Now there are only two ways you can be sure that you are trading with a prime broker not white labels
!: Use E wallets such as neteller, skrill, perfect money, BTC and many more to deposit directly online to a regulated broker outside
2: If you are using local gateways be sure that it is not a white label where you are depositing money. you can check about that on chat with the prime broker on their main website or send them email.
Prime brokers are very few in India but i can connect you to such prime brokers present in India, where you can deposit online using the main website and also use local gateways.