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I forgot to mention that BTC itself is illegal in our country which is the major reason of my fear. I sometimes sold BTC to unknown guy and that's what I'm fearing of. If it was legal, I would have nothing to fear at all.
Is it? I thought only financial institutions are barred from facilitating bitcoin transactions. It was the Central bank who issued the ban and P2P transactions aren't covered.
The way I see this, it's similar to you selling a mobile phone to a criminal and not knowing that he'll use it in his criminal activities.