user13766: How can I create 50,000+ bitcoin addresses in my wallet?
I will need more than 50,000+ addresses in my main wallet. I use Bitcoin Armory, Bitcoin-Qt and I'm just trying out Blockchain.info.
Is it possible to generate 50,000+ addresses in my wallet? If I use bBitcoin-Qt  or Armory I can create addresses manually, but I need something to automate this system.
Is it possible? Is there some API for this?

user5406: You can have Bitcoin-Qt generate 50k addresses by starting it with the parameter -keypool=50000.
They will not all be visible in the client interface, most will be just hidden as unused backup addresses, but they will all be stored in your wallet.dat.

user5757: The Satoshi Bitcoin client (bitcoin-qt or bitcoind) has an RPC API which is the most common way to interact with it programatically.  You can use the getnewaddress command to create as many addresses as you like.  I know of no reason why it shouldn't be able to handle 50,000 or more.

13766: <p>How can I create 50,000+ bitcoin addresses in my wallet?</p>

<p>I will need more than 50,000+ addresses in my main wallet. I use Bitcoin Armory, Bitcoin-Qt and I'm just trying out Blockchain.info.</p>

<p>Is it possible to generate 50,000+ addresses in my wallet? If I use bBitcoin-Qt  or Armory I can create addresses manually, but I need something to automate this system.</p>

<p>Is it possible? Is there some API for this?</p>
 5406: <p>You can have Bitcoin-Qt generate 50k addresses by starting it with the parameter <code>-keypool=50000</code>.</p>

<p>They will not all be visible in the client interface, most will be just hidden as unused backup addresses, but they will all be stored in your <code>wallet.dat</code>.</p>
 5757: <p>The Satoshi Bitcoin client (<code>bitcoin-qt</code> or <code>bitcoind</code>) has an <a href="https://en.bitcoin.it/wiki/API_reference_%28JSON-RPC%29" rel="nofollow">RPC API</a> which is the most common way to interact with it programatically.  You can use the <code>getnewaddress</code> command to create as many addresses as you like.  I know of no reason why it shouldn't be able to handle 50,000 or more.</p>
