I want to generate a large number of bitcoin addresses to provide visitors for each transaction and I want to monitor payments to those addresses.
How do I deterministically generate those large number of addresses and monitor payments to them.
One options would be a bitcoinJ - bitcoin java library.
new ECKey().toAddress(new MainNetParams()).toString();
gives you a valid bitcoin address.
For generating bulk wallets check out https://www.bitaddress.org
After that import the public key in to blockchain.info/wallet where you can monitor them
You can use blockonomics wallet watcher to monitor large number of address. Their free plan allows for 50. You can easily upgrade to higher numbers.