I have 2 questions:
1) how to unpack a Monero integrated address without the wallet RPC (just using common Linux utilities on the command line)? I couldn't find the format of the integrated address (or I didn't search enough)...
2) if I send some XMR to an "unpacked" integrated address, explicitly using the payment_id, it's the same as sending directly to the integrated address, right? I ask because Tux exchange just added XMR with integrated address, but other exchanges don't support withdrawals to an integrated address (Hitbtc for example returns an error).
My idea is to unpack the integrated address and send the old way (using the payment id).