And Secondly some person can paste here the another user bitcoin address , like from the site or blogs , So you can't calculate accurately . Since you can get some ideas about this from using the manually bitcoin address at blockchain .
Honestly I have currently only 0.6 btc which is not much for me to trade perfectly .
Yes people can lie, but we have smart users that know how to verify an account with a digital signature or by showing "Look this XXXXX is an empty address, watch me fill it tomorrow, then empty it. So you know it was me."
Some have answered already.
I have already shared, please read previous posts.