Dear my friend Piotr, first of all happy new year!
As i am writing in my latest posts, my knowelage about Bitcoin was engaged after big talking happen last year when the boom it happens.
Frankly speaking i saw Bitcoin symbol first time in my life in 2010 in a russian atm for recharging phone, but of course i did not pay attention on it, for me it was something like an electronic wallet for russian people.
Anyway Bitcoin is the gold of crypto, it have 10 years and it is still dominating market cap over 50%.
So i am always trying to get some of them, but my experience in private mining and cloud mining it is a fail, but i am still trying to find something better, having a bitcoin is my dream coming true...;)