I have around 20000 generated addresses which I want to monitor for new transactions. More addresses should probably come. Customers should use every address only once but I would like to monitor already used addresses if some of them decide to transfer coins to "used" addresses.
These addresses are not in the online wallet, I have only addresses in the databases. Private keys are held offline.
That means that I do not want to monitor addresses from the local wallet but the addresses from databases.
A command should executed after a transaction is received (with enough confirmations). There are some monitor services which can send an email or call url after receiving a transaction for an address on the watchlist.
I would like to implement the same feature for my application without depending on external service.
I saw some questions and answers like:
But what would be the most efficient way to do this? Is there a perl/php compatible way to do that?
One of topics from above links to https://bitcointalk.org/index.php?topic=89725.0 where Gavin is talking about some new features but I did not get how could I or whether I can use anything of this to monitor a high number of addresses. Sending every minute a batch RPC call with a few thousands addresses to bitcoind is probably not a solution :-(.
I hope that there is a elegant way to monitor the whole information stream (all incoming transactions and other incoming information) and react if it matches what I need.