Returns an object with all balances in BTC, broken down by trusted, untrusted pending, and immature.
curl --user myuser --data-binary '{"jsonrpc":"1.0","id":"1","method":"getbalances","params":[]}' -H 'content-type:text/plain;' http://127.0.0.1:8332/{
"mine": {
"trusted": 1.23456789,
"untrusted_pending": 0.00000000,
"immature": 0.00000000
}
}