If you can verify you hold enough funds to purchase 10 BTC
Otherwise I have no reason to do such a thing.
You also said you're not a trader nor from Prague, therefore there's no reason to waste each other's time.
You are the seller here who needs to verify ownership in first place.
I hope you realize no one takes you serious here right?
Same as you don't take serious the guy above, no one take serious threads without proof of ownership.
But i believe with the time waste so far you realized that right?
Provide valid proof of ownership for the coins or you are just another time waster or worst