1
Use getreceivedbylabel. It takes label and minconf as arguments. label is the label, and minconf is the minimum number of confirmations for a transaction to be considered for inclusion in this value. The default is 1 confirmation.
1
You cannot as there currently no way in Bitcoin Core's RPC to get multiple blocks with one command. You will have to issue multiple getblock commands. If you use a JSON-RPC client programmatically, you can use JSON-RPC's batched requests in order to have to only send one JSON-RPC request to execute multiple RPCs and get the results back in one response.
As ...
Only top voted, non community-wiki answers of a minimum length are eligible
