user9235: I am trying to figure out how blockchain.info gets the following API functions and is there any way to do these calls on a server (without using their API) perhaps through bitcoind?
https://blockchain.info/q/addressfirstseen/
https://blockchain.info/q/addressbalance/

Thanks. 

user9540: I'm actually working on doing this. To get the balance of an address you have to scan the entire blockchain. This can take a while but blockchain.info returns the balance instantly, which means they've already scanned the entire blockchain and are tracking all addresses. That's a lot of data to store, several gigabytes worth.

9235: <p>I am trying to figure out how blockchain.info gets the following API functions and is there any way to do these calls on a server (without using their API) perhaps through bitcoind?</p>

<pre><code>https://blockchain.info/q/addressfirstseen/
https://blockchain.info/q/addressbalance/
</code></pre>

<p>Thanks. </p>
 9540: <p>I'm actually working on doing this. To get the balance of an address you have to scan the entire blockchain. This can take a while but blockchain.info returns the balance instantly, which means they've already scanned the entire blockchain and are tracking all addresses. That's a lot of data to store, several gigabytes worth.</p>
