC, LTC, NMC , PPC etc so I am thinking about using bitcoin-qt and altcoin-qt clients and use its API functions. I thing this might be the fastest from the programing point of view as they  all are just clones of Bitcoin. However I do not know if there are any alternatives.
I was also thinking about using Bits of proof (BOP) API, but they are focused on Bitcoins only. Electrum is very fast on implementation, but do not think it is reliable for high volume of transactions and we do not want to use block chain API too as we do not want to be dependent on 3rd party services.
 
Second one: security
I am aware, that we will need to keep virtual currencies in the Cold wallet and keep min. amount of currencies in HOT wallet for operational purposes. I am thinking about 2 different approaches but do not know which is better:
- to store all customers receiving BTC addresses in the cold wallet (watching dog wallet). I would like to use some API calls to retrieve information about received funds etc (do not know if bitcoin-qt is good for such operations). We will need to transfer funds from the cold wallet to hot wallet manually in order to process payouts automatically. Is this good idea or is better to keep all customers receiving addresses in hot wallet and automatically move funds to cold wallet? .


Last question - wallet approach:
Lets say, there are 100 accounts in our market system. Each account can create basically unlimited receiving BTC addresses. Would you need to create 100 differrent wallet.dat files?
Or is it better to have 1 wallet.dat file containing all addresses of your customers? I like this idea more, but do not know how to handle change payments?
What your take on this is and what would you guys recommend us. What is the best business practice?

Thank you.
Daniel

I wass trying to google and could not find the way how to submit a new electrum server address?. We have created new public electrum server running on a very fast HW with SSD disks etc. We would like to share its address. Can anyone advice?

Who else have the same problem?
I have recived tracking number on saturday 4.8.2013. on email for batch 3# Feb. 18 order...
have called DHL to check nothing to the present, I also check on my name in DHL still nothing...
Also open ticket on Avalon's Bitsyncom support and send Bitsyncom PP... My ticket ID: 1468
Avalon team react, I think I'm not the only one.... Track the unit, investigate, send another if you haven't sent at all.


My

Jetz ist moglich, Bitcoin mit Sofortuberweisung uber eine Lizenzierte Zahlungsinstitut (Dagensia finance - eCardOne.com) zu kaufen.
Bitcoin konnen Sie auch via eCardOne debit karte abheben.

Auch Deutschen haben gute Erfahrungen:

http://blog.ecardone.com/2010/04/20/reviews/#comments

I am announcing a new bitcoin service called eCardome.com


Customers can buy and sell their bitcoins with ease from their balances (USD or EUR).

We support payment options like:
Ukash
Bank wires
Local deposits
Sofort bank

We also have reloadable debit cards in USD currency.

T.

Stay on the safe side, eCardOme.com

Very fast in processing.
0.5% spread only.

Payment options
- debit cards
- sofort
- bank transfer
- bitcoin
- debit cards

Stay on the safe side, eCardOme.com

GOOD RATES

    Many currencies: USD, EUR, GBP, CHF, AUD, CAD, SEK, CZK.
    Bitcoin at the current market price with only a +-0.5% spread
  


BUY OPTIONS

    Bank wire
    Sofortuberweisung (INSTANT)
    SEPA transfer in Euros (fast and free of charge)


INSTANT EXCHANGE

    Liberty Reserve <> Bitcoin (INSTANT)
    Sell Bitcoin instantly into currency of your choice (INSTANT)
    Use your BTC client to exchange BTC into USD EUR ... (INSTANT)
    Buy Bitcoin instantly from your disposable balance (INSTANT)


SELL OPTIONS

    Bank Wire in any of the featured currencies (24 HRS)
    Order and Load prepaid Debit Card instantly

HI I JUST WITHDREW BTC TO LR ... APPROX 10.000 USD AND HAVE NOT RECEIVED PAYMENT YET (SINCE FRIDAY) .. IT IS SUNDAY NOW !!!.
MTGOX DOES NOT REPLY TO MY TICKETS !!!
CAN ANYBODY HELP ME?

Hi guys I am a newbie here have several questions:

1] Who where and how is eXchange rate for Bitcoins set ( BTC/USD BTC/EUR BTC/silver BTC/gold). Is that created through mtgox.com website as a part of free market?
2] What happend if mtgox.com website dissapears - who will know what is actual exchange rate for Bitcoins. Who will replace that?
3] Where can I download actual bitcoin exchange rates?