You don't need those services . They won't help you.
If you want to find a whale. One way is to look at the times and sales. Usually a whale uses an iceberg order that doesn't appear in the order books.
But when price approaches that level it can't surpass it because orders appear out of nowhere.
If you notice this... this is a whale.
Thanks for the advise will try that one.
I think it's very similar to what this service is doing. Since an iceberg order is not in order-book, the only way to detect it is to monitor actual trades.
The iceberg order has some fixed price, say $9443 per BTC. So, during a period of time (maybe 15 min, maybe 15 hrs) a lot more BTC will be bought for $9443 than for $9442.
If this happens, can we say an iceberg order seats there?