don't worry mate, i don't have a clue about blockchain either, I can't wait to give the transaction printoff from my account to my accountant!
Lol He would just love you I bet. Back in the day I had an accountant and talked to him about this he said get back to me in a week. Week later he said just tell me the exchange rates at point of sale and tell me how many of these things you have sold and I will sort it out. I was well impressed.
BTW Comes under capital gains if they are your coins and ya sell em
