For a website I need to watch (read-only) a number of bitcoin addresses (like about 100) and to retrieve information about all incoming transaction (within the last week). I need for each incoming transaction the number of confirmations, the amount send, the time and from which address the transaction came.
Actually blockchain.info looks what I need, but the number of API calls seems to be limited to 1 every 10 secs. Also I do not see how I can read the senders addresses. So I think what I have to look into is JSON RPC and communicate with bitcoin demon. Is this the right direction?